| /* |
| * Mesa 3-D graphics library |
| * |
| * 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 |
| * THE AUTHORS OR COPYRIGHT HOLDERS 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 <stdbool.h> |
| |
| #include "buffers.h" |
| #include "context.h" |
| #include "enums.h" |
| #include "fbobject.h" |
| #include "formats.h" |
| #include "framebuffer.h" |
| #include "glformats.h" |
| #include "hash.h" |
| #include "macros.h" |
| #include "multisample.h" |
| #include "mtypes.h" |
| #include "renderbuffer.h" |
| #include "state.h" |
| #include "teximage.h" |
| #include "texobj.h" |
| |
| |
| /** 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; |
| |
| /* We bind this framebuffer when applications pass a NULL |
| * drawable/surface in make current. */ |
| static struct gl_framebuffer IncompleteFramebuffer; |
| |
| |
| static void |
| delete_dummy_renderbuffer(struct gl_context *ctx, struct gl_renderbuffer *rb) |
| { |
| /* no op */ |
| } |
| |
| static void |
| delete_dummy_framebuffer(struct gl_framebuffer *fb) |
| { |
| /* no op */ |
| } |
| |
| |
| void |
| _mesa_init_fbobjects(struct gl_context *ctx) |
| { |
| _glthread_INIT_MUTEX(DummyFramebuffer.Mutex); |
| _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex); |
| _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex); |
| DummyFramebuffer.Delete = delete_dummy_framebuffer; |
| DummyRenderbuffer.Delete = delete_dummy_renderbuffer; |
| IncompleteFramebuffer.Delete = delete_dummy_framebuffer; |
| } |
| |
| struct gl_framebuffer * |
| _mesa_get_incomplete_framebuffer(void) |
| { |
| return &IncompleteFramebuffer; |
| } |
| |
| /** |
| * Helper routine for getting a gl_renderbuffer. |
| */ |
| struct gl_renderbuffer * |
| _mesa_lookup_renderbuffer(struct gl_context *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(struct gl_context *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" */ |
| } |
| |
| |
| /** |
| * Return the gl_framebuffer object which corresponds to the given |
| * framebuffer target, such as GL_DRAW_FRAMEBUFFER. |
| * Check support for GL_EXT_framebuffer_blit to determine if certain |
| * targets are legal. |
| * \return gl_framebuffer pointer or NULL if target is illegal |
| */ |
| static struct gl_framebuffer * |
| get_framebuffer_target(struct gl_context *ctx, GLenum target) |
| { |
| bool have_fb_blit = _mesa_is_gles3(ctx) || _mesa_is_desktop_gl(ctx); |
| switch (target) { |
| case GL_DRAW_FRAMEBUFFER: |
| return have_fb_blit ? ctx->DrawBuffer : NULL; |
| case GL_READ_FRAMEBUFFER: |
| return have_fb_blit ? ctx->ReadBuffer : NULL; |
| case GL_FRAMEBUFFER_EXT: |
| return ctx->DrawBuffer; |
| default: |
| return NULL; |
| } |
| } |
| |
| |
| /** |
| * 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(struct gl_context *ctx, struct gl_framebuffer *fb, |
| GLenum attachment) |
| { |
| GLuint i; |
| |
| assert(_mesa_is_user_fbo(fb)); |
| |
| 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: |
| /* Only OpenGL ES 1.x forbids color attachments other than |
| * GL_COLOR_ATTACHMENT0. For all other APIs the limit set by the |
| * hardware is used. |
| */ |
| i = attachment - GL_COLOR_ATTACHMENT0_EXT; |
| if (i >= ctx->Const.MaxColorAttachments |
| || (i > 0 && ctx->API == API_OPENGLES)) { |
| return NULL; |
| } |
| return &fb->Attachment[BUFFER_COLOR0 + i]; |
| case GL_DEPTH_STENCIL_ATTACHMENT: |
| if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx)) |
| return NULL; |
| /* fall-through */ |
| case GL_DEPTH_ATTACHMENT_EXT: |
| return &fb->Attachment[BUFFER_DEPTH]; |
| 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(struct gl_context *ctx, struct gl_framebuffer *fb, |
| GLenum attachment) |
| { |
| assert(_mesa_is_winsys_fbo(fb)); |
| |
| if (_mesa_is_gles3(ctx)) { |
| assert(attachment == GL_BACK || |
| attachment == GL_DEPTH || |
| attachment == GL_STENCIL); |
| switch (attachment) { |
| case GL_BACK: |
| /* Since there is no stereo rendering in ES 3.0, only return the |
| * LEFT bits. |
| */ |
| if (ctx->DrawBuffer->Visual.doubleBufferMode) |
| return &fb->Attachment[BUFFER_BACK_LEFT]; |
| return &fb->Attachment[BUFFER_FRONT_LEFT]; |
| case GL_DEPTH: |
| return &fb->Attachment[BUFFER_DEPTH]; |
| case GL_STENCIL: |
| return &fb->Attachment[BUFFER_STENCIL]; |
| } |
| } |
| |
| 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; |
| |
| /* Page 336 (page 352 of the PDF) of the OpenGL 3.0 spec says: |
| * |
| * "If the default framebuffer is bound to target, then attachment must |
| * be one of FRONT LEFT, FRONT RIGHT, BACK LEFT, BACK RIGHT, or AUXi, |
| * identifying a color buffer; DEPTH, identifying the depth buffer; or |
| * STENCIL, identifying the stencil buffer." |
| * |
| * Revision #34 of the ARB_framebuffer_object spec has essentially the same |
| * language. However, revision #33 of the ARB_framebuffer_object spec |
| * says: |
| * |
| * "If the default framebuffer is bound to <target>, then <attachment> |
| * must be one of FRONT_LEFT, FRONT_RIGHT, BACK_LEFT, BACK_RIGHT, AUXi, |
| * DEPTH_BUFFER, or STENCIL_BUFFER, identifying a color buffer, the |
| * depth buffer, or the stencil buffer, and <pname> may be |
| * FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or |
| * FRAMEBUFFER_ATTACHMENT_OBJECT_NAME." |
| * |
| * The enum values for DEPTH_BUFFER and STENCIL_BUFFER have been removed |
| * from glext.h, so shipping apps should not use those values. |
| * |
| * Note that neither EXT_framebuffer_object nor OES_framebuffer_object |
| * support queries of the window system FBO. |
| */ |
| case GL_DEPTH: |
| return &fb->Attachment[BUFFER_DEPTH]; |
| case GL_STENCIL: |
| 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(struct gl_context *ctx, |
| struct gl_renderbuffer_attachment *att) |
| { |
| struct gl_renderbuffer *rb = att->Renderbuffer; |
| |
| /* tell driver that we're done rendering to this texture. */ |
| if (rb && rb->NeedsFinishRenderTexture) |
| ctx->Driver.FinishRenderTexture(ctx, rb); |
| |
| if (att->Type == GL_TEXTURE) { |
| ASSERT(att->Texture); |
| _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; |
| } |
| |
| /** |
| * Verify a couple error conditions that will lead to an incomplete FBO and |
| * may cause problems for the driver's RenderTexture path. |
| */ |
| static bool |
| driver_RenderTexture_is_safe(const struct gl_renderbuffer_attachment *att) |
| { |
| const struct gl_texture_image *const texImage = |
| att->Texture->Image[att->CubeMapFace][att->TextureLevel]; |
| |
| if (texImage->Width == 0 || texImage->Height == 0 || texImage->Depth == 0) |
| return false; |
| |
| if ((texImage->TexObject->Target == GL_TEXTURE_1D_ARRAY |
| && att->Zoffset >= texImage->Height) |
| || (texImage->TexObject->Target != GL_TEXTURE_1D_ARRAY |
| && att->Zoffset >= texImage->Depth)) |
| return false; |
| |
| return true; |
| } |
| |
| /** |
| * Create a renderbuffer which will be set up by the driver to wrap the |
| * texture image slice. |
| * |
| * By using a gl_renderbuffer (like user-allocated renderbuffers), drivers get |
| * to share most of their framebuffer rendering code between winsys, |
| * renderbuffer, and texture attachments. |
| * |
| * The allocated renderbuffer uses a non-zero Name so that drivers can check |
| * it for determining vertical orientation, but we use ~0 to make it fairly |
| * unambiguous with actual user (non-texture) renderbuffers. |
| */ |
| void |
| _mesa_update_texture_renderbuffer(struct gl_context *ctx, |
| struct gl_framebuffer *fb, |
| struct gl_renderbuffer_attachment *att) |
| { |
| struct gl_texture_image *texImage; |
| struct gl_renderbuffer *rb; |
| |
| texImage = att->Texture->Image[att->CubeMapFace][att->TextureLevel]; |
| |
| rb = att->Renderbuffer; |
| if (!rb) { |
| rb = ctx->Driver.NewRenderbuffer(ctx, ~0); |
| if (!rb) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glFramebufferTexture()"); |
| return; |
| } |
| _mesa_reference_renderbuffer(&att->Renderbuffer, rb); |
| |
| /* This can't get called on a texture renderbuffer, so set it to NULL |
| * for clarity compared to user renderbuffers. |
| */ |
| rb->AllocStorage = NULL; |
| |
| rb->NeedsFinishRenderTexture = ctx->Driver.FinishRenderTexture != NULL; |
| } |
| |
| if (!texImage) |
| return; |
| |
| rb->_BaseFormat = texImage->_BaseFormat; |
| rb->Format = texImage->TexFormat; |
| rb->InternalFormat = texImage->InternalFormat; |
| rb->Width = texImage->Width2; |
| rb->Height = texImage->Height2; |
| rb->Depth = texImage->Depth2; |
| rb->NumSamples = texImage->NumSamples; |
| rb->TexImage = texImage; |
| |
| if (driver_RenderTexture_is_safe(att)) |
| ctx->Driver.RenderTexture(ctx, fb, att); |
| } |
| |
| /** |
| * Bind a texture object to an attachment point. |
| * The previous binding, if any, will be removed first. |
| */ |
| void |
| _mesa_set_texture_attachment(struct gl_context *ctx, |
| struct gl_framebuffer *fb, |
| struct gl_renderbuffer_attachment *att, |
| struct gl_texture_object *texObj, |
| GLenum texTarget, GLuint level, GLuint zoffset, |
| GLboolean layered) |
| { |
| struct gl_renderbuffer *rb = att->Renderbuffer; |
| |
| if (rb && rb->NeedsFinishRenderTexture) |
| ctx->Driver.FinishRenderTexture(ctx, rb); |
| |
| 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; |
| assert(!att->Texture); |
| _mesa_reference_texobj(&att->Texture, texObj); |
| } |
| invalidate_framebuffer(fb); |
| |
| /* always update these fields */ |
| att->TextureLevel = level; |
| att->CubeMapFace = _mesa_tex_target_to_face(texTarget); |
| att->Zoffset = zoffset; |
| att->Layered = layered; |
| att->Complete = GL_FALSE; |
| |
| _mesa_update_texture_renderbuffer(ctx, fb, att); |
| } |
| |
| |
| /** |
| * Bind a renderbuffer to an attachment point. |
| * The previous binding, if any, will be removed first. |
| */ |
| void |
| _mesa_set_renderbuffer_attachment(struct gl_context *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(struct gl_context *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); |
| } |
| rb->AttachedAnytime = GL_TRUE; |
| } |
| else { |
