mesa: new driver meta-ops module
Implement glClear() in terms of quad rendering, implement glBlitFramebuffer() in terms of glCopyTexImage2D + textured quad, etc. There have been several places in the drivers where we've implemented meta rendering similar to this. This is an effort to do it in a more portable and more efficient form. The _mesa_meta_begin/end() functions act like glPush/PopAttrib() but are lighter-weight. Plus, _mesa_meta_begin() resets GL state back to default values (texturing off, identity vertex transform, etc) so the meta drawing functions don't have to worry about it. For now only _mesa_mesa_blit_framebuffer() and _mesa_meta_clear() are implemented. glDrawPixels() and glCopyPixels() would be the next candidates.
This commit is contained in:
Brian Paul
parent
e9d9dab0cd
commit
33a838beb9
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@ -0,0 +1,814 @@
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/*
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* Mesa 3-D graphics library
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* Version: 7.6
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*
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* Copyright (C) 2009 VMware, Inc. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* Meta operations. Some GL operations can be expressed in terms of
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* other GL operations. For example, glBlitFramebuffer() can be done
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* with texture mapping and glClear() can be done with polygon rendering.
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*
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* \author Brian Paul
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*/
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#include "main/glheader.h"
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#include "main/mtypes.h"
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#include "main/imports.h"
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#include "main/arrayobj.h"
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#include "main/blend.h"
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#include "main/bufferobj.h"
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#include "main/depth.h"
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#include "main/enable.h"
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#include "main/macros.h"
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#include "main/matrix.h"
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#include "main/polygon.h"
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#include "main/scissor.h"
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#include "main/shaders.h"
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#include "main/stencil.h"
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#include "main/texobj.h"
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#include "main/texenv.h"
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#include "main/teximage.h"
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#include "main/texparam.h"
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#include "main/texstate.h"
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#include "main/varray.h"
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#include "main/viewport.h"
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#include "shader/program.h"
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#include "swrast/swrast.h"
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#include "drivers/common/meta.h"
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/**
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* State which we may save/restore across meta ops.
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* XXX this may be incomplete...
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*/
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struct save_state
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{
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GLbitfield SavedState; /**< bitmask of META_* flags */
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/** META_ALPHA_TEST */
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GLboolean AlphaEnabled;
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/** META_BLEND */
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GLboolean BlendEnabled;
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GLboolean ColorLogicOpEnabled;
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/** META_COLOR_MASK */
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GLubyte ColorMask[4];
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/** META_DEPTH_TEST */
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struct gl_depthbuffer_attrib Depth;
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/** META_PIXELSTORE */
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/* XXX / TO-DO */
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/** META_RASTERIZATION */
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GLenum FrontPolygonMode, BackPolygonMode;
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GLboolean PolygonOffset;
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GLboolean PolygonSmooth;
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GLboolean PolygonStipple;
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GLboolean PolygonCull;
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/** META_SCISSOR */
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struct gl_scissor_attrib Scissor;
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/** META_SHADER */
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GLboolean VertexProgramEnabled;
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struct gl_vertex_program *VertexProgram;
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GLboolean FragmentProgramEnabled;
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struct gl_fragment_program *FragmentProgram;
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GLuint Shader;
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/** META_STENCIL_TEST */
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struct gl_stencil_attrib Stencil;
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/** META_TRANSFORM */
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GLenum MatrixMode;
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GLfloat ModelviewMatrix[16];
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GLfloat ProjectionMatrix[16];
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GLbitfield ClipPlanesEnabled;
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/** META_TEXTURE */
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GLuint ActiveUnit;
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GLuint ClientActiveUnit;
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/** for unit[0] only */
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struct gl_texture_object *CurrentTexture[NUM_TEXTURE_TARGETS];
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/** mask of TEXTURE_2D_BIT, etc */
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GLbitfield TexEnabled[MAX_TEXTURE_UNITS];
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GLbitfield TexGenEnabled[MAX_TEXTURE_UNITS];
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GLuint EnvMode; /* unit[0] only */
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/** META_VERTEX */
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struct gl_array_object *ArrayObj;
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struct gl_buffer_object *ArrayBufferObj;
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/** META_VIEWPORT */
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GLint ViewportX, ViewportY, ViewportW, ViewportH;
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GLclampd DepthNear, DepthFar;
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/** Miscellaneous (always disabled) */
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GLboolean Lighting;
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GLboolean Fog;
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};
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/**
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* State for glBlitFramebufer()
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*/
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struct blit_state
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{
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GLuint TexObj;
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GLuint ArrayObj;
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GLuint VBO;
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GLfloat verts[4][4]; /** four verts of X,Y,S,T */
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};
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/**
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* State for glClear()
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*/
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struct clear_state
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{
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GLuint ArrayObj;
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GLuint VBO;
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GLfloat verts[4][7]; /** four verts of X,Y,Z,R,G,B,A */
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};
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/**
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* All per-context meta state.
