/* * Mesa 3-D graphics library * Version: 7.1 * * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * 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 #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) || (ctx->Extensions.EXT_framebuffer_blit && _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 , then * 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 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; } /** * 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]; if (!texImage) return; 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; } rb->_BaseFormat = texImage->_BaseFormat; rb->Format = texImage->TexFormat; rb->InternalFormat = texImage->InternalFormat; rb->Width = texImage->Width2; rb->Height = texImage->Height2; rb->NumSamples = texImage->NumSamples; rb->TexImage = texImage; 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(const char *msg, int 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, gl_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"); printf("texobj = %u\n", texObj->Name); printf("level = %d\n", att->TextureLevel); att->Complete = GL_FALSE; return; } if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) { att_incomplete("bad z offset"); att->Complete = GL_FALSE; return; } baseFormat = _mesa_get_format_base_format(texImage->TexFormat); if (format == GL_COLOR) { if (!_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.EXT_packed_depth_stencil && ctx->Extensions.ARB_depth_texture && baseFormat == GL_DEPTH_STENCIL_EXT) { /* OK */ } else { att->Complete = GL_FALSE; att_incomplete("bad depth format"); return; } } else { ASSERT(format == GL_STENCIL); if (ctx->Extensions.EXT_packed_depth_stencil && ctx->Extensions.ARB_depth_texture && baseFormat == GL_DEPTH_STENCIL_EXT) { /* OK */ } else { /* no such thing as stencil-only textures */ att_incomplete("illegal stencil texture"); att->Complete = GL_FALSE; return; } } } else if (att->Type == GL_RENDERBUFFER_EXT) { const GLenum baseFormat = _mesa_get_format_base_format(att->Renderbuffer->Format); ASSERT(att->Renderbuffer); if (!att->Renderbuffer->InternalFormat || att->Renderbuffer->Width < 1 || att->Renderbuffer->Height < 1) { att_incomplete("0x0 renderbuffer"); att->Complete = GL_FALSE; return; } if (format == GL_COLOR) { if (!_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 (ctx->Extensions.EXT_packed_depth_stencil && baseFormat == GL_DEPTH_STENCIL_EXT) { /* OK */ } else { att_incomplete("bad renderbuffer depth format"); att->Complete = GL_FALSE; return; } } else { assert(format == GL_STENCIL); if (baseFormat == GL_STENCIL_INDEX) { /* OK */ } else if (ctx->Extensions.EXT_packed_depth_stencil && baseFormat == GL_DEPTH_STENCIL_EXT) { /* OK */ } else { att->Complete = GL_FALSE; att_incomplete("bad renderbuffer stencil format"); return; } } } else { ASSERT(att->Type == GL_NONE); /* complete */ return; } } /** * Test if the given framebuffer object is complete and update its * Status field with the results. * Calls the ctx->Driver.ValidateFramebuffer() function to allow the * driver to make hardware-specific validation/completeness checks. * Also update the framebuffer's Width and Height fields if the * framebuffer is complete. */ void _mesa_test_framebuffer_completeness(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; bool layer_count_valid = false; GLuint layer_count = 0, att_layer_count; 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; gl_format attFormat; /* * XXX for ARB_fbo, only check color buffers that are named by * GL_READ_BUFFER and GL_DRAW_BUFFERi. */ /* check for attachment completeness */ if (i == -2) { att = &fb->Attachment[BUFFER_DEPTH]; test_attachment_completeness(ctx, GL_DEPTH, att); if (!att->Complete) { fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT; fbo_incomplete("depth attachment incomplete", -1); return; } } else if (i == -1) { att = &fb->Attachment[BUFFER_STENCIL]; test_attachment_completeness(ctx, GL_STENCIL, att); if (!att->Complete) { fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT; fbo_incomplete("stencil attachment incomplete", -1); return; } } else { att = &fb->Attachment[BUFFER_COLOR0 + i]; test_attachment_completeness(ctx, GL_COLOR, att); if (!att->Complete) { fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT; fbo_incomplete("color attachment incomplete", i); return; } } /* get width, height, format of the renderbuffer/texture */ if (att->Type == GL_TEXTURE) { const struct gl_texture_image *texImg = att->Renderbuffer->TexImage; 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("texture attachment incomplete", -1); return; } if (numSamples < 0) numSamples = texImg->NumSamples; else if (numSamples != texImg->NumSamples) { fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE; fbo_incomplete("inconsistent sample count", -1); return; } if (fixedSampleLocations < 0) fixedSampleLocations = texImg->FixedSampleLocations; else if (fixedSampleLocations != texImg->FixedSampleLocations) { fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE; fbo_incomplete("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("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("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("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("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("unsupported