| _mesa_remove_attachment(ctx, att); |
| } |
| |
| invalidate_framebuffer(fb); |
| |
| _glthread_UNLOCK_MUTEX(fb->Mutex); |
| } |
| |
| |
| /** |
| * Fallback for ctx->Driver.ValidateFramebuffer() |
| * Check if the renderbuffer's formats are supported by the software |
| * renderer. |
| * Drivers should probably override this. |
| */ |
| void |
| _mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb) |
| { |
| gl_buffer_index buf; |
| for (buf = 0; buf < BUFFER_COUNT; buf++) { |
| const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer; |
| if (rb) { |
| switch (rb->_BaseFormat) { |
| case GL_ALPHA: |
| case GL_LUMINANCE_ALPHA: |
| case GL_LUMINANCE: |
| case GL_INTENSITY: |
| case GL_RED: |
| case GL_RG: |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED; |
| return; |
| |
| default: |
| switch (rb->Format) { |
| /* XXX This list is likely incomplete. */ |
| case MESA_FORMAT_RGB9_E5_FLOAT: |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED; |
| return; |
| default:; |
| /* render buffer format is supported by software rendering */ |
| } |
| } |
| } |
| } |
| } |
| |
| |
| /** |
| * Return true if the framebuffer has a combined depth/stencil |
| * renderbuffer attached. |
| */ |
| GLboolean |
| _mesa_has_depthstencil_combined(const struct gl_framebuffer *fb) |
| { |
| const struct gl_renderbuffer_attachment *depth = |
| &fb->Attachment[BUFFER_DEPTH]; |
| const struct gl_renderbuffer_attachment *stencil = |
| &fb->Attachment[BUFFER_STENCIL]; |
| |
| if (depth->Type == stencil->Type) { |
| if (depth->Type == GL_RENDERBUFFER_EXT && |
| depth->Renderbuffer == stencil->Renderbuffer) |
| return GL_TRUE; |
| |
| if (depth->Type == GL_TEXTURE && |
| depth->Texture == stencil->Texture) |
| return GL_TRUE; |
| } |
| |
| return GL_FALSE; |
| } |
| |
| |
| /** |
| * For debug only. |
| */ |
| static void |
| att_incomplete(const char *msg) |
| { |
| if (MESA_DEBUG_FLAGS & DEBUG_INCOMPLETE_FBO) { |
| _mesa_debug(NULL, "attachment incomplete: %s\n", msg); |
| } |
| } |
| |
| |
| /** |
| * For debug only. |
| */ |
| static void |
| fbo_incomplete(struct gl_context *ctx, const char *msg, int index) |
| { |
| static GLuint msg_id; |
| |
| _mesa_gl_debug(ctx, &msg_id, |
| MESA_DEBUG_TYPE_OTHER, |
| MESA_DEBUG_SEVERITY_MEDIUM, |
| "FBO incomplete: %s [%d]\n", msg, index); |
| |
| if (MESA_DEBUG_FLAGS & DEBUG_INCOMPLETE_FBO) { |
| _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index); |
| } |
| } |
| |
| |
| /** |
| * Is the given base format a legal format for a color renderbuffer? |
| */ |
| GLboolean |
| _mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat) |
| { |
| switch (baseFormat) { |
| case GL_RGB: |
| case GL_RGBA: |
| return GL_TRUE; |
| case GL_LUMINANCE: |
| case GL_LUMINANCE_ALPHA: |
| case GL_INTENSITY: |
| case GL_ALPHA: |
| return ctx->API == API_OPENGL_COMPAT && |
| ctx->Extensions.ARB_framebuffer_object; |
| case GL_RED: |
| case GL_RG: |
| return ctx->Extensions.ARB_texture_rg; |
| default: |
| return GL_FALSE; |
| } |
| } |
| |
| |
| /** |
| * Is the given base format a legal format for a color renderbuffer? |
| */ |
| static GLboolean |
| is_format_color_renderable(const struct gl_context *ctx, mesa_format format, GLenum internalFormat) |
| { |
| const GLenum baseFormat = |
| _mesa_get_format_base_format(format); |
| GLboolean valid; |
| |
| valid = _mesa_is_legal_color_format(ctx, baseFormat); |
| if (!valid || _mesa_is_desktop_gl(ctx)) { |
| return valid; |
| } |
| |
| /* Reject additional cases for GLES */ |
| switch (internalFormat) { |
| case GL_RGBA8_SNORM: |
| case GL_RGB32F: |
| case GL_RGB32I: |
| case GL_RGB32UI: |
| case GL_RGB16F: |
| case GL_RGB16I: |
| case GL_RGB16UI: |
| case GL_RGB8_SNORM: |
| case GL_RGB8I: |
| case GL_RGB8UI: |
| case GL_SRGB8: |
| case GL_RGB9_E5: |
| case GL_RG8_SNORM: |
| case GL_R8_SNORM: |
| return GL_FALSE; |
| default: |
| break; |
| } |
| |
| if (format == MESA_FORMAT_ARGB2101010 && internalFormat != GL_RGB10_A2) { |
| return GL_FALSE; |
| } |
| |
| return GL_TRUE; |
| } |
| |
| |
| /** |
| * Is the given base format a legal format for a depth/stencil renderbuffer? |
| */ |
| static GLboolean |
| is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat) |
| { |
| switch (baseFormat) { |
| case GL_DEPTH_COMPONENT: |
| case GL_DEPTH_STENCIL_EXT: |
| return GL_TRUE; |
| default: |
| return GL_FALSE; |
| } |
| } |
| |
| |
| /** |
| * 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 struct gl_context *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"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| |
| switch (texObj->Target) { |
| case GL_TEXTURE_3D: |
| if (att->Zoffset >= texImage->Depth) { |
| att_incomplete("bad z offset"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| break; |
| case GL_TEXTURE_1D_ARRAY: |
| if (att->Zoffset >= texImage->Height) { |
| att_incomplete("bad 1D-array layer"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| break; |
| case GL_TEXTURE_2D_ARRAY: |
| if (att->Zoffset >= texImage->Depth) { |
| att_incomplete("bad 2D-array layer"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| break; |
| case GL_TEXTURE_CUBE_MAP_ARRAY: |
| if (att->Zoffset >= texImage->Depth) { |
| att_incomplete("bad cube-array layer"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| break; |
| } |
| |
| baseFormat = _mesa_get_format_base_format(texImage->TexFormat); |
| |
| if (format == GL_COLOR) { |
| if (!_mesa_is_legal_color_format(ctx, baseFormat)) { |
| 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.ARB_depth_texture && |
| baseFormat == GL_DEPTH_STENCIL) { |
| /* OK */ |
| } |
| else { |
| att->Complete = GL_FALSE; |
| att_incomplete("bad depth format"); |
| return; |
| } |
| } |
| else { |
| ASSERT(format == GL_STENCIL); |
| if (ctx->Extensions.ARB_depth_texture && |
| baseFormat == GL_DEPTH_STENCIL) { |
| /* 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 (!_mesa_is_legal_color_format(ctx, baseFormat)) { |
| att_incomplete("bad renderbuffer color format"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| } |
| else if (format == GL_DEPTH) { |
| if (baseFormat == GL_DEPTH_COMPONENT) { |
| /* OK */ |
| } |
| else if (baseFormat == GL_DEPTH_STENCIL) { |
| /* OK */ |
| } |
| else { |
| att_incomplete("bad renderbuffer depth format"); |
| att->Complete = GL_FALSE; |
| return; |
| } |
| } |
| else { |
| assert(format == GL_STENCIL); |
| if (baseFormat == GL_STENCIL_INDEX || |
| baseFormat == GL_DEPTH_STENCIL) { |
| /* 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(struct gl_context *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 fixedSampleLocations = -1; |
| GLint i; |
| GLuint j; |
| /* Covers max_layer_count, is_layered, and layer_tex_target */ |
| bool layer_info_valid = false; |
| GLuint max_layer_count = 0, att_layer_count; |
| bool is_layered = false; |
| GLenum layer_tex_target = 0; |
| |
| assert(_mesa_is_user_fbo(fb)); |
| |
| /* we're changing framebuffer fields here */ |
| FLUSH_VERTICES(ctx, _NEW_BUFFERS); |
| |
| numImages = 0; |
| fb->Width = 0; |
| fb->Height = 0; |
| fb->_AllColorBuffersFixedPoint = GL_TRUE; |
| fb->_HasSNormOrFloatColorBuffer = GL_FALSE; |
| |
| /* 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; |
| mesa_format attFormat; |
| GLenum att_tex_target = GL_NONE; |
| |
| /* |
| * 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(ctx, "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(ctx, "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(ctx, "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->Renderbuffer->TexImage; |
| att_tex_target = att->Texture->Target; |
| minWidth = MIN2(minWidth, texImg->Width); |
| maxWidth = MAX2(maxWidth, texImg->Width); |
| minHeight = MIN2(minHeight, texImg->Height); |
| maxHeight = MAX2(maxHeight, texImg->Height); |
| f = texImg->_BaseFormat; |
| attFormat = texImg->TexFormat; |
| numImages++; |
| |
| if (!is_format_color_renderable(ctx, attFormat, texImg->InternalFormat) && |
| !is_legal_depth_format(ctx, f)) { |
| fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT; |
| fbo_incomplete(ctx, "texture attachment incomplete", -1); |
| return; |
| } |
| |
| if (numSamples < 0) |
| numSamples = texImg->NumSamples; |
| else if (numSamples != texImg->NumSamples) { |
| fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE; |
| fbo_incomplete(ctx, "inconsistent sample count", -1); |
| return; |
| } |
| |
| if (fixedSampleLocations < 0) |
| fixedSampleLocations = texImg->FixedSampleLocations; |
| else if (fixedSampleLocations != texImg->FixedSampleLocations) { |
| fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE; |
| fbo_incomplete(ctx, "inconsistent fixed sample locations", -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; |
| attFormat = att->Renderbuffer->Format; |
| numImages++; |
| |
| if (numSamples < 0) |
| numSamples = att->Renderbuffer->NumSamples; |
| else if (numSamples != att->Renderbuffer->NumSamples) { |
| fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE; |
| fbo_incomplete(ctx, "inconsistent sample count", -1); |
| return; |
| } |
| |
| /* RENDERBUFFER has fixedSampleLocations implicitly true */ |
| if (fixedSampleLocations < 0) |
| fixedSampleLocations = GL_TRUE; |
| else if (fixedSampleLocations != GL_TRUE) { |
| fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE; |
| fbo_incomplete(ctx, "inconsistent fixed sample locations", -1); |
| return; |
| } |
| } |
| else { |
| assert(att->Type == GL_NONE); |
| continue; |
| } |
| |
| /* check if integer color */ |
| fb->_IntegerColor = _mesa_is_format_integer_color(attFormat); |
| |
| /* Update _AllColorBuffersFixedPoint and _HasSNormOrFloatColorBuffer. */ |
| if (i >= 0) { |
| GLenum type = _mesa_get_format_datatype(attFormat); |
| |
| fb->_AllColorBuffersFixedPoint = |
| fb->_AllColorBuffersFixedPoint && |
| (type == GL_UNSIGNED_NORMALIZED || type == GL_SIGNED_NORMALIZED); |
| |
| fb->_HasSNormOrFloatColorBuffer = |
| fb->_HasSNormOrFloatColorBuffer || |
| type == GL_SIGNED_NORMALIZED || type == GL_FLOAT; |