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*/
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struct gl_meta_state
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{
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struct save_state Save; /**< state saved during meta-ops */
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struct blit_state Blit; /**< For _mesa_meta_blit_framebuffer() */
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struct clear_state Clear; /**< For _mesa_meta_clear() */
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/* other possible meta-ops:
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* glDrawPixels()
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* glCopyPixels()
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* glBitmap()
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*/
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};
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/**
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* Initialize meta-ops for a context.
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* To be called once during context creation.
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*/
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void
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_mesa_meta_init(GLcontext *ctx)
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{
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ASSERT(!ctx->Meta);
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ctx->Meta = CALLOC_STRUCT(gl_meta_state);
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}
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/**
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* Free context meta-op state.
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* To be called once during context destruction.
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*/
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void
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_mesa_meta_free(GLcontext *ctx)
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{
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struct gl_meta_state *meta = ctx->Meta;
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if (meta->Blit.TexObj) {
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_mesa_DeleteTextures(1, &meta->Blit.TexObj);
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_mesa_DeleteBuffersARB(1, & meta->Blit.VBO);
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_mesa_DeleteVertexArraysAPPLE(1, &meta->Blit.ArrayObj);
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}
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if (meta->Clear.VBO) {
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_mesa_DeleteBuffersARB(1, & meta->Clear.VBO);
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_mesa_DeleteVertexArraysAPPLE(1, &meta->Clear.ArrayObj);
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}
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_mesa_free(ctx->Meta);
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ctx->Meta = NULL;
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}
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/**
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* Enter meta state. This is like a light-weight version of glPushAttrib
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* but it also resets most GL state back to default values.
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*
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* \param state bitmask of META_* flags indicating which attribute groups
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* to save and reset to their defaults
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*/
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static void
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_mesa_meta_begin(GLcontext *ctx, GLbitfield state)
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{
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struct save_state *save = &ctx->Meta->Save;
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save->SavedState = state;
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if (state & META_ALPHA_TEST) {
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save->AlphaEnabled = ctx->Color.AlphaEnabled;
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if (ctx->Color.AlphaEnabled)
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_mesa_Disable(GL_ALPHA_TEST);
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}
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if (state & META_BLEND) {
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save->BlendEnabled = ctx->Color.BlendEnabled;
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if (ctx->Color.BlendEnabled)
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_mesa_Disable(GL_BLEND);
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save->ColorLogicOpEnabled = ctx->Color.ColorLogicOpEnabled;
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if (ctx->Color.ColorLogicOpEnabled)
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_mesa_Disable(GL_COLOR_LOGIC_OP);
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}
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if (state & META_COLOR_MASK) {
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COPY_4V(save->ColorMask, ctx->Color.ColorMask);
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if (!ctx->Color.ColorMask[0] ||
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!ctx->Color.ColorMask[1] ||
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!ctx->Color.ColorMask[2] ||
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!ctx->Color.ColorMask[3])
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_mesa_ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
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}
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if (state & META_DEPTH_TEST) {
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save->Depth = ctx->Depth; /* struct copy */
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if (ctx->Depth.Test)
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_mesa_Disable(GL_DEPTH_TEST);
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}
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if (state & META_RASTERIZATION) {
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save->FrontPolygonMode = ctx->Polygon.FrontMode;
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save->BackPolygonMode = ctx->Polygon.BackMode;
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save->PolygonOffset = ctx->Polygon.OffsetFill;
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save->PolygonSmooth = ctx->Polygon.SmoothFlag;
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save->PolygonStipple = ctx->Polygon.StippleFlag;
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save->PolygonCull = ctx->Polygon.CullFlag;
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_mesa_PolygonMode(GL_FRONT_AND_BACK, GL_FILL);
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_mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL, GL_FALSE);
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_mesa_set_enable(ctx, GL_POLYGON_SMOOTH, GL_FALSE);
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_mesa_set_enable(ctx, GL_POLYGON_STIPPLE, GL_FALSE);
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_mesa_set_enable(ctx, GL_CULL_FACE, GL_FALSE);
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}
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if (state & META_SCISSOR) {
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save->Scissor = ctx->Scissor; /* struct copy */
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}
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if (state & META_SHADER) {
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if (ctx->Extensions.ARB_vertex_program) {
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save->VertexProgramEnabled = ctx->VertexProgram.Enabled;
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save->VertexProgram = ctx->VertexProgram.Current;
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_mesa_set_enable(ctx, GL_VERTEX_PROGRAM_ARB, GL_FALSE);
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}
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if (ctx->Extensions.ARB_fragment_program) {
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save->FragmentProgramEnabled = ctx->FragmentProgram.Enabled;
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save->FragmentProgram = ctx->FragmentProgram.Current;
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_mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_FALSE);
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}
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if (ctx->Extensions.ARB_shader_objects) {
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save->Shader = ctx->Shader.CurrentProgram ?
