diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/main/fbobject.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/main/fbobject.c | 1357 |
1 files changed, 1357 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/main/fbobject.c b/nx-X11/extras/Mesa/src/mesa/main/fbobject.c new file mode 100644 index 000000000..b16e13a22 --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/main/fbobject.c @@ -0,0 +1,1357 @@ +/* + * Mesa 3-D graphics library + * Version: 6.3 + * + * Copyright (C) 1999-2005 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. + */ + + +/* + * Authors: + * Brian Paul + */ + + +#include "context.h" +#include "fbobject.h" +#include "framebuffer.h" +#include "hash.h" +#include "renderbuffer.h" +#include "teximage.h" +#include "texstore.h" + + +/** + * Notes: + * + * None of the GL_EXT_framebuffer_object functions are compiled into + * display lists. + */ + + + +/* + * When glGenRender/FramebuffersEXT() is called we insert pointers to + * these placeholder objects into the hash table. + * Later, when the object ID is first bound, we replace the placeholder + * with the real frame/renderbuffer. + */ +static struct gl_framebuffer DummyFramebuffer; +static struct gl_renderbuffer DummyRenderbuffer; + + +#define IS_CUBE_FACE(TARGET) \ + ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \ + (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z) + + +/** + * Helper routine for getting a gl_renderbuffer. + */ +static struct gl_renderbuffer * +lookup_renderbuffer(GLcontext *ctx, GLuint id) +{ + struct gl_renderbuffer *rb; + + if (id == 0) + return NULL; + + rb = (struct gl_renderbuffer *) + _mesa_HashLookup(ctx->Shared->RenderBuffers, id); + return rb; +} + + +/** + * Helper routine for getting a gl_framebuffer. + */ +static struct gl_framebuffer * +lookup_framebuffer(GLcontext *ctx, GLuint id) +{ + struct gl_framebuffer *fb; + + if (id == 0) + return NULL; + + fb = (struct gl_framebuffer *) + _mesa_HashLookup(ctx->Shared->FrameBuffers, id); + return fb; +} + + +/** + * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding + * gl_renderbuffer_attachment object. + */ +static struct gl_renderbuffer_attachment * +get_attachment(GLcontext *ctx, struct gl_framebuffer *fb, GLenum attachment) +{ + GLuint i; + + switch (attachment) { + case GL_COLOR_ATTACHMENT0_EXT: + case GL_COLOR_ATTACHMENT1_EXT: + case GL_COLOR_ATTACHMENT2_EXT: + case GL_COLOR_ATTACHMENT3_EXT: + case GL_COLOR_ATTACHMENT4_EXT: + case GL_COLOR_ATTACHMENT5_EXT: + case GL_COLOR_ATTACHMENT6_EXT: + case GL_COLOR_ATTACHMENT7_EXT: + case GL_COLOR_ATTACHMENT8_EXT: + case GL_COLOR_ATTACHMENT9_EXT: + case GL_COLOR_ATTACHMENT10_EXT: + case GL_COLOR_ATTACHMENT11_EXT: + case GL_COLOR_ATTACHMENT12_EXT: + case GL_COLOR_ATTACHMENT13_EXT: + case GL_COLOR_ATTACHMENT14_EXT: + case GL_COLOR_ATTACHMENT15_EXT: + i = attachment - GL_COLOR_ATTACHMENT0_EXT; + if (i >= ctx->Const.MaxColorAttachments) { + return NULL; + } + return &fb->Attachment[BUFFER_COLOR0 + i]; + case GL_DEPTH_ATTACHMENT_EXT: + return &fb->Attachment[BUFFER_DEPTH]; + case GL_STENCIL_ATTACHMENT_EXT: + return &fb->Attachment[BUFFER_STENCIL]; + default: + return NULL; + } +} + + +/** + * Remove any texture or renderbuffer attached to the given attachment + * point. Update reference counts, etc. + */ +void +_mesa_remove_attachment(GLcontext *ctx, struct gl_renderbuffer_attachment *att) +{ + if (att->Type == GL_TEXTURE) { + ASSERT(att->Texture); + if (att->Renderbuffer) { + /* delete/remove the 'wrapper' renderbuffer */ + /* XXX do we really want to do this??? */ + att->Renderbuffer->Delete(att->Renderbuffer); + att->Renderbuffer = NULL; + } + att->Texture->RefCount--; + if (att->Texture->RefCount == 0) { + ctx->Driver.DeleteTexture(ctx, att->Texture); + } + att->Texture = NULL; + } + else if (att->Type == GL_RENDERBUFFER_EXT) { + ASSERT(att->Renderbuffer); + ASSERT(!att->Texture); + att->Renderbuffer->RefCount--; + if (att->Renderbuffer->RefCount == 0) { + att->Renderbuffer->Delete(att->Renderbuffer); + } + att->Renderbuffer = NULL; + } + att->Type = GL_NONE; + att->Complete = GL_TRUE; +} + + +/** + * Bind a texture object to an attachment point. + * The previous binding, if any, will be removed first. + */ +void +_mesa_set_texture_attachment(GLcontext *ctx, + struct gl_renderbuffer_attachment *att, + struct gl_texture_object *texObj, + GLenum texTarget, GLuint level, GLuint zoffset) +{ + _mesa_remove_attachment(ctx, att); + att->Type = GL_TEXTURE; + att->Texture = texObj; + att->TextureLevel = level; + if (IS_CUBE_FACE(texTarget)) { + att->CubeMapFace = texTarget - GL_TEXTURE_CUBE_MAP_POSITIVE_X; + } + else { + att->CubeMapFace = 0; + } + att->Zoffset = zoffset; + att->Complete = GL_FALSE; + + texObj->RefCount++; + + /* XXX when we attach to a texture, we should probably set the + * att->Renderbuffer pointer to a "wrapper renderbuffer" which + * makes the texture image look like renderbuffer. + */ +} + + +/** + * Bind a renderbuffer to an attachment point. + * The previous binding, if any, will be removed first. + */ +void +_mesa_set_renderbuffer_attachment(GLcontext *ctx, + struct gl_renderbuffer_attachment *att, + struct gl_renderbuffer *rb) +{ + _mesa_remove_attachment(ctx, att); + att->Type = GL_RENDERBUFFER_EXT; + att->Renderbuffer = rb; + att->Texture = NULL; /* just to be safe */ + att->Complete = GL_FALSE; + rb->RefCount++; +} + + +/** + * Fallback for ctx->Driver.FramebufferRenderbuffer() + * Sets a framebuffer attachment to a particular renderbuffer. + * The framebuffer in question is ctx->DrawBuffer. + * \sa _mesa_renderbuffer_texture + */ +void +_mesa_framebuffer_renderbuffer(GLcontext *ctx, + struct gl_renderbuffer_attachment *att, + struct gl_renderbuffer *rb) +{ + if (rb) { + _mesa_set_renderbuffer_attachment(ctx, att, rb); + } + else { + _mesa_remove_attachment(ctx, att); + } +} + + +/** + * Test if an attachment point is complete and update its Complete field. + * \param format if GL_COLOR, this is a color attachment point, + * if GL_DEPTH, this is a depth component attachment point, + * if GL_STENCIL, this is a stencil component attachment point. + */ +static void +test_attachment_completeness(const GLcontext *ctx, GLenum format, + struct gl_renderbuffer_attachment *att) +{ + assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL); + + /* assume complete */ + att->Complete = GL_TRUE; + + /* Look for reasons why the attachment might be incomplete */ + if (att->Type == GL_TEXTURE) { + const struct gl_texture_object *texObj = att->Texture; + struct gl_texture_image *texImage; + + if (!texObj) { + att->Complete = GL_FALSE; + return; + } + + texImage = texObj->Image[att->CubeMapFace][att->TextureLevel]; + if (!texImage) { + att->Complete = GL_FALSE; + return; + } + if (texImage->Width < 1 || texImage->Height < 1) { + att->Complete = GL_FALSE; + return; + } + if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) { + att->Complete = GL_FALSE; + return; + } + + if (format == GL_COLOR) { + if (texImage->TexFormat->BaseFormat != GL_RGB && + texImage->TexFormat->BaseFormat != GL_RGBA) { + att->Complete = GL_FALSE; + return; + } + } + else if (format == GL_DEPTH) { + if (texImage->TexFormat->BaseFormat != GL_DEPTH_COMPONENT) { + att->Complete = GL_FALSE; + return; + } + } + else { + /* no such thing as stencil textures */ + att->Complete = GL_FALSE; + return; + } + } + else if (att->Type == GL_RENDERBUFFER_EXT) { + if (att->Renderbuffer->Width < 1 || att->Renderbuffer->Height < 1) { + att->Complete = GL_FALSE; + return; + } + if (format == GL_COLOR) { + if (att->Renderbuffer->_BaseFormat != GL_RGB && + att->Renderbuffer->_BaseFormat != GL_RGBA) { + att->Complete = GL_FALSE; + return; + } + } + else if (format == GL_DEPTH) { + if (att->Renderbuffer->_BaseFormat != GL_DEPTH_COMPONENT) { + att->Complete = GL_FALSE; + return; + } + } + else { + assert(format == GL_STENCIL); + if (att->Renderbuffer->_BaseFormat != GL_STENCIL_INDEX) { + att->Complete = GL_FALSE; + return; + } + } + } + else { + ASSERT(att->Type == GL_NONE); + /* complete */ + return; + } +} + + +/** + * Test if the given framebuffer object is complete and update its + * Status field with the results. + * Also update the framebuffer's Width and Height fields if the + * framebuffer is complete. + */ +void +_mesa_test_framebuffer_completeness(GLcontext *ctx, struct gl_framebuffer *fb) +{ + GLuint numImages, width = 0, height = 0; + GLenum intFormat = GL_NONE; + GLuint w = 0, h = 0; + GLint i; + + assert(fb->Name != 0); + + numImages = 0; + fb->Width = 0; + fb->Height = 0; + + /* Start at -2 to more easily loop over all attachment points */ + for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) { + struct gl_renderbuffer_attachment *att; + GLenum f; + + if (i == -2) { + att = &fb->Attachment[BUFFER_DEPTH]; + test_attachment_completeness(ctx, GL_DEPTH, att); + if (!att->Complete) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT; + return; + } + } + else if (i == -1) { + att = &fb->Attachment[BUFFER_STENCIL]; + test_attachment_completeness(ctx, GL_STENCIL, att); + if (!att->Complete) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT; + return; + } + } + else { + att = &fb->Attachment[BUFFER_COLOR0 + i]; + test_attachment_completeness(ctx, GL_COLOR, att); + if (!att->Complete) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT; + return; + } + } + + if (att->Type == GL_TEXTURE) { + w = att->Texture->Image[att->CubeMapFace][att->TextureLevel]->Width; + h = att->Texture->Image[att->CubeMapFace][att->TextureLevel]->Height; + f = att->Texture->Image[att->CubeMapFace][att->TextureLevel]->Format; + numImages++; + if (f != GL_RGB && f != GL_RGBA && f != GL_DEPTH_COMPONENT) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT; + return; + } + } + else if (att->Type == GL_RENDERBUFFER_EXT) { + w = att->Renderbuffer->Width; + h = att->Renderbuffer->Height; + f = att->Renderbuffer->InternalFormat; + numImages++; + } + else { + assert(att->Type == GL_NONE); + continue; + } + + if (numImages == 1) { + /* set required width, height and format */ + width = w; + height = h; + if (i >= 0) + intFormat = f; + } + else { + /* check that width, height, format are same */ + if (w != width || h != height) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT; + return; + } + if (intFormat != GL_NONE && f != intFormat) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT; + return; + } + } + } + + /* Check that all DrawBuffers are present */ + for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { + if (fb->ColorDrawBuffer[i] != GL_NONE) { + const struct gl_renderbuffer_attachment *att + = get_attachment(ctx, fb, fb->ColorDrawBuffer[i]); + assert(att); + if (att->Type == GL_NONE) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT; + return; + } + } + } + + /* Check that the ReadBuffer is present */ + if (fb->ColorReadBuffer != GL_NONE) { + const struct gl_renderbuffer_attachment *att + = get_attachment(ctx, fb, fb->ColorReadBuffer); + assert(att); + if (att->Type == GL_NONE) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT; + return; + } + } + + /* Check if any renderbuffer is attached more than once */ + for (i = 0; i < BUFFER_COUNT - 1; i++) { + struct gl_renderbuffer *rb_i = fb->Attachment[i].Renderbuffer; + if (rb_i) { + GLint j; + for (j = i + 1; j < BUFFER_COUNT; j++) { + struct gl_renderbuffer *rb_j = fb->Attachment[j].Renderbuffer; + if (rb_i == rb_j) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DUPLICATE_ATTACHMENT_EXT; + return; + } + } + } + } + + + if (numImages == 0) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT; + return; + } + + /* + * If we get here, the framebuffer is complete! + */ + fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT; + fb->Width = w; + fb->Height = h; +} + + +GLboolean GLAPIENTRY +_mesa_IsRenderbufferEXT(GLuint renderbuffer) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); + if (renderbuffer) { + struct gl_renderbuffer *rb = lookup_renderbuffer(ctx, renderbuffer); + if (rb != NULL && rb != &DummyRenderbuffer) + return GL_TRUE; + } + return