renderbuffer format", i); return; } /* Check that layered rendering is consistent. */ att_layer_count = att->Layered ? att->Renderbuffer->Depth : 0; if (!layer_count_valid) { layer_count = att_layer_count; layer_count_valid = true; } else if (layer_count != att_layer_count) { if (layer_count == 0 || att_layer_count == 0) { fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS; fbo_incomplete("framebuffer attachment layer mode is inconsistent", i); } else { fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_LAYER_COUNT_ARB; fbo_incomplete("framebuffer attachment layer count is inconsistent", i); } return; } } fb->Layered = layer_count > 0; 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("missing drawbuffer", j); return; } } } /* Check that the ReadBuffer is present */ if (fb->ColorReadBuffer != GL_NONE) { const struct gl_renderbuffer_attachment *att = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer); assert(att); if (att->Type == GL_NONE) { fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT; fbo_incomplete("missing readbuffer", -1); return; } } } if (numImages == 0) { fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT; fbo_incomplete("no attachments", -1); return; } /* Provisionally set status = COMPLETE ... */ fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT; /* ... but the driver may say the FB is incomplete. * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED * if anything. */ if (ctx->Driver.ValidateFramebuffer) { ctx->Driver.ValidateFramebuffer(ctx, fb); if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { fbo_incomplete("driver marked FBO as incomplete", -1); } } if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) { /* * Note that if ARB_framebuffer_object is supported and the attached * renderbuffers/textures are different sizes, the framebuffer * width/height will be set to the smallest width/height. */ fb->Width = minWidth; fb->Height = minHeight; /* finally, update the visual info for the framebuffer */ _mesa_update_framebuffer_visual(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; } void GLAPIENTRY _mesa_BindRenderbuffer(GLenum target, GLuint renderbuffer) { 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 && _mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_framebuffer_object) { /* All RB IDs must be Gen'd */ _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)"); return; } if (!newRb) { /* create new renderbuffer object */ newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer); if (!newRb) { _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT"); return; } ASSERT(newRb->AllocStorage); _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb); newRb->RefCount = 1; /* referenced by hash table */ } } else { newRb = NULL; } ASSERT(newRb != &DummyRenderbuffer); _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb); } /** * If the given renderbuffer is anywhere attached to the framebuffer, detach * the renderbuffer. * This is used when a renderbuffer object is deleted. * The spec calls for unbinding. */ static void detach_renderbuffer(struct gl_context *ctx, struct gl_framebuffer *fb, struct gl_renderbuffer *rb) { GLuint i; for (i = 0; i < BUFFER_COUNT; i++) { if (fb->Attachment[i].Renderbuffer == rb) { _mesa_remove_attachment(ctx, &fb->Attachment[i]); } } invalidate_framebuffer(fb); } void GLAPIENTRY _mesa_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); } if (_mesa_is_user_fbo(ctx->DrawBuffer)) { detach_renderbuffer(ctx, ctx->DrawBuffer, rb); } if (_mesa_is_user_fbo(ctx->ReadBuffer) && ctx->ReadBuffer != ctx->DrawBuffer) { detach_renderbuffer(ctx, ctx->ReadBuffer, rb); } /* Remove from hash table immediately, to free the ID. * But the object will not be freed until it's no longer * referenced anywhere else. */ _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]); if (rb != &DummyRenderbuffer) { /* no longer referenced by hash table */ _mesa_reference_renderbuffer(&rb, NULL); } } } } } void GLAPIENTRY _mesa_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_EXT: return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_packed_depth_stencil ? GL_DEPTH_STENCIL_EXT : 0; case GL_DEPTH24_STENCIL8_EXT: return ctx->Extensions.EXT_packed_depth_stencil ? GL_DEPTH_STENCIL_EXT : 0; 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_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, gl_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) { 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); } } } } void GLAPIENTRY _mesa_BindFramebuffer(GLenum target, GLuint framebuffer) { struct gl_framebuffer *newDrawFb, *newReadFb; struct gl_framebuffer *oldDrawFb, *oldReadFb; GLboolean bindReadBuf, bindDrawBuf; GET_CURRENT_CONTEXT(ctx); #ifdef DEBUG if (ctx->Extensions.ARB_framebuffer_object) { ASSERT(ctx->Extensions.EXT_framebuffer_object); ASSERT(ctx->Extensions.EXT_framebuffer_blit); } #endif if (!ctx->Extensions.EXT_framebuffer_object) { _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebufferEXT(unsupported)"); return; } switch (target) { case GL_DRAW_FRAMEBUFFER_EXT: if (!ctx->Extensions.EXT_framebuffer_blit) { _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)"); return; } bindDrawBuf = GL_TRUE; bindReadBuf = GL_FALSE; break; case