| /* |
| * Mesa 3-D graphics library |
| * Version: 7.1 |
| * |
| * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. |
| * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
| * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| |
| /* |
| * GL_EXT/ARB_framebuffer_object extensions |
| * |
| * Authors: |
| * Brian Paul |
| */ |
| |
| |
| #include "buffers.h" |
| #include "context.h" |
| #include "enums.h" |
| #include "fbobject.h" |
| #include "formats.h" |
| #include "framebuffer.h" |
| #include "hash.h" |
| #include "macros.h" |
| #include "renderbuffer.h" |
| #include "state.h" |
| #include "teximage.h" |
| #include "texobj.h" |
| |
| |
| /** Set this to 1 to help debug FBO incompleteness problems */ |
| #define DEBUG_FBO 0 |
| |
| /** Set this to 1 to debug/log glBlitFramebuffer() calls */ |
| #define DEBUG_BLIT 0 |
| |
| |
| /** |
| * 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) |
| |
| |
| static void |
| delete_dummy_renderbuffer(struct gl_renderbuffer *rb) |
| { |
| /* no op */ |
| } |
| |
| static void |
| delete_dummy_framebuffer(struct gl_framebuffer *fb) |
| { |
| /* no op */ |
| } |
| |
| |
| void |
| _mesa_init_fbobjects(GLcontext *ctx) |
| { |
| DummyFramebuffer.Delete = delete_dummy_framebuffer; |
| DummyRenderbuffer.Delete = delete_dummy_renderbuffer; |
| } |
| |
| |
| /** |
| * 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; |
| } |
| |
| |
| /** |
| * Mark the given framebuffer as invalid. This will force the |
| * test for framebuffer completeness to be done before the framebuffer |
| * is used. |
| */ |
| static void |
| invalidate_framebuffer(struct gl_framebuffer *fb) |
| { |
| fb->_Status = 0; /* "indeterminate" */ |
| } |
| |
| |
| /** |
| * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding |
| * gl_renderbuffer_attachment object. |
| * This function is only used for user-created FB objects, not the |
| * default / window-system FB object. |
| * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to |
| * the depth buffer attachment point. |
| */ |
| struct gl_renderbuffer_attachment * |
| _mesa_get_attachment(GLcontext *ctx, struct gl_framebuffer *fb, |
| GLenum attachment) |
| { |
| GLuint i; |
| |
| assert(fb->Name > 0); |
| |
| 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_STENCIL_ATTACHMENT: |
| /* fall-through */ |
| case GL_DEPTH_BUFFER: |
| /* fall-through / new in GL 3.0 */ |
| case GL_DEPTH_ATTACHMENT_EXT: |
| return &fb->Attachment[BUFFER_DEPTH]; |
| case GL_STENCIL_BUFFER: |
| /* fall-through / new in GL 3.0 */ |
| case GL_STENCIL_ATTACHMENT_EXT: |
| return &fb->Attachment[BUFFER_STENCIL]; |
| default: |
| return NULL; |
| } |
| } |
| |
| |
| /** |
| * As above, but only used for getting attachments of the default / |
| * window-system framebuffer (not user-created framebuffer objects). |
| */ |
| static struct gl_renderbuffer_attachment * |
| _mesa_get_fb0_attachment(GLcontext *ctx, struct gl_framebuffer *fb, |
| GLenum attachment) |
| { |
| assert(fb->Name == 0); |
| |
| switch (attachment) { |
| case GL_FRONT_LEFT: |
| return &fb->Attachment[BUFFER_FRONT_LEFT]; |
| case GL_FRONT_RIGHT: |
| return &fb->Attachment[BUFFER_FRONT_RIGHT]; |
| case GL_BACK_LEFT: |
| return &fb->Attachment[BUFFER_BACK_LEFT]; |
| case GL_BACK_RIGHT: |
| return &fb->Attachment[BUFFER_BACK_RIGHT]; |
| case GL_AUX0: |
| if (fb->Visual.numAuxBuffers == 1) { |
| return &fb->Attachment[BUFFER_AUX0]; |
| } |
| return NULL; |
| case GL_DEPTH_BUFFER: |
| /* fall-through / new in GL 3.0 */ |
| case GL_DEPTH_ATTACHMENT_EXT: |
| return &fb->Attachment[BUFFER_DEPTH]; |
| case GL_STENCIL_BUFFER: |
| /* fall-through / new in GL 3.0 */ |
| 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 (ctx->Driver.FinishRenderTexture) { |
| /* tell driver that we're done rendering to this texture. */ |
| ctx->Driver.FinishRenderTexture(ctx, att); |
| } |
| _mesa_reference_texobj(&att->Texture, NULL); /* unbind */ |
| ASSERT(!att->Texture); |
| } |
| if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) { |
| ASSERT(!att->Texture); |
| _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */ |
| ASSERT(!att->Renderbuffer); |
| } |
| 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); |
| if (ctx->Driver.FinishRenderTexture) |
| ctx->Driver.FinishRenderTexture(ctx, att); |
| } |
| else { |
| /* new attachment */ |
| if (ctx->Driver.FinishRenderTexture && att->Texture) |
| ctx->Driver.FinishRenderTexture(ctx, att); |
| _mesa_remove_attachment(ctx, att); |
| att->Type = GL_TEXTURE; |
| assert(!att->Texture); |
| _mesa_reference_texobj(&att->Texture, texObj); |
| } |
| |
| /* always update these fields */ |
| att->TextureLevel = level; |
| att->CubeMapFace = _mesa_tex_target_to_face(texTarget); |
| att->Zoffset = zoffset; |
| att->Complete = GL_FALSE; |
| |
| if (att->Texture->Image[att->CubeMapFace][att->TextureLevel]) { |
| ctx->Driver.RenderTexture(ctx, fb, att); |
| } |
| |
| invalidate_framebuffer(fb); |
| } |
| |
| |
| /** |
| * 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->Texture = NULL; /* just to be safe */ |
| att->Complete = GL_FALSE; |
| _mesa_reference_renderbuffer(&att->Renderbuffer, rb); |
| } |
| |
| |
| /** |
| * 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); |
| |
| att = _mesa_get_attachment(ctx, fb, attachment); |
| ASSERT(att); |
| if (rb) { |
| _mesa_set_renderbuffer_attachment(ctx, att, rb); |
| if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) { |
| /* do stencil attachment here (depth already done above) */ |
| att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT); |
| assert(att); |
| _mesa_set_renderbuffer_attachment(ctx, att, rb); |
| } |
