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-rw-r--r--mesalib/src/mesa/main/bufferobj.c4303
1 files changed, 2158 insertions, 2145 deletions
diff --git a/mesalib/src/mesa/main/bufferobj.c b/mesalib/src/mesa/main/bufferobj.c
index 31475529e..75afae0ad 100644
--- a/mesalib/src/mesa/main/bufferobj.c
+++ b/mesalib/src/mesa/main/bufferobj.c
@@ -1,2145 +1,2158 @@
-/*
- * Mesa 3-D graphics library
- * Version: 7.6
- *
- * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
- * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-
-/**
- * \file bufferobj.c
- * \brief Functions for the GL_ARB_vertex/pixel_buffer_object extensions.
- * \author Brian Paul, Ian Romanick
- */
-
-
-#include "glheader.h"
-#include "enums.h"
-#include "hash.h"
-#include "imports.h"
-#include "image.h"
-#include "context.h"
-#include "bufferobj.h"
-#include "fbobject.h"
-#include "mfeatures.h"
-#include "mtypes.h"
-#include "texobj.h"
-
-
-/* Debug flags */
-/*#define VBO_DEBUG*/
-/*#define BOUNDS_CHECK*/
-
-
-#if FEATURE_OES_mapbuffer
-#define DEFAULT_ACCESS GL_MAP_WRITE_BIT
-#else
-#define DEFAULT_ACCESS (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)
-#endif
-
-
-/**
- * Used as a placeholder for buffer objects between glGenBuffers() and
- * glBindBuffer() so that glIsBuffer() can work correctly.
- */
-static struct gl_buffer_object DummyBufferObject;
-
-
-/**
- * Return pointer to address of a buffer object target.
- * \param ctx the GL context
- * \param target the buffer object target to be retrieved.
- * \return pointer to pointer to the buffer object bound to \c target in the
- * specified context or \c NULL if \c target is invalid.
- */
-static INLINE struct gl_buffer_object **
-get_buffer_target(struct gl_context *ctx, GLenum target)
-{
- switch (target) {
- case GL_ARRAY_BUFFER_ARB:
- return &ctx->Array.ArrayBufferObj;
- case GL_ELEMENT_ARRAY_BUFFER_ARB:
- return &ctx->Array.ElementArrayBufferObj;
- case GL_PIXEL_PACK_BUFFER_EXT:
- return &ctx->Pack.BufferObj;
- case GL_PIXEL_UNPACK_BUFFER_EXT:
- return &ctx->Unpack.BufferObj;
- case GL_COPY_READ_BUFFER:
- return &ctx->CopyReadBuffer;
- case GL_COPY_WRITE_BUFFER:
- return &ctx->CopyWriteBuffer;
-#if FEATURE_EXT_transform_feedback
- case GL_TRANSFORM_FEEDBACK_BUFFER:
- if (ctx->Extensions.EXT_transform_feedback) {
- return &ctx->TransformFeedback.CurrentBuffer;
- }
- break;
-#endif
- default:
- return NULL;
- }
- return NULL;
-}
-
-
-/**
- * Get the buffer object bound to the specified target in a GL context.
- * \param ctx the GL context
- * \param target the buffer object target to be retrieved.
- * \return pointer to the buffer object bound to \c target in the
- * specified context or \c NULL if \c target is invalid.
- */
-static INLINE struct gl_buffer_object *
-get_buffer(struct gl_context *ctx, GLenum target)
-{
- struct gl_buffer_object **bufObj = get_buffer_target(ctx, target);
- if (bufObj)
- return *bufObj;
- return NULL;
-}
-
-
-/**
- * Convert a GLbitfield describing the mapped buffer access flags
- * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
- */
-static GLenum
-simplified_access_mode(GLbitfield access)
-{
- const GLbitfield rwFlags = GL_MAP_READ_BIT | GL_MAP_WRITE_BIT;
- if ((access & rwFlags) == rwFlags)
- return GL_READ_WRITE;
- if ((access & GL_MAP_READ_BIT) == GL_MAP_READ_BIT)
- return GL_READ_ONLY;
- if ((access & GL_MAP_WRITE_BIT) == GL_MAP_WRITE_BIT)
- return GL_WRITE_ONLY;
- return GL_READ_WRITE; /* this should never happen, but no big deal */
-}
-
-
-/**
- * Tests the subdata range parameters and sets the GL error code for
- * \c glBufferSubDataARB and \c glGetBufferSubDataARB.
- *
- * \param ctx GL context.
- * \param target Buffer object target on which to operate.
- * \param offset Offset of the first byte of the subdata range.
- * \param size Size, in bytes, of the subdata range.
- * \param caller Name of calling function for recording errors.
- * \return A pointer to the buffer object bound to \c target in the
- * specified context or \c NULL if any of the parameter or state
- * conditions for \c glBufferSubDataARB or \c glGetBufferSubDataARB
- * are invalid.
- *
- * \sa glBufferSubDataARB, glGetBufferSubDataARB
- */
-static struct gl_buffer_object *
-buffer_object_subdata_range_good( struct gl_context * ctx, GLenum target,
- GLintptrARB offset, GLsizeiptrARB size,
- const char *caller )
-{
- struct gl_buffer_object *bufObj;
-
- if (size < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "%s(size < 0)", caller);
- return NULL;
- }
-
- if (offset < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "%s(offset < 0)", caller);
- return NULL;
- }
-
- bufObj = get_buffer(ctx, target);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", caller);
- return NULL;
- }
- if (!_mesa_is_bufferobj(bufObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "%s", caller);
- return NULL;
- }
- if (offset + size > bufObj->Size) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "%s(size + offset > buffer size)", caller);
- return NULL;
- }
- if (_mesa_bufferobj_mapped(bufObj)) {
- /* Buffer is currently mapped */
- _mesa_error(ctx, GL_INVALID_OPERATION, "%s", caller);
- return NULL;
- }
-
- return bufObj;
-}
-
-
-/**
- * Allocate and initialize a new buffer object.
- *
- * Default callback for the \c dd_function_table::NewBufferObject() hook.
- */
-static struct gl_buffer_object *
-_mesa_new_buffer_object( struct gl_context *ctx, GLuint name, GLenum target )
-{
- struct gl_buffer_object *obj;
-
- (void) ctx;
-
- obj = MALLOC_STRUCT(gl_buffer_object);
- _mesa_initialize_buffer_object(obj, name, target);
- return obj;
-}
-
-
-/**
- * Delete a buffer object.
- *
- * Default callback for the \c dd_function_table::DeleteBuffer() hook.
- */
-static void
-_mesa_delete_buffer_object( struct gl_context *ctx, struct gl_buffer_object *bufObj )
-{
- (void) ctx;
-
- if (bufObj->Data)
- free(bufObj->Data);
-
- /* assign strange values here to help w/ debugging */
- bufObj->RefCount = -1000;
- bufObj->Name = ~0;
-
- _glthread_DESTROY_MUTEX(bufObj->Mutex);
- free(bufObj);
-}
-
-
-
-/**
- * Set ptr to bufObj w/ reference counting.
- */
-void
-_mesa_reference_buffer_object(struct gl_context *ctx,
- struct gl_buffer_object **ptr,
- struct gl_buffer_object *bufObj)
-{
- if (*ptr == bufObj)
- return;
-
- if (*ptr) {
- /* Unreference the old buffer */
- GLboolean deleteFlag = GL_FALSE;
- struct gl_buffer_object *oldObj = *ptr;
-
- _glthread_LOCK_MUTEX(oldObj->Mutex);
- ASSERT(oldObj->RefCount > 0);
- oldObj->RefCount--;
-#if 0
- printf("BufferObj %p %d DECR to %d\n",
- (void *) oldObj, oldObj->Name, oldObj->RefCount);
-#endif
- deleteFlag = (oldObj->RefCount == 0);
- _glthread_UNLOCK_MUTEX(oldObj->Mutex);
-
- if (deleteFlag) {
-
- /* some sanity checking: don't delete a buffer still in use */
-#if 0
- /* unfortunately, these tests are invalid during context tear-down */
- ASSERT(ctx->Array.ArrayBufferObj != bufObj);
- ASSERT(ctx->Array.ElementArrayBufferObj != bufObj);
- ASSERT(ctx->Array.ArrayObj->Vertex.BufferObj != bufObj);
-#endif
-
- ASSERT(ctx->Driver.DeleteBuffer);
- ctx->Driver.DeleteBuffer(ctx, oldObj);
- }
-
- *ptr = NULL;
- }
- ASSERT(!*ptr);
-
- if (bufObj) {
- /* reference new buffer */
- _glthread_LOCK_MUTEX(bufObj->Mutex);
- if (bufObj->RefCount == 0) {
- /* this buffer's being deleted (look just above) */
- /* Not sure this can every really happen. Warn if it does. */
- _mesa_problem(NULL, "referencing deleted buffer object");
- *ptr = NULL;
- }
- else {
- bufObj->RefCount++;
-#if 0
- printf("BufferObj %p %d INCR to %d\n",
- (void *) bufObj, bufObj->Name, bufObj->RefCount);
-#endif
- *ptr = bufObj;
- }
- _glthread_UNLOCK_MUTEX(bufObj->Mutex);
- }
-}
-
-
-/**
- * Initialize a buffer object to default values.
- */
-void
-_mesa_initialize_buffer_object( struct gl_buffer_object *obj,
- GLuint name, GLenum target )
-{
- (void) target;
-
- memset(obj, 0, sizeof(struct gl_buffer_object));
- _glthread_INIT_MUTEX(obj->Mutex);
- obj->RefCount = 1;
- obj->Name = name;
- obj->Usage = GL_STATIC_DRAW_ARB;
- obj->AccessFlags = DEFAULT_ACCESS;
-}
-
-
-/**
- * Allocate space for and store data in a buffer object. Any data that was
- * previously stored in the buffer object is lost. If \c data is \c NULL,
- * memory will be allocated, but no copy will occur.
- *
- * This is the default callback for \c dd_function_table::BufferData()
- * Note that all GL error checking will have been done already.
- *
- * \param ctx GL context.
- * \param target Buffer object target on which to operate.
- * \param size Size, in bytes, of the new data store.
- * \param data Pointer to the data to store in the buffer object. This
- * pointer may be \c NULL.
- * \param usage Hints about how the data will be used.
- * \param bufObj Object to be used.
- *
- * \return GL_TRUE for success, GL_FALSE for failure
- * \sa glBufferDataARB, dd_function_table::BufferData.
- */
-static GLboolean
-_mesa_buffer_data( struct gl_context *ctx, GLenum target, GLsizeiptrARB size,
- const GLvoid * data, GLenum usage,
- struct gl_buffer_object * bufObj )
-{
- void * new_data;
-
- (void) ctx; (void) target;
-
- new_data = _mesa_realloc( bufObj->Data, bufObj->Size, size );
- if (new_data) {
- bufObj->Data = (GLubyte *) new_data;
- bufObj->Size = size;
- bufObj->Usage = usage;
-
- if (data) {
- memcpy( bufObj->Data, data, size );
- }
-
- return GL_TRUE;
- }
- else {
- return GL_FALSE;
- }
-}
-
-
-/**
- * Replace data in a subrange of buffer object. If the data range
- * specified by \c size + \c offset extends beyond the end of the buffer or
- * if \c data is \c NULL, no copy is performed.
- *
- * This is the default callback for \c dd_function_table::BufferSubData()
- * Note that all GL error checking will have been done already.
- *
- * \param ctx GL context.
- * \param target Buffer object target on which to operate.
- * \param offset Offset of the first byte to be modified.
- * \param size Size, in bytes, of the data range.
- * \param data Pointer to the data to store in the buffer object.
- * \param bufObj Object to be used.
- *
- * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
- */
-static void
-_mesa_buffer_subdata( struct gl_context *ctx, GLenum target, GLintptrARB offset,
- GLsizeiptrARB size, const GLvoid * data,
- struct gl_buffer_object * bufObj )
-{
- (void) ctx; (void) target;
-
- /* this should have been caught in _mesa_BufferSubData() */
- ASSERT(size + offset <= bufObj->Size);
-
- if (bufObj->Data) {
- memcpy( (GLubyte *) bufObj->Data + offset, data, size );
- }
-}
-
-
-/**
- * Retrieve data from a subrange of buffer object. If the data range
- * specified by \c size + \c offset extends beyond the end of the buffer or
- * if \c data is \c NULL, no copy is performed.
- *
- * This is the default callback for \c dd_function_table::GetBufferSubData()
- * Note that all GL error checking will have been done already.
- *
- * \param ctx GL context.
- * \param target Buffer object target on which to operate.
- * \param offset Offset of the first byte to be fetched.
- * \param size Size, in bytes, of the data range.
- * \param data Destination for data
- * \param bufObj Object to be used.
- *
- * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
- */
-static void
-_mesa_buffer_get_subdata( struct gl_context *ctx, GLenum target, GLintptrARB offset,
- GLsizeiptrARB size, GLvoid * data,
- struct gl_buffer_object * bufObj )
-{
- (void) ctx; (void) target;
-
- if (bufObj->Data && ((GLsizeiptrARB) (size + offset) <= bufObj->Size)) {
- memcpy( data, (GLubyte *) bufObj->Data + offset, size );
- }
-}
-
-
-/**
- * Default callback for \c dd_function_tabel::MapBuffer().
- *
- * The function parameters will have been already tested for errors.
- *
- * \param ctx GL context.
- * \param target Buffer object target on which to operate.
- * \param access Information about how the buffer will be accessed.
- * \param bufObj Object to be mapped.
- * \return A pointer to the object's internal data store that can be accessed
- * by the processor
- *
- * \sa glMapBufferARB, dd_function_table::MapBuffer
- */
-static void *
-_mesa_buffer_map( struct gl_context *ctx, GLenum target, GLenum access,
- struct gl_buffer_object *bufObj )
-{
- (void) ctx;
- (void) target;
- (void) access;
- /* Just return a direct pointer to the data */
- if (_mesa_bufferobj_mapped(bufObj)) {
- /* already mapped! */
- return NULL;
- }
- bufObj->Pointer = bufObj->Data;
- bufObj->Length = bufObj->Size;
- bufObj->Offset = 0;
- return bufObj->Pointer;
-}
-
-
-/**
- * Default fallback for \c dd_function_table::MapBufferRange().
- * Called via glMapBufferRange().
- */
-static void *
-_mesa_buffer_map_range( struct gl_context *ctx, GLenum target, GLintptr offset,
- GLsizeiptr length, GLbitfield access,
- struct gl_buffer_object *bufObj )
-{
- (void) ctx;
- (void) target;
- assert(!_mesa_bufferobj_mapped(bufObj));
- /* Just return a direct pointer to the data */
- bufObj->Pointer = bufObj->Data + offset;
- bufObj->Length = length;
- bufObj->Offset = offset;
- bufObj->AccessFlags = access;
- return bufObj->Pointer;
-}
-
-
-/**
- * Default fallback for \c dd_function_table::FlushMappedBufferRange().
- * Called via glFlushMappedBufferRange().
- */
-static void
-_mesa_buffer_flush_mapped_range( struct gl_context *ctx, GLenum target,
- GLintptr offset, GLsizeiptr length,
- struct gl_buffer_object *obj )
-{
- (void) ctx;
- (void) target;
- (void) offset;
- (void) length;
- (void) obj;
- /* no-op */
-}
-
-
-/**
- * Default callback for \c dd_function_table::MapBuffer().
- *
- * The input parameters will have been already tested for errors.
- *
- * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
- */
-static GLboolean
-_mesa_buffer_unmap( struct gl_context *ctx, GLenum target,
- struct gl_buffer_object *bufObj )
-{
- (void) ctx;
- (void) target;
- /* XXX we might assert here that bufObj->Pointer is non-null */
- bufObj->Pointer = NULL;
- bufObj->Length = 0;
- bufObj->Offset = 0;
- bufObj->AccessFlags = 0x0;
- return GL_TRUE;
-}
-
-
-/**
- * Default fallback for \c dd_function_table::CopyBufferSubData().