| } |
| |
| /* Error-check width, height, format */ |
| if (numImages == 1) { |
| /* save format */ |
| 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(ctx, "width or height mismatch", -1); |
| return; |
| } |
| /* check that all color buffers are the same format */ |
| if (intFormat != GL_NONE && f != intFormat) { |
| fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT; |
| fbo_incomplete(ctx, "format mismatch", -1); |
| return; |
| } |
| } |
| } |
| |
| /* Check that the format is valid. (MESA_FORMAT_NONE means unsupported) |
| */ |
| if (att->Type == GL_RENDERBUFFER && |
| att->Renderbuffer->Format == MESA_FORMAT_NONE) { |
| fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED; |
| fbo_incomplete(ctx, "unsupported renderbuffer format", i); |
| return; |
| } |
| |
| /* Check that layered rendering is consistent. */ |
| if (att->Layered) { |
| if (att_tex_target == GL_TEXTURE_CUBE_MAP) |
| att_layer_count = 6; |
| else |
| att_layer_count = att->Renderbuffer->Depth; |
| } else { |
| att_layer_count = 0; |
| } |
| if (!layer_info_valid) { |
| is_layered = att->Layered; |
| max_layer_count = att_layer_count; |
| layer_tex_target = att_tex_target; |
| layer_info_valid = true; |
| } else if (max_layer_count > 0 && layer_tex_target != att_tex_target) { |
| fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS; |
| fbo_incomplete(ctx, "layered framebuffer has mismatched targets", i); |
| return; |
| } else if (is_layered != att->Layered) { |
| fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS; |
| fbo_incomplete(ctx, "framebuffer attachment layer mode is inconsistent", i); |
| return; |
| } else if (att_layer_count > max_layer_count) { |
| max_layer_count = att_layer_count; |
| } |
| } |
| |
| fb->MaxNumLayers = max_layer_count; |
| |
| if (_mesa_is_desktop_gl(ctx) && !ctx->Extensions.ARB_ES2_compatibility) { |
| /* 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(ctx, "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(ctx, "missing readbuffer", -1); |
| return; |
| } |
| } |
| } |
| |
| if (numImages == 0) { |
| fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT; |
| fbo_incomplete(ctx, "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(ctx, "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(ctx, fb); |
| } |
| } |
| |
| |
| GLboolean GLAPIENTRY |
| _mesa_IsRenderbuffer(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; |
| } |
| |
| |
| static void |
| bind_renderbuffer(GLenum target, GLuint renderbuffer, bool allow_user_names) |
| { |
| struct gl_renderbuffer *newRb; |
| GET_CURRENT_CONTEXT(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 && !allow_user_names) { |
| /* 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); |
| } |
| |
| void GLAPIENTRY |
| _mesa_BindRenderbuffer(GLenum target, GLuint renderbuffer) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| |
| /* OpenGL ES glBindRenderbuffer and glBindRenderbufferOES use this same |
| * entry point, but they allow the use of user-generated names. |
| */ |
| bind_renderbuffer(target, renderbuffer, _mesa_is_gles(ctx)); |
| } |
| |
| void GLAPIENTRY |
| _mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer) |
| { |
| /* This function should not be in the dispatch table for core profile / |
| * OpenGL 3.1, so execution should never get here in those cases -- no |
| * need for an explicit test. |
| */ |
| bind_renderbuffer(target, renderbuffer, true); |
| } |
| |
| |
| /** |
| * Remove the specified renderbuffer or texture from any attachment point in |
| * the framebuffer. |
| * |
| * \returns |
| * \c true if the renderbuffer was detached from an attachment point. \c |
| * false otherwise. |
| */ |
| bool |
| _mesa_detach_renderbuffer(struct gl_context *ctx, |
| struct gl_framebuffer *fb, |
| const void *att) |
| { |
| unsigned i; |
| bool progress = false; |
| |
| for (i = 0; i < BUFFER_COUNT; i++) { |
| if (fb->Attachment[i].Texture == att |
| || fb->Attachment[i].Renderbuffer == att) { |
| _mesa_remove_attachment(ctx, &fb->Attachment[i]); |
| progress = true; |
| } |
| } |
| |
| /* Section 4.4.4 (Framebuffer Completeness), subsection "Whole Framebuffer |
| * Completeness," of the OpenGL 3.1 spec says: |
| * |
| * "Performing any of the following actions may change whether the |
| * framebuffer is considered complete or incomplete: |
| * |
| * ... |
| * |
| * - Deleting, with DeleteTextures or DeleteRenderbuffers, an object |
| * containing an image that is attached to a framebuffer object |
| * that is bound to the framebuffer." |
| */ |
| if (progress) |
| invalidate_framebuffer(fb); |
| |
| return progress; |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_DeleteRenderbuffers(GLsizei n, const GLuint *renderbuffers) |
| { |
| GLint i; |
| GET_CURRENT_CONTEXT(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_BindRenderbuffer(GL_RENDERBUFFER_EXT, 0); |
| } |
| |
| /* Section 4.4.2 (Attaching Images to Framebuffer Objects), |
| * subsection "Attaching Renderbuffer Images to a Framebuffer," of |
| * the OpenGL 3.1 spec says: |
| * |
| * "If a renderbuffer object is deleted while its image is |
| * attached to one or more attachment points in the currently |
| * bound framebuffer, then it is as if FramebufferRenderbuffer |
| * had been called, with a renderbuffer of 0, for each |
| * attachment point to which this image was attached in the |
| * currently bound framebuffer. In other words, this |
| * renderbuffer image is first detached from all attachment |
| * points in the currently bound framebuffer. Note that the |
| * renderbuffer image is specifically not detached from any |
| * non-bound framebuffers. Detaching the image from any |
| * non-bound framebuffers is the responsibility of the |
| * application. |
| */ |
| if (_mesa_is_user_fbo(ctx->DrawBuffer)) { |
| _mesa_detach_renderbuffer(ctx, ctx->DrawBuffer, rb); |
| } |
| if (_mesa_is_user_fbo(ctx->ReadBuffer) |
| && ctx->ReadBuffer != ctx->DrawBuffer) { |
| _mesa_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_GenRenderbuffers(GLsizei n, GLuint *renderbuffers) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| GLuint first; |
| GLint i; |
| |
| 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 (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX, |
| * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE, |
| * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc). |
| * |
| * This is similar to _mesa_base_tex_format() but the set of valid |
| * internal formats is different. |
| * |
| * Note that even if a format is determined to be legal here, validation |
| * of the FBO may fail if the format is not supported by the driver/GPU. |
| * |
| * \param internalFormat as passed to glRenderbufferStorage() |
| * \return the base internal format, or 0 if internalFormat is illegal |
| */ |
| GLenum |
| _mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat) |
| { |
| /* |
| * Notes: some formats such as alpha, luminance, etc. were added |
| * with GL_ARB_framebuffer_object. |
| */ |
| switch (internalFormat) { |
| case GL_ALPHA: |
| case GL_ALPHA4: |
| case GL_ALPHA8: |
| case GL_ALPHA12: |
| case GL_ALPHA16: |
| return ctx->API == API_OPENGL_COMPAT && ctx->Extensions.ARB_framebuffer_object |
| ? GL_ALPHA : 0; |
| case GL_LUMINANCE: |
| case GL_LUMINANCE4: |
| case GL_LUMINANCE8: |
| case GL_LUMINANCE12: |
| case GL_LUMINANCE16: |
| return ctx->API == API_OPENGL_COMPAT && ctx->Extensions.ARB_framebuffer_object |
| ? GL_LUMINANCE : 0; |
| case GL_LUMINANCE_ALPHA: |
| case GL_LUMINANCE4_ALPHA4: |
| case GL_LUMINANCE6_ALPHA2: |
| case GL_LUMINANCE8_ALPHA8: |
| case GL_LUMINANCE12_ALPHA4: |
| case GL_LUMINANCE12_ALPHA12: |
| case GL_LUMINANCE16_ALPHA16: |
| return ctx->API == API_OPENGL_COMPAT && ctx->Extensions.ARB_framebuffer_object |
| ? GL_LUMINANCE_ALPHA : 0; |
| case GL_INTENSITY: |
| case GL_INTENSITY4: |
| case GL_INTENSITY8: |
| case GL_INTENSITY12: |
| case GL_INTENSITY16: |
| return ctx->API == API_OPENGL_COMPAT && ctx->Extensions.ARB_framebuffer_object |
| ? GL_INTENSITY : 0; |
| case GL_RGB8: |
| return GL_RGB; |
| case GL_RGB: |
| case GL_R3_G3_B2: |
| case GL_RGB4: |
| case GL_RGB5: |
| case GL_RGB10: |
| case GL_RGB12: |
| case GL_RGB16: |
| return _mesa_is_desktop_gl(ctx) ? GL_RGB : 0; |
| case GL_SRGB8_EXT: |
| return _mesa_is_desktop_gl(ctx) ? GL_RGB : 0; |
| case GL_RGBA4: |
| case GL_RGB5_A1: |
| case GL_RGBA8: |
| return GL_RGBA; |
| case GL_RGBA: |
| case GL_RGBA2: |
| case GL_RGBA12: |
| case GL_RGBA16: |
| return _mesa_is_desktop_gl(ctx) ? GL_RGBA : 0; |
| case GL_RGB10_A2: |
| case GL_SRGB8_ALPHA8_EXT: |
| return _mesa_is_desktop_gl(ctx) || _mesa_is_gles3(ctx) ? GL_RGBA : 0; |
| case GL_STENCIL_INDEX: |
| case GL_STENCIL_INDEX1_EXT: |
| case GL_STENCIL_INDEX4_EXT: |
| case GL_STENCIL_INDEX16_EXT: |
| /* There are extensions for GL_STENCIL_INDEX1 and GL_STENCIL_INDEX4 in |
| * OpenGL ES, but Mesa does not currently support them. |
| */ |
| return _mesa_is_desktop_gl(ctx) ? GL_STENCIL_INDEX : 0; |
| case GL_STENCIL_INDEX8_EXT: |
| return GL_STENCIL_INDEX; |
| case GL_DEPTH_COMPONENT: |
| case GL_DEPTH_COMPONENT32: |
| return _mesa_is_desktop_gl(ctx) ? GL_DEPTH_COMPONENT : 0; |
| case GL_DEPTH_COMPONENT16: |
| case GL_DEPTH_COMPONENT24: |
| return GL_DEPTH_COMPONENT; |
| case GL_DEPTH_STENCIL: |
| return _mesa_is_desktop_gl(ctx) ? GL_DEPTH_STENCIL : 0; |
| case GL_DEPTH24_STENCIL8: |
| return GL_DEPTH_STENCIL; |
| case GL_DEPTH_COMPONENT32F: |
| return ctx->Version >= 30 |
| || (ctx->API == API_OPENGL_COMPAT && ctx->Extensions.ARB_depth_buffer_float) |
| ? GL_DEPTH_COMPONENT : 0; |
| case GL_DEPTH32F_STENCIL8: |
| return ctx->Version >= 30 |
| || (ctx->API == API_OPENGL_COMPAT && ctx->Extensions.ARB_depth_buffer_float) |
| ? GL_DEPTH_STENCIL : 0; |
| case GL_RED: |
| case GL_R16: |
| return _mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_rg |
| ? GL_RED : 0; |
| case GL_R8: |
| return ctx->API != API_OPENGLES && ctx->Extensions.ARB_texture_rg |
| ? GL_RED : 0; |
| case GL_RG: |
