diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/main/bufferobj.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/main/bufferobj.c | 940 |
1 files changed, 0 insertions, 940 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/main/bufferobj.c b/nx-X11/extras/Mesa/src/mesa/main/bufferobj.c deleted file mode 100644 index a1d4c0190..000000000 --- a/nx-X11/extras/Mesa/src/mesa/main/bufferobj.c +++ /dev/null @@ -1,940 +0,0 @@ -/* - * Mesa 3-D graphics library - * Version: 6.3 - * - * Copyright (C) 1999-2004 Brian Paul 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_buffer_object extension. - * \author Brian Paul, Ian Romanick - */ - - -#include "glheader.h" -#include "hash.h" -#include "imports.h" -#include "image.h" -#include "context.h" -#include "bufferobj.h" - - -/** - * Get the buffer object bound to the specified target in a GL context. - * - * \param ctx GL context - * \param target Buffer object target to be retrieved. Currently this must - * be either \c GL_ARRAY_BUFFER or \c GL_ELEMENT_ARRAY_BUFFER. - * \param str Name of caller for logging errors. - * \return A pointer to the buffer object bound to \c target in the - * specified context or \c NULL if \c target is invalid or no - * buffer object is bound. - */ -static INLINE struct gl_buffer_object * -buffer_object_get_target( GLcontext *ctx, GLenum target, const char * str ) -{ - struct gl_buffer_object * bufObj = NULL; - - switch (target) { - case GL_ARRAY_BUFFER_ARB: - bufObj = ctx->Array.ArrayBufferObj; - break; - case GL_ELEMENT_ARRAY_BUFFER_ARB: - bufObj = ctx->Array.ElementArrayBufferObj; - break; - case GL_PIXEL_PACK_BUFFER_EXT: - bufObj = ctx->Pack.BufferObj; - break; - case GL_PIXEL_UNPACK_BUFFER_EXT: - bufObj = ctx->Unpack.BufferObj; - break; - default: - _mesa_error(ctx, GL_INVALID_ENUM, "gl%s(target)", str); - return NULL; - } - - if (bufObj->Name == 0) - return NULL; - - return bufObj; -} - - -/** - * 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 str Name of caller for logging 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( GLcontext * ctx, GLenum target, - GLintptrARB offset, GLsizeiptrARB size, - const char * str ) -{ - struct gl_buffer_object *bufObj; - - if (size < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, "%s(size < 0)", str); - return NULL; - } - - if (offset < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, "%s(offset < 0)", str); - return NULL; - } - - bufObj = buffer_object_get_target( ctx, target, str ); - if (!bufObj || bufObj->Name == 0) { - return NULL; - } - - if ((GLuint) (offset + size) > bufObj->Size) { - _mesa_error(ctx, GL_INVALID_VALUE, - "%s(size + offset > buffer size)", str); - return NULL; - } - - if (bufObj->Pointer) { - /* Buffer is currently mapped */ - _mesa_error(ctx, GL_INVALID_OPERATION, "%s", str); - return NULL; - } - - return bufObj; -} - - -/** - * Allocate and initialize a new buffer object. - * - * This function is intended to be called via - * \c dd_function_table::NewBufferObject. - */ -struct gl_buffer_object * -_mesa_new_buffer_object( GLcontext *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. - * - * This function is intended to be called via - * \c dd_function_table::DeleteBuffer. - */ -void -_mesa_delete_buffer_object( GLcontext *ctx, struct gl_buffer_object *bufObj ) -{ - (void) ctx; - - if (bufObj->Data) - _mesa_free(bufObj->Data); - _mesa_free(bufObj); -} - - -/** - * Initialize a buffer object to default values. - */ -void -_mesa_initialize_buffer_object( struct gl_buffer_object *obj, - GLuint name, GLenum target ) -{ - (void) target; - - _mesa_bzero(obj, sizeof(struct gl_buffer_object)); - obj->RefCount = 1; - obj->Name = name; - obj->Usage = GL_STATIC_DRAW_ARB; - obj->Access = GL_READ_WRITE_ARB; -} - - -/** - * Add the given buffer object to the buffer object pool. - */ -void -_mesa_save_buffer_object( GLcontext *ctx, struct gl_buffer_object *obj ) -{ - if (obj->Name > 0) { - /* insert into hash table */ - _mesa_HashInsert(ctx->Shared->BufferObjects, obj->Name, obj); - } -} - - -/** - * Remove the given buffer object from the buffer object pool. - * Do not deallocate the buffer object though. - */ -void -_mesa_remove_buffer_object( GLcontext *ctx, struct gl_buffer_object *bufObj ) -{ - if (bufObj->Name > 0) { - /* remove from hash table */ - _mesa_HashRemove(ctx->Shared->BufferObjects, bufObj->Name); - } -} - - -/** - * 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 function is intended to be called via - * \c dd_function_table::BufferData. This function need not set GL error - * codes. The input parameters will have been tested before calling. - * - * \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. - * - * \sa glBufferDataARB, dd_function_table::BufferData. - */ -void -_mesa_buffer_data( GLcontext *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) { - _mesa_memcpy( bufObj->Data, data, size ); - } - } -} - - -/** - * 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 function is intended to be called by - * \c dd_function_table::BufferSubData. This function need not set GL error - * codes. The input parameters will have been tested before calling. - * - * \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. - */ -void -_mesa_buffer_subdata( GLcontext *ctx, GLenum target, GLintptrARB offset, - GLsizeiptrARB size, const GLvoid * data, - struct gl_buffer_object * bufObj ) -{ - (void) ctx; (void) target; - - if (bufObj->Data && ((GLuint) (size + offset) <= bufObj->Size)) { - _mesa_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 function is intended to be called by - * \c dd_function_table::BufferGetSubData. This function need not set GL error - * codes. The input parameters will have been tested before calling. - * - * \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 glBufferGetSubDataARB, dd_function_table::GetBufferSubData. - */ -void -_mesa_buffer_get_subdata( GLcontext *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)) { - _mesa_memcpy( data, (GLubyte *) bufObj->Data + offset, size ); - } -} - - -/** - * Fallback function called via ctx->Driver.MapBuffer(). - * Hardware drivers that really implement buffer objects should never use - * function. - * - * The input 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 - */ -void * -_mesa_buffer_map( GLcontext *ctx, GLenum target, GLenum access, - struct gl_buffer_object *bufObj ) -{ - (void) ctx; - (void) target; - (void) access; - ASSERT(!bufObj->OnCard); - /* Just return a direct pointer to the data */ - if (bufObj->Pointer) { - /* already mapped! */ - return NULL; - } - bufObj->Pointer = bufObj->Data; - return bufObj->Pointer; -} - - -/** - * Fallback function called via ctx->Driver.MapBuffer(). - * Hardware drivers that really implement buffer objects should never use - * function. - * - * The input parameters will have been already tested for errors. - * - * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer - */ -GLboolean -_mesa_buffer_unmap( GLcontext *ctx, GLenum target, - struct gl_buffer_object *bufObj ) -{ - (void) ctx; - (void) target; - ASSERT(!bufObj->OnCard); - /* XXX we might assert here that bufObj->Pointer is non-null */ - bufObj->Pointer = NULL; - return GL_TRUE; -} - - -/** - * Initialize the state associated with buffer objects - */ -void -_mesa_init_buffer_objects( GLcontext *ctx ) -{ - GLuint i; - - /* Allocate the default buffer object and set refcount so high that - * it never gets deleted. - */ - ctx->Array.NullBufferObj = _mesa_new_buffer_object(ctx, 0, 0); - if (ctx->Array.NullBufferObj) - ctx->Array.NullBufferObj->RefCount = 1000; - - ctx->Array.ArrayBufferObj = ctx->Array.NullBufferObj; - ctx->Array.ElementArrayBufferObj = ctx->Array.NullBufferObj; - - /* Vertex array buffers */ - ctx->Array.Vertex.BufferObj = ctx->Array.NullBufferObj; - ctx->Array.Normal.BufferObj = ctx->Array.NullBufferObj; - ctx->Array.Color.BufferObj = ctx->Array.NullBufferObj; - ctx->Array.SecondaryColor.BufferObj = ctx->Array.NullBufferObj; - ctx->Array.FogCoord.BufferObj = ctx->Array.NullBufferObj; - ctx->Array.Index.BufferObj = ctx->Array.NullBufferObj; - for (i = 0; i < MAX_TEXTURE_UNITS; i++) { - ctx->Array.TexCoord[i].BufferObj = ctx->Array.NullBufferObj; - } - ctx->Array.EdgeFlag.BufferObj = ctx->Array.NullBufferObj; - for (i = 0; i < VERT_ATTRIB_MAX; i++) { - ctx->Array.VertexAttrib[i].BufferObj = ctx->Array.NullBufferObj; - } -} - - -/** - * 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! - * - * \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; - - ASSERT(pack->BufferObj->Name != 0); - - 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); - - - if ((const GLubyte *) start > (const