- * Called via glCopyBuffserSubData().
- */
-static void
-_mesa_copy_buffer_subdata(struct gl_context *ctx,
- struct gl_buffer_object *src,
- struct gl_buffer_object *dst,
- GLintptr readOffset, GLintptr writeOffset,
- GLsizeiptr size)
-{
- GLubyte *srcPtr, *dstPtr;
-
- /* buffer should not already be mapped */
- assert(!_mesa_bufferobj_mapped(src));
- assert(!_mesa_bufferobj_mapped(dst));
-
- srcPtr = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_COPY_READ_BUFFER,
- GL_READ_ONLY, src);
- dstPtr = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_COPY_WRITE_BUFFER,
- GL_WRITE_ONLY, dst);
-
- if (srcPtr && dstPtr)
- memcpy(dstPtr + writeOffset, srcPtr + readOffset, size);
-
- ctx->Driver.UnmapBuffer(ctx, GL_COPY_READ_BUFFER, src);
- ctx->Driver.UnmapBuffer(ctx, GL_COPY_WRITE_BUFFER, dst);
-}
-
-
-
-/**
- * Initialize the state associated with buffer objects
- */
-void
-_mesa_init_buffer_objects( struct gl_context *ctx )
-{
- memset(&DummyBufferObject, 0, sizeof(DummyBufferObject));
- DummyBufferObject.RefCount = 1000*1000*1000; /* never delete */
-
- _mesa_reference_buffer_object(ctx, &ctx->Array.ArrayBufferObj,
- ctx->Shared->NullBufferObj);
- _mesa_reference_buffer_object(ctx, &ctx->Array.ElementArrayBufferObj,
- ctx->Shared->NullBufferObj);
-
- _mesa_reference_buffer_object(ctx, &ctx->CopyReadBuffer,
- ctx->Shared->NullBufferObj);
- _mesa_reference_buffer_object(ctx, &ctx->CopyWriteBuffer,
- ctx->Shared->NullBufferObj);
-}
-
-
-void
-_mesa_free_buffer_objects( struct gl_context *ctx )
-{
- _mesa_reference_buffer_object(ctx, &ctx->Array.ArrayBufferObj, NULL);
- _mesa_reference_buffer_object(ctx, &ctx->Array.ElementArrayBufferObj, NULL);
-
- _mesa_reference_buffer_object(ctx, &ctx->CopyReadBuffer, NULL);
- _mesa_reference_buffer_object(ctx, &ctx->CopyWriteBuffer, NULL);
-}
-
-
-/**
- * Bind the specified target to buffer for the specified context.
- * Called by glBindBuffer() and other functions.
- */
-static void
-bind_buffer_object(struct gl_context *ctx, GLenum target, GLuint buffer)
-{
- struct gl_buffer_object *oldBufObj;
- struct gl_buffer_object *newBufObj = NULL;
- struct gl_buffer_object **bindTarget = NULL;
-
- bindTarget = get_buffer_target(ctx, target);
- if (!bindTarget) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferARB(target 0x%x)", target);
- return;
- }
-
- /* Get pointer to old buffer object (to be unbound) */
- oldBufObj = *bindTarget;
- if (oldBufObj && oldBufObj->Name == buffer)
- return; /* rebinding the same buffer object- no change */
-
- /*
- * Get pointer to new buffer object (newBufObj)
- */
- if (buffer == 0) {
- /* The spec says there's not a buffer object named 0, but we use
- * one internally because it simplifies things.
- */
- newBufObj = ctx->Shared->NullBufferObj;
- }
- else {
- /* non-default buffer object */
- newBufObj = _mesa_lookup_bufferobj(ctx, buffer);
- if (!newBufObj || newBufObj == &DummyBufferObject) {
- /* If this is a new buffer object id, or one which was generated but
- * never used before, allocate a buffer object now.
- */
- ASSERT(ctx->Driver.NewBufferObject);
- newBufObj = ctx->Driver.NewBufferObject(ctx, buffer, target);
- if (!newBufObj) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindBufferARB");
- return;
- }
- _mesa_HashInsert(ctx->Shared->BufferObjects, buffer, newBufObj);
- }
- }
-
- /* bind new buffer */
- _mesa_reference_buffer_object(ctx, bindTarget, newBufObj);
-
- /* Pass BindBuffer call to device driver */
- if (ctx->Driver.BindBuffer)
- ctx->Driver.BindBuffer( ctx, target, newBufObj );
-}
-
-
-/**
- * Update the default buffer objects in the given context to reference those
- * specified in the shared state and release those referencing the old
- * shared state.
- */
-void
-_mesa_update_default_objects_buffer_objects(struct gl_context *ctx)
-{
- /* Bind the NullBufferObj to remove references to those
- * in the shared context hash table.
- */
- bind_buffer_object( ctx, GL_ARRAY_BUFFER_ARB, 0);
- bind_buffer_object( ctx, GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
- bind_buffer_object( ctx, GL_PIXEL_PACK_BUFFER_ARB, 0);
- bind_buffer_object( ctx, GL_PIXEL_UNPACK_BUFFER_ARB, 0);
-}
-
-
-/**
- * When we're about to read pixel data out of a PBO (via glDrawPixels,
- * glTexImage, etc) or write data into a PBO (via glReadPixels,
- * glGetTexImage, etc) we call this function to check that we're not
- * going to read out of bounds.
- *
- * XXX This would also be a convenient time to check that the PBO isn't
- * currently mapped. Whoever calls this function should check for that.
- * Remember, we can't use a PBO when it's mapped!
- *
- * If we're not using a PBO, this is a no-op.
- *
- * \param width width of image to read/write
- * \param height height of image to read/write
- * \param depth depth of image to read/write
- * \param format format of image to read/write
- * \param type datatype of image to read/write
- * \param ptr the user-provided pointer/offset
- * \return GL_TRUE if the PBO access is OK, GL_FALSE if the access would
- * go out of bounds.
- */
-GLboolean
-_mesa_validate_pbo_access(GLuint dimensions,
- const struct gl_pixelstore_attrib *pack,
- GLsizei width, GLsizei height, GLsizei depth,
- GLenum format, GLenum type, const GLvoid *ptr)
-{
- GLvoid *start, *end;
- const GLubyte *sizeAddr; /* buffer size, cast to a pointer */
-
- if (!_mesa_is_bufferobj(pack->BufferObj))
- return GL_TRUE; /* no PBO, OK */
-
- if (pack->BufferObj->Size == 0)
- /* no buffer! */
- return GL_FALSE;
-
- /* get address of first pixel we'll read */
- start = _mesa_image_address(dimensions, pack, ptr, width, height,
- format, type, 0, 0, 0);
-
- /* get address just past the last pixel we'll read */
- end = _mesa_image_address(dimensions, pack, ptr, width, height,
- format, type, depth-1, height-1, width);
-
-
- sizeAddr = ((const GLubyte *) 0) + pack->BufferObj->Size;
-
- if ((const GLubyte *) start > sizeAddr) {
- /* This will catch negative values / wrap-around */
- return GL_FALSE;
- }
- if ((const GLubyte *) end > sizeAddr) {
- /* Image read goes beyond end of buffer */
- return GL_FALSE;
- }
-
- /* OK! */
- return GL_TRUE;
-}
-
-
-/**
- * For commands that read from a PBO (glDrawPixels, glTexImage,
- * glPolygonStipple, etc), if we're reading from a PBO, map it read-only
- * and return the pointer into the PBO. If we're not reading from a
- * PBO, return \p src as-is.
- * If non-null return, must call _mesa_unmap_pbo_source() when done.
- *
- * \return NULL if error, else pointer to start of data
- */
-const GLvoid *
-_mesa_map_pbo_source(struct gl_context *ctx,
- const struct gl_pixelstore_attrib *unpack,
- const GLvoid *src)
-{
- const GLubyte *buf;
-
- if (_mesa_is_bufferobj(unpack->BufferObj)) {
- /* unpack from PBO */
- buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
- GL_READ_ONLY_ARB,
- unpack->BufferObj);
- if (!buf)
- return NULL;
-
- buf = ADD_POINTERS(buf, src);
- }
- else {
- /* unpack from normal memory */
- buf = src;
- }
-
- return buf;
-}
-
-
-/**
- * Combine PBO-read validation and mapping.
- * If any GL errors are detected, they'll be recorded and NULL returned.
- * \sa _mesa_validate_pbo_access
- * \sa _mesa_map_pbo_source
- * A call to this function should have a matching call to
- * _mesa_unmap_pbo_source().
- */
-const GLvoid *
-_mesa_map_validate_pbo_source(struct gl_context *ctx,
- GLuint dimensions,
- const struct gl_pixelstore_attrib *unpack,
- GLsizei width, GLsizei height, GLsizei depth,
- GLenum format, GLenum type, const GLvoid *ptr,
- const char *where)
-{
- ASSERT(dimensions == 1 || dimensions == 2 || dimensions == 3);
-
- if (!_mesa_is_bufferobj(unpack->BufferObj)) {
- /* non-PBO access: no validation to be done */
- return ptr;
- }
-
- if (!_mesa_validate_pbo_access(dimensions, unpack,
- width, height, depth, format, type, ptr)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "%s(out of bounds PBO access)", where);
- return NULL;
- }
-
- if (_mesa_bufferobj_mapped(unpack->BufferObj)) {
- /* buffer is already mapped - that's an error */
- _mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", where);
- return NULL;
- }
-
- ptr = _mesa_map_pbo_source(ctx, unpack, ptr);
- return ptr;
-}
-
-
-/**
- * Counterpart to _mesa_map_pbo_source()
- */
-void
-_mesa_unmap_pbo_source(struct gl_context *ctx,
- const struct gl_pixelstore_attrib *unpack)
-{
- ASSERT(unpack != &ctx->Pack); /* catch pack/unpack mismatch */
- if (_mesa_is_bufferobj(unpack->BufferObj)) {
- ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
- unpack->BufferObj);
- }
-}
-
-
-/**
- * For commands that write to a PBO (glReadPixels, glGetColorTable, etc),
- * if we're writing to a PBO, map it write-only and return the pointer
- * into the PBO. If we're not writing to a PBO, return \p dst as-is.
- * If non-null return, must call _mesa_unmap_pbo_dest() when done.
- *
- * \return NULL if error, else pointer to start of data
- */
-void *
-_mesa_map_pbo_dest(struct gl_context *ctx,
- const struct gl_pixelstore_attrib *pack,
- GLvoid *dest)
-{
- void *buf;
-
- if (_mesa_is_bufferobj(pack->BufferObj)) {
- /* pack into PBO */
- buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
- GL_WRITE_ONLY_ARB,
- pack->BufferObj);
- if (!buf)
- return NULL;
-
- buf = ADD_POINTERS(buf, dest);
- }
- else {
- /* pack to normal memory */
- buf = dest;
- }
-
- return buf;
-}
-
-
-/**
- * Combine PBO-write validation and mapping.
- * If any GL errors are detected, they'll be recorded and NULL returned.
- * \sa _mesa_validate_pbo_access
- * \sa _mesa_map_pbo_dest
- * A call to this function should have a matching call to
- * _mesa_unmap_pbo_dest().
- */
-GLvoid *
-_mesa_map_validate_pbo_dest(struct gl_context *ctx,
- GLuint dimensions,
- const struct gl_pixelstore_attrib *unpack,
- GLsizei width, GLsizei height, GLsizei depth,
- GLenum format, GLenum type, GLvoid *ptr,
- const char *where)
-{
- ASSERT(dimensions == 1 || dimensions == 2 || dimensions == 3);
-
- if (!_mesa_is_bufferobj(unpack->BufferObj)) {
- /* non-PBO access: no validation to be done */
- return ptr;
- }
-
- if (!_mesa_validate_pbo_access(dimensions, unpack,
- width, height, depth, format, type, ptr)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "%s(out of bounds PBO access)", where);
- return NULL;
- }
-
- if (_mesa_bufferobj_mapped(unpack->BufferObj)) {
- /* buffer is already mapped - that's an error */
- _mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", where);
- return NULL;
- }
-
- ptr = _mesa_map_pbo_dest(ctx, unpack, ptr);
- return ptr;
-}
-
-
-/**
- * Counterpart to _mesa_map_pbo_dest()
- */
-void
-_mesa_unmap_pbo_dest(struct gl_context *ctx,
- const struct gl_pixelstore_attrib *pack)
-{
- ASSERT(pack != &ctx->Unpack); /* catch pack/unpack mismatch */
- if (_mesa_is_bufferobj(pack->BufferObj)) {
- ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, pack->BufferObj);
- }
-}
-
-
-
-/**
- * Return the gl_buffer_object for the given ID.
- * Always return NULL for ID 0.
- */
-struct gl_buffer_object *
-_mesa_lookup_bufferobj(struct gl_context *ctx, GLuint buffer)
-{
- if (buffer == 0)
- return NULL;
- else
- return (struct gl_buffer_object *)
- _mesa_HashLookup(ctx->Shared->BufferObjects, buffer);
-}
-
-
-/**
- * If *ptr points to obj, set ptr = the Null/default buffer object.
- * This is a helper for buffer object deletion.
- * The GL spec says that deleting a buffer object causes it to get
- * unbound from all arrays in the current context.
- */
-static void
-unbind(struct gl_context *ctx,
- struct gl_buffer_object **ptr,
- struct gl_buffer_object *obj)
-{
- if (*ptr == obj) {
- _mesa_reference_buffer_object(ctx, ptr, ctx->Shared->NullBufferObj);
- }
-}
-
-
-/**
- * Plug default/fallback buffer object functions into the device
- * driver hooks.
- */
-void
-_mesa_init_buffer_object_functions(struct dd_function_table *driver)
-{
- /* GL_ARB_vertex/pixel_buffer_object */
- driver->NewBufferObject = _mesa_new_buffer_object;
- driver->DeleteBuffer = _mesa_delete_buffer_object;
- driver->BindBuffer = NULL;
- driver->BufferData = _mesa_buffer_data;
- driver->BufferSubData = _mesa_buffer_subdata;
- driver->GetBufferSubData = _mesa_buffer_get_subdata;
- driver->MapBuffer = _mesa_buffer_map;
- driver->UnmapBuffer = _mesa_buffer_unmap;
-
- /* GL_ARB_map_buffer_range */
- driver->MapBufferRange = _mesa_buffer_map_range;
- driver->FlushMappedBufferRange = _mesa_buffer_flush_mapped_range;
-
- /* GL_ARB_copy_buffer */
- driver->CopyBufferSubData = _mesa_copy_buffer_subdata;
-}
-
-
-
-/**********************************************************************/
-/* API Functions */
-/**********************************************************************/
-
-void GLAPIENTRY
-_mesa_BindBufferARB(GLenum target, GLuint buffer)
-{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- bind_buffer_object(ctx, target, buffer);
-}
-
-
-/**
- * Delete a set of buffer objects.
- *
- * \param n Number of buffer objects to delete.
- * \param ids Array of \c n buffer object IDs.