| case GL_RG16: |
| return _mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_rg |
| ? GL_RG : 0; |
| case GL_RG8: |
| return ctx->API != API_OPENGLES && ctx->Extensions.ARB_texture_rg |
| ? GL_RG : 0; |
| /* signed normalized texture formats */ |
| case GL_RED_SNORM: |
| case GL_R8_SNORM: |
| case GL_R16_SNORM: |
| return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_snorm |
| ? GL_RED : 0; |
| case GL_RG_SNORM: |
| case GL_RG8_SNORM: |
| case GL_RG16_SNORM: |
| return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_snorm |
| ? GL_RG : 0; |
| case GL_RGB_SNORM: |
| case GL_RGB8_SNORM: |
| case GL_RGB16_SNORM: |
| return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_snorm |
| ? GL_RGB : 0; |
| case GL_RGBA_SNORM: |
| case GL_RGBA8_SNORM: |
| case GL_RGBA16_SNORM: |
| return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_snorm |
| ? GL_RGBA : 0; |
| case GL_ALPHA_SNORM: |
| case GL_ALPHA8_SNORM: |
| case GL_ALPHA16_SNORM: |
| return ctx->API == API_OPENGL_COMPAT && |
| ctx->Extensions.EXT_texture_snorm && |
| ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0; |
| case GL_LUMINANCE_SNORM: |
| case GL_LUMINANCE8_SNORM: |
| case GL_LUMINANCE16_SNORM: |
| return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_snorm |
| ? GL_LUMINANCE : 0; |
| case GL_LUMINANCE_ALPHA_SNORM: |
| case GL_LUMINANCE8_ALPHA8_SNORM: |
| case GL_LUMINANCE16_ALPHA16_SNORM: |
| return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_snorm |
| ? GL_LUMINANCE_ALPHA : 0; |
| case GL_INTENSITY_SNORM: |
| case GL_INTENSITY8_SNORM: |
| case GL_INTENSITY16_SNORM: |
| return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_snorm |
| ? GL_INTENSITY : 0; |
| |
| case GL_R16F: |
| case GL_R32F: |
| return ((_mesa_is_desktop_gl(ctx) && |
| ctx->Extensions.ARB_texture_rg && |
| ctx->Extensions.ARB_texture_float) || |
| _mesa_is_gles3(ctx) /* EXT_color_buffer_float */ ) |
| ? GL_RED : 0; |
| case GL_RG16F: |
| case GL_RG32F: |
| return ((_mesa_is_desktop_gl(ctx) && |
| ctx->Extensions.ARB_texture_rg && |
| ctx->Extensions.ARB_texture_float) || |
| _mesa_is_gles3(ctx) /* EXT_color_buffer_float */ ) |
| ? GL_RG : 0; |
| case GL_RGB16F: |
| case GL_RGB32F: |
| return (_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_texture_float) |
| ? GL_RGB : 0; |
| case GL_RGBA16F: |
| case GL_RGBA32F: |
| return ((_mesa_is_desktop_gl(ctx) && |
| ctx->Extensions.ARB_texture_float) || |
| _mesa_is_gles3(ctx) /* EXT_color_buffer_float */ ) |
| ? GL_RGBA : 0; |
| case GL_ALPHA16F_ARB: |
| case GL_ALPHA32F_ARB: |
| return ctx->API == API_OPENGL_COMPAT && |
| ctx->Extensions.ARB_texture_float && |
| ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0; |
| case GL_LUMINANCE16F_ARB: |
| case GL_LUMINANCE32F_ARB: |
| return ctx->API == API_OPENGL_COMPAT && |
| ctx->Extensions.ARB_texture_float && |
| ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0; |
| case GL_LUMINANCE_ALPHA16F_ARB: |
| case GL_LUMINANCE_ALPHA32F_ARB: |
| return ctx->API == API_OPENGL_COMPAT && |
| ctx->Extensions.ARB_texture_float && |
| ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0; |
| case GL_INTENSITY16F_ARB: |
| case GL_INTENSITY32F_ARB: |
| return ctx->API == API_OPENGL_COMPAT && |
| ctx->Extensions.ARB_texture_float && |
| ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0; |
| case GL_RGB9_E5: |
| return (_mesa_is_desktop_gl(ctx) |
| && ctx->Extensions.EXT_texture_shared_exponent) |
| ? GL_RGB : 0; |
| case GL_R11F_G11F_B10F: |
| return ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_packed_float) || |
| _mesa_is_gles3(ctx) /* EXT_color_buffer_float */ ) |
| ? GL_RGB : 0; |
| |
| case GL_RGBA8UI_EXT: |
| case GL_RGBA16UI_EXT: |
| case GL_RGBA32UI_EXT: |
| case GL_RGBA8I_EXT: |
| case GL_RGBA16I_EXT: |
| case GL_RGBA32I_EXT: |
| return ctx->Version >= 30 |
| || (_mesa_is_desktop_gl(ctx) && |
| ctx->Extensions.EXT_texture_integer) ? GL_RGBA : 0; |
| |
| case GL_RGB8UI_EXT: |
| case GL_RGB16UI_EXT: |
| case GL_RGB32UI_EXT: |
| case GL_RGB8I_EXT: |
| case GL_RGB16I_EXT: |
| case GL_RGB32I_EXT: |
| return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_integer |
| ? GL_RGB : 0; |
| case GL_R8UI: |
| case GL_R8I: |
| case GL_R16UI: |
| case GL_R16I: |
| case GL_R32UI: |
| case GL_R32I: |
| return ctx->Version >= 30 |
| || (_mesa_is_desktop_gl(ctx) && |
| ctx->Extensions.ARB_texture_rg && |
| ctx->Extensions.EXT_texture_integer) ? GL_RED : 0; |
| |
| case GL_RG8UI: |
| case GL_RG8I: |
| case GL_RG16UI: |
| case GL_RG16I: |
| case GL_RG32UI: |
| case GL_RG32I: |
| return ctx->Version >= 30 |
| || (_mesa_is_desktop_gl(ctx) && |
| ctx->Extensions.ARB_texture_rg && |
| ctx->Extensions.EXT_texture_integer) ? GL_RG : 0; |
| |
| case GL_INTENSITY8I_EXT: |
| case GL_INTENSITY8UI_EXT: |
| case GL_INTENSITY16I_EXT: |
| case GL_INTENSITY16UI_EXT: |
| case GL_INTENSITY32I_EXT: |
| case GL_INTENSITY32UI_EXT: |
| return ctx->API == API_OPENGL_COMPAT && |
| ctx->Extensions.EXT_texture_integer && |
| ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0; |
| |
| case GL_LUMINANCE8I_EXT: |
| case GL_LUMINANCE8UI_EXT: |
| case GL_LUMINANCE16I_EXT: |
| case GL_LUMINANCE16UI_EXT: |
| case GL_LUMINANCE32I_EXT: |
| case GL_LUMINANCE32UI_EXT: |
| return ctx->API == API_OPENGL_COMPAT && |
| ctx->Extensions.EXT_texture_integer && |
| ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0; |
| |
| case GL_LUMINANCE_ALPHA8I_EXT: |
| case GL_LUMINANCE_ALPHA8UI_EXT: |
| case GL_LUMINANCE_ALPHA16I_EXT: |
| case GL_LUMINANCE_ALPHA16UI_EXT: |
| case GL_LUMINANCE_ALPHA32I_EXT: |
| case GL_LUMINANCE_ALPHA32UI_EXT: |
| return ctx->API == API_OPENGL_COMPAT && |
| ctx->Extensions.EXT_texture_integer && |
| ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0; |
| |
| case GL_ALPHA8I_EXT: |
| case GL_ALPHA8UI_EXT: |
| case GL_ALPHA16I_EXT: |
| case GL_ALPHA16UI_EXT: |
| case GL_ALPHA32I_EXT: |
| case GL_ALPHA32UI_EXT: |
| return ctx->API == API_OPENGL_COMPAT && |
| ctx->Extensions.EXT_texture_integer && |
| ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0; |
| |
| case GL_RGB10_A2UI: |
| return (_mesa_is_desktop_gl(ctx) && |
| ctx->Extensions.ARB_texture_rgb10_a2ui) |
| || _mesa_is_gles3(ctx) ? GL_RGBA : 0; |
| |
| case GL_RGB565: |
| return _mesa_is_gles(ctx) || ctx->Extensions.ARB_ES2_compatibility |
| ? GL_RGB : 0; |
| default: |
| return 0; |
| } |
| } |
| |
| |
| /** |
| * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk(). |
| */ |
| static void |
| invalidate_rb(GLuint key, void *data, void *userData) |
| { |
| struct gl_framebuffer *fb = (struct gl_framebuffer *) data; |
| struct gl_renderbuffer *rb = (struct gl_renderbuffer *) userData; |
| |
| /* If this is a user-created FBO */ |
| if (_mesa_is_user_fbo(fb)) { |
| GLuint i; |
| for (i = 0; i < BUFFER_COUNT; i++) { |
| struct gl_renderbuffer_attachment *att = fb->Attachment + i; |
| if (att->Type == GL_RENDERBUFFER && |
| att->Renderbuffer == rb) { |
| /* Mark fb status as indeterminate to force re-validation */ |
| fb->_Status = 0; |
| return; |
| } |
| } |
| } |
| } |
| |
| |
| /** sentinal value, see below */ |
| #define NO_SAMPLES 1000 |
| |
| |
| /** |
| * Helper function used by _mesa_RenderbufferStorage() and |
| * _mesa_RenderbufferStorageMultisample(). |
| * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorage(). |
| */ |
| static void |
| renderbuffer_storage(GLenum target, GLenum internalFormat, |
| GLsizei width, GLsizei height, GLsizei samples) |
| { |
| const char *func = samples == NO_SAMPLES ? |
| "glRenderbufferStorage" : "glRenderbufferStorageMultisample"; |
| struct gl_renderbuffer *rb; |
| GLenum baseFormat; |
| GLenum sample_count_error; |
| GET_CURRENT_CONTEXT(ctx); |
| |
| if (MESA_VERBOSE & VERBOSE_API) { |
| if (samples == NO_SAMPLES) |
| _mesa_debug(ctx, "%s(%s, %s, %d, %d)\n", |
| func, |
| _mesa_lookup_enum_by_nr(target), |
| _mesa_lookup_enum_by_nr(internalFormat), |
| width, height); |
| else |
| _mesa_debug(ctx, "%s(%s, %s, %d, %d, %d)\n", |
| func, |
| _mesa_lookup_enum_by_nr(target), |
| _mesa_lookup_enum_by_nr(internalFormat), |
| width, height, samples); |
| } |
| |
| 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=%s)", |
| func, _mesa_lookup_enum_by_nr(internalFormat)); |
| return; |
| } |
| |
| if (width < 0 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) { |
| _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func); |
| return; |
| } |
| |
| if (height < 0 || 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 { |
| /* check the sample count; |
| * note: driver may choose to use more samples than what's requested |
| */ |
| sample_count_error = _mesa_check_sample_count(ctx, target, |
| internalFormat, samples); |
| if (sample_count_error != GL_NO_ERROR) { |
| _mesa_error(ctx, sample_count_error, "%s(samples)", func); |
| return; |
| } |
| } |
| |
| rb = ctx->CurrentRenderbuffer; |
| if (!rb) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func); |
| return; |
| } |
| |
| FLUSH_VERTICES(ctx, _NEW_BUFFERS); |
| |
| if (rb->InternalFormat == internalFormat && |
| rb->Width == (GLuint) width && |
| rb->Height == (GLuint) height && |
| rb->NumSamples == samples) { |
| /* 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 */ |
| /* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */ |
| 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; |
| } |
| |
| /* Invalidate the framebuffers the renderbuffer is attached in. */ |
| if (rb->AttachedAnytime) { |
| _mesa_HashWalk(ctx->Shared->FrameBuffers, invalidate_rb, rb); |
| } |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image) |
| { |
| struct gl_renderbuffer *rb; |
| GET_CURRENT_CONTEXT(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); |
| } |
| |
| |
| /** |
| * Helper function for _mesa_GetRenderbufferParameteriv() and |
| * _mesa_GetFramebufferAttachmentParameteriv() |
| * 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, mesa_format format) |
| { |
| if (_mesa_base_format_has_channel(baseFormat, pname)) |
| return _mesa_get_format_bits(format, pname); |