GL_READ_FRAMEBUFFER_EXT: if (!ctx->Extensions.EXT_framebuffer_blit) { _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)"); return; } bindDrawBuf = GL_FALSE; bindReadBuf = GL_TRUE; break; 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 && _mesa_is_desktop_gl(ctx) && ctx->Extensions.ARB_framebuffer_object) { /* All FBO IDs must be Gen'd */ _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)"); return; } if (!newDrawFb) { /* create new framebuffer object */ newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer); if (!newDrawFb) { _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT"); return; } _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb); } newReadFb = newDrawFb; } else { /* Binding the window system framebuffer (which was originally set * with MakeCurrent). */ newDrawFb = ctx->WinSysDrawBuffer; newReadFb = ctx->WinSysReadBuffer; } ASSERT(newDrawFb); ASSERT(newDrawFb != &DummyFramebuffer); /* save pointers to current/old framebuffers */ oldDrawFb = ctx->DrawBuffer; oldReadFb = ctx->ReadBuffer; /* check if really changing bindings */ if (oldDrawFb == newDrawFb) bindDrawBuf = GL_FALSE; if (oldReadFb == newReadFb) bindReadBuf = GL_FALSE; /* * OK, now bind the new Draw/Read framebuffers, if they're changing. * * We also check if we're beginning and/or ending render-to-texture. * When a framebuffer with texture attachments is unbound, call * ctx->Driver.FinishRenderTexture(). * When a framebuffer with texture attachments is bound, call * ctx->Driver.RenderTexture(). * * Note that if the ReadBuffer has texture attachments we don't consider * that a render-to-texture case. */ if (bindReadBuf) { FLUSH_VERTICES(ctx, _NEW_BUFFERS); /* check if old readbuffer was render-to-texture */ check_end_texture_render(ctx, oldReadFb); _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb); } if (bindDrawBuf) { FLUSH_VERTICES(ctx, _NEW_BUFFERS); /* check if old 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_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 (ctx->Extensions.EXT_framebuffer_blit) { /* separate draw/read binding points */ if (fb == ctx->DrawBuffer) { /* bind default */ ASSERT(fb->RefCount >= 2); _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT, 0); } if (fb == ctx->ReadBuffer) { /* bind default */ ASSERT(fb->RefCount >= 2); _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER_EXT, 0); } } else { /* only one binding point for read/draw buffers */ if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) { /* bind default */ ASSERT(fb->RefCount >= 2); _mesa_BindFramebuffer(GL_FRAMEBUFFER_EXT, 0); } } /* remove from hash table immediately, to free the ID */ _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]); if (fb != &DummyFramebuffer) { /* But the object will not be freed until it's no longer * bound in any context. */ _mesa_reference_framebuffer(&fb, NULL); } } } } } void GLAPIENTRY _mesa_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)) { /* The window system / default framebuffer is always complete */ return GL_FRAMEBUFFER_COMPLETE_EXT; } /* No need to flush here */ if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) { _mesa_test_framebuffer_completeness(ctx, buffer); } return buffer->_Status; } /** * 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(). * Note: glFramebufferTextureLayerEXT() has no textarget parameter so we'll * get textarget=0 in that case. */ 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 textarget == 0 it means 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 (ctx->Version >= 32 || ctx->Extensions.ARB_geometry_shader4) { 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 { gl_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; 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(gl_format srcFormat, gl_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; } /** * 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 (filter != GL_NEAREST && filter != GL_LINEAR) { _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)"); return; } if (mask & ~legalMaskBits) { _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)"); return; } /* depth/stencil must be blitted with nearest filtering */ if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT)) && filter != GL_NEAREST) { _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)"); return; } /* get color read/draw renderbuffers */ if (mask & GL_COLOR_BUFFER_BIT) { 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 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_LINEAR) { /* 3.1 spec, page 199: * "Calling BlitFramebuffer will result in an INVALID_OPERATION error * if filter is LINEAR 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 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 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) { /* 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; } } } if (!ctx->Extensions.EXT_framebuffer_blit) { _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT"); 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 , it is ignored." * * It also says: * * "If 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; } } 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 , , * , equal to 0, 0, , * 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])); }