GLubyte *)(uintptr_t) pack->BufferObj->Size) { - /* This will catch negative values / wrap-around */ - return GL_FALSE; - } - if ((const GLubyte *) end > (const GLubyte *)(uintptr_t) pack->BufferObj->Size) { - /* Image read goes beyond end of buffer */ - return GL_FALSE; - } - - /* OK! */ - return GL_TRUE; -} - - - - -/**********************************************************************/ -/* API Functions */ -/**********************************************************************/ - -void GLAPIENTRY -_mesa_BindBufferARB(GLenum target, GLuint buffer) -{ - GET_CURRENT_CONTEXT(ctx); - struct gl_buffer_object *oldBufObj; - struct gl_buffer_object *newBufObj = NULL; - ASSERT_OUTSIDE_BEGIN_END(ctx); - - oldBufObj = buffer_object_get_target( ctx, target, "BindBufferARB" ); - 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->Array.NullBufferObj; - } - else { - /* non-default buffer object */ - const struct _mesa_HashTable *hash = ctx->Shared->BufferObjects; - newBufObj = (struct gl_buffer_object *) _mesa_HashLookup(hash, buffer); - if (!newBufObj) { - /* if this is a new buffer object id, allocate a buffer object now */ - newBufObj = (*ctx->Driver.NewBufferObject)(ctx, buffer, target); - if (!newBufObj) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindBufferARB"); - return; - } - _mesa_save_buffer_object(ctx, newBufObj); - } - newBufObj->RefCount++; - } - - switch (target) { - case GL_ARRAY_BUFFER_ARB: - ctx->Array.ArrayBufferObj = newBufObj; - break; - case GL_ELEMENT_ARRAY_BUFFER_ARB: - ctx->Array.ElementArrayBufferObj = newBufObj; - break; - case GL_PIXEL_PACK_BUFFER_EXT: - ctx->Pack.BufferObj = newBufObj; - break; - case GL_PIXEL_UNPACK_BUFFER_EXT: - ctx->Unpack.BufferObj = newBufObj; - break; - default: - _mesa_problem(ctx, "Bad target in _mesa_BindBufferARB"); - return; - } - - /* Pass BindBuffer call to device driver */ - if (ctx->Driver.BindBuffer && newBufObj) - (*ctx->Driver.BindBuffer)( ctx, target, newBufObj ); - - if (oldBufObj) { - oldBufObj->RefCount--; - assert(oldBufObj->RefCount >= 0); - if (oldBufObj->RefCount == 0) { - assert(oldBufObj->Name != 0); - ASSERT(ctx->Driver.DeleteBuffer); - ctx->Driver.DeleteBuffer( ctx, oldBufObj ); - } - } -} - - -/** - * 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++) { - if (ids[i] != 0) { - struct gl_buffer_object *bufObj = (struct gl_buffer_object *) - _mesa_HashLookup(ctx->Shared->BufferObjects, ids[i]); - if (bufObj) { - /* unbind any vertex pointers bound to this buffer */ - GLuint j; - - ASSERT(bufObj->Name == ids[i]); - - if (ctx->Array.Vertex.BufferObj == bufObj) { - bufObj->RefCount--; - ctx->Array.Vertex.BufferObj = ctx->Array.NullBufferObj; - ctx->Array.NullBufferObj->RefCount++; - } - if (ctx->Array.Normal.BufferObj == bufObj) { - bufObj->RefCount--; - ctx->Array.Normal.BufferObj = ctx->Array.NullBufferObj; - ctx->Array.NullBufferObj->RefCount++; - } - if (ctx->Array.Color.BufferObj == bufObj) { - bufObj->RefCount--; - ctx->Array.Color.BufferObj = ctx->Array.NullBufferObj; - ctx->Array.NullBufferObj->RefCount++; - } - if (ctx->Array.SecondaryColor.BufferObj == bufObj) { - bufObj->RefCount--; - ctx->Array.SecondaryColor.BufferObj = ctx->Array.NullBufferObj; - ctx->Array.NullBufferObj->RefCount++; - } - if (ctx->Array.FogCoord.BufferObj == bufObj) { - bufObj->RefCount--; - ctx->Array.FogCoord.BufferObj = ctx->Array.NullBufferObj; - ctx->Array.NullBufferObj->RefCount++; - } - if (ctx->Array.Index.BufferObj == bufObj) { - bufObj->RefCount--; - ctx->Array.Index.BufferObj = ctx->Array.NullBufferObj; - ctx->Array.NullBufferObj->RefCount++; - } - if (ctx->Array.EdgeFlag.BufferObj == bufObj) { - bufObj->RefCount--; - ctx->Array.EdgeFlag.BufferObj = ctx->Array.NullBufferObj; - ctx->Array.NullBufferObj->RefCount++; - } - for (j = 0; j < MAX_TEXTURE_UNITS; j++) { - if (ctx->Array.TexCoord[j].BufferObj == bufObj) { - bufObj->RefCount--; - ctx->Array.TexCoord[j].BufferObj = ctx->Array.NullBufferObj; - ctx->Array.NullBufferObj->RefCount++; - } - } - for (j = 0; j < VERT_ATTRIB_MAX; j++) { - if (ctx->Array.VertexAttrib[j].BufferObj == bufObj) { - bufObj->RefCount--; - ctx->Array.VertexAttrib[j].BufferObj = ctx->Array.NullBufferObj; - ctx->Array.NullBufferObj->RefCount++; - } - } - - 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 ); - } - - 