| } |
| else { |
| _mesa_remove_attachment(ctx, att); |
| } |
| |
| invalidate_framebuffer(fb); |
| |
| _glthread_UNLOCK_MUTEX(fb->Mutex); |
| } |
| |
| |
| /** |
| * For debug only. |
| */ |
| static void |
| att_incomplete(const char *msg) |
| { |
| #if DEBUG_FBO |
| _mesa_debug(NULL, "attachment incomplete: %s\n", msg); |
| #else |
| (void) msg; |
| #endif |
| } |
| |
| |
| /** |
| * For debug only. |
| */ |
| static void |
| fbo_incomplete(const char *msg, int index) |
| { |
| #if DEBUG_FBO |
| _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index); |
| #else |
| (void) msg; |
| (void) index; |
| #endif |
| } |
| |
| |
| |
| |
| /** |
| * 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; |
| GLenum baseFormat; |
| |
| if (!texObj) { |
| att_incomplete("no texobj"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| |
| texImage = texObj->Image[att->CubeMapFace][att->TextureLevel]; |
| if (!texImage) { |
| att_incomplete("no teximage"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| if (texImage->Width < 1 || texImage->Height < 1) { |
| att_incomplete("teximage width/height=0"); |
| printf("texobj = %u\n", texObj->Name); |
| printf("level = %d\n", att->TextureLevel); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) { |
| att_incomplete("bad z offset"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| |
| baseFormat = _mesa_get_format_base_format(texImage->TexFormat); |
| |
| if (format == GL_COLOR) { |
| if (baseFormat != GL_RGB && |
| baseFormat != GL_RGBA && |
| (!ctx->Extensions.ARB_framebuffer_object || |
| baseFormat != GL_ALPHA)) { |
| att_incomplete("bad format"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| if (_mesa_is_format_compressed(texImage->TexFormat)) { |
| att_incomplete("compressed internalformat"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| } |
| else if (format == GL_DEPTH) { |
| if (baseFormat == GL_DEPTH_COMPONENT) { |
| /* OK */ |
| } |
| else if (ctx->Extensions.EXT_packed_depth_stencil && |
| ctx->Extensions.ARB_depth_texture && |
| baseFormat == GL_DEPTH_STENCIL_EXT) { |
| /* OK */ |
| } |
| else { |
| att->Complete = GL_FALSE; |
| att_incomplete("bad depth format"); |
| return; |
| } |
| } |
| else { |
| ASSERT(format == GL_STENCIL); |
| if (ctx->Extensions.EXT_packed_depth_stencil && |
| ctx->Extensions.ARB_depth_texture && |
| baseFormat == GL_DEPTH_STENCIL_EXT) { |
| /* OK */ |
| } |
| else { |
| /* no such thing as stencil-only textures */ |
| att_incomplete("illegal stencil texture"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| } |
| } |
| else if (att->Type == GL_RENDERBUFFER_EXT) { |
| const GLenum baseFormat = |
| _mesa_get_format_base_format(att->Renderbuffer->Format); |
| |
| ASSERT(att->Renderbuffer); |
| if (!att->Renderbuffer->InternalFormat || |
| att->Renderbuffer->Width < 1 || |
| att->Renderbuffer->Height < 1) { |
| att_incomplete("0x0 renderbuffer"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| if (format == GL_COLOR) { |
| if (baseFormat != GL_RGB && |
| baseFormat != GL_RGBA) { |
| att_incomplete("bad renderbuffer color format"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| } |
| else if (format == GL_DEPTH) { |
| if (baseFormat == GL_DEPTH_COMPONENT) { |
| /* OK */ |
| } |
| else if (ctx->Extensions.EXT_packed_depth_stencil && |
| baseFormat == GL_DEPTH_STENCIL_EXT) { |
| /* OK */ |
| } |
| else { |
| att_incomplete("bad renderbuffer depth format"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| } |
| else { |
| assert(format == GL_STENCIL); |
| if (baseFormat == GL_STENCIL_INDEX) { |
| /* OK */ |
| } |
| else if (ctx->Extensions.EXT_packed_depth_stencil && |
| baseFormat == GL_DEPTH_STENCIL_EXT) { |
| /* OK */ |
| } |
| else { |
| att->Complete = GL_FALSE; |
| att_incomplete("bad renderbuffer stencil format"); |
| 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. |
| * Calls the ctx->Driver.ValidateFramebuffer() function to allow the |
| * driver to make hardware-specific validation/completeness checks. |
| * 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; |
| GLenum intFormat = GL_NONE; /* color buffers' internal format */ |
| GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0; |
| GLint numSamples = -1; |
| 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. |
| * -2: depth buffer |
| * -1: stencil buffer |
| * >=0: color buffer |
| */ |
| for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) { |
| struct gl_renderbuffer_attachment *att; |
| GLenum f; |
| |
| /* |
| * XXX for ARB_fbo, only check color buffers that are named by |
| * GL_READ_BUFFER and GL_DRAW_BUFFERi. |
| */ |
| |
| /* check for attachment completeness |
| */ |
| 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; |
| } |
| } |
| |
| /* get width, height, format of the renderbuffer/texture |
| */ |
| if (att->Type == GL_TEXTURE) { |
| const struct gl_texture_image *texImg |
| = att->Texture->Image[att->CubeMapFace][att->TextureLevel]; |
| minWidth = MIN2(minWidth, texImg->Width); |
| maxWidth = MAX2(maxWidth, texImg->Width); |
| minHeight = MIN2(minHeight, texImg->Height); |
| maxHeight = MAX2(maxHeight, texImg->Height); |
| f = texImg->_BaseFormat; |
| numImages++; |
| if (f != GL_RGB && f != GL_RGBA && f != GL_DEPTH_COMPONENT |
| && f != GL_DEPTH_STENCIL_EXT |
| && (!ctx->Extensions.ARB_framebuffer_object || f != GL_ALPHA)) { |
| fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT; |
| fbo_incomplete("texture attachment incomplete", -1); |
| return; |
| } |
| } |
| else if (att->Type == GL_RENDERBUFFER_EXT) { |
| minWidth = MIN2(minWidth, att->Renderbuffer->Width); |
| maxWidth = MAX2(minWidth, att->Renderbuffer->Width); |