| else |
| return 0; |
| } |
| |
| |
| |
| void GLAPIENTRY |
| _mesa_RenderbufferStorage(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_GetRenderbufferParameteriv(GLenum target, GLenum pname, GLint *params) |
| { |
| struct gl_renderbuffer *rb; |
| GET_CURRENT_CONTEXT(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 ((_mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_framebuffer_object) |
| || _mesa_is_gles3(ctx)) { |
| *params = rb->NumSamples; |
| break; |
| } |
| /* fallthrough */ |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glGetRenderbufferParameterivEXT(target)"); |
| return; |
| } |
| } |
| |
| |
| GLboolean GLAPIENTRY |
| _mesa_IsFramebuffer(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(struct gl_context *ctx, struct gl_framebuffer *fb) |
| { |
| GLuint i; |
| ASSERT(ctx->Driver.RenderTexture); |
| |
| if (_mesa_is_winsys_fbo(fb)) |
| return; /* can't render to texture with winsys framebuffers */ |
| |
| for (i = 0; i < BUFFER_COUNT; i++) { |
| struct gl_renderbuffer_attachment *att = fb->Attachment + i; |
| if (att->Texture && att->Renderbuffer->TexImage |
| && driver_RenderTexture_is_safe(att)) { |
| 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(struct gl_context *ctx, struct gl_framebuffer *fb) |
| { |
| if (_mesa_is_winsys_fbo(fb)) |
| 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; |
| struct gl_renderbuffer *rb = att->Renderbuffer; |
| if (rb && rb->NeedsFinishRenderTexture) { |
| ctx->Driver.FinishRenderTexture(ctx, rb); |
| } |
| } |
| } |
| } |
| |
| |
| static void |
| bind_framebuffer(GLenum target, GLuint framebuffer, bool allow_user_names) |
| { |
| struct gl_framebuffer *newDrawFb, *newReadFb; |
| struct gl_framebuffer *oldDrawFb, *oldReadFb; |
| GLboolean bindReadBuf, bindDrawBuf; |
| GET_CURRENT_CONTEXT(ctx); |
| |
| switch (target) { |
| case GL_DRAW_FRAMEBUFFER_EXT: |
| bindDrawBuf = GL_TRUE; |
| bindReadBuf = GL_FALSE; |
| break; |
| case GL_READ_FRAMEBUFFER_EXT: |
| bindDrawBuf = GL_FALSE; |
| bindReadBuf = GL_TRUE; |
| break; |
| 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 && !allow_user_names) { |
| /* 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 framebuffer had any texture attachments */ |
| if (oldDrawFb) |
| 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_BindFramebuffer(GLenum target, GLuint framebuffer) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| |
| /* OpenGL ES glBindFramebuffer and glBindFramebufferOES use this same entry |
| * point, but they allow the use of user-generated names. |
| */ |
| bind_framebuffer(target, framebuffer, _mesa_is_gles(ctx)); |
| } |
| |
| void GLAPIENTRY |
| _mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer) |
| { |
| /* This function should not be in the dispatch table for core profile / |
| * OpenGL 3.1, so execution should never get here in those cases -- no |
| * need for an explicit test. |
| */ |
| bind_framebuffer(target, framebuffer, true); |
| } |
| |
| void GLAPIENTRY |
| _mesa_DeleteFramebuffers(GLsizei n, const GLuint *framebuffers) |
| { |
| GLint i; |
| GET_CURRENT_CONTEXT(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_BindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); |
| } |
| if (fb == ctx->ReadBuffer) { |
| /* bind default */ |
| ASSERT(fb->RefCount >= 2); |
| _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER, 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_GenFramebuffers(GLsizei n, GLuint *framebuffers) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| GLuint first; |
| GLint i; |
| |
| 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_CheckFramebufferStatus(GLenum target) |
| { |
| struct gl_framebuffer *buffer; |
| GET_CURRENT_CONTEXT(ctx); |
| |
| ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0); |
| |
| if (MESA_VERBOSE & VERBOSE_API) |
| _mesa_debug(ctx, "glCheckFramebufferStatus(%s)\n", |
| _mesa_lookup_enum_by_nr(target)); |
| |
| buffer = get_framebuffer_target(ctx, target); |
| if (!buffer) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)"); |
| return 0; |
| } |
| |
| if (_mesa_is_winsys_fbo(buffer)) { |
| /* EGL_KHR_surfaceless_context allows the winsys FBO to be incomplete. */ |
| if (buffer != &IncompleteFramebuffer) { |
| return GL_FRAMEBUFFER_COMPLETE_EXT; |
| } else { |
| return GL_FRAMEBUFFER_UNDEFINED; |
| } |
| } |
| |
| /* No need to flush here */ |
| |
| if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) { |
| _mesa_test_framebuffer_completeness(ctx, buffer); |
| } |
| |
| return buffer->_Status; |
| } |
| |
| |
| /** |
| * Replicate the src attachment point. Used by framebuffer_texture() when |
| * the same texture is attached at GL_DEPTH_ATTACHMENT and |
| * GL_STENCIL_ATTACHMENT. |
| */ |
| static void |
| reuse_framebuffer_texture_attachment(struct gl_framebuffer *fb, |
| gl_buffer_index dst, |
| gl_buffer_index src) |
| { |
| struct gl_renderbuffer_attachment *dst_att = &fb->Attachment[dst]; |
| struct gl_renderbuffer_attachment *src_att = &fb->Attachment[src]; |
| |
| assert(src_att->Texture != NULL); |
| assert(src_att->Renderbuffer != NULL); |
| |
| _mesa_reference_texobj(&dst_att->Texture, src_att->Texture); |
| _mesa_reference_renderbuffer(&dst_att->Renderbuffer, src_att->Renderbuffer); |
| dst_att->Type = src_att->Type; |
| dst_att->Complete = src_att->Complete; |
| dst_att->TextureLevel = src_att->TextureLevel; |
| dst_att->Zoffset = src_att->Zoffset; |
| } |
| |
| |
| /** |
| * Common code called by glFramebufferTexture1D/2D/3DEXT() and |
| * glFramebufferTextureLayerEXT(). |
| * |
| * \param textarget is the textarget that was passed to the |
| * glFramebufferTexture...() function, or 0 if the corresponding function |
| * doesn't have a textarget parameter. |
| * |
| * \param layered is true if this function was called from |
| * glFramebufferTexture(), false otherwise. |
| */ |
| static void |
| framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target, |
| GLenum attachment, GLenum textarget, GLuint texture, |
| GLint level, GLint zoffset, GLboolean layered) |
| { |
| struct gl_renderbuffer_attachment *att; |
| struct gl_texture_object *texObj = NULL; |
| struct gl_framebuffer *fb; |
| GLenum maxLevelsTarget; |
| |
| fb = get_framebuffer_target(ctx, target); |
| if (!fb) { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glFramebufferTexture%sEXT(target=0x%x)", caller, target); |
| return; |
| } |
| |
| /* check framebuffer binding */ |
| if (_mesa_is_winsys_fbo(fb)) { |
| _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) { |
| if (layered) { |
| /* We're being called by glFramebufferTexture() and textarget |
| * is not used. |
| */ |
| switch (texObj->Target) { |
| case GL_TEXTURE_3D: |
| case GL_TEXTURE_1D_ARRAY_EXT: |
| case GL_TEXTURE_2D_ARRAY_EXT: |
| case GL_TEXTURE_CUBE_MAP: |
| case GL_TEXTURE_CUBE_MAP_ARRAY: |
| case GL_TEXTURE_2D_MULTISAMPLE_ARRAY: |
| err = false; |
| break; |
| case GL_TEXTURE_1D: |
| case GL_TEXTURE_2D: |
| case GL_TEXTURE_RECTANGLE: |
| case GL_TEXTURE_2D_MULTISAMPLE: |
| /* These texture types are valid to pass to |
| * glFramebufferTexture(), but since they aren't layered, it |
| * is equivalent to calling glFramebufferTexture{1D,2D}(). |
| */ |
| err = false; |
| layered = false; |
| textarget = texObj->Target; |
| break; |
| default: |
| err = true; |
| break; |
| } |
| } else { |
| /* We're being called by glFramebufferTextureLayer() and |
| * textarget is not used. The only legal texture types for |
| * that function are 3D and 1D/2D arrays textures. |
| */ |
| err = (texObj->Target != GL_TEXTURE_3D) && |
| (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) && |
| (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT) && |
| (texObj->Target != GL_TEXTURE_CUBE_MAP_ARRAY) && |
| (texObj->Target != GL_TEXTURE_2D_MULTISAMPLE_ARRAY); |
| } |
| } |
| else { |
| /* Make sure textarget is consistent with the texture's type */ |
| err = (texObj->Target == GL_TEXTURE_CUBE_MAP) |
| ? !_mesa_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) || |
| (texObj->Target == GL_TEXTURE_CUBE_MAP_ARRAY) || |
| (texObj->Target == GL_TEXTURE_2D_MULTISAMPLE_ARRAY)) { |
| if (zoffset < 0 || |
| zoffset >= (GLint) ctx->Const.MaxArrayTextureLayers) { |
| _mesa_error(ctx, GL_INVALID_VALUE, |
| "glFramebufferTexture%sEXT(layer)", caller); |
| return; |
| } |
| } |
| |
| maxLevelsTarget = textarget ? textarget : texObj->Target; |
| if ((level < 0) || |
| (level >= _mesa_max_texture_levels(ctx, maxLevelsTarget))) { |
| _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) { |
| if (attachment == GL_DEPTH_ATTACHMENT && |
| texObj == fb->Attachment[BUFFER_STENCIL].Texture && |
| level == fb->Attachment[BUFFER_STENCIL].TextureLevel && |
| _mesa_tex_target_to_face(textarget) == |
| fb->Attachment[BUFFER_STENCIL].CubeMapFace && |
| zoffset == fb->Attachment[BUFFER_STENCIL].Zoffset) { |
| /* The texture object is already attached to the stencil attachment |
| * point. Don't create a new renderbuffer; just reuse the stencil |
| * attachment's. This is required to prevent a GL error in |
| * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL). |
| */ |
| reuse_framebuffer_texture_attachment(fb, BUFFER_DEPTH, |
| BUFFER_STENCIL); |
| } else if (attachment == GL_STENCIL_ATTACHMENT && |
| texObj == fb->Attachment[BUFFER_DEPTH].Texture && |
| level == fb->Attachment[BUFFER_DEPTH].TextureLevel && |
| _mesa_tex_target_to_face(textarget) == |
| fb->Attachment[BUFFER_DEPTH].CubeMapFace && |
| zoffset == fb->Attachment[BUFFER_DEPTH].Zoffset) { |
| /* As above, but with depth and stencil transposed. */ |
| reuse_framebuffer_texture_attachment(fb, BUFFER_STENCIL, |
| BUFFER_DEPTH); |
| } else { |
| _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget, |
| level, zoffset, layered); |
| if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) { |
| /* Above we created a new renderbuffer and attached it to the |
| * depth attachment point. Now attach it to the stencil attachment |
| * point too. |
| */ |