GL_FALSE; +} + + +void GLAPIENTRY +_mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer) +{ + struct gl_renderbuffer *newRb, *oldRb; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (target != GL_RENDERBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glBindRenderbufferEXT(target)"); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + if (renderbuffer) { + newRb = lookup_renderbuffer(ctx, renderbuffer); + if (newRb == &DummyRenderbuffer) { + /* ID was reserved, but no real renderbuffer object made yet */ + newRb = NULL; + } + if (!newRb) { + /* create new renderbuffer object */ + newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer); + if (!newRb) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT"); + return; + } + ASSERT(newRb->AllocStorage); + _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb); + } + newRb->RefCount++; + } + else { + newRb = NULL; + } + + oldRb = ctx->CurrentRenderbuffer; + if (oldRb) { + oldRb->RefCount--; + if (oldRb->RefCount == 0) { + oldRb->Delete(oldRb); + } + } + + ASSERT(newRb != &DummyRenderbuffer); + + ctx->CurrentRenderbuffer = newRb; +} + + +void GLAPIENTRY +_mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers) +{ + GLint i; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + for (i = 0; i < n; i++) { + if (renderbuffers[i] > 0) { + struct gl_renderbuffer *rb; + rb = lookup_renderbuffer(ctx, renderbuffers[i]); + if (rb) { + /* check if deleting currently bound renderbuffer object */ + if (rb == ctx->CurrentRenderbuffer) { + /* bind default */ + ASSERT(rb->RefCount >= 2); + _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0); + } + + /* remove from hash table immediately, to free the ID */ + _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]); + + if (rb != &DummyRenderbuffer) { + /* But the object will not be freed until it's no longer + * bound in any context. + */ + rb->RefCount--; + if (rb->RefCount == 0) { + rb->Delete(rb); + } + } + } + } + } +} + + +void GLAPIENTRY +_mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers) +{ + GET_CURRENT_CONTEXT(ctx); + GLuint first; + GLint i; + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (n < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)"); + return; + } + + if (!renderbuffers) + return; + + first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n); + + for (i = 0; i < n; i++) { + GLuint name = first + i; + renderbuffers[i] = name; + /* insert dummy placeholder into hash table */ + _glthread_LOCK_MUTEX(ctx->Shared->Mutex); + _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer); + _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); + } +} + + +/** + * Given an internal format token for a render buffer, return the + * corresponding base format. + * \return one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX, GL_DEPTH_COMPONENT + * or zero if error. + */ +static GLenum +base_internal_format(GLcontext *ctx, GLenum internalFormat) +{ + switch (internalFormat) { + case GL_RGB: + case GL_R3_G3_B2: + case GL_RGB4: + case GL_RGB5: + case GL_RGB8: + case GL_RGB10: + case GL_RGB12: + case GL_RGB16: + return GL_RGB; + case GL_RGBA: + case GL_RGBA2: + case GL_RGBA4: + case GL_RGB5_A1: + case GL_RGBA8: + case GL_RGB10_A2: + case GL_RGBA12: + case GL_RGBA16: + return GL_RGBA; + case GL_STENCIL_INDEX: + case GL_STENCIL_INDEX1_EXT: + case GL_STENCIL_INDEX4_EXT: + case GL_STENCIL_INDEX8_EXT: + case GL_STENCIL_INDEX16_EXT: + return GL_STENCIL_INDEX; + case GL_DEPTH_COMPONENT: + case GL_DEPTH_COMPONENT16: + case GL_DEPTH_COMPONENT24: + case GL_DEPTH_COMPONENT32: + return GL_DEPTH_COMPONENT; + /* XXX add floating point formats eventually */ + default: + return 0; + } +} + + +void GLAPIENTRY +_mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat, + GLsizei width, GLsizei height) +{ + struct gl_renderbuffer *rb; + GLenum baseFormat; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (target != GL_RENDERBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, "glRenderbufferStorageEXT(target)"); + return; + } + + baseFormat = base_internal_format(ctx, internalFormat); + if (baseFormat == 0) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glRenderbufferStorageEXT(internalFormat)"); + return; + } + + if (width < 1 || width > ctx->Const.MaxRenderbufferSize) { + _mesa_error(ctx, GL_INVALID_VALUE, "glRenderbufferStorageEXT(width)"); + return; + } + + if (height < 1 || height > ctx->Const.MaxRenderbufferSize) { + _mesa_error(ctx, GL_INVALID_VALUE, "glRenderbufferStorageEXT(height)"); + return; + } + + rb = ctx->CurrentRenderbuffer; + + if (!rb) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glRenderbufferStorageEXT"); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + /* Now allocate the storage */ + ASSERT(rb->AllocStorage); + if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) { + /* No error - check/set fields now */ + assert(rb->Width == width); + assert(rb->Height == height); + assert(rb->InternalFormat); + rb->_BaseFormat = baseFormat; + } + else { + /* Probably ran out of memory - clear the fields */ + rb->Width = 0; + rb->Height = 0; + rb->InternalFormat = GL_NONE; + rb->_BaseFormat = GL_NONE; + } + + /* + test_framebuffer_completeness(ctx, fb); + */ + /* XXX if this renderbuffer is attached anywhere, invalidate attachment + * points??? + */ +} + + +void GLAPIENTRY +_mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params) +{ + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (target != GL_RENDERBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetRenderbufferParameterivEXT(target)"); + return; + } + + if (!ctx->CurrentRenderbuffer) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetRenderbufferParameterivEXT"); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + switch (pname) { + case GL_RENDERBUFFER_WIDTH_EXT: + *params = ctx->CurrentRenderbuffer->Width; + return; + case GL_RENDERBUFFER_HEIGHT_EXT: + *params = ctx->CurrentRenderbuffer->Height; + return; + case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT: + *params = ctx->CurrentRenderbuffer->InternalFormat; + return; + case GL_RENDERBUFFER_RED_SIZE_EXT: + if (ctx->CurrentRenderbuffer->_BaseFormat == GL_RGB || + ctx->CurrentRenderbuffer->_BaseFormat == GL_RGBA) { + *params = ctx->CurrentRenderbuffer->ComponentSizes[0]; + } + else { + *params = 0; + } + break; + case GL_RENDERBUFFER_GREEN_SIZE_EXT: + if (ctx->CurrentRenderbuffer->_BaseFormat == GL_RGB || + ctx->CurrentRenderbuffer->_BaseFormat == GL_RGBA) { + *params = ctx->CurrentRenderbuffer->ComponentSizes[1]; + } + else { + *params = 0; + } + break; + case GL_RENDERBUFFER_BLUE_SIZE_EXT: + if (ctx->CurrentRenderbuffer->_BaseFormat == GL_RGB || + ctx->CurrentRenderbuffer->_BaseFormat == GL_RGBA) { + *params = ctx->CurrentRenderbuffer->ComponentSizes[2]; + } + else { + *params = 0; + } + break; + case GL_RENDERBUFFER_ALPHA_SIZE_EXT: + if (ctx->CurrentRenderbuffer->_BaseFormat == GL_RGB || + ctx->CurrentRenderbuffer->_BaseFormat == GL_RGBA) { + *params = ctx->CurrentRenderbuffer->ComponentSizes[3]; + } + else { + *params = 0; + } + break; + case GL_RENDERBUFFER_DEPTH_SIZE_EXT: + if (ctx->CurrentRenderbuffer->_BaseFormat == GL_DEPTH_COMPONENT) { + *params = ctx->CurrentRenderbuffer->ComponentSizes[0]; + } + else { + *params = 0; + } + break; + case GL_RENDERBUFFER_STENCIL_SIZE_EXT: + if (ctx->CurrentRenderbuffer->_BaseFormat == GL_STENCIL_INDEX) { + *params = ctx->CurrentRenderbuffer->ComponentSizes[0]; + } + else { + *params = 0; + } + break; + + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetRenderbufferParameterivEXT(target)"); + return; + } +} + + +GLboolean GLAPIENTRY +_mesa_IsFramebufferEXT(GLuint framebuffer) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); + if (framebuffer) { + struct gl_framebuffer *rb = lookup_framebuffer(ctx, framebuffer); + if (rb != NULL && rb != &DummyFramebuffer) + return GL_TRUE; + } + return GL_FALSE; +} + + +void GLAPIENTRY +_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer) +{ + struct gl_framebuffer *newFb, *newReadFb, *oldFb; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (target != GL_FRAMEBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glBindFramebufferEXT(target)"); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + if (framebuffer) { + /* Binding a user-created framebuffer object */ + newFb = lookup_framebuffer(ctx, framebuffer); + if (newFb == &DummyFramebuffer) { + /* ID was reserved, but no real framebuffer object made yet */ + newFb = NULL; + } + if (!newFb) { + /* create new framebuffer object */ + newFb = ctx->Driver.NewFramebuffer(ctx, framebuffer); + if (!newFb) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT"); + return; + } + _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newFb); + } + newFb->RefCount++; + newReadFb = newFb; + } + else { + /* Binding the window system framebuffer (which was originally set + * with MakeCurrent). + */ + newFb = ctx->WinSysDrawBuffer; + newReadFb = ctx->WinSysReadBuffer; + } + + oldFb = ctx->DrawBuffer; + if (oldFb && oldFb->Name != 0) { + oldFb->RefCount--; + if (oldFb->RefCount == 0) { + oldFb->Delete(oldFb); + } + } + + ASSERT(newFb != &DummyFramebuffer); + + /* Note, we set both the GL_DRAW_BUFFER and GL_READ_BUFFER state: */ + ctx->DrawBuffer = newFb; + ctx->ReadBuffer = newReadFb; +} + + +void GLAPIENTRY +_mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers) +{ + GLint i; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + for (i = 0; i < n; i++) { + if (framebuffers[i] > 0) { + struct gl_framebuffer *fb; + fb = lookup_framebuffer(ctx, framebuffers[i]); + if (fb) { + ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]); + + /* check if deleting currently bound framebuffer object */ + if (fb == ctx->DrawBuffer) { + /* bind default */ + ASSERT(fb->RefCount >= 2); + _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); + } + + /* remove from hash table immediately, to free the ID */ + _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]); + + if (fb != &DummyFramebuffer) { + /* But the object will not be freed until it's no longer + * bound in any context. + */ + fb->RefCount--; + if (fb->RefCount == 0) { + fb->Delete(fb); + } + } + } + } + } +} + + +void GLAPIENTRY +_mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers) +{ + GET_CURRENT_CONTEXT(ctx); + GLuint first; + GLint i; + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (n < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)"); + return; + } + + if (!framebuffers) + return; + + first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n); + + for (i = 0; i < n; i++) { + GLuint name = first + i; + framebuffers[i] = name; + /* insert dummy placeholder into hash table */ + _glthread_LOCK_MUTEX(ctx->Shared->Mutex); + _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer); + _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); + } +} + + + +GLenum GLAPIENTRY +_mesa_CheckFramebufferStatusEXT(GLenum target) +{ + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0); + + if (target != GL_FRAMEBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)"); + return 0; /* formerly GL_FRAMEBUFFER_STATUS_ERROR_EXT */ + } + + if (ctx->DrawBuffer->Name == 0) { + /* The window system / default framebuffer is always complete */ + return GL_FRAMEBUFFER_COMPLETE_EXT; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + _mesa_test_framebuffer_completeness(ctx, ctx->DrawBuffer); + return ctx->DrawBuffer->_Status; +} + + + +/** + * Do error checking common to glFramebufferTexture1D/2D/3DEXT. + * \return GL_TRUE if any error, GL_FALSE otherwise + */ +static GLboolean +error_check_framebuffer_texture(GLcontext *ctx, GLuint dims, + GLenum target, GLenum attachment, + GLenum textarget, GLuint texture, GLint level) +{ + ASSERT(dims >= 1 && dims <= 3); + + if (target != GL_FRAMEBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture%dDEXT(target)", dims); + return GL_TRUE; + } + + /* check framebuffer binding */ + if (ctx->DrawBuffer->Name == 0) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTexture%dDEXT", dims); + return