| minHeight = MIN2(minHeight, att->Renderbuffer->Height); |
| maxHeight = MAX2(minHeight, att->Renderbuffer->Height); |
| f = att->Renderbuffer->InternalFormat; |
| numImages++; |
| } |
| else { |
| assert(att->Type == GL_NONE); |
| continue; |
| } |
| |
| if (numSamples < 0) { |
| /* first buffer */ |
| numSamples = att->Renderbuffer->NumSamples; |
| } |
| |
| /* Error-check width, height, format, samples |
| */ |
| if (numImages == 1) { |
| /* save format, num samples */ |
| if (i >= 0) { |
| intFormat = f; |
| } |
| } |
| else { |
| if (!ctx->Extensions.ARB_framebuffer_object) { |
| /* check that width, height, format are same */ |
| if (minWidth != maxWidth || minHeight != maxHeight) { |
| fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT; |
| fbo_incomplete("width or height mismatch", -1); |
| return; |
| } |
| /* check that all color buffer have same format */ |
| if (intFormat != GL_NONE && f != intFormat) { |
| fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT; |
| fbo_incomplete("format mismatch", -1); |
| return; |
| } |
| } |
| if (att->Renderbuffer && |
| att->Renderbuffer->NumSamples != numSamples) { |
| fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE; |
| fbo_incomplete("inconsistant number of samples", i); |
| return; |
| } |
| |
| } |
| } |
| |
| #if FEATURE_GL |
| if (ctx->API == API_OPENGL) { |
| /* 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; |
| } |
| } |
| } |
| #else |
| (void) j; |
| #endif |
| |
| if (numImages == 0) { |
| fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT; |
| fbo_incomplete("no attachments", -1); |
| return; |
| } |
| |
| /* Provisionally set status = COMPLETE ... */ |
| fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT; |
| |
| /* ... but the driver may say the FB is incomplete. |
| * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED |
| * if anything. |
| */ |
| if (ctx->Driver.ValidateFramebuffer) { |
| ctx->Driver.ValidateFramebuffer(ctx, fb); |
| if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { |
| fbo_incomplete("driver marked FBO as incomplete", -1); |
| } |
| } |
| |
| if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) { |
| /* |
| * Note that if ARB_framebuffer_object is supported and the attached |
| * renderbuffers/textures are different sizes, the framebuffer |
| * width/height will be set to the smallest width/height. |
| */ |
| fb->Width = minWidth; |
| fb->Height = minHeight; |
| |
| /* finally, update the visual info for the framebuffer */ |
| _mesa_update_framebuffer_visual(fb); |
| } |
| } |
| |
| |
| 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; |
| GET_CURRENT_CONTEXT(ctx); |
| |
| ASSERT_OUTSIDE_BEGIN_END(ctx); |
| |
| if (target != GL_RENDERBUFFER_EXT) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)"); |
| return; |
| } |
| |
| /* No need to flush here since the render buffer binding has no |
| * effect on rendering state. |
| */ |
| |
| if (renderbuffer) { |
| newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer); |
| if (newRb == &DummyRenderbuffer) { |
| /* ID was reserved, but no real renderbuffer object made yet */ |
| newRb = NULL; |
| } |
| else if (!newRb && ctx->Extensions.ARB_framebuffer_object) { |
| /* All RB IDs must be Gen'd */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)"); |
| return; |
| } |
| |
| 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 = 1; /* referenced by hash table */ |
| } |
| } |
| else { |
| newRb = NULL; |
| } |
| |
| ASSERT(newRb != &DummyRenderbuffer); |
| |
| _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb); |
| } |
| |
| |
| /** |
| * If the given renderbuffer is anywhere attached to the framebuffer, detach |
| * the renderbuffer. |
| * This is used when a renderbuffer object is deleted. |
| * The spec calls for unbinding. |
| */ |
| static void |
| detach_renderbuffer(GLcontext *ctx, |
| struct gl_framebuffer *fb, |
| struct gl_renderbuffer *rb) |
| { |
| GLuint i; |
| for (i = 0; i < BUFFER_COUNT; i++) { |
| if (fb->Attachment[i].Renderbuffer == rb) { |
| _mesa_remove_attachment(ctx, &fb->Attachment[i]); |
| } |
| } |
| invalidate_framebuffer(fb); |
| } |
| |
| |
| 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); |
| } |
| |
| if (ctx->DrawBuffer->Name) { |
| detach_renderbuffer(ctx, ctx->DrawBuffer, rb); |
| } |
| if (ctx->ReadBuffer->Name && ctx->ReadBuffer != ctx->DrawBuffer) { |
| detach_renderbuffer(ctx, ctx->ReadBuffer, rb); |
| } |
| |
| /* Remove from hash table immediately, to free the ID. |
| * But the object will not be freed until it's no longer |
| * referenced anywhere else. |
| */ |
| _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]); |
| |
| if (rb != &DummyRenderbuffer) { |
| /* no longer referenced by hash table */ |
| _mesa_reference_renderbuffer(&rb, NULL); |
| } |
| } |
| } |
| } |
| } |
| |
| |
| 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. |
| * |
| * XXX in the future when we support red-only and red-green formats |
| * we'll also return GL_RED and GL_RG. |
| */ |
| 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: |
| case GL_RGBA16_SNORM: |
| 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; |
| } |
| } |
| |
| |
| /** sentinal value, see below */ |
| #define NO_SAMPLES 1000 |
| |
| |
| /** |
| * Helper function used by _mesa_RenderbufferStorageEXT() and |
| * _mesa_RenderbufferStorageMultisample(). |
| * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT(). |
| */ |
| static void |
| renderbuffer_storage(GLenum target, GLenum internalFormat, |
| GLsizei width, GLsizei height, GLsizei samples) |
| { |
| const char *func = samples == NO_SAMPLES ? |