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ctx->Shader.CurrentProgram->Name : 0;
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_mesa_UseProgramObjectARB(0);
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}
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}
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if (state & META_STENCIL_TEST) {
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save->Stencil = ctx->Stencil; /* struct copy */
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if (ctx->Stencil.Enabled)
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_mesa_Disable(GL_STENCIL_TEST);
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/* NOTE: other stencil state not reset */
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}
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if (state & META_TEXTURE) {
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GLuint u, tgt;
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save->ActiveUnit = ctx->Texture.CurrentUnit;
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save->ClientActiveUnit = ctx->Array.ActiveTexture;
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save->EnvMode = ctx->Texture.Unit[0].EnvMode;
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/* Disable all texture units */
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for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
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save->TexEnabled[u] = ctx->Texture.Unit[u].Enabled;
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save->TexGenEnabled[u] = ctx->Texture.Unit[u].TexGenEnabled;
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_mesa_ActiveTextureARB(GL_TEXTURE0 + u);
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_mesa_set_enable(ctx, GL_TEXTURE_1D, GL_FALSE);
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_mesa_set_enable(ctx, GL_TEXTURE_2D, GL_FALSE);
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_mesa_set_enable(ctx, GL_TEXTURE_3D, GL_FALSE);
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_mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP, GL_FALSE);
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_mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE, GL_FALSE);
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_mesa_set_enable(ctx, GL_TEXTURE_GEN_S, GL_FALSE);
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_mesa_set_enable(ctx, GL_TEXTURE_GEN_T, GL_FALSE);
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_mesa_set_enable(ctx, GL_TEXTURE_GEN_R, GL_FALSE);
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_mesa_set_enable(ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
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}
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/* save current texture objects for unit[0] only */
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for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
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_mesa_reference_texobj(&save->CurrentTexture[tgt],
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ctx->Texture.Unit[0].CurrentTex[tgt]);
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}
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/* set defaults for unit[0] */
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_mesa_ActiveTextureARB(GL_TEXTURE0);
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_mesa_ClientActiveTextureARB(GL_TEXTURE0);
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_mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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_mesa_set_enable(ctx, GL_TEXTURE_GEN_S, GL_FALSE);
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_mesa_set_enable(ctx, GL_TEXTURE_GEN_T, GL_FALSE);
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_mesa_set_enable(ctx, GL_TEXTURE_GEN_R, GL_FALSE);
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_mesa_set_enable(ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
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}
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if (state & META_TRANSFORM) {
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_mesa_memcpy(save->ModelviewMatrix, ctx->ModelviewMatrixStack.Top->m,
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16 * sizeof(GLfloat));
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_mesa_memcpy(save->ProjectionMatrix, ctx->ProjectionMatrixStack.Top->m,
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16 * sizeof(GLfloat));
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save->MatrixMode = ctx->Transform.MatrixMode;
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/* set 1:1 vertex:pixel coordinate transform */
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_mesa_MatrixMode(GL_MODELVIEW);
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_mesa_LoadIdentity();
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_mesa_MatrixMode(GL_PROJECTION);
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_mesa_LoadIdentity();
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_mesa_Ortho(0.0F, ctx->DrawBuffer->Width,
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0.0F, ctx->DrawBuffer->Height,
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-1.0F, 1.0F);
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save->ClipPlanesEnabled = ctx->Transform.ClipPlanesEnabled;
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if (ctx->Transform.ClipPlanesEnabled) {
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GLuint i;
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for (i = 0; i < ctx->Const.MaxClipPlanes; i++) {
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_mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);
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}
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}
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}
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if (state & META_VERTEX) {
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/* save vertex array object state */
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_mesa_reference_array_object(ctx, &save->ArrayObj,
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ctx->Array.ArrayObj);
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_mesa_reference_buffer_object(ctx, &save->ArrayBufferObj,
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ctx->Array.ArrayBufferObj);
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/* set some default state? */
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}
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if (state & META_VIEWPORT) {
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save->ViewportX = ctx->Viewport.X;
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save->ViewportY = ctx->Viewport.Y;
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save->ViewportW = ctx->Viewport.Width;
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save->ViewportH = ctx->Viewport.Height;
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_mesa_Viewport(0, 0, ctx->DrawBuffer->Width, ctx->DrawBuffer->Height);
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save->DepthNear = ctx->Viewport.Near;
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save->DepthFar = ctx->Viewport.Far;
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_mesa_DepthRange(0.0, 1.0);
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}
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/* misc */
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{
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save->Lighting = ctx->Light.Enabled;
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if (ctx->Light.Enabled)
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_mesa_set_enable(ctx, GL_LIGHTING, GL_FALSE);
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save->Fog = ctx->Fog.Enabled;
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if (ctx->Fog.Enabled)
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_mesa_set_enable(ctx, GL_FOG, GL_FALSE);
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}
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}
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/**
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* Leave meta state. This is like a light-weight version of glPopAttrib().
