diff options
Diffstat (limited to 'src/mesa/main/fbobject.c')
| -rw-r--r-- | src/mesa/main/fbobject.c | 1644 |
1 files changed, 1644 insertions, 0 deletions
diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c new file mode 100644 index 00000000000..191b81c39c6 --- /dev/null +++ b/src/mesa/main/fbobject.c @@ -0,0 +1,1644 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 1999-2006 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 "state.h" +#include "teximage.h" +#include "texobj.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. + */ +struct gl_renderbuffer * +_mesa_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. + */ +struct gl_framebuffer * +_mesa_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. + */ +struct gl_renderbuffer_attachment * +_mesa_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); + att->Texture->RefCount--; + if (att->Texture->RefCount == 0) { + ctx->Driver.DeleteTexture(ctx, att->Texture); + } + else { + /* tell driver that we're done rendering to this texture. */ + if (ctx->Driver.FinishRenderTexture) { + ctx->Driver.FinishRenderTexture(ctx, att); + } + } + att->Texture = NULL; + } + if (att->Type == GL_TEXTURE || 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_framebuffer *fb, + struct gl_renderbuffer_attachment *att, + struct gl_texture_object *texObj, + GLenum texTarget, GLuint level, GLuint zoffset) +{ + if (att->Texture == texObj) { + /* re-attaching same texture */ + ASSERT(att->Type == GL_TEXTURE); + } + else { + /* new attachment */ + _mesa_remove_attachment(ctx, att); + att->Type = GL_TEXTURE; + att->Texture = texObj; + texObj->RefCount++; + } + + /* always update these fields */ + 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; + + if (att->Texture->Image[att->CubeMapFace][att->TextureLevel]) { + ctx->Driver.RenderTexture(ctx, fb, att); + } +} + + +/** + * 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) +{ + /* XXX check if re-doing same attachment, exit early */ + _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() + * Attach a renderbuffer object to a framebuffer object. + */ +void +_mesa_framebuffer_renderbuffer(GLcontext *ctx, struct gl_framebuffer *fb, + GLenum attachment, struct gl_renderbuffer *rb) +{ + struct gl_renderbuffer_attachment *att; + + _glthread_LOCK_MUTEX(fb->Mutex); + if (rb) + _glthread_LOCK_MUTEX(rb->Mutex); + + att = _mesa_get_attachment(ctx, fb, attachment); + ASSERT(att); + + if (rb) { + _mesa_set_renderbuffer_attachment(ctx, att, rb); + } + else { + _mesa_remove_attachment(ctx, att); + } + + if (rb) + _glthread_UNLOCK_MUTEX(rb->Mutex); + _glthread_UNLOCK_MUTEX(fb->Mutex); +} + + +/** + * 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) { + /* OK */ + } + else if (ctx->Extensions.EXT_packed_depth_stencil && + att->Renderbuffer->_BaseFormat == GL_DEPTH_STENCIL_EXT) { + /* OK */ + } + else { + att->Complete = GL_FALSE; + return; + } + } + else { + /* no such thing as stencil textures */ + att->Complete = GL_FALSE; + return; + } + } + else if (att->Type == GL_RENDERBUFFER_EXT) { + ASSERT(att->Renderbuffer); + if (!att->Renderbuffer->InternalFormat || + 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) { + ASSERT(att->Renderbuffer->RedBits); + ASSERT(att->Renderbuffer->GreenBits); + ASSERT(att->Renderbuffer->BlueBits); + att->Complete = GL_FALSE; + return; + } + } + else if (format == GL_DEPTH) { + ASSERT(att->Renderbuffer->DepthBits); + if (att->Renderbuffer->_BaseFormat == GL_DEPTH_COMPONENT) { + /* OK */ + } + else if (ctx->Extensions.EXT_packed_depth_stencil && + att->Renderbuffer->_BaseFormat == GL_DEPTH_STENCIL_EXT) { + /* OK */ + } + else { + att->Complete = GL_FALSE; + return; + } + } + else { + assert(format == GL_STENCIL); + ASSERT(att->Renderbuffer->StencilBits); + if (att->Renderbuffer->_BaseFormat == GL_STENCIL_INDEX) { + /* OK */ + } + else if (ctx->Extensions.EXT_packed_depth_stencil && + att->Renderbuffer->_BaseFormat == GL_DEPTH_STENCIL_EXT) { + /* OK */ + } + else { + att->Complete = GL_FALSE; + return; + } + } + } + else { + ASSERT(att->Type == GL_NONE); + /* complete */ + return; + } +} + + +/** + * Helpful for debugging + */ +static void +fbo_incomplete(const char *msg, int index) +{ + /* + _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index); + */ +} + + +/** + * 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; + fbo_incomplete("depth