- */
-void GLAPIENTRY
-_mesa_DeleteBuffersARB(GLsizei n, const GLuint *ids)
-{
- GET_CURRENT_CONTEXT(ctx);
- GLsizei i;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (n < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glDeleteBuffersARB(n)");
- return;
- }
-
- _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
-
- for (i = 0; i < n; i++) {
- struct gl_buffer_object *bufObj = _mesa_lookup_bufferobj(ctx, ids[i]);
- if (bufObj) {
- struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
- GLuint j;
-
- ASSERT(bufObj->Name == ids[i] || bufObj == &DummyBufferObject);
-
- if (_mesa_bufferobj_mapped(bufObj)) {
- /* if mapped, unmap it now */
- ctx->Driver.UnmapBuffer(ctx, 0, bufObj);
- bufObj->AccessFlags = DEFAULT_ACCESS;
- bufObj->Pointer = NULL;
- }
-
- /* unbind any vertex pointers bound to this buffer */
- unbind(ctx, &arrayObj->Vertex.BufferObj, bufObj);
- unbind(ctx, &arrayObj->Weight.BufferObj, bufObj);
- unbind(ctx, &arrayObj->Normal.BufferObj, bufObj);
- unbind(ctx, &arrayObj->Color.BufferObj, bufObj);
- unbind(ctx, &arrayObj->SecondaryColor.BufferObj, bufObj);
- unbind(ctx, &arrayObj->FogCoord.BufferObj, bufObj);
- unbind(ctx, &arrayObj->Index.BufferObj, bufObj);
- unbind(ctx, &arrayObj->EdgeFlag.BufferObj, bufObj);
- for (j = 0; j < Elements(arrayObj->TexCoord); j++) {
- unbind(ctx, &arrayObj->TexCoord[j].BufferObj, bufObj);
- }
- for (j = 0; j < Elements(arrayObj->VertexAttrib); j++) {
- unbind(ctx, &arrayObj->VertexAttrib[j].BufferObj, bufObj);
- }
-
- if (ctx->Array.ArrayBufferObj == bufObj) {
- _mesa_BindBufferARB( GL_ARRAY_BUFFER_ARB, 0 );
- }
- if (ctx->Array.ElementArrayBufferObj == bufObj) {
- _mesa_BindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, 0 );
- }
-
- /* unbind any pixel pack/unpack pointers bound to this buffer */
- if (ctx->Pack.BufferObj == bufObj) {
- _mesa_BindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, 0 );
- }
- if (ctx->Unpack.BufferObj == bufObj) {
- _mesa_BindBufferARB( GL_PIXEL_UNPACK_BUFFER_EXT, 0 );
- }
-
- /* The ID is immediately freed for re-use */
- _mesa_HashRemove(ctx->Shared->BufferObjects, ids[i]);
- _mesa_reference_buffer_object(ctx, &bufObj, NULL);
- }
- }
-
- _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
-}
-
-
-/**
- * Generate a set of unique buffer object IDs and store them in \c buffer.
- *
- * \param n Number of IDs to generate.
- * \param buffer Array of \c n locations to store the IDs.
- */
-void GLAPIENTRY
-_mesa_GenBuffersARB(GLsizei n, GLuint *buffer)
-{
- GET_CURRENT_CONTEXT(ctx);
- GLuint first;
- GLint i;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (n < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glGenBuffersARB");
- return;
- }
-
- if (!buffer) {
- return;
- }
-
- /*
- * This must be atomic (generation and allocation of buffer object IDs)
- */
- _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
-
- first = _mesa_HashFindFreeKeyBlock(ctx->Shared->BufferObjects, n);
-
- /* Insert the ID and pointer to dummy buffer object into hash table */
- for (i = 0; i < n; i++) {
- _mesa_HashInsert(ctx->Shared->BufferObjects, first + i,
- &DummyBufferObject);
- buffer[i] = first + i;
- }
-
- _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
-}
-
-
-/**
- * Determine if ID is the name of a buffer object.
- *
- * \param id ID of the potential buffer object.
- * \return \c GL_TRUE if \c id is the name of a buffer object,
- * \c GL_FALSE otherwise.
- */
-GLboolean GLAPIENTRY
-_mesa_IsBufferARB(GLuint id)
-{
- struct gl_buffer_object *bufObj;
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
-
- _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
- bufObj = _mesa_lookup_bufferobj(ctx, id);
- _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
-
- return bufObj && bufObj != &DummyBufferObject;
-}
-
-
-void GLAPIENTRY
-_mesa_BufferDataARB(GLenum target, GLsizeiptrARB size,
- const GLvoid * data, GLenum usage)
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_buffer_object *bufObj;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (size < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glBufferDataARB(size < 0)");
- return;
- }
-
- switch (usage) {
- case GL_STREAM_DRAW_ARB:
- case GL_STREAM_READ_ARB:
- case GL_STREAM_COPY_ARB:
- case GL_STATIC_DRAW_ARB:
- case GL_STATIC_READ_ARB:
- case GL_STATIC_COPY_ARB:
- case GL_DYNAMIC_DRAW_ARB:
- case GL_DYNAMIC_READ_ARB:
- case GL_DYNAMIC_COPY_ARB:
- /* OK */
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glBufferDataARB(usage)");
- return;
- }
-
- bufObj = get_buffer(ctx, target);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glBufferDataARB(target)" );
- return;
- }
- if (!_mesa_is_bufferobj(bufObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glBufferDataARB(buffer 0)" );
- return;
- }
-
- if (_mesa_bufferobj_mapped(bufObj)) {
- /* Unmap the existing buffer. We'll replace it now. Not an error. */
- ctx->Driver.UnmapBuffer(ctx, target, bufObj);
- bufObj->AccessFlags = DEFAULT_ACCESS;
- ASSERT(bufObj->Pointer == NULL);
- }
-
- FLUSH_VERTICES(ctx, _NEW_BUFFER_OBJECT);
-
- bufObj->Written = GL_TRUE;
-
-#ifdef VBO_DEBUG
- printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
- bufObj->Name, size, data, usage);
-#endif
-
-#ifdef BOUNDS_CHECK
- size += 100;
-#endif
-
- ASSERT(ctx->Driver.BufferData);
- if (!ctx->Driver.BufferData( ctx, target, size, data, usage, bufObj )) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBufferDataARB()");
- }
-}
-
-
-void GLAPIENTRY
-_mesa_BufferSubDataARB(GLenum target, GLintptrARB offset,
- GLsizeiptrARB size, const GLvoid * data)
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_buffer_object *bufObj;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- bufObj = buffer_object_subdata_range_good( ctx, target, offset, size,
- "glBufferSubDataARB" );
- if (!bufObj) {
- /* error already recorded */
- return;
- }
-
- if (size == 0)
- return;
-
- bufObj->Written = GL_TRUE;
-
- ASSERT(ctx->Driver.BufferSubData);
- ctx->Driver.BufferSubData( ctx, target, offset, size, data, bufObj );
-}
-
-
-void GLAPIENTRY
-_mesa_GetBufferSubDataARB(GLenum target, GLintptrARB offset,
- GLsizeiptrARB size, void * data)
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_buffer_object *bufObj;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- bufObj = buffer_object_subdata_range_good( ctx, target, offset, size,
- "glGetBufferSubDataARB" );
- if (!bufObj) {
- /* error already recorded */
- return;
- }
-
- ASSERT(ctx->Driver.GetBufferSubData);
- ctx->Driver.GetBufferSubData( ctx, target, offset, size, data, bufObj );
-}
-
-
-void * GLAPIENTRY
-_mesa_MapBufferARB(GLenum target, GLenum access)
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_buffer_object * bufObj;
- GLbitfield accessFlags;
- void *map;
-
- ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
-
- switch (access) {
- case GL_READ_ONLY_ARB:
- accessFlags = GL_MAP_READ_BIT;
- break;
- case GL_WRITE_ONLY_ARB:
- accessFlags = GL_MAP_WRITE_BIT;
- break;
- case GL_READ_WRITE_ARB:
- accessFlags = GL_MAP_READ_BIT | GL_MAP_WRITE_BIT;
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glMapBufferARB(access)");
- return NULL;
- }
-
- bufObj = get_buffer(ctx, target);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glMapBufferARB(target)" );
- return NULL;
- }
- if (!_mesa_is_bufferobj(bufObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glMapBufferARB(buffer 0)" );
- return NULL;
- }
- if (_mesa_bufferobj_mapped(bufObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glMapBufferARB(already mapped)");
- return NULL;
- }
-
- ASSERT(ctx->Driver.MapBuffer);
- map = ctx->Driver.MapBuffer( ctx, target, access, bufObj );
- if (!map) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glMapBufferARB(map failed)");
- return NULL;
- }
- else {
- /* The driver callback should have set these fields.
- * This is important because other modules (like VBO) might call
- * the driver function directly.
- */
- ASSERT(bufObj->Pointer == map);
- ASSERT(bufObj->Length == bufObj->Size);
- ASSERT(bufObj->Offset == 0);
- bufObj->AccessFlags = accessFlags;
- }
-
- if (access == GL_WRITE_ONLY_ARB || access == GL_READ_WRITE_ARB)
- bufObj->Written = GL_TRUE;
-
-#ifdef VBO_DEBUG
- printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n",
- bufObj->Name, bufObj->Size, access);
- if (access == GL_WRITE_ONLY_ARB) {
- GLuint i;
- GLubyte *b = (GLubyte *) bufObj->Pointer;
- for (i = 0; i < bufObj->Size; i++)
- b[i] = i & 0xff;
- }
-#endif
-
-#ifdef BOUNDS_CHECK
- {
- GLubyte *buf = (GLubyte *) bufObj->Pointer;
- GLuint i;
- /* buffer is 100 bytes larger than requested, fill with magic value */
- for (i = 0; i < 100; i++) {
- buf[bufObj->Size - i - 1] = 123;
- }
- }
-#endif
-
- return bufObj->Pointer;
-}
-
-
-GLboolean GLAPIENTRY
-_mesa_UnmapBufferARB(GLenum target)
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_buffer_object *bufObj;
- GLboolean status = GL_TRUE;
- ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
-
- bufObj = get_buffer(ctx, target);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glUnmapBufferARB(target)" );
- return GL_FALSE;
- }
- if (!_mesa_is_bufferobj(bufObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glUnmapBufferARB" );
- return GL_FALSE;
- }
- if (!_mesa_bufferobj_mapped(bufObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glUnmapBufferARB");
- return GL_FALSE;
- }
-
-#ifdef BOUNDS_CHECK
- if (bufObj->Access != GL_READ_ONLY_ARB) {
- GLubyte *buf = (GLubyte *) bufObj->Pointer;
- GLuint i;
- /* check that last 100 bytes are still = magic value */
- for (i = 0; i < 100; i++) {
- GLuint pos = bufObj->Size - i - 1;
- if (buf[pos] != 123) {
- _mesa_warning(ctx, "Out of bounds buffer object write detected"
- " at position %d (value = %u)\n",
- pos, buf[pos]);
- }
- }
- }
-#endif
-
-#ifdef VBO_DEBUG
- if (bufObj->AccessFlags & GL_MAP_WRITE_BIT) {
- GLuint i, unchanged = 0;
- GLubyte *b = (GLubyte *) bufObj->Pointer;
- GLint pos = -1;
- /* check which bytes changed */
- for (i = 0; i < bufObj->Size - 1; i++) {
- if (b[i] == (i & 0xff) && b[i+1] == ((i+1) & 0xff)) {
- unchanged++;
- if (pos == -1)
- pos = i;
- }
- }
- if (unchanged) {
- printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
- bufObj->Name, unchanged, bufObj->Size, pos);
- }
- }
-#endif
-
- status = ctx->Driver.UnmapBuffer( ctx, target, bufObj );
- bufObj->AccessFlags = DEFAULT_ACCESS;
- ASSERT(bufObj->Pointer == NULL);
- ASSERT(bufObj->Offset == 0);
- ASSERT(bufObj->Length == 0);
-
- return status;
-}
-
-
-void GLAPIENTRY
-_mesa_GetBufferParameterivARB(GLenum target, GLenum pname, GLint *params)
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_buffer_object *bufObj;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- bufObj = get_buffer(ctx, target);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameterivARB(target)" );
- return;
- }
- if (!_mesa_is_bufferobj(bufObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glGetBufferParameterivARB" );
- return;
- }
-
- switch (pname) {
- case GL_BUFFER_SIZE_ARB:
- *params = (GLint) bufObj->Size;
- return;
- case GL_BUFFER_USAGE_ARB:
- *params = bufObj->Usage;
- return;
- case GL_BUFFER_ACCESS_ARB:
- *params = simplified_access_mode(bufObj->AccessFlags);
- return;
- case GL_BUFFER_MAPPED_ARB:
- *params = _mesa_bufferobj_mapped(bufObj);
- return;
- case GL_BUFFER_ACCESS_FLAGS:
- if (ctx->VersionMajor < 3)
- goto invalid_pname;
- *params = bufObj->AccessFlags;
- return;
- case GL_BUFFER_MAP_OFFSET:
- if (ctx->VersionMajor < 3)
- goto invalid_pname;
- *params = (GLint) bufObj->Offset;
- return;
- case GL_BUFFER_MAP_LENGTH:
- if (ctx->VersionMajor < 3)
- goto invalid_pname;
- *params = (GLint) bufObj->Length;
- return;
- default:
- ; /* fall-through */
- }
-
-invalid_pname:
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameterivARB(pname=%s)",
- _mesa_lookup_enum_by_nr(pname));
-}
-
-
-/**
- * New in GL 3.2
- * This is pretty much a duplicate of GetBufferParameteriv() but the
- * GL_BUFFER_SIZE_ARB attribute will be 64-bits on a 64-bit system.
