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-rw-r--r--src/mesa/main/fbobject.c1606
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diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c
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+++ b/src/mesa/main/fbobject.c
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+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5.1
+ *
+ * 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)
+{
+ (void) msg;
+ (void) 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;
+ GLuint j;
+
+ 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 (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {
+ if (fb->ColorDrawBuffer[j] != GL_NONE) {
+ const struct gl_renderbuffer_attachment *att
+ = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]);
+ assert(att);
+ if (att->Type == GL_NONE) {
+ fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;
+ fbo_incomplete("missing drawbuffer", j);
+ 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;
+ }
+ }
+
+ 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) {
+ _mesa_dereference_renderbuffer(&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.
+ */
+ _mesa_dereference_renderbuffer(&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 > (GLsizei) ctx->Const.MaxRenderbufferSize) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glRenderbufferStorageEXT(width)");
+ return;
+ }
+
+ if (height < 1 || height > (GLsizei) 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 == (GLuint) width &&
+ rb->Height == (GLuint) 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 == (GLuint) width);
+ assert(rb->Height == (GLuint) 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) {
+ _mesa_dereference_framebuffer(&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 */
+ _mesa_dereference_framebuffer(&oldFb);
+ }
+ 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.
+ */
+ _mesa_dereference_framebuffer(&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 */