attachment incomplete", -1); + 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; + fbo_incomplete("stencil attachment incomplete", -1); + 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; + fbo_incomplete("color attachment incomplete", i); + return; + } + } + + if (att->Type == GL_TEXTURE) { + const struct gl_texture_image *texImg + = att->Texture->Image[att->CubeMapFace][att->TextureLevel]; + w = texImg->Width; + h = texImg->Height; + f = texImg->_BaseFormat; + numImages++; + if (f != GL_RGB && f != GL_RGBA && f != GL_DEPTH_COMPONENT + && f != GL_DEPTH_STENCIL_EXT) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT; + fbo_incomplete("texture attachment incomplete", -1); + 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; + fbo_incomplete("width or height mismatch", -1); + return; + } + if (intFormat != GL_NONE && f != intFormat) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT; + fbo_incomplete("format mismatch", -1); + 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 + = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[i]); + assert(att); + if (att->Type == GL_NONE) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT; + fbo_incomplete("missing drawbuffer", i); + return; + } + } + } + + /* Check that the ReadBuffer is present */ + if (fb->ColorReadBuffer != GL_NONE) { + const struct gl_renderbuffer_attachment *att + = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer); + assert(att); + if (att->Type == GL_NONE) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT; + fbo_incomplete("missing readbuffer", -1); + return; + } + } + + /* Check if any renderbuffer is attached more than once. + * Note that there's one exception: a GL_DEPTH_STENCIL renderbuffer can be + * bound to both the stencil and depth attachment points at the same time. + */ + 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 && rb_i->_BaseFormat != GL_DEPTH_STENCIL_EXT) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DUPLICATE_ATTACHMENT_EXT; + fbo_incomplete("multiply bound renderbuffer", -1); + return; + } + } + } + } + + + if (numImages == 0) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT; + fbo_incomplete("no attachments", -1); + 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 = _mesa_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 = _mesa_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 = _mesa_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. + * This is very similar to _mesa_base_tex_format() but the set of valid + * internal formats is somewhat different. + * + * \return one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX, GL_DEPTH_COMPONENT + * GL_DEPTH_STENCIL_EXT or zero if error. + */ +GLenum +_mesa_base_fbo_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; + case GL_DEPTH_STENCIL_EXT: + case GL_DEPTH24_STENCIL8_EXT: + if (ctx->Extensions.EXT_packed_depth_stencil) + return GL_DEPTH_STENCIL_EXT; + else + return 0; + /* 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 = _mesa_base_fbo_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); + + if (rb->InternalFormat == internalFormat && + rb->Width == width && + rb->Height == height) { + /* no change in allocation needed */ + return; + } + + /* These MUST get set by the AllocStorage func */ + rb->_ActualFormat = 0; + rb->RedBits = + rb->GreenBits = + rb->BlueBits = + rb->AlphaBits = + rb->IndexBits = + rb->DepthBits = + rb->StencilBits = 0; + + /* Now allocate the storage */ + ASSERT(rb->AllocStorage); + if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) { + /* No error - check/set fields now */ + assert(rb->_ActualFormat); + assert(rb->Width == width); + assert(rb->Height == height); + assert(rb->RedBits || rb->GreenBits || rb->BlueBits || rb->AlphaBits || + rb->DepthBits || rb->StencilBits || rb->IndexBits); + rb->InternalFormat = internalFormat; + rb->_BaseFormat = baseFormat; + } + else { + /* Probably ran out of memory - clear the fields */ + rb->Width = 0; + rb->Height = 0; + rb->InternalFormat = GL_NONE; + rb->_ActualFormat = GL_NONE; + rb->_BaseFormat = GL_NONE; + rb->RedBits = + rb->GreenBits = + rb->BlueBits = + rb->AlphaBits = + rb->IndexBits = + rb->DepthBits = + rb->StencilBits = 0; + } + + /* + 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: + *params = ctx->CurrentRenderbuffer->RedBits; + break; + case GL_RENDERBUFFER_GREEN_SIZE_EXT: + *params = ctx->CurrentRenderbuffer->GreenBits; + break; + case GL_RENDERBUFFER_BLUE_SIZE_EXT: + *params = ctx->CurrentRenderbuffer->BlueBits; + break; + case GL_RENDERBUFFER_ALPHA_SIZE_EXT: + *params = ctx->CurrentRenderbuffer->AlphaBits; + break; + case GL_RENDERBUFFER_DEPTH_SIZE_EXT: + *params = ctx->CurrentRenderbuffer->DepthBits; + break; + case GL_RENDERBUFFER_STENCIL_SIZE_EXT: + *params = ctx->CurrentRenderbuffer->StencilBits; + 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 = _mesa_lookup_framebuffer(ctx, framebuffer); + if (rb != NULL && rb != &DummyFramebuffer) + return GL_TRUE; + } + return GL_FALSE; +} + + +static void +check_begin_texture_render(GLcontext *ctx, struct gl_framebuffer *fb) +{ + GLuint i; + ASSERT(ctx->Driver.RenderTexture); + for (i = 0; i < BUFFER_COUNT; i++) { + struct gl_renderbuffer_attachment *att = fb->Attachment + i; + struct gl_texture_object *texObj = att->Texture; + if (texObj + && att->Texture->Image[att->CubeMapFace][att->TextureLevel]) { + ctx->Driver.RenderTexture(ctx, fb, att); + } + } +} + + +/** + * Examine all the framebuffer's attachments to see if any are textures. + * If so, call ctx->Driver.FinishRenderTexture() for each texture to + * notify the device driver that the texture image may have changed. + */ +static void +check_end_texture_render(GLcontext *ctx, struct gl_framebuffer *fb) +{ + if (ctx->Driver.FinishRenderTexture) { + GLuint i; + for (i = 0; i < BUFFER_COUNT; i++) { + struct gl_renderbuffer_attachment *att = fb->Attachment + i; + struct gl_texture_object *texObj = att->Texture; + if (texObj) { + ctx->Driver.FinishRenderTexture(ctx, att); + } + } + } +} + + +void GLAPIENTRY +_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer) +{ + struct gl_framebuffer *newFb, *oldFb; + GLboolean bindReadBuf, bindDrawBuf; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (!ctx->Extensions.EXT_framebuffer_object) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBindFramebufferEXT(unsupported)"); + return; + } + + switch (target) { +#if FEATURE_EXT_framebuffer_blit + case GL_DRAW_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)"); + return; + } + bindDrawBuf = GL_TRUE; + bindReadBuf = GL_FALSE; + break; + case GL_READ_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)"); + return; + } + bindDrawBuf = GL_FALSE; + bindReadBuf = GL_TRUE; + break; +#endif + case GL_FRAMEBUFFER_EXT: + bindDrawBuf = GL_TRUE; + bindReadBuf = GL_TRUE; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)"); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + if (framebuffer) { + /* Binding a user-created framebuffer object */ + newFb = _mesa_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); + } + _glthread_LOCK_MUTEX(newFb->Mutex); + if (bindReadBuf) + newFb->RefCount++; + if (bindDrawBuf) + newFb->RefCount++; + _glthread_UNLOCK_MUTEX(newFb->Mutex); + } + else { + /* Binding the window system framebuffer (which was originally set + * with MakeCurrent). + */ + newFb = ctx->WinSysDrawBuffer; + } + + ASSERT(newFb); + ASSERT(newFb != &DummyFramebuffer); + + /* + * XXX check if re-binding same buffer and skip some of this code. + */ + + if (bindReadBuf) { + oldFb = ctx->ReadBuffer; + if (oldFb && oldFb->Name != 0) { + _glthread_LOCK_MUTEX(oldFb->Mutex); + oldFb->RefCount--; + _glthread_UNLOCK_MUTEX(oldFb->Mutex); + if (oldFb->RefCount == 0) { + oldFb->Delete(oldFb); + } + } + ctx->ReadBuffer = newFb; + } + + if (bindDrawBuf) { + oldFb = ctx->DrawBuffer; + if (oldFb && oldFb->Name != 0) { + /* check if old FB had any texture attachments */ + check_end_texture_render(ctx, oldFb); + /* check if time to delete this framebuffer */ + _glthread_LOCK_MUTEX(oldFb->Mutex); + oldFb->RefCount--; + if (oldFb->RefCount == 0) { + oldFb->Delete(oldFb); + } + _glthread_UNLOCK_MUTEX(oldFb->Mutex); + } + ctx->DrawBuffer = newFb; + if (newFb->Name != 0) { + /* check if newly bound framebuffer has any texture attachments */ + check_begin_texture_render(ctx, newFb); + } + } + + if (ctx->Driver.BindFramebuffer) { + ctx->Driver.BindFramebuffer(ctx, target, newFb); + } +} + + +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 = _mesa_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. + */ + _glthread_LOCK_MUTEX(fb->Mutex); + fb->RefCount--; + _glthread_UNLOCK_MUTEX(fb->Mutex); + 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) +{ + struct gl_framebuffer *buffer; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0); + + switch (target) { +#if FEATURE_EXT_framebuffer_blit + case GL_DRAW_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)"); + return 0; + } + buffer = ctx->DrawBuffer; + break; + case GL_READ_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)"); + return 0; + } + buffer = ctx->ReadBuffer; + break; +#endif + case GL_FRAMEBUFFER_EXT: + buffer = ctx->DrawBuffer; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)"); + return 0; /* formerly GL_FRAMEBUFFER_STATUS_ERROR_EXT */ + } + + if (buffer->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, buffer); + return buffer->_Status; +} + + + +/** + * Common code called by glFramebufferTexture1D/2D/3DEXT(). + */ +static void +framebuffer_texture(GLuint dims, GLenum target, GLenum attachment, + GLenum textarget, GLuint texture, + GLint level, GLint zoffset) +{ + struct gl_renderbuffer_attachment *att; + struct gl_texture_object *texObj = NULL; + struct gl_framebuffer *fb; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (target != GL_FRAMEBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture%dDEXT(target)", dims); + return; + } + + fb = ctx->DrawBuffer; + ASSERT(fb); + + /* check framebuffer binding */ + if (fb->Name == 0) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTexture%dDEXT", dims); + return; + } + + if (texture) { + texObj = _mesa_lookup_texture(ctx, texture); + } + + /* Check dimension-dependent things */ + switch (dims) { + case 1: + if (textarget != GL_TEXTURE_1D) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture1DEXT(textarget)"); + return; + } + if (texObj && texObj->Target != GL_TEXTURE_1D) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTexture1DEXT(texture target mismatch)"); + return; + } + break; + case 2: + if (textarget != GL_TEXTURE_2D && + textarget != GL_TEXTURE_RECTANGLE_ARB && + !IS_CUBE_FACE(textarget)) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture2DEXT(textarget)"); + return; + } + if (texObj) { + 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, + "glFramebufferTexture1DEXT(texture target mismatch)"); + return; + } + } + break; + case 3: + if (textarget != GL_TEXTURE_3D) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture3DEXT(textarget)"); + return; + } + if (texObj && texObj->Target != GL_TEXTURE_3D) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTexture3DEXT(texture target mismatch)"); + return; + } + { + const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1); + if (zoffset < 0 || zoffset >= maxSize) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferTexture3DEXT(zoffset)"); + return; + } + } + break; + default: + _mesa_problem(ctx, "Unexpected dims in error_check_framebuffer_texture"); + return; + } + + if ((level < 0) || level >= _mesa_max_texture_levels(ctx, textarget)) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferTexture%dDEXT(level)", dims); + return; + } + + att = _mesa_get_attachment(ctx, fb, attachment); + if (att == NULL) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture%dDEXT(attachment)", dims); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + _glthread_LOCK_MUTEX(fb->Mutex); + if (texObj) { + _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget, + level, zoffset); + } + else { + _mesa_remove_attachment(ctx, att); + } + _glthread_UNLOCK_MUTEX(fb->Mutex); +} + + + +void GLAPIENTRY +_mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment, + GLenum textarget, GLuint texture, GLint level) +{ + const GLint zoffset = 0; + framebuffer_texture(1, target, attachment, textarget, texture, + level, zoffset); +} + + +void GLAPIENTRY +_mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment, + GLenum textarget, GLuint texture, GLint level) +{ + const GLint zoffset = 0; + framebuffer_texture(2, target, attachment, textarget, texture, + level, zoffset); +} + + +void GLAPIENTRY +_mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment, + GLenum textarget, GLuint texture, + GLint level, GLint zoffset) +{ + framebuffer_texture(3, target, attachment, textarget, texture, + level, zoffset); +} + + + +void GLAPIENTRY +_mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment, + GLenum renderbufferTarget, + GLuint renderbuffer) +{ + struct gl_renderbuffer_attachment *att; + struct gl_framebuffer *fb; + struct gl_renderbuffer *rb; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + switch (target) { +#if FEATURE_EXT_framebuffer_blit + case GL_DRAW_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferRenderbufferEXT(target)"); + return; + } + fb = ctx->DrawBuffer; + break; + case GL_READ_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferRenderbufferEXT(target)"); + return; + } + fb = ctx->ReadBuffer; + break; +#endif + case GL_FRAMEBUFFER_EXT: + fb = ctx->DrawBuffer; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferRenderbufferEXT(target)"); + return; + } + + if (renderbufferTarget != GL_RENDERBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferRenderbufferEXT(renderbufferTarget)"); + return; + } + + if (fb->Name == 0) { + /* Can't attach new renderbuffers to a window system framebuffer */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT"); + return; + } + + att = _mesa_get_attachment(ctx, fb, attachment); + if (att == NULL) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferRenderbufferEXT(attachment)"); + return; + } + + if (renderbuffer) { + rb = _mesa_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, fb, attachment, rb); + + /* Some subsequent GL commands may depend on the framebuffer's visual + * after the binding is updated. Update visual info now. + */ + _mesa_update_framebuffer_visual(fb); +} + + +void GLAPIENTRY +_mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment, + GLenum pname, GLint *params) +{ + const struct gl_renderbuffer_attachment *att; + struct gl_framebuffer *buffer; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + switch (target) { +#if FEATURE_EXT_framebuffer_blit + case GL_DRAW_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(target)"); + return; + } + buffer = ctx->DrawBuffer; + break; + case GL_READ_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(target)"); + return; + } + buffer = ctx->ReadBuffer; + break; +#endif + case GL_FRAMEBUFFER_EXT: + buffer = ctx->DrawBuffer; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(target)"); + return; + } + + if (buffer->Name == 0) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetFramebufferAttachmentParameterivEXT"); + return; + } + + att = _mesa_get_attachment(ctx, buffer, 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); +} + + +#if FEATURE_EXT_framebuffer_blit +void GLAPIENTRY +_mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, + GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, + GLbitfield mask, GLenum filter) +{ + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + if (ctx->NewState) { + _mesa_update_state(ctx); + } + + if (!ctx->ReadBuffer) { + /* XXX */ + } + + /* check for complete framebuffers */ + if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT || + ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { + _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT, + "glBlitFramebufferEXT(incomplete draw/read buffers)"); + return; + } + + if (filter != GL_NEAREST && filter != GL_LINEAR) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)"); + return; + } + + if (mask & ~(GL_COLOR_BUFFER_BIT | + GL_DEPTH_BUFFER_BIT | + GL_STENCIL_BUFFER_BIT)) { + _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)"); + return; + } + + /* depth/stencil must be blitted with nearest filtering */ + if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT)) + && filter != GL_NEAREST) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter"); + return; + } + + if (mask & GL_STENCIL_BUFFER_BIT) { + struct gl_renderbuffer *readRb = ctx->ReadBuffer->_StencilBuffer; + struct gl_renderbuffer *drawRb = ctx->DrawBuffer->_StencilBuffer; + if (readRb->StencilBits != drawRb->StencilBits) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlitFramebufferEXT(stencil buffer size mismatch"); + return; + } + } + + if (mask & GL_DEPTH_BUFFER_BIT) { + struct gl_renderbuffer *readRb = ctx->ReadBuffer->_DepthBuffer; + struct gl_renderbuffer *drawRb = ctx->DrawBuffer->_DepthBuffer; + if (readRb->DepthBits != drawRb->DepthBits) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlitFramebufferEXT(depth buffer size mismatch"); + return; + } + } + + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT"); + return; + } + + ASSERT(ctx->Driver.BlitFramebuffer); + ctx->Driver.BlitFramebuffer(ctx, + srcX0, srcY0, srcX1, srcY1, + dstX0, dstY0, dstX1, dstY1, + mask, filter); +} +#endif /* FEATURE_EXT_framebuffer_blit */ |