- */
-void GLAPIENTRY
-_mesa_GetBufferParameteri64v(GLenum target, GLenum pname, GLint64 *params)
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_buffer_object *bufObj;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- bufObj = get_buffer(ctx, target);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameteri64v(target)" );
- return;
- }
- if (!_mesa_is_bufferobj(bufObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glGetBufferParameteri64v" );
- return;
- }
-
- switch (pname) {
- case GL_BUFFER_SIZE_ARB:
- *params = bufObj->Size;
- return;
- case GL_BUFFER_USAGE_ARB:
- *params = bufObj->Usage;
- return;
- case GL_BUFFER_ACCESS_ARB:
- *params = simplified_access_mode(bufObj->AccessFlags);
- return;
- case GL_BUFFER_ACCESS_FLAGS:
- if (ctx->VersionMajor < 3)
- goto invalid_pname;
- *params = bufObj->AccessFlags;
- return;
- case GL_BUFFER_MAPPED_ARB:
- *params = _mesa_bufferobj_mapped(bufObj);
- return;
- case GL_BUFFER_MAP_OFFSET:
- if (ctx->VersionMajor < 3)
- goto invalid_pname;
- *params = bufObj->Offset;
- return;
- case GL_BUFFER_MAP_LENGTH:
- if (ctx->VersionMajor < 3)
- goto invalid_pname;
- *params = bufObj->Length;
- return;
- default:
- ; /* fall-through */
- }
-
-invalid_pname:
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameteri64v(pname=%s)",
- _mesa_lookup_enum_by_nr(pname));
-}
-
-
-void GLAPIENTRY
-_mesa_GetBufferPointervARB(GLenum target, GLenum pname, GLvoid **params)
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_buffer_object * bufObj;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (pname != GL_BUFFER_MAP_POINTER_ARB) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferPointervARB(pname)");
- return;
- }
-
- bufObj = get_buffer(ctx, target);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferPointervARB(target)" );
- return;
- }
- if (!_mesa_is_bufferobj(bufObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glGetBufferPointervARB" );
- return;
- }
-
- *params = bufObj->Pointer;
-}
-
-
-void GLAPIENTRY
-_mesa_CopyBufferSubData(GLenum readTarget, GLenum writeTarget,
- GLintptr readOffset, GLintptr writeOffset,
- GLsizeiptr size)
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_buffer_object *src, *dst;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- src = get_buffer(ctx, readTarget);
- if (!src || !_mesa_is_bufferobj(src)) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glCopyBuffserSubData(readTarget = 0x%x)", readTarget);
- return;
- }
-
- dst = get_buffer(ctx, writeTarget);
- if (!dst || !_mesa_is_bufferobj(dst)) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glCopyBuffserSubData(writeTarget = 0x%x)", writeTarget);
- return;
- }
-
- if (_mesa_bufferobj_mapped(src)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glCopyBuffserSubData(readBuffer is mapped)");
- return;
- }
-
- if (_mesa_bufferobj_mapped(dst)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glCopyBuffserSubData(writeBuffer is mapped)");
- return;
- }
-
- if (readOffset < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyBuffserSubData(readOffset = %d)", (int) readOffset);
- return;
- }
-
- if (writeOffset < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyBuffserSubData(writeOffset = %d)", (int) writeOffset);
- return;
- }
-
- if (readOffset + size > src->Size) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyBuffserSubData(readOffset + size = %d)",
- (int) (readOffset + size));
- return;
- }
-
- if (writeOffset + size > dst->Size) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyBuffserSubData(writeOffset + size = %d)",
- (int) (writeOffset + size));
- return;
- }
-
- if (src == dst) {
- if (readOffset + size <= writeOffset) {
- /* OK */
- }
- else if (writeOffset + size <= readOffset) {
- /* OK */
- }
- else {
- /* overlapping src/dst is illegal */
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glCopyBuffserSubData(overlapping src/dst)");
- return;
- }
- }
-
- ctx->Driver.CopyBufferSubData(ctx, src, dst, readOffset, writeOffset, size);
-}
-
-
-/**
- * See GL_ARB_map_buffer_range spec
- */
-void * GLAPIENTRY
-_mesa_MapBufferRange(GLenum target, GLintptr offset, GLsizeiptr length,
- GLbitfield access)
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_buffer_object *bufObj;
- void *map;
-
- ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
-
- if (!ctx->Extensions.ARB_map_buffer_range) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glMapBufferRange(extension not supported)");
- return NULL;
- }
-
- if (offset < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glMapBufferRange(offset = %ld)", (long)offset);
- return NULL;
- }
-
- if (length < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glMapBufferRange(length = %ld)", (long)length);
- return NULL;
- }
-
- if ((access & (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)) == 0) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glMapBufferRange(access indicates neither read or write)");
- return NULL;
- }
-
- if (access & GL_MAP_READ_BIT) {
- if ((access & GL_MAP_INVALIDATE_RANGE_BIT) ||
- (access & GL_MAP_INVALIDATE_BUFFER_BIT) ||
- (access & GL_MAP_UNSYNCHRONIZED_BIT)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glMapBufferRange(invalid access flags)");
- return NULL;
- }
- }
-
- if ((access & GL_MAP_FLUSH_EXPLICIT_BIT) &&
- ((access & GL_MAP_WRITE_BIT) == 0)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glMapBufferRange(invalid access flags)");
- return NULL;
- }
-
- bufObj = get_buffer(ctx, target);
- if (!bufObj || !_mesa_is_bufferobj(bufObj)) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glMapBufferRange(target = 0x%x)", target);
- return NULL;
- }
-
- if (offset + length > bufObj->Size) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glMapBufferRange(offset + length > size)");
- return NULL;
- }
-
- if (_mesa_bufferobj_mapped(bufObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glMapBufferRange(buffer already mapped)");
- return NULL;
- }
-
- ASSERT(ctx->Driver.MapBufferRange);
- map = ctx->Driver.MapBufferRange(ctx, target, offset, length,
- access, bufObj);
- if (!map) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glMapBufferARB(map failed)");
- }
- else {
- /* The driver callback should have set all these fields.
- * This is important because other modules (like VBO) might call
- * the driver function directly.
- */
- ASSERT(bufObj->Pointer == map);
- ASSERT(bufObj->Length == length);
- ASSERT(bufObj->Offset == offset);
- ASSERT(bufObj->AccessFlags == access);
- }
-
- return map;
-}
-
-
-/**
- * See GL_ARB_map_buffer_range spec
- */
-void GLAPIENTRY
-_mesa_FlushMappedBufferRange(GLenum target, GLintptr offset, GLsizeiptr length)
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_buffer_object *bufObj;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (!ctx->Extensions.ARB_map_buffer_range) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glMapBufferRange(extension not supported)");
- return;
- }
-
- if (offset < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glMapBufferRange(offset = %ld)", (long)offset);
- return;
- }
-
- if (length < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glMapBufferRange(length = %ld)", (long)length);
- return;
- }
-
- bufObj = get_buffer(ctx, target);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glMapBufferRange(target = 0x%x)", target);
- return;
- }
-
- if (!_mesa_is_bufferobj(bufObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glMapBufferRange(current buffer is 0)");
- return;
- }
-
- if (!_mesa_bufferobj_mapped(bufObj)) {
- /* buffer is not mapped */
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glMapBufferRange(buffer is not mapped)");
- return;
- }
-
- if ((bufObj->AccessFlags & GL_MAP_FLUSH_EXPLICIT_BIT) == 0) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glMapBufferRange(GL_MAP_FLUSH_EXPLICIT_BIT not set)");
- return;
- }
-
- if (offset + length > bufObj->Length) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glMapBufferRange(offset %ld + length %ld > mapped length %ld)",
- (long)offset, (long)length, (long)bufObj->Length);
- return;
- }
-
- ASSERT(bufObj->AccessFlags & GL_MAP_WRITE_BIT);
-
- if (ctx->Driver.FlushMappedBufferRange)
- ctx->Driver.FlushMappedBufferRange(ctx, target, offset, length, bufObj);
-}
-
-
-#if FEATURE_APPLE_object_purgeable
-static GLenum
-_mesa_BufferObjectPurgeable(struct gl_context *ctx, GLuint name, GLenum option)
-{
- struct gl_buffer_object *bufObj;
- GLenum retval;
-
- bufObj = _mesa_lookup_bufferobj(ctx, name);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glObjectPurgeable(name = 0x%x)", name);
- return 0;
- }
- if (!_mesa_is_bufferobj(bufObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glObjectPurgeable(buffer 0)" );
- return 0;
- }
-
- if (bufObj->Purgeable) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glObjectPurgeable(name = 0x%x) is already purgeable", name);
- return GL_VOLATILE_APPLE;
- }
-
- bufObj->Purgeable = GL_TRUE;
-
- retval = GL_VOLATILE_APPLE;
- if (ctx->Driver.BufferObjectPurgeable)
- retval = ctx->Driver.BufferObjectPurgeable(ctx, bufObj, option);
-
- return retval;
-}
-
-
-static GLenum
-_mesa_RenderObjectPurgeable(struct gl_context *ctx, GLuint name, GLenum option)
-{
- struct gl_renderbuffer *bufObj;
- GLenum retval;
-
- bufObj = _mesa_lookup_renderbuffer(ctx, name);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glObjectUnpurgeable(name = 0x%x)", name);
- return 0;
- }
-
- if (bufObj->Purgeable) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glObjectPurgeable(name = 0x%x) is already purgeable", name);
- return GL_VOLATILE_APPLE;
- }
-
- bufObj->Purgeable = GL_TRUE;
-
- retval = GL_VOLATILE_APPLE;
- if (ctx->Driver.RenderObjectPurgeable)
- retval = ctx->Driver.RenderObjectPurgeable(ctx, bufObj, option);
-
- return retval;
-}
-
-
-static GLenum
-_mesa_TextureObjectPurgeable(struct gl_context *ctx, GLuint name, GLenum option)
-{
- struct gl_texture_object *bufObj;
- GLenum retval;
-
- bufObj = _mesa_lookup_texture(ctx, name);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glObjectPurgeable(name = 0x%x)", name);
- return 0;
- }
-
- if (bufObj->Purgeable) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glObjectPurgeable(name = 0x%x) is already purgeable", name);
- return GL_VOLATILE_APPLE;
- }
-
- bufObj->Purgeable = GL_TRUE;
-
- retval = GL_VOLATILE_APPLE;
- if (ctx->Driver.TextureObjectPurgeable)
- retval = ctx->Driver.TextureObjectPurgeable(ctx, bufObj, option);
-
- return retval;
-}
-
-
-GLenum GLAPIENTRY
-_mesa_ObjectPurgeableAPPLE(GLenum objectType, GLuint name, GLenum option)
-{
- GLenum retval;
-
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
-
- if (name == 0) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glObjectPurgeable(name = 0x%x)", name);
- return 0;
- }
-
- switch (option) {
- case GL_VOLATILE_APPLE:
- case GL_RELEASED_APPLE:
- /* legal */
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glObjectPurgeable(name = 0x%x) invalid option: %d",
- name, option);
- return 0;
- }
-
- switch (objectType) {
- case GL_TEXTURE:
- retval = _mesa_TextureObjectPurgeable (ctx, name, option);
- break;
- case GL_RENDERBUFFER_EXT:
- retval = _mesa_RenderObjectPurgeable (ctx, name, option);
- break;
- case GL_BUFFER_OBJECT_APPLE:
- retval = _mesa_BufferObjectPurgeable (ctx, name, option);
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glObjectPurgeable(name = 0x%x) invalid type: %d",
- name, objectType);
- return 0;
- }
-
- /* In strict conformance to the spec, we must only return VOLATILE when
- * when passed the VOLATILE option. Madness.
- *
- * XXX First fix the spec, then fix me.
- */
- return option == GL_VOLATILE_APPLE ? GL_VOLATILE_APPLE : retval;
-}
-
-
-static GLenum
-_mesa_BufferObjectUnpurgeable(struct gl_context *ctx, GLuint name, GLenum option)
-{
- struct gl_buffer_object *bufObj;
- GLenum retval;
-
- bufObj = _mesa_lookup_bufferobj(ctx, name);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glObjectUnpurgeable(name = 0x%x)", name);
- return 0;
- }
-
- if (! bufObj->Purgeable) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glObjectUnpurgeable(name = 0x%x) object is "
- " already \"unpurged\"", name);
- return 0;
- }
-
- bufObj->Purgeable = GL_FALSE;
-
- retval = option;
- if (ctx->Driver.BufferObjectUnpurgeable)
- retval = ctx->Driver.BufferObjectUnpurgeable(ctx, bufObj, option);
-
- return retval;
-}
-
-
-static GLenum
-_mesa_RenderObjectUnpurgeable(struct gl_context *ctx, GLuint name, GLenum option)
-{
- struct gl_renderbuffer *bufObj;
- GLenum retval;
-
- bufObj = _mesa_lookup_renderbuffer(ctx, name);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glObjectUnpurgeable(name = 0x%x)", name);
- return 0;
- }
-
- if (! bufObj->Purgeable) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glObjectUnpurgeable(name = 0x%x) object is "
- " already \"unpurged\"", name);
- return 0;
- }
-
- bufObj->Purgeable = GL_FALSE;
-
- retval = option;
- if (ctx->Driver.RenderObjectUnpurgeable)
- retval = ctx->Driver.RenderObjectUnpurgeable(ctx, bufObj, option);
-
- return retval;
-}
-
-
-static GLenum
-_mesa_TextureObjectUnpurgeable(struct gl_context *ctx, GLuint name, GLenum option)
-{
- struct gl_texture_object *bufObj;
- GLenum retval;
-
- bufObj = _mesa_lookup_texture(ctx, name);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glObjectUnpurgeable(name = 0x%x)", name);
- return 0;
- }
-
- if (! bufObj->Purgeable) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glObjectUnpurgeable(name = 0x%x) object is"
- " already \"unpurged\"", name);
- return 0;
- }
-
- bufObj->Purgeable = GL_FALSE;
-
- retval = option;
- if (ctx->Driver.TextureObjectUnpurgeable)
- retval = ctx->Driver.TextureObjectUnpurgeable(ctx, bufObj, option);
-
- return retval;
-}
-
-
-GLenum GLAPIENTRY
-_mesa_ObjectUnpurgeableAPPLE(GLenum objectType, GLuint name, GLenum option)
-{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
-
- if (name == 0) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glObjectUnpurgeable(name = 0x%x)", name);
- return 0;
- }
-
- switch (option) {
- case GL_RETAINED_APPLE:
- case GL_UNDEFINED_APPLE:
- /* legal */
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
- name, option);
- return 0;
- }
-
- switch (objectType) {
- case GL_BUFFER_OBJECT_APPLE:
- return _mesa_BufferObjectUnpurgeable(ctx, name, option);
- case GL_TEXTURE:
- return _mesa_TextureObjectUnpurgeable(ctx, name, option);
- case GL_RENDERBUFFER_EXT:
- return _mesa_RenderObjectUnpurgeable(ctx, name, option);
- default:
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
- name, objectType);
- return 0;
- }
-}
-
-
-static void
-_mesa_GetBufferObjectParameterivAPPLE(struct gl_context *ctx, GLuint name,
- GLenum pname, GLint* params)
-{
- struct gl_buffer_object *bufObj;
-
- bufObj = _mesa_lookup_bufferobj(ctx, name);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glGetObjectParameteriv(name = 0x%x) invalid object", name);
- return;
- }
-
- switch (pname) {
- case GL_PURGEABLE_APPLE:
- *params = bufObj->Purgeable;
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
- name, pname);
- break;
- }
-}
-
-
-static void
-_mesa_GetRenderObjectParameterivAPPLE(struct gl_context *ctx, GLuint name,
- GLenum pname, GLint* params)
-{
- struct gl_renderbuffer *bufObj;
-
- bufObj = _mesa_lookup_renderbuffer(ctx, name);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glObjectUnpurgeable(name = 0x%x)", name);
- return;
- }
-
- switch (pname) {
- case GL_PURGEABLE_APPLE:
- *params = bufObj->Purgeable;
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
- name, pname);
- break;
- }
-}
-
-
-static void
-_mesa_GetTextureObjectParameterivAPPLE(struct gl_context *ctx, GLuint name,
- GLenum pname, GLint* params)
-{
- struct gl_texture_object *bufObj;
-
- bufObj = _mesa_lookup_texture(ctx, name);
- if (!bufObj) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glObjectUnpurgeable(name = 0x%x)", name);
- return;
- }
-
- switch (pname) {
- case GL_PURGEABLE_APPLE:
- *params = bufObj->Purgeable;
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
- name, pname);
- break;
- }
-}
-
-
-void GLAPIENTRY
-_mesa_GetObjectParameterivAPPLE(GLenum objectType, GLuint name, GLenum pname,
- GLint* params)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if (name == 0) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glGetObjectParameteriv(name = 0x%x)", name);
- return;
- }
-
- switch (objectType) {
- case GL_TEXTURE:
- _mesa_GetTextureObjectParameterivAPPLE (ctx, name, pname, params);
- break;
- case GL_BUFFER_OBJECT_APPLE:
- _mesa_GetBufferObjectParameterivAPPLE (ctx, name, pname, params);
- break;
- case GL_RENDERBUFFER_EXT:
- _mesa_GetRenderObjectParameterivAPPLE (ctx, name, pname, params);
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
- name, objectType);
- }
-}
-
-#endif /* FEATURE_APPLE_object_purgeable */
+/*
+ * Mesa 3-D graphics library
+ * Version: 7.6
+ *
+ * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
+ * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * \file bufferobj.c
+ * \brief Functions for the GL_ARB_vertex/pixel_buffer_object extensions.
+ * \author Brian Paul, Ian Romanick
+ */
+
+
+#include "glheader.h"
+#include "enums.h"
+#include "hash.h"
+#include "imports.h"
+#include "image.h"
+#include "context.h"
+#include "bufferobj.h"
+#include "fbobject.h"
+#include "mfeatures.h"
+#include "mtypes.h"
+#include "texobj.h"
+
+
+/* Debug flags */
+/*#define VBO_DEBUG*/
+/*#define BOUNDS_CHECK*/
+
+
+#if FEATURE_OES_mapbuffer
+#define DEFAULT_ACCESS GL_MAP_WRITE_BIT
+#else
+#define DEFAULT_ACCESS (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)
+#endif
+
+
+/**
+ * Used as a placeholder for buffer objects between glGenBuffers() and
+ * glBindBuffer() so that glIsBuffer() can work correctly.
+ */
+static struct gl_buffer_object DummyBufferObject;
+
+
+/**
+ * Return pointer to address of a buffer object target.
+ * \param ctx the GL context
+ * \param target the buffer object target to be retrieved.
+ * \return pointer to pointer to the buffer object bound to \c target in the
+ * specified context or \c NULL if \c target is invalid.