| assert(att == &fb->Attachment[BUFFER_DEPTH]); |
| reuse_framebuffer_texture_attachment(fb,BUFFER_STENCIL, |
| BUFFER_DEPTH); |
| } |
| } |
| |
| /* 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); |
| if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) { |
| assert(att == &fb->Attachment[BUFFER_DEPTH]); |
| _mesa_remove_attachment(ctx, &fb->Attachment[BUFFER_STENCIL]); |
| } |
| } |
| |
| invalidate_framebuffer(fb); |
| |
| _glthread_UNLOCK_MUTEX(fb->Mutex); |
| } |
| |
| |
| |
| void GLAPIENTRY |
| _mesa_FramebufferTexture1D(GLenum target, GLenum attachment, |
| GLenum textarget, GLuint texture, GLint level) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| |
| if (texture != 0) { |
| GLboolean error; |
| |
| switch (textarget) { |
| case GL_TEXTURE_1D: |
| error = GL_FALSE; |
| break; |
| case GL_TEXTURE_1D_ARRAY: |
| error = !ctx->Extensions.EXT_texture_array; |
| break; |
| default: |
| error = GL_TRUE; |
| } |
| |
| if (error) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glFramebufferTexture1DEXT(textarget=%s)", |
| _mesa_lookup_enum_by_nr(textarget)); |
| return; |
| } |
| } |
| |
| framebuffer_texture(ctx, "1D", target, attachment, textarget, texture, |
| level, 0, GL_FALSE); |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_FramebufferTexture2D(GLenum target, GLenum attachment, |
| GLenum textarget, GLuint texture, GLint level) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| |
| if (texture != 0) { |
| GLboolean error; |
| |
| switch (textarget) { |
| case GL_TEXTURE_2D: |
| error = GL_FALSE; |
| break; |
| case GL_TEXTURE_RECTANGLE: |
| error = _mesa_is_gles(ctx) |
| || !ctx->Extensions.NV_texture_rectangle; |
| break; |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_X: |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: |
| error = !ctx->Extensions.ARB_texture_cube_map; |
| break; |
| case GL_TEXTURE_2D_ARRAY: |
| error = (_mesa_is_gles(ctx) && ctx->Version < 30) |
| || !ctx->Extensions.EXT_texture_array; |
| break; |
| case GL_TEXTURE_2D_MULTISAMPLE: |
| case GL_TEXTURE_2D_MULTISAMPLE_ARRAY: |
| error = _mesa_is_gles(ctx) |
| || !ctx->Extensions.ARB_texture_multisample; |
| break; |
| default: |
| error = GL_TRUE; |
| } |
| |
| if (error) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glFramebufferTexture2DEXT(textarget=%s)", |
| _mesa_lookup_enum_by_nr(textarget)); |
| return; |
| } |
| } |
| |
| framebuffer_texture(ctx, "2D", target, attachment, textarget, texture, |
| level, 0, GL_FALSE); |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_FramebufferTexture3D(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_OPERATION, |
| "glFramebufferTexture3DEXT(textarget)"); |
| return; |
| } |
| |
| framebuffer_texture(ctx, "3D", target, attachment, textarget, texture, |
| level, zoffset, GL_FALSE); |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_FramebufferTextureLayer(GLenum target, GLenum attachment, |
| GLuint texture, GLint level, GLint layer) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| |
| framebuffer_texture(ctx, "Layer", target, attachment, 0, texture, |
| level, layer, GL_FALSE); |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_FramebufferTexture(GLenum target, GLenum attachment, |
| GLuint texture, GLint level) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| |
| if (_mesa_has_geometry_shaders(ctx)) { |
| framebuffer_texture(ctx, "Layer", target, attachment, 0, texture, |
| level, 0, GL_TRUE); |
| } else { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "unsupported function (glFramebufferTexture) called"); |
| } |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_FramebufferRenderbuffer(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); |
| |
| fb = get_framebuffer_target(ctx, target); |
| if (!fb) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)"); |
| return; |
| } |
| |
| if (renderbufferTarget != GL_RENDERBUFFER_EXT) { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glFramebufferRenderbufferEXT(renderbufferTarget)"); |
| return; |
| } |
| |
| if (_mesa_is_winsys_fbo(fb)) { |
| /* 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 if (rb == &DummyRenderbuffer) { |
| /* This is what NVIDIA does */ |
| _mesa_error(ctx, GL_INVALID_VALUE, |
| "glFramebufferRenderbufferEXT(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(ctx, fb); |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_GetFramebufferAttachmentParameteriv(GLenum target, GLenum attachment, |
| GLenum pname, GLint *params) |
| { |
| const struct gl_renderbuffer_attachment *att; |
| struct gl_framebuffer *buffer; |
| GLenum err; |
| GET_CURRENT_CONTEXT(ctx); |
| |
| /* The error differs in GL and GLES. */ |
| err = _mesa_is_desktop_gl(ctx) ? GL_INVALID_OPERATION : GL_INVALID_ENUM; |
| |
| buffer = get_framebuffer_target(ctx, target); |
| if (!buffer) { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glGetFramebufferAttachmentParameterivEXT(target)"); |
| return; |
| } |
| |
| if (_mesa_is_winsys_fbo(buffer)) { |
| /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec |
| * says: |
| * |
| * "If the framebuffer currently bound to target is zero, then |
| * INVALID_OPERATION is generated." |
| * |
| * The EXT_framebuffer_object spec has the same wording, and the |
| * OES_framebuffer_object spec refers to the EXT_framebuffer_object |
| * spec. |
| */ |
| if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_framebuffer_object) |
| && !_mesa_is_gles3(ctx)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetFramebufferAttachmentParameteriv(bound FBO = 0)"); |
| return; |
| } |
| |
| if (_mesa_is_gles3(ctx) && attachment != GL_BACK && |
| attachment != GL_DEPTH && attachment != GL_STENCIL) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetFramebufferAttachmentParameteriv(attachment)"); |
| return; |
| } |
| /* 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 = _mesa_is_winsys_fbo(buffer) |
| ? GL_FRAMEBUFFER_DEFAULT : 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 { |
| assert(att->Type == GL_NONE); |
| if (_mesa_is_desktop_gl(ctx) || _mesa_is_gles3(ctx)) { |
| *params = 0; |
| } else { |
| goto invalid_pname_enum; |
| } |
| } |
| return; |
| case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT: |
| if (att->Type == GL_TEXTURE) { |
| *params = att->TextureLevel; |
| } |
| else if (att->Type == GL_NONE) { |
| _mesa_error(ctx, err, |
| "glGetFramebufferAttachmentParameterivEXT(pname)"); |
| } |
| else { |
| goto invalid_pname_enum; |
| } |
| 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 if (att->Type == GL_NONE) { |
| _mesa_error(ctx, err, |
| "glGetFramebufferAttachmentParameterivEXT(pname)"); |
| } |
| else { |
| goto invalid_pname_enum; |
| } |
| return; |
| case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT: |
| if (ctx->API == API_OPENGLES) { |
| goto invalid_pname_enum; |
| } else if (att->Type == GL_NONE) { |
| _mesa_error(ctx, err, |
| "glGetFramebufferAttachmentParameterivEXT(pname)"); |
| } else if (att->Type == GL_TEXTURE) { |
| if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) { |
| *params = att->Zoffset; |
| } |
| else { |
| *params = 0; |
| } |
| } |
| else { |
| goto invalid_pname_enum; |
| } |
| return; |
| case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING: |
| if ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_framebuffer_object) |
| && !_mesa_is_gles3(ctx)) { |
| goto invalid_pname_enum; |
| } |
| else if (att->Type == GL_NONE) { |
| _mesa_error(ctx, err, |
| "glGetFramebufferAttachmentParameterivEXT(pname)"); |
| } |
| else { |
| if (ctx->Extensions.EXT_framebuffer_sRGB) { |
| *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format); |
| } |
| else { |
| /* According to ARB_framebuffer_sRGB, we should return LINEAR |
| * if the sRGB conversion is unsupported. */ |
| *params = GL_LINEAR; |
| } |
| } |
| return; |
| case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE: |
| if ((ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.ARB_framebuffer_object) |
| && ctx->API != API_OPENGL_CORE |
| && !_mesa_is_gles3(ctx)) { |
| goto invalid_pname_enum; |
| } |
| else if (att->Type == GL_NONE) { |
| _mesa_error(ctx, err, |
| "glGetFramebufferAttachmentParameterivEXT(pname)"); |
| } |
| else { |
| mesa_format format = att->Renderbuffer->Format; |
| |
| /* Page 235 (page 247 of the PDF) in section 6.1.13 of the OpenGL ES |
| * 3.0.1 spec says: |
| * |
| * "If pname is FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE.... If |
| * attachment is DEPTH_STENCIL_ATTACHMENT the query will fail and |
| * generate an INVALID_OPERATION error. |
| */ |
| if (_mesa_is_gles3(ctx) && attachment == GL_DEPTH_STENCIL_ATTACHMENT) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetFramebufferAttachmentParameteriv(cannot query " |
| "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE of " |
| "GL_DEPTH_STENCIL_ATTACHMENT"); |
| return; |
| } |
| |
| if (format == MESA_FORMAT_S8) { |
| /* special cases */ |
| *params = GL_INDEX; |
| } |
| else if (format == MESA_FORMAT_Z32_FLOAT_X24S8) { |
| /* depends on the attachment parameter */ |
| if (attachment == GL_STENCIL_ATTACHMENT) { |
| *params = GL_INDEX; |
| } |
| else { |
| *params = GL_FLOAT; |
| } |
| } |
| 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 ((!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_framebuffer_object) |
| && !_mesa_is_gles3(ctx)) { |
| goto invalid_pname_enum; |
| } |
| else if (att->Type == GL_NONE) { |
| _mesa_error(ctx, err, |
| "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 { |
| _mesa_problem(ctx, "glGetFramebufferAttachmentParameterivEXT:" |
| " invalid FBO attachment structure"); |
| } |
| return; |
| case GL_FRAMEBUFFER_ATTACHMENT_LAYERED: |
| if (!_mesa_has_geometry_shaders(ctx)) { |
| goto invalid_pname_enum; |
| } else if (att->Type == GL_TEXTURE) { |
| *params = att->Layered; |
| } else if (att->Type == GL_NONE) { |
| _mesa_error(ctx, err, |
| "glGetFramebufferAttachmentParameteriv(pname)"); |
| } else { |
| goto invalid_pname_enum; |
| } |
| return; |