| "glRenderbufferStorage" : "RenderbufferStorageMultisample"; |
| 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, "%s(target)", func); |
| return; |
| } |
| |
| baseFormat = _mesa_base_fbo_format(ctx, internalFormat); |
| if (baseFormat == 0) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func); |
| return; |
| } |
| |
| if (width < 1 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) { |
| _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func); |
| return; |
| } |
| |
| if (height < 1 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) { |
| _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func); |
| return; |
| } |
| |
| if (samples == NO_SAMPLES) { |
| /* NumSamples == 0 indicates non-multisampling */ |
| samples = 0; |
| } |
| else if (samples > (GLsizei) ctx->Const.MaxSamples) { |
| /* note: driver may choose to use more samples than what's requested */ |
| _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func); |
| return; |
| } |
| |
| rb = ctx->CurrentRenderbuffer; |
| if (!rb) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, func); |
| 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->Format = MESA_FORMAT_NONE; |
| rb->NumSamples = samples; |
| |
| /* Now allocate the storage */ |
| ASSERT(rb->AllocStorage); |
| if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) { |
| /* No error - check/set fields now */ |
| assert(rb->Format != MESA_FORMAT_NONE); |
| assert(rb->Width == (GLuint) width); |
| assert(rb->Height == (GLuint) height); |
| rb->InternalFormat = internalFormat; |
| rb->_BaseFormat = baseFormat; |
| assert(rb->_BaseFormat != 0); |
| } |
| else { |
| /* Probably ran out of memory - clear the fields */ |
| rb->Width = 0; |
| rb->Height = 0; |
| rb->Format = MESA_FORMAT_NONE; |
| rb->InternalFormat = GL_NONE; |
| rb->_BaseFormat = GL_NONE; |
| rb->NumSamples = 0; |
| } |
| |
| /* |
| test_framebuffer_completeness(ctx, fb); |
| */ |
| /* XXX if this renderbuffer is attached anywhere, invalidate attachment |
| * points??? |
| */ |
| } |
| |
| |
| #if FEATURE_OES_EGL_image |
| void GLAPIENTRY |
| _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image) |
| { |
| struct gl_renderbuffer *rb; |
| GET_CURRENT_CONTEXT(ctx); |
| ASSERT_OUTSIDE_BEGIN_END(ctx); |
| |
| if (!ctx->Extensions.OES_EGL_image) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glEGLImageTargetRenderbufferStorageOES(unsupported)"); |
| return; |
| } |
| |
| if (target != GL_RENDERBUFFER) { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "EGLImageTargetRenderbufferStorageOES"); |
| return; |
| } |
| |
| rb = ctx->CurrentRenderbuffer; |
| if (!rb) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "EGLImageTargetRenderbufferStorageOES"); |
| return; |
| } |
| |
| FLUSH_VERTICES(ctx, _NEW_BUFFERS); |
| |
| ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image); |
| } |
| #endif |
| |
| |
| /** |
| * Helper function for _mesa_GetRenderbufferParameterivEXT() and |
| * _mesa_GetFramebufferAttachmentParameterivEXT() |
| * We have to be careful to respect the base format. For example, if a |
| * renderbuffer/texture was created with internalFormat=GL_RGB but the |
| * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE |
| * we need to return zero. |
| */ |
| static GLint |
| get_component_bits(GLenum pname, GLenum baseFormat, gl_format format) |
| { |
| switch (pname) { |
| case GL_RENDERBUFFER_RED_SIZE_EXT: |
| case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE: |
| case GL_RENDERBUFFER_GREEN_SIZE_EXT: |
| case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: |
| case GL_RENDERBUFFER_BLUE_SIZE_EXT: |
| case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: |
| if (baseFormat == GL_RGB || baseFormat == GL_RGBA) |
| return _mesa_get_format_bits(format, pname); |
| else |
| return 0; |
| case GL_RENDERBUFFER_ALPHA_SIZE_EXT: |
| case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: |
| if (baseFormat == GL_RGBA || baseFormat == GL_ALPHA) |
| return _mesa_get_format_bits(format, pname); |
| else |
| return 0; |
| case GL_RENDERBUFFER_DEPTH_SIZE_EXT: |
| case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: |
| if (baseFormat == GL_DEPTH_COMPONENT || baseFormat == GL_DEPTH_STENCIL) |
| return _mesa_get_format_bits(format, pname); |
| else |
| return 0; |
| case GL_RENDERBUFFER_STENCIL_SIZE_EXT: |
| case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: |
| if (baseFormat == GL_STENCIL_INDEX || baseFormat == GL_DEPTH_STENCIL) |
| return _mesa_get_format_bits(format, pname); |
| else |
| return 0; |
| default: |
| return 0; |
| } |
| } |
| |
| |
| |
| void GLAPIENTRY |
| _mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat, |
| GLsizei width, GLsizei height) |
| { |
| /* GL_ARB_fbo says calling this function is equivalent to calling |
| * glRenderbufferStorageMultisample() with samples=0. We pass in |
| * a token value here just for error reporting purposes. |
| */ |
| renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES); |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples, |
| GLenum internalFormat, |
| GLsizei width, GLsizei height) |
| { |
| renderbuffer_storage(target, internalFormat, width, height, samples); |
| } |
| |
| |
| /** |
| * OpenGL ES version of glRenderBufferStorage. |
| */ |
| void GLAPIENTRY |
| _es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat, |
| GLsizei width, GLsizei height) |
| { |
| switch (internalFormat) { |
| case GL_RGB565: |
| /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */ |
| /* choose a closest format */ |
| internalFormat = GL_RGB5; |
| break; |
| default: |
| break; |
| } |
| |