+ */
+static INLINE struct gl_buffer_object **
+get_buffer_target(struct gl_context *ctx, GLenum target)
+{
+ switch (target) {
+ case GL_ARRAY_BUFFER_ARB:
+ return &ctx->Array.ArrayBufferObj;
+ case GL_ELEMENT_ARRAY_BUFFER_ARB:
+ return &ctx->Array.ElementArrayBufferObj;
+ case GL_PIXEL_PACK_BUFFER_EXT:
+ return &ctx->Pack.BufferObj;
+ case GL_PIXEL_UNPACK_BUFFER_EXT:
+ return &ctx->Unpack.BufferObj;
+ case GL_COPY_READ_BUFFER:
+ return &ctx->CopyReadBuffer;
+ case GL_COPY_WRITE_BUFFER:
+ return &ctx->CopyWriteBuffer;
+#if FEATURE_EXT_transform_feedback
+ case GL_TRANSFORM_FEEDBACK_BUFFER:
+ if (ctx->Extensions.EXT_transform_feedback) {
+ return &ctx->TransformFeedback.CurrentBuffer;
+ }
+ break;
+#endif
+ default:
+ return NULL;
+ }
+ return NULL;
+}
+
+
+/**
+ * Get the buffer object bound to the specified target in a GL context.
+ * \param ctx the GL context
+ * \param target the buffer object target to be retrieved.
+ * \return pointer to the buffer object bound to \c target in the
+ * specified context or \c NULL if \c target is invalid.
+ */
+static INLINE struct gl_buffer_object *
+get_buffer(struct gl_context *ctx, GLenum target)
+{
+ struct gl_buffer_object **bufObj = get_buffer_target(ctx, target);
+ if (bufObj)
+ return *bufObj;
+ return NULL;
+}
+
+
+/**
+ * Convert a GLbitfield describing the mapped buffer access flags
+ * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
+ */
+static GLenum
+simplified_access_mode(GLbitfield access)
+{
+ const GLbitfield rwFlags = GL_MAP_READ_BIT | GL_MAP_WRITE_BIT;
+ if ((access & rwFlags) == rwFlags)
+ return GL_READ_WRITE;
+ if ((access & GL_MAP_READ_BIT) == GL_MAP_READ_BIT)
+ return GL_READ_ONLY;
+ if ((access & GL_MAP_WRITE_BIT) == GL_MAP_WRITE_BIT)
+ return GL_WRITE_ONLY;
+ return GL_READ_WRITE; /* this should never happen, but no big deal */
+}
+
+
+/**
+ * Tests the subdata range parameters and sets the GL error code for
+ * \c glBufferSubDataARB and \c glGetBufferSubDataARB.
+ *
+ * \param ctx GL context.
+ * \param target Buffer object target on which to operate.
+ * \param offset Offset of the first byte of the subdata range.
+ * \param size Size, in bytes, of the subdata range.
+ * \param caller Name of calling function for recording errors.
+ * \return A pointer to the buffer object bound to \c target in the
+ * specified context or \c NULL if any of the parameter or state
+ * conditions for \c glBufferSubDataARB or \c glGetBufferSubDataARB
+ * are invalid.
+ *
+ * \sa glBufferSubDataARB, glGetBufferSubDataARB
+ */
+static struct gl_buffer_object *
+buffer_object_subdata_range_good( struct gl_context * ctx, GLenum target,
+ GLintptrARB offset, GLsizeiptrARB size,
+ const char *caller )
+{
+ struct gl_buffer_object *bufObj;
+
+ if (size < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "%s(size < 0)", caller);
+ return NULL;
+ }
+
+ if (offset < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "%s(offset < 0)", caller);
+ return NULL;
+ }
+
+ bufObj = get_buffer(ctx, target);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", caller);
+ return NULL;
+ }
+ if (!_mesa_is_bufferobj(bufObj)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "%s", caller);
+ return NULL;
+ }
+ if (offset + size > bufObj->Size) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "%s(size + offset > buffer size)", caller);
+ return NULL;
+ }
+ if (_mesa_bufferobj_mapped(bufObj)) {
+ /* Buffer is currently mapped */
+ _mesa_error(ctx, GL_INVALID_OPERATION, "%s", caller);
+ return NULL;
+ }
+
+ return bufObj;
+}
+
+
+/**
+ * Allocate and initialize a new buffer object.
+ *
+ * Default callback for the \c dd_function_table::NewBufferObject() hook.
+ */
+static struct gl_buffer_object *
+_mesa_new_buffer_object( struct gl_context *ctx, GLuint name, GLenum target )
+{
+ struct gl_buffer_object *obj;
+
+ (void) ctx;
+
+ obj = MALLOC_STRUCT(gl_buffer_object);
+ _mesa_initialize_buffer_object(obj, name, target);
+ return obj;
+}
+
+
+/**
+ * Delete a buffer object.
+ *
+ * Default callback for the \c dd_function_table::DeleteBuffer() hook.
+ */
+static void
+_mesa_delete_buffer_object( struct gl_context *ctx, struct gl_buffer_object *bufObj )
+{
+ (void) ctx;
+
+ if (bufObj->Data)
+ free(bufObj->Data);
+
+ /* assign strange values here to help w/ debugging */
+ bufObj->RefCount = -1000;
+ bufObj->Name = ~0;
+
+ _glthread_DESTROY_MUTEX(bufObj->Mutex);
+ free(bufObj);
+}
+
+
+
+/**
+ * Set ptr to bufObj w/ reference counting.
+ */
+void
+_mesa_reference_buffer_object(struct gl_context *ctx,
+ struct gl_buffer_object **ptr,
+ struct gl_buffer_object *bufObj)
+{
+ if (*ptr == bufObj)
+ return;
+
+ if (*ptr) {
+ /* Unreference the old buffer */
+ GLboolean deleteFlag = GL_FALSE;
+ struct gl_buffer_object *oldObj = *ptr;
+
+ _glthread_LOCK_MUTEX(oldObj->Mutex);
+ ASSERT(oldObj->RefCount > 0);
+ oldObj->RefCount--;
+#if 0
+ printf("BufferObj %p %d DECR to %d\n",
+ (void *) oldObj, oldObj->Name, oldObj->RefCount);
+#endif
+ deleteFlag = (oldObj->RefCount == 0);
+ _glthread_UNLOCK_MUTEX(oldObj->Mutex);
+
+ if (deleteFlag) {
+
+ /* some sanity checking: don't delete a buffer still in use */
+#if 0
+ /* unfortunately, these tests are invalid during context tear-down */
+ ASSERT(ctx->Array.ArrayBufferObj != bufObj);
+ ASSERT(ctx->Array.ElementArrayBufferObj != bufObj);
+ ASSERT(ctx->Array.ArrayObj->Vertex.BufferObj != bufObj);
+#endif
+
+ ASSERT(ctx->Driver.DeleteBuffer);
+ ctx->Driver.DeleteBuffer(ctx, oldObj);
+ }
+
+ *ptr = NULL;
+ }
+ ASSERT(!*ptr);
+
+ if (bufObj) {
+ /* reference new buffer */
+ _glthread_LOCK_MUTEX(bufObj->Mutex);
+ if (bufObj->RefCount == 0) {
+ /* this buffer's being deleted (look just above) */
+ /* Not sure this can every really happen. Warn if it does. */
+ _mesa_problem(NULL, "referencing deleted buffer object");
+ *ptr = NULL;
+ }
+ else {
+ bufObj->RefCount++;
+#if 0
+ printf("BufferObj %p %d INCR to %d\n",
+ (void *) bufObj, bufObj->Name, bufObj->RefCount);
+#endif
+ *ptr = bufObj;
+ }
+ _glthread_UNLOCK_MUTEX(bufObj->Mutex);
+ }
+}
+
+
+/**
+ * Initialize a buffer object to default values.
+ */
+void
+_mesa_initialize_buffer_object( struct gl_buffer_object *obj,
+ GLuint name, GLenum target )
+{
+ (void) target;
+
+ memset(obj, 0, sizeof(struct gl_buffer_object));
+ _glthread_INIT_MUTEX(obj->Mutex);
+ obj->RefCount = 1;
+ obj->Name = name;
+ obj->Usage = GL_STATIC_DRAW_ARB;
+ obj->AccessFlags = DEFAULT_ACCESS;
+}
+
+
+/**
+ * Allocate space for and store data in a buffer object. Any data that was
+ * previously stored in the buffer object is lost. If \c data is \c NULL,
+ * memory will be allocated, but no copy will occur.
+ *
+ * This is the default callback for \c dd_function_table::BufferData()
+ * Note that all GL error checking will have been done already.
+ *
+ * \param ctx GL context.
+ * \param target Buffer object target on which to operate.
+ * \param size Size, in bytes, of the new data store.
+ * \param data Pointer to the data to store in the buffer object. This
+ * pointer may be \c NULL.
+ * \param usage Hints about how the data will be used.
+ * \param bufObj Object to be used.
+ *
+ * \return GL_TRUE for success, GL_FALSE for failure
+ * \sa glBufferDataARB, dd_function_table::BufferData.
+ */
+static GLboolean
+_mesa_buffer_data( struct gl_context *ctx, GLenum target, GLsizeiptrARB size,
+ const GLvoid * data, GLenum usage,
+ struct gl_buffer_object * bufObj )
+{
+ void * new_data;
+
+ (void) ctx; (void) target;
+
+ new_data = _mesa_realloc( bufObj->Data, bufObj->Size, size );
+ if (new_data) {
+ bufObj->Data = (GLubyte *) new_data;
+ bufObj->Size = size;
+ bufObj->Usage = usage;
+
+ if (data) {
+ memcpy( bufObj->Data, data, size );
+ }
+
+ return GL_TRUE;
+ }
+ else {
+ return GL_FALSE;
+ }
+}
+
+
+/**
+ * Replace data in a subrange of buffer object. If the data range
+ * specified by \c size + \c offset extends beyond the end of the buffer or
+ * if \c data is \c NULL, no copy is performed.
+ *
+ * This is the default callback for \c dd_function_table::BufferSubData()
+ * Note that all GL error checking will have been done already.
+ *
+ * \param ctx GL context.
+ * \param target Buffer object target on which to operate.
+ * \param offset Offset of the first byte to be modified.
+ * \param size Size, in bytes, of the data range.
+ * \param data Pointer to the data to store in the buffer object.
+ * \param bufObj Object to be used.
+ *
+ * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
+ */
+static void
+_mesa_buffer_subdata( struct gl_context *ctx, GLenum target, GLintptrARB offset,
+ GLsizeiptrARB size, const GLvoid * data,
+ struct gl_buffer_object * bufObj )
+{
+ (void) ctx; (void) target;
+
+ /* this should have been caught in _mesa_BufferSubData() */
+ ASSERT(size + offset <= bufObj->Size);
+
+ if (bufObj->Data) {
+ memcpy( (GLubyte *) bufObj->Data + offset, data, size );
+ }
+}
+
+
+/**
+ * Retrieve data from a subrange of buffer object. If the data range
+ * specified by \c size + \c offset extends beyond the end of the buffer or
+ * if \c data is \c NULL, no copy is performed.
+ *
+ * This is the default callback for \c dd_function_table::GetBufferSubData()
+ * Note that all GL error checking will have been done already.
+ *
+ * \param ctx GL context.
+ * \param target Buffer object target on which to operate.
+ * \param offset Offset of the first byte to be fetched.
+ * \param size Size, in bytes, of the data range.
+ * \param data Destination for data
+ * \param bufObj Object to be used.
+ *
+ * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
+ */
+static void
+_mesa_buffer_get_subdata( struct gl_context *ctx, GLenum target, GLintptrARB offset,
+ GLsizeiptrARB size, GLvoid * data,
+ struct gl_buffer_object * bufObj )
+{
+ (void) ctx; (void) target;
+
+ if (bufObj->Data && ((GLsizeiptrARB) (size + offset) <= bufObj->Size)) {
+ memcpy( data, (GLubyte *) bufObj->Data + offset, size );
+ }
+}
+
+
+/**
+ * Default callback for \c dd_function_tabel::MapBuffer().
+ *
+ * The function parameters will have been already tested for errors.
+ *
+ * \param ctx GL context.
+ * \param target Buffer object target on which to operate.
+ * \param access Information about how the buffer will be accessed.
+ * \param bufObj Object to be mapped.
+ * \return A pointer to the object's internal data store that can be accessed
+ * by the processor
+ *
+ * \sa glMapBufferARB, dd_function_table::MapBuffer
+ */
+static void *
+_mesa_buffer_map( struct gl_context *ctx, GLenum target, GLenum access,
+ struct gl_buffer_object *bufObj )
+{
+ (void) ctx;
+ (void) target;
+ (void) access;
+ /* Just return a direct pointer to the data */
+ if (_mesa_bufferobj_mapped(bufObj)) {
+ /* already mapped! */
+ return NULL;
+ }
+ bufObj->Pointer = bufObj->Data;
+ bufObj->Length = bufObj->Size;
+ bufObj->Offset = 0;
+ return bufObj->Pointer;
+}
+
+
+/**
+ * Default fallback for \c dd_function_table::MapBufferRange().
+ * Called via glMapBufferRange().
+ */
+static void *
+_mesa_buffer_map_range( struct gl_context *ctx, GLenum target, GLintptr offset,
+ GLsizeiptr length, GLbitfield access,
+ struct gl_buffer_object *bufObj )
+{
+ (void) ctx;
+ (void) target;
+ assert(!_mesa_bufferobj_mapped(bufObj));
+ /* Just return a direct pointer to the data */
+ bufObj->Pointer = bufObj->Data + offset;
+ bufObj->Length = length;
+ bufObj->Offset = offset;
+ bufObj->AccessFlags = access;
+ return bufObj->Pointer;
+}
+
+
+/**
+ * Default fallback for \c dd_function_table::FlushMappedBufferRange().
+ * Called via glFlushMappedBufferRange().
+ */
+static void
+_mesa_buffer_flush_mapped_range( struct gl_context *ctx, GLenum target,
+ GLintptr offset, GLsizeiptr length,
+ struct gl_buffer_object *obj )
+{
+ (void) ctx;
+ (void) target;
+ (void) offset;
+ (void) length;
+ (void) obj;
+ /* no-op */
+}
+
+
+/**
+ * Default callback for \c dd_function_table::MapBuffer().
+ *
+ * The input parameters will have been already tested for errors.
+ *
+ * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
+ */
+static GLboolean
+_mesa_buffer_unmap( struct gl_context *ctx, GLenum target,
+ struct gl_buffer_object *bufObj )
+{
+ (void) ctx;
+ (void) target;
+ /* XXX we might assert here that bufObj->Pointer is non-null */
+ bufObj->Pointer = NULL;
+ bufObj->Length = 0;
+ bufObj->Offset = 0;
+ bufObj->AccessFlags = 0x0;
+ return GL_TRUE;
+}
+
+
+/**
+ * Default fallback for \c dd_function_table::CopyBufferSubData().
+ * Called via glCopyBuffserSubData().