| default: |
| goto invalid_pname_enum; |
| } |
| |
| return; |
| |
| invalid_pname_enum: |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glGetFramebufferAttachmentParameteriv(pname)"); |
| return; |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_GenerateMipmap(GLenum target) |
| { |
| struct gl_texture_image *srcImage; |
| struct gl_texture_object *texObj; |
| GLboolean error; |
| |
| GET_CURRENT_CONTEXT(ctx); |
| |
| FLUSH_VERTICES(ctx, 0); |
| |
| switch (target) { |
| case GL_TEXTURE_1D: |
| error = _mesa_is_gles(ctx); |
| break; |
| case GL_TEXTURE_2D: |
| error = GL_FALSE; |
| break; |
| case GL_TEXTURE_3D: |
| error = ctx->API == API_OPENGLES; |
| break; |
| case GL_TEXTURE_CUBE_MAP: |
| error = !ctx->Extensions.ARB_texture_cube_map; |
| break; |
| case GL_TEXTURE_1D_ARRAY: |
| error = _mesa_is_gles(ctx) || !ctx->Extensions.EXT_texture_array; |
| break; |
| case GL_TEXTURE_2D_ARRAY: |
| error = (_mesa_is_gles(ctx) && ctx->Version < 30) |
| || !ctx->Extensions.EXT_texture_array; |
| break; |
| default: |
| error = GL_TRUE; |
| } |
| |
| if (error) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target=%s)", |
| _mesa_lookup_enum_by_nr(target)); |
| return; |
| } |
| |
| texObj = _mesa_get_current_tex_object(ctx, target); |
| |
| if (texObj->BaseLevel >= texObj->MaxLevel) { |
| /* nothing to do */ |
| return; |
| } |
| |
| if (texObj->Target == GL_TEXTURE_CUBE_MAP && |
| !_mesa_cube_complete(texObj)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGenerateMipmap(incomplete cube map)"); |
| return; |
| } |
| |
| _mesa_lock_texture(ctx, texObj); |
| |
| srcImage = _mesa_select_tex_image(ctx, texObj, target, texObj->BaseLevel); |
| if (!srcImage) { |
| _mesa_unlock_texture(ctx, texObj); |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGenerateMipmap(zero size base image)"); |
| return; |
| } |
| |
| if (_mesa_is_enum_format_integer(srcImage->InternalFormat) || |
| _mesa_is_depthstencil_format(srcImage->InternalFormat) || |
| _mesa_is_stencil_format(srcImage->InternalFormat)) { |
| _mesa_unlock_texture(ctx, texObj); |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGenerateMipmap(invalid internal format)"); |
| return; |
| } |
| |
| 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); |
| } |
| |
| |
| 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; |
| } |
| |
| |
| /** |
| * Helper function for checking if the datatypes of color buffers are |
| * compatible for glBlitFramebuffer. From the 3.1 spec, page 198: |
| * |
| * "GL_INVALID_OPERATION is generated if mask contains GL_COLOR_BUFFER_BIT |
| * and any of the following conditions hold: |
| * - The read buffer contains fixed-point or floating-point values and any |
| * draw buffer contains neither fixed-point nor floating-point values. |
| * - The read buffer contains unsigned integer values and any draw buffer |
| * does not contain unsigned integer values. |
| * - The read buffer contains signed integer values and any draw buffer |
| * does not contain signed integer values." |
| */ |
| static GLboolean |
| compatible_color_datatypes(mesa_format srcFormat, mesa_format dstFormat) |
| { |
| GLenum srcType = _mesa_get_format_datatype(srcFormat); |
| GLenum dstType = _mesa_get_format_datatype(dstFormat); |
| |
| if (srcType != GL_INT && srcType != GL_UNSIGNED_INT) { |
| assert(srcType == GL_UNSIGNED_NORMALIZED || |
| srcType == GL_SIGNED_NORMALIZED || |
| srcType == GL_FLOAT); |
| /* Boil any of those types down to GL_FLOAT */ |
| srcType = GL_FLOAT; |
| } |
| |
| if (dstType != GL_INT && dstType != GL_UNSIGNED_INT) { |
| assert(dstType == GL_UNSIGNED_NORMALIZED || |
| dstType == GL_SIGNED_NORMALIZED || |
| dstType == GL_FLOAT); |
| /* Boil any of those types down to GL_FLOAT */ |
| dstType = GL_FLOAT; |
| } |
| |
| return srcType == dstType; |
| } |
| |
| |
| static GLboolean |
| compatible_resolve_formats(const struct gl_renderbuffer *readRb, |
| const struct gl_renderbuffer *drawRb) |
| { |
| GLenum readFormat, drawFormat; |
| |
| /* The simple case where we know the backing Mesa formats are the same. |
| */ |
| if (_mesa_get_srgb_format_linear(readRb->Format) == |
| _mesa_get_srgb_format_linear(drawRb->Format)) { |
| return GL_TRUE; |
| } |
| |
| /* The Mesa formats are different, so we must check whether the internal |
| * formats are compatible. |
| * |
| * Under some circumstances, the user may request e.g. two GL_RGBA8 |
| * textures and get two entirely different Mesa formats like RGBA8888 and |
| * ARGB8888. Drivers behaving like that should be able to cope with |
| * non-matching formats by themselves, because it's not the user's fault. |
| * |
| * Blits between linear and sRGB formats are also allowed. |
| */ |
| readFormat = _mesa_get_nongeneric_internalformat(readRb->InternalFormat); |
| drawFormat = _mesa_get_nongeneric_internalformat(drawRb->InternalFormat); |
| readFormat = _mesa_get_linear_internalformat(readFormat); |
| drawFormat = _mesa_get_linear_internalformat(drawFormat); |
| |
| if (readFormat == drawFormat) { |
| return GL_TRUE; |
| } |
| |
| return GL_FALSE; |
| } |
| |
| static GLboolean |
| is_valid_blit_filter(const struct gl_context *ctx, GLenum filter) |
| { |
| switch (filter) { |
| case GL_NEAREST: |
| case GL_LINEAR: |
| return true; |
| case GL_SCALED_RESOLVE_FASTEST_EXT: |
| case GL_SCALED_RESOLVE_NICEST_EXT: |
| return ctx->Extensions.EXT_framebuffer_multisample_blit_scaled; |
| default: |
| return false; |
| } |
| } |
| |
| /** |
| * 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_BlitFramebuffer(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; |
| GET_CURRENT_CONTEXT(ctx); |
| |
| FLUSH_VERTICES(ctx, 0); |
| |
| if (MESA_VERBOSE & VERBOSE_API) |
| _mesa_debug(ctx, |
| "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n", |
| srcX0, srcY0, srcX1, srcY1, |
| dstX0, dstY0, dstX1, dstY1, |
| mask, _mesa_lookup_enum_by_nr(filter)); |
| |
| 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 (!is_valid_blit_filter(ctx, filter)) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(%s)", |
| _mesa_lookup_enum_by_nr(filter)); |
| return; |
| } |
| |
| if ((filter == GL_SCALED_RESOLVE_FASTEST_EXT || |
| filter == GL_SCALED_RESOLVE_NICEST_EXT) && |
| (readFb->Visual.samples == 0 || drawFb->Visual.samples > 0)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT(%s)", |
| _mesa_lookup_enum_by_nr(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) { |
| const GLuint numColorDrawBuffers = ctx->DrawBuffer->_NumColorDrawBuffers; |
| const struct gl_renderbuffer *colorReadRb = readFb->_ColorReadBuffer; |
| const struct gl_renderbuffer *colorDrawRb = NULL; |
| GLuint i; |
| |
| /* From the EXT_framebuffer_object spec: |
| * |
| * "If a buffer is specified in <mask> and does not exist in both |
| * the read and draw framebuffers, the corresponding bit is silently |
| * ignored." |
| */ |
| if (!colorReadRb || numColorDrawBuffers == 0) { |
| mask &= ~GL_COLOR_BUFFER_BIT; |
| } |
| else { |
| for (i = 0; i < numColorDrawBuffers; i++) { |
| colorDrawRb = ctx->DrawBuffer->_ColorDrawBuffers[i]; |
| if (!colorDrawRb) |
| continue; |
| |
| /* Page 193 (page 205 of the PDF) in section 4.3.2 of the OpenGL |
| * ES 3.0.1 spec says: |
| * |
| * "If the source and destination buffers are identical, an |
| * INVALID_OPERATION error is generated. Different mipmap |
| * levels of a texture, different layers of a three- |
| * dimensional texture or two-dimensional array texture, and |
| * different faces of a cube map texture do not constitute |
| * identical buffers." |
| */ |
| if (_mesa_is_gles3(ctx) && (colorDrawRb == colorReadRb)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebuffer(source and destination color " |
| "buffer cannot be the same)"); |
| return; |
| } |
| |
| if (!compatible_color_datatypes(colorReadRb->Format, |
| colorDrawRb->Format)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebufferEXT(color buffer datatypes mismatch)"); |
| return; |
| } |
| /* extra checks for multisample copies... */ |
| if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) { |
| /* color formats must match */ |
| if (!compatible_resolve_formats(colorReadRb, colorDrawRb)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebufferEXT(bad src/dst multisample pixel formats)"); |
| return; |
| } |
| } |
| } |
| if (filter != GL_NEAREST) { |
| /* From EXT_framebuffer_multisample_blit_scaled specification: |
| * "Calling BlitFramebuffer will result in an INVALID_OPERATION error |
| * if filter is not NEAREST and read buffer contains integer data." |
| */ |
| GLenum type = _mesa_get_format_datatype(colorReadRb->Format); |
| if (type == GL_INT || type == GL_UNSIGNED_INT) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebufferEXT(integer color type)"); |
| return; |
| } |
| } |
| } |
| } |
| |
| if (mask & GL_STENCIL_BUFFER_BIT) { |
| struct gl_renderbuffer *readRb = |
| readFb->Attachment[BUFFER_STENCIL].Renderbuffer; |
| struct gl_renderbuffer *drawRb = |
| drawFb->Attachment[BUFFER_STENCIL].Renderbuffer; |
| |
| /* From the EXT_framebuffer_object spec: |
| * |
| * "If a buffer is specified in <mask> and does not exist in both |
| * the read and draw framebuffers, the corresponding bit is silently |
| * ignored." |
| */ |
| if ((readRb == NULL) || (drawRb == NULL)) { |
| mask &= ~GL_STENCIL_BUFFER_BIT; |
| } |
| else { |
| int read_z_bits, draw_z_bits; |
| |
| if (_mesa_is_gles3(ctx) && (drawRb == readRb)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebuffer(source and destination stencil " |
| "buffer cannot be the same)"); |
| return; |
| } |
| |
| if (_mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) != |
| _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) { |
| /* There is no need to check the stencil datatype here, because |
| * there is only one: GL_UNSIGNED_INT. |
| */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebuffer(stencil attachment format mismatch)"); |
| return; |
| } |
| |
| read_z_bits = _mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS); |