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*/
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static void
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_mesa_meta_end(GLcontext *ctx)
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{
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struct save_state *save = &ctx->Meta->Save;
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const GLbitfield state = save->SavedState;
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if (state & META_ALPHA_TEST) {
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if (ctx->Color.AlphaEnabled != save->AlphaEnabled)
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_mesa_set_enable(ctx, GL_ALPHA_TEST, save->AlphaEnabled);
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}
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if (state & META_BLEND) {
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if (ctx->Color.BlendEnabled != save->BlendEnabled)
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_mesa_set_enable(ctx, GL_BLEND, save->BlendEnabled);
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if (ctx->Color.ColorLogicOpEnabled != save->ColorLogicOpEnabled)
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_mesa_set_enable(ctx, GL_COLOR_LOGIC_OP, save->ColorLogicOpEnabled);
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}
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if (state & META_COLOR_MASK) {
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if (!TEST_EQ_4V(ctx->Color.ColorMask, save->ColorMask))
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_mesa_ColorMask(save->ColorMask[0], save->ColorMask[1],
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save->ColorMask[2], save->ColorMask[3]);
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}
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if (state & META_DEPTH_TEST) {
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if (ctx->Depth.Test != save->Depth.Test)
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_mesa_set_enable(ctx, GL_DEPTH_TEST, save->Depth.Test);
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_mesa_DepthFunc(save->Depth.Func);
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_mesa_DepthMask(save->Depth.Mask);
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}
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if (state & META_RASTERIZATION) {
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_mesa_PolygonMode(GL_FRONT, save->FrontPolygonMode);
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_mesa_PolygonMode(GL_BACK, save->BackPolygonMode);
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_mesa_set_enable(ctx, GL_POLYGON_STIPPLE, save->PolygonStipple);
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_mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL, save->PolygonOffset);
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_mesa_set_enable(ctx, GL_POLYGON_SMOOTH, save->PolygonSmooth);
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_mesa_set_enable(ctx, GL_CULL_FACE, save->PolygonCull);
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}
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if (state & META_SCISSOR) {
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_mesa_set_enable(ctx, GL_SCISSOR_TEST, save->Scissor.Enabled);
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_mesa_Scissor(save->Scissor.X, save->Scissor.Y,
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save->Scissor.Width, save->Scissor.Height);
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||||
}
|
||||
|
||||
if (state & META_SHADER) {
|
||||
if (ctx->Extensions.ARB_vertex_program) {
|
||||
_mesa_set_enable(ctx, GL_VERTEX_PROGRAM_ARB,
|
||||
save->VertexProgramEnabled);
|
||||
_mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current,
|
||||
save->VertexProgram);
|
||||
}
|
||||
|
||||
if (ctx->Extensions.ARB_fragment_program) {
|
||||
_mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB,
|
||||
save->FragmentProgramEnabled);
|
||||
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current,
|
||||
save->FragmentProgram);
|
||||
}
|
||||
|
||||
if (ctx->Extensions.ARB_shader_objects) {
|
||||
_mesa_UseProgramObjectARB(save->Shader);
|
||||
}
|
||||
}
|
||||
|
||||
if (state & META_STENCIL_TEST) {
|
||||
const struct gl_stencil_attrib *stencil = &save->Stencil;
|
||||
|
||||
_mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