| renderbuffer_storage(target, internalFormat, width, height, 0); |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params) |
| { |
| struct gl_renderbuffer *rb; |
| GET_CURRENT_CONTEXT(ctx); |
| |
| ASSERT_OUTSIDE_BEGIN_END(ctx); |
| |
| if (target != GL_RENDERBUFFER_EXT) { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glGetRenderbufferParameterivEXT(target)"); |
| return; |
| } |
| |
| rb = ctx->CurrentRenderbuffer; |
| if (!rb) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetRenderbufferParameterivEXT"); |
| return; |
| } |
| |
| /* No need to flush here since we're just quering state which is |
| * not effected by rendering. |
| */ |
| |
| switch (pname) { |
| case GL_RENDERBUFFER_WIDTH_EXT: |
| *params = rb->Width; |
| return; |
| case GL_RENDERBUFFER_HEIGHT_EXT: |
| *params = rb->Height; |
| return; |
| case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT: |
| *params = rb->InternalFormat; |
| return; |
| case GL_RENDERBUFFER_RED_SIZE_EXT: |
| case GL_RENDERBUFFER_GREEN_SIZE_EXT: |
| case GL_RENDERBUFFER_BLUE_SIZE_EXT: |
| case GL_RENDERBUFFER_ALPHA_SIZE_EXT: |
| case GL_RENDERBUFFER_DEPTH_SIZE_EXT: |
| case GL_RENDERBUFFER_STENCIL_SIZE_EXT: |
| *params = get_component_bits(pname, rb->_BaseFormat, rb->Format); |
| break; |
| case GL_RENDERBUFFER_SAMPLES: |
| if (ctx->Extensions.ARB_framebuffer_object) { |
| *params = rb->NumSamples; |
| break; |
| } |
| /* fallthrough */ |
| 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; |
| } |
| |
| |
| /** |
| * Check if any of the attachments of the given framebuffer are textures |
| * (render to texture). Call ctx->Driver.RenderTexture() for such |
| * attachments. |
| */ |
| static void |
| check_begin_texture_render(GLcontext *ctx, struct gl_framebuffer *fb) |
| { |
| GLuint i; |
| ASSERT(ctx->Driver.RenderTexture); |
| |
| if (fb->Name == 0) |
| return; /* can't render to texture with winsys framebuffers */ |
| |
| for (i = 0; i < BUFFER_COUNT; i++) { |
| struct gl_renderbuffer_attachment *att = fb->Attachment + i; |
| struct gl_texture_object *texObj = att->Texture; |
| if (texObj |
| && texObj->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 (fb->Name == 0) |
| return; /* can't render to texture with winsys framebuffers */ |
| |
| if (ctx->Driver.FinishRenderTexture) { |
| GLuint i; |
| for (i = 0; i < BUFFER_COUNT; i++) { |
| struct gl_renderbuffer_attachment *att = fb->Attachment + i; |
| if (att->Texture && att->Renderbuffer) { |
| ctx->Driver.FinishRenderTexture(ctx, att); |
| } |
| } |
| } |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer) |
| { |
| struct gl_framebuffer *newDrawFb, *newReadFb; |
| struct gl_framebuffer *oldDrawFb, *oldReadFb; |
| GLboolean bindReadBuf, bindDrawBuf; |
| GET_CURRENT_CONTEXT(ctx); |
| |
| #ifdef DEBUG |
| if (ctx->Extensions.ARB_framebuffer_object) { |
| ASSERT(ctx->Extensions.EXT_framebuffer_object); |
| ASSERT(ctx->Extensions.EXT_framebuffer_blit); |
| } |
| #endif |
| |
| 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; |
| } |
| |
| if (framebuffer) { |
| /* Binding a user-created framebuffer object */ |
| newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer); |
| if (newDrawFb == &DummyFramebuffer) { |
| /* ID was reserved, but no real framebuffer object made yet */ |
| newDrawFb = NULL; |
| } |
| else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) { |
| /* All FBO IDs must be Gen'd */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)"); |
| return; |
| } |
| |
| if (!newDrawFb) { |
| /* create new framebuffer object */ |
| newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer); |
| if (!newDrawFb) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT"); |
| return; |
| } |
| _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb); |
| } |
| newReadFb = newDrawFb; |
| } |
| else { |
| /* Binding the window system framebuffer (which was originally set |
| * with MakeCurrent). |
| */ |
| newDrawFb = ctx->WinSysDrawBuffer; |
| newReadFb = ctx->WinSysReadBuffer; |
| } |
| |
| ASSERT(newDrawFb); |
| ASSERT(newDrawFb != &DummyFramebuffer); |
| |
| /* save pointers to current/old framebuffers */ |
| oldDrawFb = ctx->DrawBuffer; |
| oldReadFb = ctx->ReadBuffer; |
| |
| /* check if really changing bindings */ |
| if (oldDrawFb == newDrawFb) |
| bindDrawBuf = GL_FALSE; |
| if (oldReadFb == newReadFb) |
| bindReadBuf = GL_FALSE; |
| |
| /* |
| * OK, now bind the new Draw/Read framebuffers, if they're changing. |
| * |
| * We also check if we're beginning and/or ending render-to-texture. |
| * When a framebuffer with texture attachments is unbound, call |
| * ctx->Driver.FinishRenderTexture(). |
| * When a framebuffer with texture attachments is bound, call |
| * ctx->Driver.RenderTexture(). |
| * |
| * Note that if the ReadBuffer has texture attachments we don't consider |
| * that a render-to-texture case. |
| */ |
| if (bindReadBuf) { |
| FLUSH_VERTICES(ctx, _NEW_BUFFERS); |
| |
| /* check if old readbuffer was render-to-texture */ |
| check_end_texture_render(ctx, oldReadFb); |
| |
| _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb); |
| } |
| |
| if (bindDrawBuf) { |
| FLUSH_VERTICES(ctx, _NEW_BUFFERS); |
| |
| /* check if old read/draw buffers were render-to-texture */ |
| if (!bindReadBuf) |
| check_end_texture_render(ctx, oldReadFb); |
| |
| if (oldDrawFb != oldReadFb) |
| check_end_texture_render(ctx, oldDrawFb); |
| |
| /* check if newly bound framebuffer has any texture attachments */ |
| check_begin_texture_render(ctx, newDrawFb); |
| |
| _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb); |
| } |
| |
| if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) { |
| ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, 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 = _mesa_lookup_framebuffer(ctx, framebuffers[i]); |
| if (fb) { |
| ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]); |
| |
| /* check if deleting currently bound framebuffer object */ |
| if (ctx->Extensions.EXT_framebuffer_blit) { |
| /* separate draw/read binding points */ |
| if (fb == ctx->DrawBuffer) { |
| /* bind default */ |
| ASSERT(fb->RefCount >= 2); |
| _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0); |
| } |
| if (fb == ctx->ReadBuffer) { |
| /* bind default */ |
| ASSERT(fb->RefCount >= 2); |
| _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0); |
| } |
| } |
| else { |
| /* only one binding point for read/draw buffers */ |
| if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) { |
| /* 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_reference_framebuffer(&fb, NULL); |
| } |
| } |
| } |
| } |
| } |
| |
| |
| 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; |
| } |
| |
| /* No need to flush here */ |
| |
| if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) { |
| _mesa_test_framebuffer_completeness(ctx, buffer); |
| } |
| |
| return buffer->_Status; |
| } |
| |
| |
| |
| /** |
| * Common code called by glFramebufferTexture1D/2D/3DEXT(). |
| */ |
| static void |
| framebuffer_texture(GLcontext *ctx, const char *caller, 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; |
| GLboolean error = GL_FALSE; |
| |
| ASSERT_OUTSIDE_BEGIN_END(ctx); |
| |
| switch (target) { |
| case GL_READ_FRAMEBUFFER_EXT: |
| error = !ctx->Extensions.EXT_framebuffer_blit; |
| fb = ctx->ReadBuffer; |
| break; |
| case GL_DRAW_FRAMEBUFFER_EXT: |
| error = !ctx->Extensions.EXT_framebuffer_blit; |
| /* fall-through */ |
| case GL_FRAMEBUFFER_EXT: |
| fb = ctx->DrawBuffer; |
| break; |
| default: |
| error = GL_TRUE; |
| } |
| |
| if (error) { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glFramebufferTexture%sEXT(target=0x%x)", caller, target); |
| return; |
| } |
| |
| ASSERT(fb); |
| |
| /* check framebuffer binding */ |
| if (fb->Name == 0) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glFramebufferTexture%sEXT", caller); |
| return; |
| } |
| |
| |
| /* The textarget, level, and zoffset parameters are only validated if |
| * texture is non-zero. |
| */ |
| if (texture) { |
| GLboolean err = GL_TRUE; |
| |
| texObj = _mesa_lookup_texture(ctx, texture); |
| if (texObj != NULL) { |
| if (textarget == 0) { |
| /* XXX what's the purpose of this? */ |
| err = (texObj->Target != GL_TEXTURE_3D) && |
| (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) && |
| (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT); |
| } |
| else { |
| err = (texObj->Target == GL_TEXTURE_CUBE_MAP) |
| ? !IS_CUBE_FACE(textarget) |
| : (texObj->Target != textarget); |
| } |
| } |
| else { |
| /* can't render to a non-existant texture */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glFramebufferTexture%sEXT(non existant texture)", |
| caller); |
| return; |
| } |
| |
| if (err) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glFramebufferTexture%sEXT(texture target mismatch)", |
| caller); |
| return; |
| } |
| |
| if (texObj->Target == GL_TEXTURE_3D) { |
| const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1); |
| if (zoffset < 0 || zoffset >= maxSize) { |
| _mesa_error(ctx, GL_INVALID_VALUE, |
| "glFramebufferTexture%sEXT(zoffset)", caller); |
| return; |
| } |
| } |
| else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) || |
| (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) { |
| if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) { |
| _mesa_error(ctx, GL_INVALID_VALUE, |
| "glFramebufferTexture%sEXT(layer)", caller); |
| return; |
| } |
| } |
| |
| if ((level < 0) || |
| (level >= _mesa_max_texture_levels(ctx, texObj->Target))) { |
| _mesa_error(ctx, GL_INVALID_VALUE, |
| "glFramebufferTexture%sEXT(level)", caller); |
| return; |
| } |
| } |
| |
| att = _mesa_get_attachment(ctx, fb, attachment); |
| if (att == NULL) { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glFramebufferTexture%sEXT(attachment)", caller); |
| return; |
| } |
| |
| FLUSH_VERTICES(ctx, _NEW_BUFFERS); |
| |
| _glthread_LOCK_MUTEX(fb->Mutex); |
| if (texObj) { |
| _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget, |
| level, zoffset); |
| /* Set the render-to-texture flag. We'll check this flag in |
| * glTexImage() and friends to determine if we need to revalidate |
| * any FBOs that might be rendering into this texture. |
| * This flag never gets cleared since it's non-trivial to determine |
| * when all FBOs might be done rendering to this texture. That's OK |
| * though since it's uncommon to render to a texture then repeatedly |
| * call glTexImage() to change images in the texture. |
| */ |
| texObj->_RenderToTexture = GL_TRUE; |
| } |
| else { |
| _mesa_remove_attachment(ctx, att); |
| } |
| |
| invalidate_framebuffer(fb); |
| |
| _glthread_UNLOCK_MUTEX(fb->Mutex); |
| } |
| |
| |
| |
| void GLAPIENTRY |
| _mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment, |
| GLenum textarget, GLuint texture, GLint level) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| |
| if ((texture != 0) && (textarget != GL_TEXTURE_1D)) { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glFramebufferTexture1DEXT(textarget)"); |
| return; |
| } |
| |
| framebuffer_texture(ctx, "1D", target, attachment, textarget, texture, |
| level, 0); |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment, |
| GLenum textarget, GLuint texture, GLint level) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| |