+ */
+static void
+_mesa_copy_buffer_subdata(struct gl_context *ctx,
+ struct gl_buffer_object *src,
+ struct gl_buffer_object *dst,
+ GLintptr readOffset, GLintptr writeOffset,
+ GLsizeiptr size)
+{
+ GLubyte *srcPtr, *dstPtr;
+
+ /* buffer should not already be mapped */
+ assert(!_mesa_bufferobj_mapped(src));
+ assert(!_mesa_bufferobj_mapped(dst));
+
+ srcPtr = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_COPY_READ_BUFFER,
+ GL_READ_ONLY, src);
+ dstPtr = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_COPY_WRITE_BUFFER,
+ GL_WRITE_ONLY, dst);
+
+ if (srcPtr && dstPtr)
+ memcpy(dstPtr + writeOffset, srcPtr + readOffset, size);
+
+ ctx->Driver.UnmapBuffer(ctx, GL_COPY_READ_BUFFER, src);
+ ctx->Driver.UnmapBuffer(ctx, GL_COPY_WRITE_BUFFER, dst);
+}
+
+
+
+/**
+ * Initialize the state associated with buffer objects
+ */
+void
+_mesa_init_buffer_objects( struct gl_context *ctx )
+{
+ memset(&DummyBufferObject, 0, sizeof(DummyBufferObject));
+ DummyBufferObject.RefCount = 1000*1000*1000; /* never delete */
+
+ _mesa_reference_buffer_object(ctx, &ctx->Array.ArrayBufferObj,
+ ctx->Shared->NullBufferObj);
+ _mesa_reference_buffer_object(ctx, &ctx->Array.ElementArrayBufferObj,
+ ctx->Shared->NullBufferObj);
+
+ _mesa_reference_buffer_object(ctx, &ctx->CopyReadBuffer,
+ ctx->Shared->NullBufferObj);
+ _mesa_reference_buffer_object(ctx, &ctx->CopyWriteBuffer,
+ ctx->Shared->NullBufferObj);
+}
+
+
+void
+_mesa_free_buffer_objects( struct gl_context *ctx )
+{
+ _mesa_reference_buffer_object(ctx, &ctx->Array.ArrayBufferObj, NULL);
+ _mesa_reference_buffer_object(ctx, &ctx->Array.ElementArrayBufferObj, NULL);
+
+ _mesa_reference_buffer_object(ctx, &ctx->CopyReadBuffer, NULL);
+ _mesa_reference_buffer_object(ctx, &ctx->CopyWriteBuffer, NULL);
+}
+
+
+/**
+ * Bind the specified target to buffer for the specified context.
+ * Called by glBindBuffer() and other functions.
+ */
+static void
+bind_buffer_object(struct gl_context *ctx, GLenum target, GLuint buffer)
+{
+ struct gl_buffer_object *oldBufObj;
+ struct gl_buffer_object *newBufObj = NULL;
+ struct gl_buffer_object **bindTarget = NULL;
+
+ bindTarget = get_buffer_target(ctx, target);
+ if (!bindTarget) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferARB(target 0x%x)", target);
+ return;
+ }
+
+ /* Get pointer to old buffer object (to be unbound) */
+ oldBufObj = *bindTarget;
+ if (oldBufObj && oldBufObj->Name == buffer)
+ return; /* rebinding the same buffer object- no change */
+
+ /*
+ * Get pointer to new buffer object (newBufObj)
+ */
+ if (buffer == 0) {
+ /* The spec says there's not a buffer object named 0, but we use
+ * one internally because it simplifies things.
+ */
+ newBufObj = ctx->Shared->NullBufferObj;
+ }
+ else {
+ /* non-default buffer object */
+ newBufObj = _mesa_lookup_bufferobj(ctx, buffer);
+ if (!newBufObj || newBufObj == &DummyBufferObject) {
+ /* If this is a new buffer object id, or one which was generated but
+ * never used before, allocate a buffer object now.
+ */
+ ASSERT(ctx->Driver.NewBufferObject);
+ newBufObj = ctx->Driver.NewBufferObject(ctx, buffer, target);
+ if (!newBufObj) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindBufferARB");
+ return;
+ }
+ _mesa_HashInsert(ctx->Shared->BufferObjects, buffer, newBufObj);
+ }
+ }
+
+ /* bind new buffer */
+ _mesa_reference_buffer_object(ctx, bindTarget, newBufObj);
+
+ /* Pass BindBuffer call to device driver */
+ if (ctx->Driver.BindBuffer)
+ ctx->Driver.BindBuffer( ctx, target, newBufObj );
+}
+
+
+/**
+ * Update the default buffer objects in the given context to reference those
+ * specified in the shared state and release those referencing the old
+ * shared state.
+ */
+void
+_mesa_update_default_objects_buffer_objects(struct gl_context *ctx)
+{
+ /* Bind the NullBufferObj to remove references to those
+ * in the shared context hash table.
+ */
+ bind_buffer_object( ctx, GL_ARRAY_BUFFER_ARB, 0);
+ bind_buffer_object( ctx, GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
+ bind_buffer_object( ctx, GL_PIXEL_PACK_BUFFER_ARB, 0);
+ bind_buffer_object( ctx, GL_PIXEL_UNPACK_BUFFER_ARB, 0);
+}
+
+
+/**
+ * When we're about to read pixel data out of a PBO (via glDrawPixels,
+ * glTexImage, etc) or write data into a PBO (via glReadPixels,
+ * glGetTexImage, etc) we call this function to check that we're not
+ * going to read out of bounds.
+ *
+ * XXX This would also be a convenient time to check that the PBO isn't
+ * currently mapped. Whoever calls this function should check for that.
+ * Remember, we can't use a PBO when it's mapped!
+ *
+ * If we're not using a PBO, this is a no-op.
+ *
+ * \param width width of image to read/write
+ * \param height height of image to read/write
+ * \param depth depth of image to read/write
+ * \param format format of image to read/write
+ * \param type datatype of image to read/write
+ * \param ptr the user-provided pointer/offset
+ * \return GL_TRUE if the PBO access is OK, GL_FALSE if the access would
+ * go out of bounds.
+ */
+GLboolean
+_mesa_validate_pbo_access(GLuint dimensions,
+ const struct gl_pixelstore_attrib *pack,
+ GLsizei width, GLsizei height, GLsizei depth,
+ GLenum format, GLenum type, const GLvoid *ptr)
+{
+ GLvoid *start, *end;
+ const GLubyte *sizeAddr; /* buffer size, cast to a pointer */
+
+ if (!_mesa_is_bufferobj(pack->BufferObj))
+ return GL_TRUE; /* no PBO, OK */
+
+ if (pack->BufferObj->Size == 0)
+ /* no buffer! */
+ return GL_FALSE;
+
+ /* get address of first pixel we'll read */
+ start = _mesa_image_address(dimensions, pack, ptr, width, height,
+ format, type, 0, 0, 0);
+
+ /* get address just past the last pixel we'll read */
+ end = _mesa_image_address(dimensions, pack, ptr, width, height,
+ format, type, depth-1, height-1, width);
+
+
+ sizeAddr = ((const GLubyte *) 0) + pack->BufferObj->Size;
+
+ if ((const GLubyte *) start > sizeAddr) {
+ /* This will catch negative values / wrap-around */
+ return GL_FALSE;
+ }
+ if ((const GLubyte *) end > sizeAddr) {
+ /* Image read goes beyond end of buffer */
+ return GL_FALSE;
+ }
+
+ /* OK! */
+ return GL_TRUE;
+}
+
+
+/**
+ * For commands that read from a PBO (glDrawPixels, glTexImage,
+ * glPolygonStipple, etc), if we're reading from a PBO, map it read-only
+ * and return the pointer into the PBO. If we're not reading from a
+ * PBO, return \p src as-is.
+ * If non-null return, must call _mesa_unmap_pbo_source() when done.
+ *
+ * \return NULL if error, else pointer to start of data
+ */
+const GLvoid *
+_mesa_map_pbo_source(struct gl_context *ctx,
+ const struct gl_pixelstore_attrib *unpack,
+ const GLvoid *src)
+{
+ const GLubyte *buf;
+
+ if (_mesa_is_bufferobj(unpack->BufferObj)) {
+ /* unpack from PBO */
+ buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+ GL_READ_ONLY_ARB,
+ unpack->BufferObj);
+ if (!buf)
+ return NULL;
+
+ buf = ADD_POINTERS(buf, src);
+ }
+ else {
+ /* unpack from normal memory */
+ buf = src;
+ }
+
+ return buf;
+}
+
+
+/**
+ * Combine PBO-read validation and mapping.
+ * If any GL errors are detected, they'll be recorded and NULL returned.
+ * \sa _mesa_validate_pbo_access
+ * \sa _mesa_map_pbo_source
+ * A call to this function should have a matching call to
+ * _mesa_unmap_pbo_source().
+ */
+const GLvoid *
+_mesa_map_validate_pbo_source(struct gl_context *ctx,
+ GLuint dimensions,
+ const struct gl_pixelstore_attrib *unpack,
+ GLsizei width, GLsizei height, GLsizei depth,
+ GLenum format, GLenum type, const GLvoid *ptr,
+ const char *where)
+{
+ ASSERT(dimensions == 1 || dimensions == 2 || dimensions == 3);
+
+ if (!_mesa_is_bufferobj(unpack->BufferObj)) {
+ /* non-PBO access: no validation to be done */
+ return ptr;
+ }
+
+ if (!_mesa_validate_pbo_access(dimensions, unpack,
+ width, height, depth, format, type, ptr)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "%s(out of bounds PBO access)", where);
+ return NULL;
+ }
+
+ if (_mesa_bufferobj_mapped(unpack->BufferObj)) {
+ /* buffer is already mapped - that's an error */
+ _mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", where);
+ return NULL;
+ }
+
+ ptr = _mesa_map_pbo_source(ctx, unpack, ptr);
+ return ptr;
+}
+
+
+/**
+ * Counterpart to _mesa_map_pbo_source()
+ */
+void
+_mesa_unmap_pbo_source(struct gl_context *ctx,
+ const struct gl_pixelstore_attrib *unpack)
+{
+ ASSERT(unpack != &ctx->Pack); /* catch pack/unpack mismatch */
+ if (_mesa_is_bufferobj(unpack->BufferObj)) {
+ ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+ unpack->BufferObj);
+ }
+}
+
+
+/**
+ * For commands that write to a PBO (glReadPixels, glGetColorTable, etc),
+ * if we're writing to a PBO, map it write-only and return the pointer
+ * into the PBO. If we're not writing to a PBO, return \p dst as-is.
+ * If non-null return, must call _mesa_unmap_pbo_dest() when done.
+ *
+ * \return NULL if error, else pointer to start of data
+ */
+void *
+_mesa_map_pbo_dest(struct gl_context *ctx,
+ const struct gl_pixelstore_attrib *pack,
+ GLvoid *dest)
+{
+ void *buf;
+
+ if (_mesa_is_bufferobj(pack->BufferObj)) {
+ /* pack into PBO */
+ buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
+ GL_WRITE_ONLY_ARB,
+ pack->BufferObj);
+ if (!buf)
+ return NULL;
+
+ buf = ADD_POINTERS(buf, dest);
+ }
+ else {
+ /* pack to normal memory */
+ buf = dest;
+ }
+
+ return buf;
+}
+
+
+/**
+ * Combine PBO-write validation and mapping.
+ * If any GL errors are detected, they'll be recorded and NULL returned.
+ * \sa _mesa_validate_pbo_access
+ * \sa _mesa_map_pbo_dest
+ * A call to this function should have a matching call to
+ * _mesa_unmap_pbo_dest().
+ */
+GLvoid *
+_mesa_map_validate_pbo_dest(struct gl_context *ctx,
+ GLuint dimensions,
+ const struct gl_pixelstore_attrib *unpack,
+ GLsizei width, GLsizei height, GLsizei depth,
+ GLenum format, GLenum type, GLvoid *ptr,
+ const char *where)
+{
+ ASSERT(dimensions == 1 || dimensions == 2 || dimensions == 3);
+
+ if (!_mesa_is_bufferobj(unpack->BufferObj)) {
+ /* non-PBO access: no validation to be done */
+ return ptr;
+ }
+
+ if (!_mesa_validate_pbo_access(dimensions, unpack,
+ width, height, depth, format, type, ptr)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "%s(out of bounds PBO access)", where);
+ return NULL;
+ }
+
+ if (_mesa_bufferobj_mapped(unpack->BufferObj)) {
+ /* buffer is already mapped - that's an error */
+ _mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", where);
+ return NULL;
+ }
+
+ ptr = _mesa_map_pbo_dest(ctx, unpack, ptr);
+ return ptr;
+}
+
+
+/**
+ * Counterpart to _mesa_map_pbo_dest()
+ */
+void
+_mesa_unmap_pbo_dest(struct gl_context *ctx,
+ const struct gl_pixelstore_attrib *pack)
+{
+ ASSERT(pack != &ctx->Unpack); /* catch pack/unpack mismatch */
+ if (_mesa_is_bufferobj(pack->BufferObj)) {
+ ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, pack->BufferObj);
+ }
+}
+
+
+
+/**
+ * Return the gl_buffer_object for the given ID.
+ * Always return NULL for ID 0.
+ */
+struct gl_buffer_object *
+_mesa_lookup_bufferobj(struct gl_context *ctx, GLuint buffer)
+{
+ if (buffer == 0)
+ return NULL;
+ else
+ return (struct gl_buffer_object *)
+ _mesa_HashLookup(ctx->Shared->BufferObjects, buffer);
+}
+
+
+/**
+ * If *ptr points to obj, set ptr = the Null/default buffer object.
+ * This is a helper for buffer object deletion.
+ * The GL spec says that deleting a buffer object causes it to get
+ * unbound from all arrays in the current context.
+ */
+static void
+unbind(struct gl_context *ctx,
+ struct gl_buffer_object **ptr,
+ struct gl_buffer_object *obj)
+{
+ if (*ptr == obj) {
+ _mesa_reference_buffer_object(ctx, ptr, ctx->Shared->NullBufferObj);
+ }
+}
+
+
+/**
+ * Plug default/fallback buffer object functions into the device
+ * driver hooks.
+ */
+void
+_mesa_init_buffer_object_functions(struct dd_function_table *driver)
+{
+ /* GL_ARB_vertex/pixel_buffer_object */
+ driver->NewBufferObject = _mesa_new_buffer_object;
+ driver->DeleteBuffer = _mesa_delete_buffer_object;
+ driver->BindBuffer = NULL;
+ driver->BufferData = _mesa_buffer_data;
+ driver->BufferSubData = _mesa_buffer_subdata;
+ driver->GetBufferSubData = _mesa_buffer_get_subdata;
+ driver->MapBuffer = _mesa_buffer_map;
+ driver->UnmapBuffer = _mesa_buffer_unmap;
+
+ /* GL_ARB_map_buffer_range */
+ driver->MapBufferRange = _mesa_buffer_map_range;
+ driver->FlushMappedBufferRange = _mesa_buffer_flush_mapped_range;
+
+ /* GL_ARB_copy_buffer */
+ driver->CopyBufferSubData = _mesa_copy_buffer_subdata;
+}
+
+
+
+/**********************************************************************/
+/* API Functions */
+/**********************************************************************/
+
+void GLAPIENTRY
+_mesa_BindBufferARB(GLenum target, GLuint buffer)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glBindBuffer(%s, %u)\n",
+ _mesa_lookup_enum_by_nr(target), buffer);
+
+ bind_buffer_object(ctx, target, buffer);
+}
+
+
+/**
+ * Delete a set of buffer objects.
+ *
+ * \param n Number of buffer objects to delete.
+ * \param ids Array of \c n buffer object IDs.