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_remove_buffer_object(ctx, bufObj); - bufObj->RefCount--; - if (bufObj->RefCount <= 0) { - ASSERT(ctx->Array.ArrayBufferObj != bufObj); - ASSERT(ctx->Array.ElementArrayBufferObj != bufObj); - ASSERT(ctx->Array.Vertex.BufferObj != bufObj); - ASSERT(ctx->Driver.DeleteBuffer); - ctx->Driver.DeleteBuffer(ctx, bufObj); - } - } - } - } - - _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); - - /* Allocate new, empty buffer objects and return identifiers */ - for (i = 0; i < n; i++) { - struct gl_buffer_object *bufObj; - GLuint name = first + i; - GLenum target = 0; - bufObj = (*ctx->Driver.NewBufferObject)( ctx, name, target ); - if (!bufObj) { - _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenBuffersARB"); - return; - } - _mesa_save_buffer_object(ctx, bufObj); - 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); - - if (id == 0) - return GL_FALSE; - - _glthread_LOCK_MUTEX(ctx->Shared->Mutex); - bufObj = (struct gl_buffer_object *) _mesa_HashLookup(ctx->Shared->BufferObjects, id); - _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); - - return bufObj ? GL_TRUE : GL_FALSE; -} - - -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 = buffer_object_get_target( ctx, target, "BufferDataARB" ); - if (!bufObj || bufObj->Name ==0) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glBufferDataARB" ); - return; - } - - if (bufObj->Pointer) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glBufferDataARB(buffer is mapped)" ); - return; - } - - ASSERT(ctx->Driver.BufferData); - - /* Give the buffer object to the driver! <data> may be null! */ - (*ctx->Driver.BufferData)( ctx, target, size, data, usage, bufObj ); -} - - -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, - "BufferSubDataARB" ); - if (!bufObj) { - /* error already recorded */ - return; - } - - 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, - "GetBufferSubDataARB" ); - 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; - ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL); - - switch (access) { - case GL_READ_ONLY_ARB: - case GL_WRITE_ONLY_ARB: - case GL_READ_WRITE_ARB: - /* OK */ - break; - default: - _mesa_error(ctx, GL_INVALID_ENUM, "glMapBufferARB(access)"); - return NULL; - } - - bufObj = buffer_object_get_target( ctx, target, "MapBufferARB" ); - if (!bufObj || bufObj->Name == 0) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glMapBufferARB" ); - return NULL; - } - - if (bufObj->Pointer) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glMapBufferARB(already mapped)"); - return NULL; - } - - ASSERT(ctx->Driver.MapBuffer); - bufObj->Pointer = (*ctx->Driver.MapBuffer)( ctx, target, access, bufObj ); - if (!bufObj->Pointer) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glMapBufferARB(access)"); - } - - bufObj->Access = access; - - 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 = buffer_object_get_target( ctx, target, "UnmapBufferARB" ); - if (!bufObj || bufObj->Name == 0) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glUnmapBufferARB" ); - return GL_FALSE; - } - - if (!bufObj->Pointer) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glUnmapBufferARB"); - return GL_FALSE; - } - - if (ctx->Driver.UnmapBuffer) { - status = (*ctx->Driver.UnmapBuffer)( ctx, target, bufObj ); - } - - bufObj->Access = GL_READ_WRITE_ARB; /* initial value, OK? */ - bufObj->Pointer = NULL; - - 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 = buffer_object_get_target( ctx, target, "GetBufferParameterivARB" ); - if (!bufObj || bufObj->Name == 0) { - _mesa_error(ctx, GL_INVALID_OPERATION, "GetBufferParameterivARB" ); - return; - } - - switch (pname) { - case GL_BUFFER_SIZE_ARB: - *params = (GLint) bufObj->Size; - break; - case GL_BUFFER_USAGE_ARB: - *params = bufObj->Usage; - break; - case GL_BUFFER_ACCESS_ARB: - *params = bufObj->Access; - break; - case GL_BUFFER_MAPPED_ARB: - *params = (bufObj->Pointer != NULL); - break; - default: - _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameterivARB(pname)"); - return; - } -} - - -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 = buffer_object_get_target( ctx, target, "GetBufferPointervARB" ); - if (!bufObj || bufObj->Name == 0) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glGetBufferPointervARB" ); - return; - } - - *params = bufObj->Pointer; -} |