|
||||
_mesa_ClearStencil(stencil->Clear);
|
||||
if (ctx->Extensions.EXT_stencil_two_side) {
|
||||
_mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT,
|
||||
stencil->TestTwoSide);
|
||||
_mesa_ActiveStencilFaceEXT(stencil->ActiveFace
|
||||
? GL_BACK : GL_FRONT);
|
||||
}
|
||||
/* front state */
|
||||
_mesa_StencilFuncSeparate(GL_FRONT,
|
||||
stencil->Function[0],
|
||||
stencil->Ref[0],
|
||||
stencil->ValueMask[0]);
|
||||
_mesa_StencilMaskSeparate(GL_FRONT, stencil->WriteMask[0]);
|
||||
_mesa_StencilOpSeparate(GL_FRONT, stencil->FailFunc[0],
|
||||
stencil->ZFailFunc[0],
|
||||
stencil->ZPassFunc[0]);
|
||||
/* back state */
|
||||
_mesa_StencilFuncSeparate(GL_BACK,
|
||||
stencil->Function[1],
|
||||
stencil->Ref[1],
|
||||
stencil->ValueMask[1]);
|
||||
_mesa_StencilMaskSeparate(GL_BACK, stencil->WriteMask[1]);
|
||||
_mesa_StencilOpSeparate(GL_BACK, stencil->FailFunc[1],
|
||||
stencil->ZFailFunc[1],
|
||||
stencil->ZPassFunc[1]);
|
||||
}
|
||||
|
||||
if (state & META_TEXTURE) {
|
||||
GLuint u, tgt;
|
||||
|
||||
ASSERT(ctx->Texture.CurrentUnit == 0);
|
||||
|
||||
/* restore texenv for unit[0] */
|
||||
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, save->EnvMode);
|
||||
|
||||
/* restore texture objects for unit[0] only */
|
||||
for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
|
||||
_mesa_reference_texobj(&ctx->Texture.Unit[0].CurrentTex[tgt],
|
||||
save->CurrentTexture[tgt]);
|
||||
}
|
||||
|
||||
/* Re-enable textures, texgen */
|
||||
for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
|
||||
if (save->TexEnabled[u]) {
|
||||
_mesa_ActiveTextureARB(GL_TEXTURE0 + u);
|
||||
|
||||
if (save->TexEnabled[u] & TEXTURE_1D_BIT)
|
||||
_mesa_set_enable(ctx, GL_TEXTURE_1D, GL_TRUE);
|
||||
if (save->TexEnabled[u] & TEXTURE_2D_BIT)
|
||||
_mesa_set_enable(ctx, GL_TEXTURE_2D, GL_TRUE);
|
||||
if (save->TexEnabled[u] & TEXTURE_3D_BIT)
|
||||
_mesa_set_enable(ctx, GL_TEXTURE_3D, GL_TRUE);
|
||||
if (save->TexEnabled[u] & TEXTURE_CUBE_BIT)
|
||||
_mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP, GL_TRUE);
|
||||
if (save->TexEnabled[u] & TEXTURE_RECT_BIT)
|
||||
_mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE, GL_TRUE);
|
||||
}
|
||||
|
||||
if (save->TexGenEnabled[u]) {
|
||||
_mesa_ActiveTextureARB(GL_TEXTURE0 + u);
|
||||
|
||||
if (save->TexGenEnabled[u] & S_BIT)
|
||||
_mesa_set_enable(ctx, GL_TEXTURE_GEN_S, GL_TRUE);
|
||||
if (save->TexGenEnabled[u] & T_BIT)
|
||||
_mesa_set_enable(ctx, GL_TEXTURE_GEN_T, GL_TRUE);
|
||||
if (save->TexGenEnabled[u] & R_BIT)
|
||||
_mesa_set_enable(ctx, GL_TEXTURE_GEN_R, GL_TRUE);
|
||||
if (save->TexGenEnabled[u] & Q_BIT)
|
||||
_mesa_set_enable(ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
|
||||
}
|
||||
}
|
||||
|
||||
/* restore current unit state */
|
||||
_mesa_ActiveTextureARB(GL_TEXTURE0 + save->ActiveUnit);
|
||||
_mesa_ClientActiveTextureARB(GL_TEXTURE0 + save->ClientActiveUnit);
|
||||
}
|
||||
|
||||
if (state & META_TRANSFORM) {
|
||||
_mesa_MatrixMode(GL_MODELVIEW);
|
||||
_mesa_LoadMatrixf(save->ModelviewMatrix);
|
||||
_mesa_MatrixMode(GL_PROJECTION);
|
||||
_mesa_LoadMatrixf(save->ProjectionMatrix);
|
||||
_mesa_MatrixMode(save->MatrixMode);
|
||||
save->ClipPlanesEnabled = ctx->Transform.ClipPlanesEnabled;
|
||||
if (save->ClipPlanesEnabled) {
|
||||
GLuint i;
|
||||
for (i = 0; i < ctx->Const.MaxClipPlanes; i++) {
|
||||
if (save->ClipPlanesEnabled & (1 << i)) {
|
||||
_mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (state & META_VERTEX) {
|
||||
/* restore vertex buffer object */
|
||||
_mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, save->ArrayBufferObj->Name);
|
||||
_mesa_reference_buffer_object(ctx, &save->ArrayBufferObj, NULL);
|
||||
|
||||
/* restore vertex array object */
|
||||
_mesa_BindVertexArray(save->ArrayObj->Name);
|
||||
_mesa_reference_array_object(ctx, &save->ArrayObj, NULL);
|
||||
}
|
||||
|
||||
if (state & META_VIEWPORT) {
|
||||
_mesa_Viewport(save->ViewportX, save->ViewportY,
|
||||
save->ViewportW, save->ViewportH);
|
||||
_mesa_DepthRange(save->DepthNear, save->DepthFar);
|
||||
}
|
||||
|
||||
/* misc */
|
||||
if (save->Lighting) {
|
||||
_mesa_set_enable(ctx, GL_LIGHTING, GL_TRUE);
|
||||
}
|
||||
if (save->Fog) {
|
||||
_mesa_set_enable(ctx, GL_FOG, GL_TRUE);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Meta implementation of ctx->Driver.BlitFramebuffer() in terms
|
||||
* of texture mapping and polygon rendering.