| if ((texture != 0) && |
| (textarget != GL_TEXTURE_2D) && |
| (textarget != GL_TEXTURE_RECTANGLE_ARB) && |
| (!IS_CUBE_FACE(textarget))) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glFramebufferTexture2DEXT(textarget=0x%x)", textarget); |
| return; |
| } |
| |
| framebuffer_texture(ctx, "2D", target, attachment, textarget, texture, |
| level, 0); |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment, |
| GLenum textarget, GLuint texture, |
| GLint level, GLint zoffset) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| |
| if ((texture != 0) && (textarget != GL_TEXTURE_3D)) { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glFramebufferTexture3DEXT(textarget)"); |
| return; |
| } |
| |
| framebuffer_texture(ctx, "3D", target, attachment, textarget, texture, |
| level, zoffset); |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment, |
| GLuint texture, GLint level, GLint layer) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| |
| framebuffer_texture(ctx, "Layer", target, attachment, 0, texture, |
| level, layer); |
| } |
| |
| |
| 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(invalid attachment %s)", |
| _mesa_lookup_enum_by_nr(attachment)); |
| return; |
| } |
| |
| if (renderbuffer) { |
| rb = _mesa_lookup_renderbuffer(ctx, renderbuffer); |
| if (!rb) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glFramebufferRenderbufferEXT(non-existant" |
| " renderbuffer %u)", renderbuffer); |
| return; |
| } |
| } |
| else { |
| /* remove renderbuffer attachment */ |
| rb = NULL; |
| } |
| |
| if (attachment == GL_DEPTH_STENCIL_ATTACHMENT && |
| rb && rb->Format != MESA_FORMAT_NONE) { |
| /* make sure the renderbuffer is a depth/stencil format */ |
| const GLenum baseFormat = _mesa_get_format_base_format(rb->Format); |
| if (baseFormat != GL_DEPTH_STENCIL) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glFramebufferRenderbufferEXT(renderbuffer" |
| " is not DEPTH_STENCIL format)"); |
| return; |
| } |
| } |
| |
| |
| 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) { |
| /* the default / window-system FBO */ |
| att = _mesa_get_fb0_attachment(ctx, buffer, attachment); |
| } |
| else { |
| /* user-created framebuffer FBO */ |
| att = _mesa_get_attachment(ctx, buffer, attachment); |
| } |
| |
| if (att == NULL) { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glGetFramebufferAttachmentParameterivEXT(attachment)"); |
| return; |
| } |
| |
| if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) { |
| /* the depth and stencil attachments must point to the same buffer */ |
| const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt; |
| depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT); |
| stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT); |
| if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL" |
| " attachments differ)"); |
| return; |
| } |
| } |
| |
| /* No need to flush here */ |
| |
| 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) { |
| if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) { |
| *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace; |
| } |
| else { |
| *params = 0; |
| } |
| } |
| else { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glGetFramebufferAttachmentParameterivEXT(pname)"); |
| } |
| return; |
| case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT: |
| if (att->Type == GL_TEXTURE) { |
| if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) { |
| *params = att->Zoffset; |
| } |
| else { |
| *params = 0; |
| } |
| } |
| else { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glGetFramebufferAttachmentParameterivEXT(pname)"); |
| } |
| return; |
| case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING: |
| if (!ctx->Extensions.ARB_framebuffer_object) { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glGetFramebufferAttachmentParameterivEXT(pname)"); |
| } |
| else { |
| *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format); |
| } |
| return; |
| case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE: |
| if (!ctx->Extensions.ARB_framebuffer_object) { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glGetFramebufferAttachmentParameterivEXT(pname)"); |
| return; |
| } |
| else { |
| gl_format format = att->Renderbuffer->Format; |
| if (format == MESA_FORMAT_CI8 || format == MESA_FORMAT_S8) { |
| /* special cases */ |
| *params = GL_INDEX; |
| } |
| else { |
| *params = _mesa_get_format_datatype(format); |
| } |
| } |
| return; |
| case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE: |
| case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: |
| case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: |
| case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: |
| case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: |
| case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: |
| if (!ctx->Extensions.ARB_framebuffer_object) { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glGetFramebufferAttachmentParameterivEXT(pname)"); |
| } |
| else if (att->Texture) { |
| const struct gl_texture_image *texImage = |
| _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target, |
| att->TextureLevel); |
| if (texImage) { |
| *params = get_component_bits(pname, texImage->_BaseFormat, |
| texImage->TexFormat); |
| } |
| else { |
| *params = 0; |
| } |
| } |
| else if (att->Renderbuffer) { |
| *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat, |
| att->Renderbuffer->Format); |
| } |
| else { |
| *params = 0; |
| } |
| return; |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glGetFramebufferAttachmentParameterivEXT(pname)"); |
| return; |