+ */
+void GLAPIENTRY
+_mesa_DeleteBuffersARB(GLsizei n, const GLuint *ids)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLsizei i;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (n < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glDeleteBuffersARB(n)");
+ return;
+ }
+
+ _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
+
+ for (i = 0; i < n; i++) {
+ struct gl_buffer_object *bufObj = _mesa_lookup_bufferobj(ctx, ids[i]);
+ if (bufObj) {
+ struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
+ GLuint j;
+
+ ASSERT(bufObj->Name == ids[i] || bufObj == &DummyBufferObject);
+
+ if (_mesa_bufferobj_mapped(bufObj)) {
+ /* if mapped, unmap it now */
+ ctx->Driver.UnmapBuffer(ctx, 0, bufObj);
+ bufObj->AccessFlags = DEFAULT_ACCESS;
+ bufObj->Pointer = NULL;
+ }
+
+ /* unbind any vertex pointers bound to this buffer */
+ unbind(ctx, &arrayObj->Vertex.BufferObj, bufObj);
+ unbind(ctx, &arrayObj->Weight.BufferObj, bufObj);
+ unbind(ctx, &arrayObj->Normal.BufferObj, bufObj);
+ unbind(ctx, &arrayObj->Color.BufferObj, bufObj);
+ unbind(ctx, &arrayObj->SecondaryColor.BufferObj, bufObj);
+ unbind(ctx, &arrayObj->FogCoord.BufferObj, bufObj);
+ unbind(ctx, &arrayObj->Index.BufferObj, bufObj);
+ unbind(ctx, &arrayObj->EdgeFlag.BufferObj, bufObj);
+ for (j = 0; j < Elements(arrayObj->TexCoord); j++) {
+ unbind(ctx, &arrayObj->TexCoord[j].BufferObj, bufObj);
+ }
+ for (j = 0; j < Elements(arrayObj->VertexAttrib); j++) {
+ unbind(ctx, &arrayObj->VertexAttrib[j].BufferObj, bufObj);
+ }
+
+ if (ctx->Array.ArrayBufferObj == bufObj) {
+ _mesa_BindBufferARB( GL_ARRAY_BUFFER_ARB, 0 );
+ }
+ if (ctx->Array.ElementArrayBufferObj == bufObj) {
+ _mesa_BindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, 0 );
+ }
+
+ /* unbind any pixel pack/unpack pointers bound to this buffer */
+ if (ctx->Pack.BufferObj == bufObj) {
+ _mesa_BindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, 0 );
+ }
+ if (ctx->Unpack.BufferObj == bufObj) {
+ _mesa_BindBufferARB( GL_PIXEL_UNPACK_BUFFER_EXT, 0 );
+ }
+
+ /* The ID is immediately freed for re-use */
+ _mesa_HashRemove(ctx->Shared->BufferObjects, ids[i]);
+ _mesa_reference_buffer_object(ctx, &bufObj, NULL);
+ }
+ }
+
+ _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
+}
+
+
+/**
+ * Generate a set of unique buffer object IDs and store them in \c buffer.
+ *
+ * \param n Number of IDs to generate.
+ * \param buffer Array of \c n locations to store the IDs.
+ */
+void GLAPIENTRY
+_mesa_GenBuffersARB(GLsizei n, GLuint *buffer)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLuint first;
+ GLint i;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glGenBuffers(%d)\n", n);
+
+ if (n < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glGenBuffersARB");
+ return;
+ }
+
+ if (!buffer) {
+ return;
+ }
+
+ /*
+ * This must be atomic (generation and allocation of buffer object IDs)
+ */
+ _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
+
+ first = _mesa_HashFindFreeKeyBlock(ctx->Shared->BufferObjects, n);
+
+ /* Insert the ID and pointer to dummy buffer object into hash table */
+ for (i = 0; i < n; i++) {
+ _mesa_HashInsert(ctx->Shared->BufferObjects, first + i,
+ &DummyBufferObject);
+ buffer[i] = first + i;
+ }
+
+ _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
+}
+
+
+/**
+ * Determine if ID is the name of a buffer object.
+ *
+ * \param id ID of the potential buffer object.
+ * \return \c GL_TRUE if \c id is the name of a buffer object,
+ * \c GL_FALSE otherwise.
+ */
+GLboolean GLAPIENTRY
+_mesa_IsBufferARB(GLuint id)
+{
+ struct gl_buffer_object *bufObj;
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+
+ _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
+ bufObj = _mesa_lookup_bufferobj(ctx, id);
+ _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
+
+ return bufObj && bufObj != &DummyBufferObject;
+}
+
+
+void GLAPIENTRY
+_mesa_BufferDataARB(GLenum target, GLsizeiptrARB size,
+ const GLvoid * data, GLenum usage)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_buffer_object *bufObj;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glBufferData(%s, %ld, %p, %s)\n",
+ _mesa_lookup_enum_by_nr(target),
+ (long int) size, data,
+ _mesa_lookup_enum_by_nr(usage));
+
+ if (size < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glBufferDataARB(size < 0)");
+ return;
+ }
+
+ switch (usage) {
+ case GL_STREAM_DRAW_ARB:
+ case GL_STREAM_READ_ARB:
+ case GL_STREAM_COPY_ARB:
+ case GL_STATIC_DRAW_ARB:
+ case GL_STATIC_READ_ARB:
+ case GL_STATIC_COPY_ARB:
+ case GL_DYNAMIC_DRAW_ARB:
+ case GL_DYNAMIC_READ_ARB:
+ case GL_DYNAMIC_COPY_ARB:
+ /* OK */
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBufferDataARB(usage)");
+ return;
+ }
+
+ bufObj = get_buffer(ctx, target);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBufferDataARB(target)" );
+ return;
+ }
+ if (!_mesa_is_bufferobj(bufObj)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glBufferDataARB(buffer 0)" );
+ return;
+ }
+
+ if (_mesa_bufferobj_mapped(bufObj)) {
+ /* Unmap the existing buffer. We'll replace it now. Not an error. */
+ ctx->Driver.UnmapBuffer(ctx, target, bufObj);
+ bufObj->AccessFlags = DEFAULT_ACCESS;
+ ASSERT(bufObj->Pointer == NULL);
+ }
+
+ FLUSH_VERTICES(ctx, _NEW_BUFFER_OBJECT);
+
+ bufObj->Written = GL_TRUE;
+
+#ifdef VBO_DEBUG
+ printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
+ bufObj->Name, size, data, usage);
+#endif
+
+#ifdef BOUNDS_CHECK
+ size += 100;
+#endif
+
+ ASSERT(ctx->Driver.BufferData);
+ if (!ctx->Driver.BufferData( ctx, target, size, data, usage, bufObj )) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBufferDataARB()");
+ }
+}
+
+
+void GLAPIENTRY
+_mesa_BufferSubDataARB(GLenum target, GLintptrARB offset,
+ GLsizeiptrARB size, const GLvoid * data)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_buffer_object *bufObj;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ bufObj = buffer_object_subdata_range_good( ctx, target, offset, size,
+ "glBufferSubDataARB" );
+ if (!bufObj) {
+ /* error already recorded */
+ return;
+ }
+
+ if (size == 0)
+ return;
+
+ bufObj->Written = GL_TRUE;
+
+ ASSERT(ctx->Driver.BufferSubData);
+ ctx->Driver.BufferSubData( ctx, target, offset, size, data, bufObj );
+}
+
+
+void GLAPIENTRY
+_mesa_GetBufferSubDataARB(GLenum target, GLintptrARB offset,
+ GLsizeiptrARB size, void * data)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_buffer_object *bufObj;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ bufObj = buffer_object_subdata_range_good( ctx, target, offset, size,
+ "glGetBufferSubDataARB" );
+ if (!bufObj) {
+ /* error already recorded */
+ return;
+ }
+
+ ASSERT(ctx->Driver.GetBufferSubData);
+ ctx->Driver.GetBufferSubData( ctx, target, offset, size, data, bufObj );
+}
+
+
+void * GLAPIENTRY
+_mesa_MapBufferARB(GLenum target, GLenum access)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_buffer_object * bufObj;
+ GLbitfield accessFlags;
+ void *map;
+
+ ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
+
+ switch (access) {
+ case GL_READ_ONLY_ARB:
+ accessFlags = GL_MAP_READ_BIT;
+ break;
+ case GL_WRITE_ONLY_ARB:
+ accessFlags = GL_MAP_WRITE_BIT;
+ break;
+ case GL_READ_WRITE_ARB:
+ accessFlags = GL_MAP_READ_BIT | GL_MAP_WRITE_BIT;
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM, "glMapBufferARB(access)");
+ return NULL;
+ }
+
+ bufObj = get_buffer(ctx, target);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glMapBufferARB(target)" );
+ return NULL;
+ }
+ if (!_mesa_is_bufferobj(bufObj)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glMapBufferARB(buffer 0)" );
+ return NULL;
+ }
+ if (_mesa_bufferobj_mapped(bufObj)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glMapBufferARB(already mapped)");
+ return NULL;
+ }
+
+ ASSERT(ctx->Driver.MapBuffer);
+ map = ctx->Driver.MapBuffer( ctx, target, access, bufObj );
+ if (!map) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glMapBufferARB(map failed)");
+ return NULL;
+ }
+ else {
+ /* The driver callback should have set these fields.
+ * This is important because other modules (like VBO) might call
+ * the driver function directly.
+ */
+ ASSERT(bufObj->Pointer == map);
+ ASSERT(bufObj->Length == bufObj->Size);
+ ASSERT(bufObj->Offset == 0);
+ bufObj->AccessFlags = accessFlags;
+ }
+
+ if (access == GL_WRITE_ONLY_ARB || access == GL_READ_WRITE_ARB)
+ bufObj->Written = GL_TRUE;
+
+#ifdef VBO_DEBUG
+ printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n",
+ bufObj->Name, bufObj->Size, access);
+ if (access == GL_WRITE_ONLY_ARB) {
+ GLuint i;
+ GLubyte *b = (GLubyte *) bufObj->Pointer;
+ for (i = 0; i < bufObj->Size; i++)
+ b[i] = i & 0xff;
+ }
+#endif
+
+#ifdef BOUNDS_CHECK
+ {
+ GLubyte *buf = (GLubyte *) bufObj->Pointer;
+ GLuint i;
+ /* buffer is 100 bytes larger than requested, fill with magic value */
+ for (i = 0; i < 100; i++) {
+ buf[bufObj->Size - i - 1] = 123;
+ }
+ }
+#endif
+
+ return bufObj->Pointer;
+}
+
+
+GLboolean GLAPIENTRY
+_mesa_UnmapBufferARB(GLenum target)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_buffer_object *bufObj;
+ GLboolean status = GL_TRUE;
+ ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+
+ bufObj = get_buffer(ctx, target);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glUnmapBufferARB(target)" );
+ return GL_FALSE;
+ }
+ if (!_mesa_is_bufferobj(bufObj)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glUnmapBufferARB" );
+ return GL_FALSE;
+ }
+ if (!_mesa_bufferobj_mapped(bufObj)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glUnmapBufferARB");
+ return GL_FALSE;
+ }
+
+#ifdef BOUNDS_CHECK
+ if (bufObj->Access != GL_READ_ONLY_ARB) {
+ GLubyte *buf = (GLubyte *) bufObj->Pointer;
+ GLuint i;
+ /* check that last 100 bytes are still = magic value */
+ for (i = 0; i < 100; i++) {
+ GLuint pos = bufObj->Size - i - 1;
+ if (buf[pos] != 123) {
+ _mesa_warning(ctx, "Out of bounds buffer object write detected"
+ " at position %d (value = %u)\n",
+ pos, buf[pos]);
+ }
+ }
+ }
+#endif
+
+#ifdef VBO_DEBUG
+ if (bufObj->AccessFlags & GL_MAP_WRITE_BIT) {
+ GLuint i, unchanged = 0;
+ GLubyte *b = (GLubyte *) bufObj->Pointer;
+ GLint pos = -1;
+ /* check which bytes changed */
+ for (i = 0; i < bufObj->Size - 1; i++) {
+ if (b[i] == (i & 0xff) && b[i+1] == ((i+1) & 0xff)) {
+ unchanged++;
+ if (pos == -1)
+ pos = i;
+ }
+ }
+ if (unchanged) {
+ printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
+ bufObj->Name, unchanged, bufObj->Size, pos);
+ }
+ }
+#endif
+
+ status = ctx->Driver.UnmapBuffer( ctx, target, bufObj );
+ bufObj->AccessFlags = DEFAULT_ACCESS;
+ ASSERT(bufObj->Pointer == NULL);
+ ASSERT(bufObj->Offset == 0);
+ ASSERT(bufObj->Length == 0);
+
+ return status;
+}
+
+
+void GLAPIENTRY
+_mesa_GetBufferParameterivARB(GLenum target, GLenum pname, GLint *params)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_buffer_object *bufObj;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ bufObj = get_buffer(ctx, target);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameterivARB(target)" );
+ return;
+ }
+ if (!_mesa_is_bufferobj(bufObj)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetBufferParameterivARB" );
+ return;
+ }
+
+ switch (pname) {
+ case GL_BUFFER_SIZE_ARB:
+ *params = (GLint) bufObj->Size;
+ return;
+ case GL_BUFFER_USAGE_ARB:
+ *params = bufObj->Usage;
+ return;
+ case GL_BUFFER_ACCESS_ARB:
+ *params = simplified_access_mode(bufObj->AccessFlags);
+ return;
+ case GL_BUFFER_MAPPED_ARB:
+ *params = _mesa_bufferobj_mapped(bufObj);
+ return;
+ case GL_BUFFER_ACCESS_FLAGS:
+ if (ctx->VersionMajor < 3)
+ goto invalid_pname;
+ *params = bufObj->AccessFlags;
+ return;
+ case GL_BUFFER_MAP_OFFSET:
+ if (ctx->VersionMajor < 3)
+ goto invalid_pname;
+ *params = (GLint) bufObj->Offset;
+ return;
+ case GL_BUFFER_MAP_LENGTH:
+ if (ctx->VersionMajor < 3)
+ goto invalid_pname;
+ *params = (GLint) bufObj->Length;
+ return;
+ default:
+ ; /* fall-through */
+ }
+
+invalid_pname:
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameterivARB(pname=%s)",
+ _mesa_lookup_enum_by_nr(pname));
+}
+
+
+/**
+ * New in GL 3.2
+ * This is pretty much a duplicate of GetBufferParameteriv() but the
+ * GL_BUFFER_SIZE_ARB attribute will be 64-bits on a 64-bit system.