GL_TRUE; + } + + /* only check textarget, level if texture ID is non-zero */ + if (texture) { + if ((dims == 1 && textarget != GL_TEXTURE_1D) || + (dims == 3 && textarget != GL_TEXTURE_3D) || + (dims == 2 && textarget != GL_TEXTURE_2D && + textarget != GL_TEXTURE_RECTANGLE_ARB && + !IS_CUBE_FACE(textarget))) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferTexture%dDEXT(textarget)", dims); + return GL_TRUE; + } + + if ((level < 0) || level >= _mesa_max_texture_levels(ctx, textarget)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferTexture%dDEXT(level)", dims); + return GL_TRUE; + } + } + + return GL_FALSE; +} + + +void GLAPIENTRY +_mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment, + GLenum textarget, GLuint texture, GLint level) +{ + struct gl_renderbuffer_attachment *att; + struct gl_texture_object *texObj; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (error_check_framebuffer_texture(ctx, 1, target, attachment, + textarget, texture, level)) + return; + + ASSERT(textarget == GL_TEXTURE_1D); + + att = get_attachment(ctx, ctx->DrawBuffer, attachment); + if (att == NULL) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture1DEXT(attachment)"); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + if (texture) { + texObj = (struct gl_texture_object *) + _mesa_HashLookup(ctx->Shared->TexObjects, texture); + if (!texObj) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferTexture1DEXT(texture)"); + return; + } + if (texObj->Target != textarget) { + _mesa_error(ctx, GL_INVALID_OPERATION, /* XXX correct error? */ + "glFramebufferTexture1DEXT(texture target)"); + return; + } + } + else { + /* remove texture attachment */ + texObj = NULL; + } + ctx->Driver.RenderbufferTexture(ctx, att, texObj, textarget, level, 0); +} + + +void GLAPIENTRY +_mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment, + GLenum textarget, GLuint texture, GLint level) +{ + struct gl_renderbuffer_attachment *att; + struct gl_texture_object *texObj; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (error_check_framebuffer_texture(ctx, 2, target, attachment, + textarget, texture, level)) + return; + + ASSERT(textarget == GL_TEXTURE_2D || + textarget == GL_TEXTURE_RECTANGLE_ARB || + IS_CUBE_FACE(textarget)); + + att = get_attachment(ctx, ctx->DrawBuffer, attachment); + if (att == NULL) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture2DEXT(attachment)"); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + if (texture) { + texObj = (struct gl_texture_object *) + _mesa_HashLookup(ctx->Shared->TexObjects, texture); + if (!texObj) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferTexture2DEXT(texture)"); + return; + } + if ((texObj->Target == GL_TEXTURE_2D && textarget != GL_TEXTURE_2D) || + (texObj->Target == GL_TEXTURE_RECTANGLE_ARB + && textarget != GL_TEXTURE_RECTANGLE_ARB) || + (texObj->Target == GL_TEXTURE_CUBE_MAP + && !IS_CUBE_FACE(textarget))) { + _mesa_error(ctx, GL_INVALID_OPERATION, /* XXX correct error? */ + "glFramebufferTexture2DEXT(texture target)"); + return; + } + } + else { + /* remove texture attachment */ + texObj = NULL; + } + ctx->Driver.RenderbufferTexture(ctx, att, texObj, textarget, level, 0); +} + + +void GLAPIENTRY +_mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment, + GLenum textarget, GLuint texture, + GLint level, GLint zoffset) +{ + struct gl_renderbuffer_attachment *att; + struct gl_texture_object *texObj; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (error_check_framebuffer_texture(ctx, 3, target, attachment, + textarget, texture, level)) + return; + + ASSERT(textarget == GL_TEXTURE_3D); + + att = get_attachment(ctx, ctx->DrawBuffer, attachment); + if (att == NULL) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture1DEXT(attachment)"); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + if (texture) { + const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1); + texObj = (struct gl_texture_object *) + _mesa_HashLookup(ctx->Shared->TexObjects, texture); + if (!texObj) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferTexture3DEXT(texture)"); + return; + } + if (texObj->Target != textarget) { + _mesa_error(ctx, GL_INVALID_OPERATION, /* XXX correct error? */ + "glFramebufferTexture3DEXT(texture target)"); + return; + } + if (zoffset < 0 || zoffset >= maxSize) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferTexture3DEXT(zoffset)"); + return; + } + } + else { + /* remove texture attachment */ + texObj = NULL; + } + ctx->Driver.RenderbufferTexture(ctx, att, texObj, textarget, + level, zoffset); +} + + +void GLAPIENTRY +_mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment, + GLenum renderbufferTarget, + GLuint renderbuffer) +{ + struct gl_renderbuffer_attachment *att; + struct gl_renderbuffer *rb; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (target != GL_FRAMEBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferRenderbufferEXT(target)"); + return; + } + + if (renderbufferTarget != GL_RENDERBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferRenderbufferEXT(renderbufferTarget)"); + return; + } + + if (ctx->DrawBuffer->Name == 0) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT"); + return; + } + + att = get_attachment(ctx, ctx->DrawBuffer, attachment); + if (att == NULL) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferRenderbufferEXT(attachment)"); + return; + } + + if (renderbuffer) { + rb = lookup_renderbuffer(ctx, renderbuffer); + if (!rb) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferRenderbufferEXT(renderbuffer)"); + return; + } + } + else { + /* remove renderbuffer attachment */ + rb = NULL; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + assert(ctx->Driver.FramebufferRenderbuffer); + ctx->Driver.FramebufferRenderbuffer(ctx, att, rb); +} + + +void GLAPIENTRY +_mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment, + GLenum pname, GLint *params) +{ + const struct gl_renderbuffer_attachment *att; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (target != GL_FRAMEBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(target)"); + return; + } + + if (ctx->DrawBuffer->Name == 0) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetFramebufferAttachmentParameterivEXT"); + return; + } + + att = get_attachment(ctx, ctx->DrawBuffer, attachment); + if (att == NULL) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(attachment)"); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + switch (pname) { + case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT: + *params = att->Type; + return; + case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT: + if (att->Type == GL_RENDERBUFFER_EXT) { + *params = att->Renderbuffer->Name; + } + else if (att->Type == GL_TEXTURE) { + *params = att->Texture->Name; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + } + return; + case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT: + if (att->Type == GL_TEXTURE) { + *params = att->TextureLevel; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + } + return; + case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT: + if (att->Type == GL_TEXTURE) { + *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + } + return; + case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT: + if (att->Type == GL_TEXTURE) { + *params = att->Zoffset; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + } + return; + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + return; + } +} + + +void GLAPIENTRY +_mesa_GenerateMipmapEXT(GLenum target) +{ + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + switch (target) { + case GL_TEXTURE_1D: + case GL_TEXTURE_2D: + case GL_TEXTURE_3D: + case GL_TEXTURE_CUBE_MAP: + /* OK, legal value */ + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target)"); + return; + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + texObj = _mesa_select_tex_object(ctx, texUnit, target); + + /* XXX this might not handle cube maps correctly */ + _mesa_generate_mipmap(ctx, target, texUnit, texObj); +} |