|
||||
* Note: this function requires GL_ARB_texture_rectangle support.
|
||||
*/
|
||||
void
|
||||
_mesa_meta_blit_framebuffer(GLcontext *ctx,
|
||||
GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
|
||||
GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
|
||||
GLbitfield mask, GLenum filter)
|
||||
{
|
||||
struct blit_state *blit = &ctx->Meta->Blit;
|
||||
const GLint srcX = MIN2(srcX0, srcX1);
|
||||
const GLint srcY = MIN2(srcY0, srcY1);
|
||||
const GLint srcW = abs(srcX1 - srcX0);
|
||||
const GLint srcH = abs(srcY1 - srcY0);
|
||||
GLboolean srcFlipX = srcX1 < srcX0;
|
||||
GLboolean srcFlipY = srcY1 < srcY0;
|
||||
|
||||
ASSERT(ctx->Extensions.NV_texture_rectangle);
|
||||
|
||||
if (srcFlipX) {
|
||||
GLint tmp = dstX0;
|
||||
dstX0 = dstX1;
|
||||
dstX1 = tmp;
|
||||
}
|
||||
|
||||
if (srcFlipY) {
|
||||
GLint tmp = dstY0;
|
||||
dstY0 = dstY1;
|
||||
dstY1 = tmp;
|
||||
}
|
||||
|
||||
/* only scissor effects blit so save/clear all other relevant state */
|
||||
_mesa_meta_begin(ctx, ~META_SCISSOR);
|
||||
|
||||
if (blit->TexObj == 0) {
|
||||
/* one-time setup */
|
||||
|
||||
/* create texture object */
|
||||
_mesa_GenTextures(1, &blit->TexObj);
|
||||
_mesa_BindTexture(GL_TEXTURE_RECTANGLE, blit->TexObj);
|
||||
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
||||
}
|
||||
else {
|
||||
_mesa_BindTexture(GL_TEXTURE_RECTANGLE, blit->TexObj);
|
||||
}
|
||||
|
||||
_mesa_TexParameteri(GL_TEXTURE_RECTANGLE, GL_TEXTURE_MIN_FILTER, filter);
|
||||
_mesa_TexParameteri(GL_TEXTURE_RECTANGLE, GL_TEXTURE_MAG_FILTER, filter);
|
||||
|
||||
if (blit->ArrayObj == 0) {
|
||||
/* one-time setup */
|
||||
|
||||
/* create vertex array object */
|
||||
_mesa_GenVertexArrays(1, &blit->ArrayObj);
|
||||
_mesa_BindVertexArray(blit->ArrayObj);
|
||||
|
||||
/* create vertex array buffer */
|
||||
_mesa_GenBuffersARB(1, &blit->VBO);
|
||||
_mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, blit->VBO);
|
||||
_mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(blit->verts),
|
||||
blit->verts, GL_STREAM_DRAW_ARB);
|
||||
|
||||
/* setup vertex arrays */
|
||||
_mesa_VertexPointer(2, GL_FLOAT, 4 * sizeof(GLfloat),
|
||||
(void*) (0 * sizeof(GLfloat)));
|
||||
_mesa_TexCoordPointer(2, GL_FLOAT, 4 * sizeof(GLfloat),
|
||||
(void *) (2 * sizeof(GLfloat)));
|
||||
_mesa_EnableClientState(GL_VERTEX_ARRAY);
|
||||
_mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
|
||||
}
|
||||
else {
|
||||
_mesa_BindVertexArray(blit->ArrayObj);
|
||||
_mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, blit->VBO);
|
||||
}
|
||||
|
||||
/* vertex positions */
|
||||
blit->verts[0][0] = (GLfloat) dstX0;
|
||||
blit->verts[0][1] = (GLfloat) dstY0;
|
||||
blit->verts[1][0] = (GLfloat) dstX1;
|
||||
blit->verts[1][1] = (GLfloat) dstY0;
|
||||
blit->verts[2][0] = (GLfloat) dstX1;
|
||||
blit->verts[2][1] = (GLfloat) dstY1;
|
||||
blit->verts[3][0] = (GLfloat) dstX0;
|
||||
blit->verts[3][1] = (GLfloat) dstY1;
|
||||
|
||||
/* texcoords */
|
||||
blit->verts[0][2] = 0.0F;
|
||||
blit->verts[0][3] = 0.0F;
|
||||
blit->verts[1][2] = (GLfloat) srcW;
|
||||
blit->verts[1][3] = 0.0F;
|
||||
blit->verts[2][2] = (GLfloat) srcW;
|
||||
blit->verts[2][3] = (GLfloat) srcH;
|
||||
blit->verts[3][2] = 0.0F;
|
||||
blit->verts[3][3] = (GLfloat) srcH;
|
||||
|
||||
/* upload new vertex data */
|
||||
_mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0,
|
||||
sizeof(blit->verts), blit->verts);
|
||||
|
||||
/* copy framebuffer image to texture */
|
||||
if (mask & GL_COLOR_BUFFER_BIT) {
|
||||
_mesa_CopyTexImage2D(GL_TEXTURE_RECTANGLE, 0, GL_RGBA,
|
||||
srcX, srcY, srcW, srcH, 0);
|
||||
mask &= ~GL_COLOR_BUFFER_BIT;
|
||||
}
|
||||
|
||||
_mesa_Enable(GL_TEXTURE_RECTANGLE);
|
||||
|
||||
/* draw textured quad */
|
||||
_mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
|
||||
|
||||
_mesa_Disable(GL_TEXTURE_RECTANGLE);
|
||||
|
||||
_mesa_meta_end(ctx);
|
||||
|
||||
/* XXX, TO-DO: try to handle these cases above! */
|
||||
if (mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT)) {
|
||||
_swrast_BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1,
|
||||
dstX0, dstY0, dstX1, dstY1, mask, filter);
|
||||
}
|
||||
|
||||
_mesa_Finish();
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Meta implementation of ctx->Driver.Clear() in terms of polygon rendering.
|
||||
*/
|
||||
void
|
||||
_mesa_meta_clear(GLcontext *ctx, GLbitfield buffers)
|
||||
{
|
||||
struct clear_state *clear = &ctx->Meta->Clear;
|
||||
GLfloat z = 1.0 - 2.0 * ctx->Depth.Clear;
|
||||
GLuint i;
|
||||
|
||||
/* only scissor and color mask effects clearing */
|
||||
_mesa_meta_begin(ctx, ~(META_SCISSOR | META_COLOR_MASK));
|
||||
|
||||
if (clear->ArrayObj == 0) {
|
||||
/* one-time setup */
|
||||
|
||||
/* create vertex array object */
|
||||
_mesa_GenVertexArrays(1, &clear->ArrayObj);
|
||||
_mesa_BindVertexArray(clear->ArrayObj);
|
||||
|
||||
/* create vertex array buffer */
|
||||
_mesa_GenBuffersARB(1, &clear->VBO);
|
||||
_mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, clear->VBO);
|
||||
_mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(clear->verts),
|
||||
clear->verts, GL_STREAM_DRAW_ARB);
|
||||
|
||||
/* setup vertex arrays */
|
||||
_mesa_VertexPointer(3, GL_FLOAT, 7 * sizeof(GLfloat), (void *) 0);
|
||||
_mesa_ColorPointer(4, GL_FLOAT, 7 * sizeof(GLfloat),
|
||||
(void *) (3 * sizeof(GLfloat)));
|
||||
_mesa_EnableClientState(GL_VERTEX_ARRAY);
|
||||
_mesa_EnableClientState(GL_COLOR_ARRAY);
|
||||
}
|
||||
else {
|
||||
_mesa_BindVertexArray(clear->ArrayObj);
|
||||
_mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, clear->VBO);
|
||||
}
|
||||
|
||||
/* GL_COLOR_BUFFER_BIT */
|
||||
if (buffers & BUFFER_BITS_COLOR) {
|
||||
/* leave colormask, glDrawBuffer state as-is */
|
||||
}
|
||||
else {
|
||||
_mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
|
||||
}
|
||||
|
||||
/* GL_DEPTH_BUFFER_BIT */
|
||||
if (buffers & BUFFER_BIT_DEPTH) {
|
||||
_mesa_set_enable(ctx, GL_DEPTH_TEST, GL_TRUE);
|
||||
_mesa_DepthFunc(GL_ALWAYS);
|
||||
_mesa_DepthMask(GL_TRUE);
|
||||
}
|
||||
else {
|
||||
assert(!ctx->Depth.Test);
|
||||
}
|
||||
|
||||
/* GL_STENCIL_BUFFER_BIT */
|
||||
if (buffers & BUFFER_BIT_STENCIL) {
|
||||
_mesa_set_enable(ctx, GL_STENCIL_TEST, GL_TRUE);
|
||||
_mesa_StencilOpSeparate(GL_FRONT_AND_BACK,
|
||||
GL_REPLACE, GL_REPLACE, GL_REPLACE);
|
||||
_mesa_StencilFuncSeparate(GL_FRONT_AND_BACK, GL_ALWAYS,
|
||||
ctx->Stencil.Clear & 0x7fffffff,
|
||||
ctx->Stencil.WriteMask[0]);
|
||||
}
|
||||
else {
|
||||
assert(!ctx->Stencil.Enabled);
|
||||
}
|
||||
|
||||
/* vertex positions */
|
||||
clear->verts[0][0] = (GLfloat) ctx->DrawBuffer->_Xmin;
|
||||