| draw_z_bits = _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS); |
| |
| /* If both buffers also have depth data, the depth formats must match |
| * as well. If one doesn't have depth, it's not blitted, so we should |
| * ignore the depth format check. |
| */ |
| if (read_z_bits > 0 && draw_z_bits > 0 && |
| (read_z_bits != draw_z_bits || |
| _mesa_get_format_datatype(readRb->Format) != |
| _mesa_get_format_datatype(drawRb->Format))) { |
| |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebuffer" |
| "(stencil attachment depth format mismatch)"); |
| return; |
| } |
| } |
| } |
| |
| if (mask & GL_DEPTH_BUFFER_BIT) { |
| struct gl_renderbuffer *readRb = |
| readFb->Attachment[BUFFER_DEPTH].Renderbuffer; |
| struct gl_renderbuffer *drawRb = |
| drawFb->Attachment[BUFFER_DEPTH].Renderbuffer; |
| |
| /* From the EXT_framebuffer_object spec: |
| * |
| * "If a buffer is specified in <mask> and does not exist in both |
| * the read and draw framebuffers, the corresponding bit is silently |
| * ignored." |
| */ |
| if ((readRb == NULL) || (drawRb == NULL)) { |
| mask &= ~GL_DEPTH_BUFFER_BIT; |
| } |
| else { |
| int read_s_bit, draw_s_bit; |
| |
| if (_mesa_is_gles3(ctx) && (drawRb == readRb)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebuffer(source and destination depth " |
| "buffer cannot be the same)"); |
| return; |
| } |
| |
| if ((_mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) != |
| _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) || |
| (_mesa_get_format_datatype(readRb->Format) != |
| _mesa_get_format_datatype(drawRb->Format))) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebuffer(depth attachment format mismatch)"); |
| return; |
| } |
| |
| read_s_bit = _mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS); |
| draw_s_bit = _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS); |
| |
| /* If both buffers also have stencil data, the stencil formats must |
| * match as well. If one doesn't have stencil, it's not blitted, so |
| * we should ignore the stencil format check. |
| */ |
| if (read_s_bit > 0 && draw_s_bit > 0 && read_s_bit != draw_s_bit) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebuffer" |
| "(depth attachment stencil bits mismatch)"); |
| return; |
| } |
| } |
| } |
| |
| |
| if (_mesa_is_gles3(ctx)) { |
| /* Page 194 (page 206 of the PDF) in section 4.3.2 of the OpenGL ES |
| * 3.0.1 spec says: |
| * |
| * "If SAMPLE_BUFFERS for the draw framebuffer is greater than zero, |
| * an INVALID_OPERATION error is generated." |
| */ |
| if (drawFb->Visual.samples > 0) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebuffer(destination samples must be 0)"); |
| return; |
| } |
| |
| /* Page 194 (page 206 of the PDF) in section 4.3.2 of the OpenGL ES |
| * 3.0.1 spec says: |
| * |
| * "If SAMPLE_BUFFERS for the read framebuffer is greater than zero, |
| * no copy is performed and an INVALID_OPERATION error is generated |
| * if the formats of the read and draw framebuffers are not |
| * identical or if the source and destination rectangles are not |
| * defined with the same (X0, Y0) and (X1, Y1) bounds." |
| * |
| * The format check was made above because desktop OpenGL has the same |
| * requirement. |
| */ |
| if (readFb->Visual.samples > 0 |
| && (srcX0 != dstX0 || srcY0 != dstY0 |
| || srcX1 != dstX1 || srcY1 != dstY1)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebuffer(bad src/dst multisample region)"); |
| return; |
| } |
| } else { |
| 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) && |
| (filter == GL_NEAREST || filter == GL_LINEAR)) { |
| /* src and dest region sizes must be the same */ |
| if (abs(srcX1 - srcX0) != abs(dstX1 - dstX0) || |
| abs(srcY1 - srcY0) != abs(dstY1 - dstY0)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glBlitFramebufferEXT(bad src/dst multisample region sizes)"); |
| return; |
| } |
| } |
| } |
| |
| /* Debug code */ |
| if (DEBUG_BLIT) { |
| const struct gl_renderbuffer *colorReadRb = readFb->_ColorReadBuffer; |
| const struct gl_renderbuffer *colorDrawRb = NULL; |
| GLuint i = 0; |
| |
| 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"); |
| |
| /* Print all active color render buffers */ |
| for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) { |
| colorDrawRb = ctx->DrawBuffer->_ColorDrawBuffers[i]; |
| if (!colorDrawRb) |
| continue; |
| |
| 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"); |
| } |
| } |
| } |
| |
| if (!mask || |
| (srcX1 - srcX0) == 0 || (srcY1 - srcY0) == 0 || |
| (dstX1 - dstX0) == 0 || (dstY1 - dstY0) == 0) { |
| return; |
| } |
| |
| ASSERT(ctx->Driver.BlitFramebuffer); |
| ctx->Driver.BlitFramebuffer(ctx, |
| srcX0, srcY0, srcX1, srcY1, |
| dstX0, dstY0, dstX1, dstY1, |
| mask, filter); |
| } |
| |
| |
| static void |
| invalidate_framebuffer_storage(GLenum target, GLsizei numAttachments, |
| const GLenum *attachments, GLint x, GLint y, |
| GLsizei width, GLsizei height, const char *name) |
| { |
| int i; |
| struct gl_framebuffer *fb; |
| GET_CURRENT_CONTEXT(ctx); |
| |
| fb = get_framebuffer_target(ctx, target); |
| if (!fb) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", name); |
| return; |
| } |
| |
| if (numAttachments < 0) { |
| _mesa_error(ctx, GL_INVALID_VALUE, |
| "%s(numAttachments < 0)", name); |
| return; |
| } |
| |
| /* The GL_ARB_invalidate_subdata spec says: |
| * |
| * "If an attachment is specified that does not exist in the |
| * framebuffer bound to <target>, it is ignored." |
| * |
| * It also says: |
| * |
| * "If <attachments> contains COLOR_ATTACHMENTm and m is greater than |
| * or equal to the value of MAX_COLOR_ATTACHMENTS, then the error |
| * INVALID_OPERATION is generated." |
| * |
| * No mention is made of GL_AUXi being out of range. Therefore, we allow |
| * any enum that can be allowed by the API (OpenGL ES 3.0 has a different |
| * set of retrictions). |
| */ |
| for (i = 0; i < numAttachments; i++) { |
| if (_mesa_is_winsys_fbo(fb)) { |
| switch (attachments[i]) { |
| case GL_ACCUM: |
| case GL_AUX0: |
| case GL_AUX1: |
| case GL_AUX2: |
| case GL_AUX3: |
| /* Accumulation buffers and auxilary buffers were removed in |
| * OpenGL 3.1, and they never existed in OpenGL ES. |
| */ |
| if (ctx->API != API_OPENGL_COMPAT) |
| goto invalid_enum; |
| break; |
| case GL_COLOR: |
| case GL_DEPTH: |
| case GL_STENCIL: |
| break; |
| case GL_BACK_LEFT: |
| case GL_BACK_RIGHT: |
| case GL_FRONT_LEFT: |
| case GL_FRONT_RIGHT: |
| if (!_mesa_is_desktop_gl(ctx)) |
| goto invalid_enum; |
| break; |
| default: |
| goto invalid_enum; |
| } |
| } else { |
| switch (attachments[i]) { |
| case GL_DEPTH_ATTACHMENT: |
| case GL_STENCIL_ATTACHMENT: |
| break; |
| case GL_COLOR_ATTACHMENT0: |
| case GL_COLOR_ATTACHMENT1: |
| case GL_COLOR_ATTACHMENT2: |
| case GL_COLOR_ATTACHMENT3: |
| case GL_COLOR_ATTACHMENT4: |
| case GL_COLOR_ATTACHMENT5: |
| case GL_COLOR_ATTACHMENT6: |
| case GL_COLOR_ATTACHMENT7: |
| case GL_COLOR_ATTACHMENT8: |
| case GL_COLOR_ATTACHMENT9: |
| case GL_COLOR_ATTACHMENT10: |
| case GL_COLOR_ATTACHMENT11: |
| case GL_COLOR_ATTACHMENT12: |
| case GL_COLOR_ATTACHMENT13: |
| case GL_COLOR_ATTACHMENT14: |
| case GL_COLOR_ATTACHMENT15: { |
| unsigned k = attachments[i] - GL_COLOR_ATTACHMENT0; |
| if (k >= ctx->Const.MaxColorAttachments) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "%s(attachment >= max. color attachments)", name); |
| return; |
| } |
| break; |
| } |
| default: |
| goto invalid_enum; |
| } |
| } |
| } |
| |
| /* We don't actually do anything for this yet. Just return after |
| * validating the parameters and generating the required errors. |
| */ |
| return; |
| |
| invalid_enum: |
| _mesa_error(ctx, GL_INVALID_ENUM, "%s(attachment)", name); |
| return; |
| } |
| |
| void GLAPIENTRY |
| _mesa_InvalidateSubFramebuffer(GLenum target, GLsizei numAttachments, |
| const GLenum *attachments, GLint x, GLint y, |
| GLsizei width, GLsizei height) |
| { |
| invalidate_framebuffer_storage(target, numAttachments, attachments, |
| x, y, width, height, |
| "glInvalidateSubFramebuffer"); |
| } |
| |
| void GLAPIENTRY |
| _mesa_InvalidateFramebuffer(GLenum target, GLsizei numAttachments, |
| const GLenum *attachments) |
| { |
| /* The GL_ARB_invalidate_subdata spec says: |
| * |
| * "The command |
| * |
| * void InvalidateFramebuffer(enum target, |
| * sizei numAttachments, |
| * const enum *attachments); |
| * |
| * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>, |
| * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>, |
| * <MAX_VIEWPORT_DIMS[1]> respectively." |
| */ |
| invalidate_framebuffer_storage(target, numAttachments, attachments, |
| 0, 0, MAX_VIEWPORT_WIDTH, MAX_VIEWPORT_HEIGHT, |
| "glInvalidateFramebuffer"); |
| } |
| |
| void GLAPIENTRY |
| _mesa_DiscardFramebufferEXT(GLenum target, GLsizei numAttachments, |
| const GLenum *attachments) |
| { |
| struct gl_framebuffer *fb; |
| GLint i; |
| |
| GET_CURRENT_CONTEXT(ctx); |
| |
| fb = get_framebuffer_target(ctx, target); |
| if (!fb) { |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glDiscardFramebufferEXT(target %s)", |
| _mesa_lookup_enum_by_nr(target)); |
| return; |
| } |
| |
| if (numAttachments < 0) { |
| _mesa_error(ctx, GL_INVALID_VALUE, |
| "glDiscardFramebufferEXT(numAttachments < 0)"); |
| return; |
| } |
| |
| for (i = 0; i < numAttachments; i++) { |
| switch (attachments[i]) { |
| case GL_COLOR: |
| case GL_DEPTH: |
| case GL_STENCIL: |
| if (_mesa_is_user_fbo(fb)) |
| goto invalid_enum; |
| break; |
| case GL_COLOR_ATTACHMENT0: |
| case GL_DEPTH_ATTACHMENT: |
| case GL_STENCIL_ATTACHMENT: |
| if (_mesa_is_winsys_fbo(fb)) |
| goto invalid_enum; |
| break; |
| default: |
| goto invalid_enum; |
| } |
| } |
| |
| if (ctx->Driver.DiscardFramebuffer) |
| ctx->Driver.DiscardFramebuffer(ctx, target, numAttachments, attachments); |
| |
| return; |
| |
| invalid_enum: |
| _mesa_error(ctx, GL_INVALID_ENUM, |
| "glDiscardFramebufferEXT(attachment %s)", |
| _mesa_lookup_enum_by_nr(attachments[i])); |
| } |