+ */
+void GLAPIENTRY
+_mesa_GetBufferParameteri64v(GLenum target, GLenum pname, GLint64 *params)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_buffer_object *bufObj;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ bufObj = get_buffer(ctx, target);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameteri64v(target)" );
+ return;
+ }
+ if (!_mesa_is_bufferobj(bufObj)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetBufferParameteri64v" );
+ return;
+ }
+
+ switch (pname) {
+ case GL_BUFFER_SIZE_ARB:
+ *params = bufObj->Size;
+ return;
+ case GL_BUFFER_USAGE_ARB:
+ *params = bufObj->Usage;
+ return;
+ case GL_BUFFER_ACCESS_ARB:
+ *params = simplified_access_mode(bufObj->AccessFlags);
+ return;
+ case GL_BUFFER_ACCESS_FLAGS:
+ if (ctx->VersionMajor < 3)
+ goto invalid_pname;
+ *params = bufObj->AccessFlags;
+ return;
+ case GL_BUFFER_MAPPED_ARB:
+ *params = _mesa_bufferobj_mapped(bufObj);
+ return;
+ case GL_BUFFER_MAP_OFFSET:
+ if (ctx->VersionMajor < 3)
+ goto invalid_pname;
+ *params = bufObj->Offset;
+ return;
+ case GL_BUFFER_MAP_LENGTH:
+ if (ctx->VersionMajor < 3)
+ goto invalid_pname;
+ *params = bufObj->Length;
+ return;
+ default:
+ ; /* fall-through */
+ }
+
+invalid_pname:
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameteri64v(pname=%s)",
+ _mesa_lookup_enum_by_nr(pname));
+}
+
+
+void GLAPIENTRY
+_mesa_GetBufferPointervARB(GLenum target, GLenum pname, GLvoid **params)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_buffer_object * bufObj;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (pname != GL_BUFFER_MAP_POINTER_ARB) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferPointervARB(pname)");
+ return;
+ }
+
+ bufObj = get_buffer(ctx, target);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferPointervARB(target)" );
+ return;
+ }
+ if (!_mesa_is_bufferobj(bufObj)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetBufferPointervARB" );
+ return;
+ }
+
+ *params = bufObj->Pointer;
+}
+
+
+void GLAPIENTRY
+_mesa_CopyBufferSubData(GLenum readTarget, GLenum writeTarget,
+ GLintptr readOffset, GLintptr writeOffset,
+ GLsizeiptr size)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_buffer_object *src, *dst;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ src = get_buffer(ctx, readTarget);
+ if (!src || !_mesa_is_bufferobj(src)) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glCopyBuffserSubData(readTarget = 0x%x)", readTarget);
+ return;
+ }
+
+ dst = get_buffer(ctx, writeTarget);
+ if (!dst || !_mesa_is_bufferobj(dst)) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glCopyBuffserSubData(writeTarget = 0x%x)", writeTarget);
+ return;
+ }
+
+ if (_mesa_bufferobj_mapped(src)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glCopyBuffserSubData(readBuffer is mapped)");
+ return;
+ }
+
+ if (_mesa_bufferobj_mapped(dst)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glCopyBuffserSubData(writeBuffer is mapped)");
+ return;
+ }
+
+ if (readOffset < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyBuffserSubData(readOffset = %d)", (int) readOffset);
+ return;
+ }
+
+ if (writeOffset < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyBuffserSubData(writeOffset = %d)", (int) writeOffset);
+ return;
+ }
+
+ if (readOffset + size > src->Size) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyBuffserSubData(readOffset + size = %d)",
+ (int) (readOffset + size));
+ return;
+ }
+
+ if (writeOffset + size > dst->Size) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyBuffserSubData(writeOffset + size = %d)",
+ (int) (writeOffset + size));
+ return;
+ }
+
+ if (src == dst) {
+ if (readOffset + size <= writeOffset) {
+ /* OK */
+ }
+ else if (writeOffset + size <= readOffset) {
+ /* OK */
+ }
+ else {
+ /* overlapping src/dst is illegal */
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyBuffserSubData(overlapping src/dst)");
+ return;
+ }
+ }
+
+ ctx->Driver.CopyBufferSubData(ctx, src, dst, readOffset, writeOffset, size);
+}
+
+
+/**
+ * See GL_ARB_map_buffer_range spec
+ */
+void * GLAPIENTRY
+_mesa_MapBufferRange(GLenum target, GLintptr offset, GLsizeiptr length,
+ GLbitfield access)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_buffer_object *bufObj;
+ void *map;
+
+ ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
+
+ if (!ctx->Extensions.ARB_map_buffer_range) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glMapBufferRange(extension not supported)");
+ return NULL;
+ }
+
+ if (offset < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glMapBufferRange(offset = %ld)", (long)offset);
+ return NULL;
+ }
+
+ if (length < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glMapBufferRange(length = %ld)", (long)length);
+ return NULL;
+ }
+
+ if ((access & (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)) == 0) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glMapBufferRange(access indicates neither read or write)");
+ return NULL;
+ }
+
+ if (access & GL_MAP_READ_BIT) {
+ if ((access & GL_MAP_INVALIDATE_RANGE_BIT) ||
+ (access & GL_MAP_INVALIDATE_BUFFER_BIT) ||
+ (access & GL_MAP_UNSYNCHRONIZED_BIT)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glMapBufferRange(invalid access flags)");
+ return NULL;
+ }
+ }
+
+ if ((access & GL_MAP_FLUSH_EXPLICIT_BIT) &&
+ ((access & GL_MAP_WRITE_BIT) == 0)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glMapBufferRange(invalid access flags)");
+ return NULL;
+ }
+
+ bufObj = get_buffer(ctx, target);
+ if (!bufObj || !_mesa_is_bufferobj(bufObj)) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glMapBufferRange(target = 0x%x)", target);
+ return NULL;
+ }
+
+ if (offset + length > bufObj->Size) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glMapBufferRange(offset + length > size)");
+ return NULL;
+ }
+
+ if (_mesa_bufferobj_mapped(bufObj)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glMapBufferRange(buffer already mapped)");
+ return NULL;
+ }
+
+ ASSERT(ctx->Driver.MapBufferRange);
+ map = ctx->Driver.MapBufferRange(ctx, target, offset, length,
+ access, bufObj);
+ if (!map) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glMapBufferARB(map failed)");
+ }
+ else {
+ /* The driver callback should have set all these fields.
+ * This is important because other modules (like VBO) might call
+ * the driver function directly.
+ */
+ ASSERT(bufObj->Pointer == map);
+ ASSERT(bufObj->Length == length);
+ ASSERT(bufObj->Offset == offset);
+ ASSERT(bufObj->AccessFlags == access);
+ }
+
+ return map;
+}
+
+
+/**
+ * See GL_ARB_map_buffer_range spec
+ */
+void GLAPIENTRY
+_mesa_FlushMappedBufferRange(GLenum target, GLintptr offset, GLsizeiptr length)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_buffer_object *bufObj;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (!ctx->Extensions.ARB_map_buffer_range) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glMapBufferRange(extension not supported)");
+ return;
+ }
+
+ if (offset < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glMapBufferRange(offset = %ld)", (long)offset);
+ return;
+ }
+
+ if (length < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glMapBufferRange(length = %ld)", (long)length);
+ return;
+ }
+
+ bufObj = get_buffer(ctx, target);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glMapBufferRange(target = 0x%x)", target);
+ return;
+ }
+
+ if (!_mesa_is_bufferobj(bufObj)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glMapBufferRange(current buffer is 0)");
+ return;
+ }
+
+ if (!_mesa_bufferobj_mapped(bufObj)) {
+ /* buffer is not mapped */
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glMapBufferRange(buffer is not mapped)");
+ return;
+ }
+
+ if ((bufObj->AccessFlags & GL_MAP_FLUSH_EXPLICIT_BIT) == 0) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glMapBufferRange(GL_MAP_FLUSH_EXPLICIT_BIT not set)");
+ return;
+ }
+
+ if (offset + length > bufObj->Length) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glMapBufferRange(offset %ld + length %ld > mapped length %ld)",
+ (long)offset, (long)length, (long)bufObj->Length);
+ return;
+ }
+
+ ASSERT(bufObj->AccessFlags & GL_MAP_WRITE_BIT);
+
+ if (ctx->Driver.FlushMappedBufferRange)
+ ctx->Driver.FlushMappedBufferRange(ctx, target, offset, length, bufObj);
+}
+
+
+#if FEATURE_APPLE_object_purgeable
+static GLenum
+_mesa_BufferObjectPurgeable(struct gl_context *ctx, GLuint name, GLenum option)
+{
+ struct gl_buffer_object *bufObj;
+ GLenum retval;
+
+ bufObj = _mesa_lookup_bufferobj(ctx, name);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glObjectPurgeable(name = 0x%x)", name);
+ return 0;
+ }
+ if (!_mesa_is_bufferobj(bufObj)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glObjectPurgeable(buffer 0)" );
+ return 0;
+ }
+
+ if (bufObj->Purgeable) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glObjectPurgeable(name = 0x%x) is already purgeable", name);
+ return GL_VOLATILE_APPLE;
+ }
+
+ bufObj->Purgeable = GL_TRUE;
+
+ retval = GL_VOLATILE_APPLE;
+ if (ctx->Driver.BufferObjectPurgeable)
+ retval = ctx->Driver.BufferObjectPurgeable(ctx, bufObj, option);
+
+ return retval;
+}
+
+
+static GLenum
+_mesa_RenderObjectPurgeable(struct gl_context *ctx, GLuint name, GLenum option)
+{
+ struct gl_renderbuffer *bufObj;
+ GLenum retval;
+
+ bufObj = _mesa_lookup_renderbuffer(ctx, name);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glObjectUnpurgeable(name = 0x%x)", name);
+ return 0;
+ }
+
+ if (bufObj->Purgeable) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glObjectPurgeable(name = 0x%x) is already purgeable", name);
+ return GL_VOLATILE_APPLE;
+ }
+
+ bufObj->Purgeable = GL_TRUE;
+
+ retval = GL_VOLATILE_APPLE;
+ if (ctx->Driver.RenderObjectPurgeable)
+ retval = ctx->Driver.RenderObjectPurgeable(ctx, bufObj, option);
+
+ return retval;
+}
+
+
+static GLenum
+_mesa_TextureObjectPurgeable(struct gl_context *ctx, GLuint name, GLenum option)
+{
+ struct gl_texture_object *bufObj;
+ GLenum retval;
+
+ bufObj = _mesa_lookup_texture(ctx, name);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glObjectPurgeable(name = 0x%x)", name);
+ return 0;
+ }
+
+ if (bufObj->Purgeable) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glObjectPurgeable(name = 0x%x) is already purgeable", name);
+ return GL_VOLATILE_APPLE;
+ }
+
+ bufObj->Purgeable = GL_TRUE;
+
+ retval = GL_VOLATILE_APPLE;
+ if (ctx->Driver.TextureObjectPurgeable)
+ retval = ctx->Driver.TextureObjectPurgeable(ctx, bufObj, option);
+
+ return retval;
+}
+
+
+GLenum GLAPIENTRY
+_mesa_ObjectPurgeableAPPLE(GLenum objectType, GLuint name, GLenum option)
+{
+ GLenum retval;
+
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
+
+ if (name == 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glObjectPurgeable(name = 0x%x)", name);
+ return 0;
+ }
+
+ switch (option) {
+ case GL_VOLATILE_APPLE:
+ case GL_RELEASED_APPLE:
+ /* legal */
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glObjectPurgeable(name = 0x%x) invalid option: %d",
+ name, option);
+ return 0;
+ }
+
+ switch (objectType) {
+ case GL_TEXTURE:
+ retval = _mesa_TextureObjectPurgeable (ctx, name, option);
+ break;
+ case GL_RENDERBUFFER_EXT:
+ retval = _mesa_RenderObjectPurgeable (ctx, name, option);
+ break;
+ case GL_BUFFER_OBJECT_APPLE:
+ retval = _mesa_BufferObjectPurgeable (ctx, name, option);
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glObjectPurgeable(name = 0x%x) invalid type: %d",
+ name, objectType);
+ return 0;
+ }
+
+ /* In strict conformance to the spec, we must only return VOLATILE when
+ * when passed the VOLATILE option. Madness.
+ *
+ * XXX First fix the spec, then fix me.
+ */
+ return option == GL_VOLATILE_APPLE ? GL_VOLATILE_APPLE : retval;
+}
+
+
+static GLenum
+_mesa_BufferObjectUnpurgeable(struct gl_context *ctx, GLuint name, GLenum option)
+{
+ struct gl_buffer_object *bufObj;
+ GLenum retval;
+
+ bufObj = _mesa_lookup_bufferobj(ctx, name);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glObjectUnpurgeable(name = 0x%x)", name);
+ return 0;
+ }
+
+ if (! bufObj->Purgeable) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glObjectUnpurgeable(name = 0x%x) object is "
+ " already \"unpurged\"", name);
+ return 0;
+ }
+
+ bufObj->Purgeable = GL_FALSE;
+
+ retval = option;
+ if (ctx->Driver.BufferObjectUnpurgeable)
+ retval = ctx->Driver.BufferObjectUnpurgeable(ctx, bufObj, option);
+
+ return retval;
+}
+
+
+static GLenum
+_mesa_RenderObjectUnpurgeable(struct gl_context *ctx, GLuint name, GLenum option)
+{
+ struct gl_renderbuffer *bufObj;
+ GLenum retval;
+
+ bufObj = _mesa_lookup_renderbuffer(ctx, name);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glObjectUnpurgeable(name = 0x%x)", name);
+ return 0;
+ }
+
+ if (! bufObj->Purgeable) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glObjectUnpurgeable(name = 0x%x) object is "
+ " already \"unpurged\"", name);
+ return 0;
+ }
+
+ bufObj->Purgeable = GL_FALSE;
+
+ retval = option;
+ if (ctx->Driver.RenderObjectUnpurgeable)
+ retval = ctx->Driver.RenderObjectUnpurgeable(ctx, bufObj, option);
+
+ return retval;
+}
+
+
+static GLenum
+_mesa_TextureObjectUnpurgeable(struct gl_context *ctx, GLuint name, GLenum option)
+{
+ struct gl_texture_object *bufObj;
+ GLenum retval;
+
+ bufObj = _mesa_lookup_texture(ctx, name);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glObjectUnpurgeable(name = 0x%x)", name);
+ return 0;
+ }
+
+ if (! bufObj->Purgeable) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glObjectUnpurgeable(name = 0x%x) object is"
+ " already \"unpurged\"", name);
+ return 0;
+ }
+
+ bufObj->Purgeable = GL_FALSE;
+
+ retval = option;
+ if (ctx->Driver.TextureObjectUnpurgeable)
+ retval = ctx->Driver.TextureObjectUnpurgeable(ctx, bufObj, option);
+
+ return retval;
+}
+
+
+GLenum GLAPIENTRY
+_mesa_ObjectUnpurgeableAPPLE(GLenum objectType, GLuint name, GLenum option)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
+
+ if (name == 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glObjectUnpurgeable(name = 0x%x)", name);
+ return 0;
+ }
+
+ switch (option) {
+ case GL_RETAINED_APPLE:
+ case GL_UNDEFINED_APPLE:
+ /* legal */
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
+ name, option);
+ return 0;
+ }
+
+ switch (objectType) {
+ case GL_BUFFER_OBJECT_APPLE:
+ return _mesa_BufferObjectUnpurgeable(ctx, name, option);
+ case GL_TEXTURE:
+ return _mesa_TextureObjectUnpurgeable(ctx, name, option);
+ case GL_RENDERBUFFER_EXT:
+ return _mesa_RenderObjectUnpurgeable(ctx, name, option);
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
+ name, objectType);
+ return 0;
+ }
+}
+
+
+static void
+_mesa_GetBufferObjectParameterivAPPLE(struct gl_context *ctx, GLuint name,
+ GLenum pname, GLint* params)
+{
+ struct gl_buffer_object *bufObj;
+
+ bufObj = _mesa_lookup_bufferobj(ctx, name);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glGetObjectParameteriv(name = 0x%x) invalid object", name);
+ return;
+ }
+
+ switch (pname) {
+ case GL_PURGEABLE_APPLE:
+ *params = bufObj->Purgeable;
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
+ name, pname);
+ break;
+ }
+}
+
+
+static void
+_mesa_GetRenderObjectParameterivAPPLE(struct gl_context *ctx, GLuint name,
+ GLenum pname, GLint* params)
+{
+ struct gl_renderbuffer *bufObj;
+
+ bufObj = _mesa_lookup_renderbuffer(ctx, name);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glObjectUnpurgeable(name = 0x%x)", name);
+ return;
+ }
+
+ switch (pname) {
+ case GL_PURGEABLE_APPLE:
+ *params = bufObj->Purgeable;
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
+ name, pname);
+ break;
+ }
+}
+
+
+static void
+_mesa_GetTextureObjectParameterivAPPLE(struct gl_context *ctx, GLuint name,
+ GLenum pname, GLint* params)
+{
+ struct gl_texture_object *bufObj;
+
+ bufObj = _mesa_lookup_texture(ctx, name);
+ if (!bufObj) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glObjectUnpurgeable(name = 0x%x)", name);
+ return;
+ }
+
+ switch (pname) {
+ case GL_PURGEABLE_APPLE:
+ *params = bufObj->Purgeable;
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
+ name, pname);
+ break;
+ }
+}
+
+
+void GLAPIENTRY
+_mesa_GetObjectParameterivAPPLE(GLenum objectType, GLuint name, GLenum pname,
+ GLint* params)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (name == 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glGetObjectParameteriv(name = 0x%x)", name);
+ return;
+ }
+
+ switch (objectType) {
+ case GL_TEXTURE:
+ _mesa_GetTextureObjectParameterivAPPLE (ctx, name, pname, params);
+ break;
+ case GL_BUFFER_OBJECT_APPLE:
+ _mesa_GetBufferObjectParameterivAPPLE (ctx, name, pname, params);
+ break;
+ case GL_RENDERBUFFER_EXT:
+ _mesa_GetRenderObjectParameterivAPPLE (ctx, name, pname, params);
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
+ name, objectType);
+ }
+}
+
+#endif /* FEATURE_APPLE_object_purgeable */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 18:46:35 +0000