| } |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_GenerateMipmapEXT(GLenum target) |
| { |
| 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; |
| } |
| |
| texObj = _mesa_get_current_tex_object(ctx, target); |
| |
| if (texObj->BaseLevel >= texObj->MaxLevel) { |
| /* nothing to do */ |
| return; |
| } |
| |
| _mesa_lock_texture(ctx, texObj); |
| if (target == GL_TEXTURE_CUBE_MAP) { |
| GLuint face; |
| for (face = 0; face < 6; face++) |
| ctx->Driver.GenerateMipmap(ctx, |
| GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face, |
| texObj); |
| } |
| else { |
| ctx->Driver.GenerateMipmap(ctx, target, texObj); |
| } |
| _mesa_unlock_texture(ctx, texObj); |
| } |
| |
| |
| #if FEATURE_EXT_framebuffer_blit |
| |
| static const struct gl_renderbuffer_attachment * |
| find_attachment(const struct gl_framebuffer *fb, const struct gl_renderbuffer *rb) |
| { |
| GLuint i; |
| for (i = 0; i < Elements(fb->Attachment); i++) { |
| if (fb->Attachment[i].Renderbuffer == rb) |
| return &fb->Attachment[i]; |
| } |
| return NULL; |
| } |
| |
| |
| |
| /** |
| * Blit rectangular region, optionally from one framebuffer to another. |
| * |
| * Note, if the src buffer is multisampled and the dest is not, this is |
| * when the samples must be resolved to a single color. |
| */ |
| void GLAPIENTRY |
| _mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, |
| GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, |
| GLbitfield mask, GLenum filter) |
| { |
| const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT | |
| GL_DEPTH_BUFFER_BIT | |
| GL_STENCIL_BUFFER_BIT); |
| const struct gl_framebuffer *readFb, *drawFb; |
| const struct gl_renderbuffer *colorReadRb, *colorDrawRb; |
| GET_CURRENT_CONTEXT(ctx); |
| |
| ASSERT_OUTSIDE_BEGIN_END(ctx); |
| FLUSH_VERTICES(ctx, _NEW_BUFFERS); |
| |
| if (ctx->NewState) { |
| _mesa_update_state(ctx); |
| } |
| |
| readFb = ctx->ReadBuffer; |
| drawFb = ctx->DrawBuffer; |
| |
| if (!readFb || !drawFb) { |
| /* This will normally never happen but someday we may want to |
| * support MakeCurrent() with no drawables. |
| */ |
| return; |
| } |
| |
| /* check for complete framebuffers */ |
| if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT || |
| readFb->_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 & ~legalMaskBits) { |
| _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; |
| } |
| |
| /* get color read/draw renderbuffers */ |
| if (mask & GL_COLOR_BUFFER_BIT) { |
| colorReadRb = readFb->_ColorReadBuffer; |
| colorDrawRb = drawFb->_ColorDrawBuffers[0]; |
| } |
| else { |
| colorReadRb = colorDrawRb = NULL; |
| } |
| |
| if (mask & GL_STENCIL_BUFFER_BIT) { |
| struct gl_renderbuffer *readRb = readFb->_StencilBuffer; |
| struct gl_renderbuffer *drawRb = drawFb->_StencilBuffer; |
| if (!readRb || |
| !drawRb || |
| _mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) != |
| _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebufferEXT(stencil buffer size mismatch"); |
| return; |
| } |
| } |
| |
| if (mask & GL_DEPTH_BUFFER_BIT) { |
| struct gl_renderbuffer *readRb = readFb->_DepthBuffer; |
| struct gl_renderbuffer *drawRb = drawFb->_DepthBuffer; |
| if (!readRb || |
| !drawRb || |
| _mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) != |
| _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebufferEXT(depth buffer size mismatch"); |
| return; |
| } |
| } |
| |
| if (readFb->Visual.samples > 0 && |
| drawFb->Visual.samples > 0 && |
| readFb->Visual.samples != drawFb->Visual.samples) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebufferEXT(mismatched samples"); |
| return; |
| } |
| |
| /* extra checks for multisample copies... */ |
| if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) { |
| /* src and dest region sizes must be the same */ |
| if (srcX1 - srcX0 != dstX1 - dstX0 || |
| srcY1 - srcY0 != dstY1 - dstY0) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebufferEXT(bad src/dst multisample region sizes"); |
| return; |
| } |
| |
| /* color formats must match */ |
| if (colorReadRb && |
| colorDrawRb && |
| colorReadRb->Format != colorDrawRb->Format) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebufferEXT(bad src/dst multisample pixel formats"); |
| return; |
| } |
| } |
| |
| if (!ctx->Extensions.EXT_framebuffer_blit) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT"); |
| return; |
| } |
| |
| /* Debug code */ |
| if (DEBUG_BLIT) { |
| printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d," |
| " 0x%x, 0x%x)\n", |
| srcX0, srcY0, srcX1, srcY1, |
| dstX0, dstY0, dstX1, dstY1, |
| mask, filter); |
| if (colorReadRb) { |
| const struct gl_renderbuffer_attachment *att; |
| |
| att = find_attachment(readFb, colorReadRb); |
| printf(" Src FBO %u RB %u (%dx%d) ", |
| readFb->Name, colorReadRb->Name, |
| colorReadRb->Width, colorReadRb->Height); |
| if (att && att->Texture) { |
| printf("Tex %u tgt 0x%x level %u face %u", |
| att->Texture->Name, |
| att->Texture->Target, |
| att->TextureLevel, |
| att->CubeMapFace); |
| } |
| printf("\n"); |
| |
| att = find_attachment(drawFb, colorDrawRb); |
| printf(" Dst FBO %u RB %u (%dx%d) ", |
| drawFb->Name, colorDrawRb->Name, |
| colorDrawRb->Width, colorDrawRb->Height); |
| if (att && att->Texture) { |
| printf("Tex %u tgt 0x%x level %u face %u", |
| att->Texture->Name, |
| att->Texture->Target, |
| att->TextureLevel, |
| att->CubeMapFace); |
| } |
| printf("\n"); |
| } |
| } |
| |
| ASSERT(ctx->Driver.BlitFramebuffer); |
| ctx->Driver.BlitFramebuffer(ctx, |
| srcX0, srcY0, srcX1, srcY1, |
| dstX0, dstY0, dstX1, dstY1, |
| mask, filter); |
| } |
| #endif /* FEATURE_EXT_framebuffer_blit */ |