clear->verts[0][1] = (GLfloat) ctx->DrawBuffer->_Ymin;
|
||||
clear->verts[0][2] = z;
|
||||
clear->verts[1][0] = (GLfloat) ctx->DrawBuffer->_Xmax;
|
||||
clear->verts[1][1] = (GLfloat) ctx->DrawBuffer->_Ymin;
|
||||
clear->verts[1][2] = z;
|
||||
clear->verts[2][0] = (GLfloat) ctx->DrawBuffer->_Xmax;
|
||||
clear->verts[2][1] = (GLfloat) ctx->DrawBuffer->_Ymax;
|
||||
clear->verts[2][2] = z;
|
||||
clear->verts[3][0] = (GLfloat) ctx->DrawBuffer->_Xmin;
|
||||
clear->verts[3][1] = (GLfloat) ctx->DrawBuffer->_Ymax;
|
||||
clear->verts[3][2] = z;
|
||||
|
||||
/* vertex colors */
|
||||
for (i = 0; i < 4; i++) {
|
||||
COPY_4FV(&clear->verts[i][3], ctx->Color.ClearColor);
|
||||
}
|
||||
|
||||
/* upload new vertex data */
|
||||
_mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0,
|
||||
sizeof(clear->verts), clear->verts);
|
||||
|
||||
/* draw quad */
|
||||
_mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
|
||||
|
||||
_mesa_meta_end(ctx);
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,67 @@
|
|||
/*
|
||||
* Mesa 3-D graphics library
|
||||
* Version: 7.6
|
||||
*
|
||||
* Copyright (C) 2009 VMware, Inc. All Rights Reserved.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a
|
||||
* copy of this software and associated documentation files (the "Software"),
|
||||
* to deal in the Software without restriction, including without limitation
|
||||
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
||||
* and/or sell copies of the Software, and to permit persons to whom the
|
||||
* Software is furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included
|
||||
* in all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
||||
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||||
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
|
||||
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
|
||||
#ifndef META_H
|
||||
#define META_H
|
||||
|
||||
|
||||
/**
|
||||
* Flags passed to _mesa_meta_begin().
|
||||
* XXX these flags may evolve...
|
||||
*/
|
||||
/*@{*/
|
||||
#define META_ALPHA_TEST 0x1
|
||||
#define META_BLEND 0x2 /**< includes logicop */
|
||||
#define META_COLOR_MASK 0x4
|
||||
#define META_DEPTH_TEST 0x8
|
||||
#define META_RASTERIZATION 0x10
|
||||
#define META_SCISSOR 0x20
|
||||
#define META_SHADER 0x40
|
||||
#define META_STENCIL_TEST 0x80
|
||||
#define META_TRANSFORM 0x100 /**< modelview, projection */
|
||||
#define META_TEXTURE 0x200
|
||||
#define META_VERTEX 0x400
|
||||
#define META_VIEWPORT 0x800
|
||||
#define META_ALL ~0x0
|
||||
/*@}*/
|
||||
|
||||
|
||||
extern void
|
||||
_mesa_meta_init(GLcontext *ctx);
|
||||
|
||||
extern void
|
||||
_mesa_meta_free(GLcontext *ctx);
|
||||
|
||||
extern void
|
||||
_mesa_meta_blit_framebuffer(GLcontext *ctx,
|
||||
GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
|
||||
GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
|
||||
GLbitfield mask, GLenum filter);
|
||||
|
||||
extern void
|
||||
_mesa_meta_clear(GLcontext *ctx, GLbitfield buffers);
|
||||
|
||||
|
||||
#endif /* META_H */
|
||||
|
|
@ -303,7 +303,8 @@ SPARC_API = \
|
|||
sparc/glapi_sparc.S
|
||||
|
||||
COMMON_DRIVER_SOURCES = \
|
||||
drivers/common/driverfuncs.c
|
||||
drivers/common/driverfuncs.c \
|
||||
drivers/common/meta.c
|
||||
|
||||
|
||||
# Sources for building non-Gallium drivers
|
||||
|
|
|
|||
Loading…
Reference in New Issue