| /* |
| * Mesa 3-D graphics library |
| * Version: 7.1 |
| * |
| * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
| * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: |
| * Keith Whitwell <keith@tungstengraphics.com> |
| * Brian Paul |
| */ |
| |
| #include "imports.h" |
| #include "bufferobj.h" |
| #include "context.h" |
| #include "colormac.h" |
| #include "mtypes.h" |
| #include "teximage.h" |
| #include "swrast.h" |
| #include "shader/prog_parameter.h" |
| #include "shader/prog_statevars.h" |
| #include "s_blend.h" |
| #include "s_context.h" |
| #include "s_lines.h" |
| #include "s_points.h" |
| #include "s_span.h" |
| #include "s_triangle.h" |
| #include "s_texfilter.h" |
| |
| |
| /** |
| * Recompute the value of swrast->_RasterMask, etc. according to |
| * the current context. The _RasterMask field can be easily tested by |
| * drivers to determine certain basic GL state (does the primitive need |
| * stenciling, logic-op, fog, etc?). |
| */ |
| static void |
| _swrast_update_rasterflags( GLcontext *ctx ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| GLbitfield rasterMask = 0; |
| |
| if (ctx->Color.AlphaEnabled) rasterMask |= ALPHATEST_BIT; |
| if (ctx->Color.BlendEnabled) rasterMask |= BLEND_BIT; |
| if (ctx->Depth.Test) rasterMask |= DEPTH_BIT; |
| if (swrast->_FogEnabled) rasterMask |= FOG_BIT; |
| if (ctx->Scissor.Enabled) rasterMask |= CLIP_BIT; |
| if (ctx->Stencil.Enabled) rasterMask |= STENCIL_BIT; |
| if (ctx->Visual.rgbMode) { |
| const GLuint colorMask = *((GLuint *) &ctx->Color.ColorMask); |
| if (colorMask != 0xffffffff) rasterMask |= MASKING_BIT; |
| if (ctx->Color._LogicOpEnabled) rasterMask |= LOGIC_OP_BIT; |
| if (ctx->Texture._EnabledUnits) rasterMask |= TEXTURE_BIT; |
| } |
| else { |
| if (ctx->Color.IndexMask != 0xffffffff) rasterMask |= MASKING_BIT; |
| if (ctx->Color.IndexLogicOpEnabled) rasterMask |= LOGIC_OP_BIT; |
| } |
| |
| if ( ctx->Viewport.X < 0 |
| || ctx->Viewport.X + ctx->Viewport.Width > (GLint) ctx->DrawBuffer->Width |
| || ctx->Viewport.Y < 0 |
| || ctx->Viewport.Y + ctx->Viewport.Height > (GLint) ctx->DrawBuffer->Height) { |
| rasterMask |= CLIP_BIT; |
| } |
| |
| if (ctx->Query.CurrentOcclusionObject) |
| rasterMask |= OCCLUSION_BIT; |
| |
| |
| /* If we're not drawing to exactly one color buffer set the |
| * MULTI_DRAW_BIT flag. Also set it if we're drawing to no |
| * buffers or the RGBA or CI mask disables all writes. |
| */ |
| if (ctx->DrawBuffer->_NumColorDrawBuffers != 1) { |
| /* more than one color buffer designated for writing (or zero buffers) */ |
| rasterMask |= MULTI_DRAW_BIT; |
| } |
| else if (ctx->Visual.rgbMode && *((GLuint *) ctx->Color.ColorMask) == 0) { |
| rasterMask |= MULTI_DRAW_BIT; /* all RGBA channels disabled */ |
| } |
| else if (!ctx->Visual.rgbMode && ctx->Color.IndexMask==0) { |
| rasterMask |= MULTI_DRAW_BIT; /* all color index bits disabled */ |
| } |
| |
| if (ctx->FragmentProgram._Current) { |
| rasterMask |= FRAGPROG_BIT; |
| } |
| |
| if (ctx->ATIFragmentShader._Enabled) { |
| rasterMask |= ATIFRAGSHADER_BIT; |
| } |
| |
| #if CHAN_TYPE == GL_FLOAT |
| if (ctx->Color.ClampFragmentColor == GL_TRUE) { |
| rasterMask |= CLAMPING_BIT; |
| } |
| #endif |
| |
| SWRAST_CONTEXT(ctx)->_RasterMask = rasterMask; |
| } |
| |
| |
| /** |
| * Examine polygon cull state to compute the _BackfaceCullSign field. |
| * _BackfaceCullSign will be 0 if no culling, -1 if culling back-faces, |
| * and 1 if culling front-faces. The Polygon FrontFace state also |
| * factors in. |
| */ |
| static void |
| _swrast_update_polygon( GLcontext *ctx ) |
| { |
| GLfloat backface_sign; |
| |
| if (ctx->Polygon.CullFlag) { |
| switch (ctx->Polygon.CullFaceMode) { |
| case GL_BACK: |
| backface_sign = -1.0; |
| break; |
| case GL_FRONT: |
| backface_sign = 1.0; |
| break; |
| case GL_FRONT_AND_BACK: |
| /* fallthrough */ |
| default: |
| backface_sign = 0.0; |
| } |
| } |
| else { |
| backface_sign = 0.0; |
| } |
| |
| SWRAST_CONTEXT(ctx)->_BackfaceCullSign = backface_sign; |
| |
| /* This is for front/back-face determination, but not for culling */ |
| SWRAST_CONTEXT(ctx)->_BackfaceSign |
| = (ctx->Polygon.FrontFace == GL_CW) ? -1.0 : 1.0; |
| } |
| |
| |
| |
| /** |
| * Update the _PreferPixelFog field to indicate if we need to compute |
| * fog blend factors (from the fog coords) per-fragment. |
| */ |
| static void |
| _swrast_update_fog_hint( GLcontext *ctx ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| swrast->_PreferPixelFog = (!swrast->AllowVertexFog || |
| ctx->FragmentProgram._Current || |
| (ctx->Hint.Fog == GL_NICEST && |
| swrast->AllowPixelFog)); |
| } |
| |
| |
| |
| /** |
| * Update the swrast->_AnyTextureCombine flag. |
| */ |
| static void |
| _swrast_update_texture_env( GLcontext *ctx ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| GLuint i; |
| swrast->_AnyTextureCombine = GL_FALSE; |
| for (i = 0; i < ctx->Const.MaxTextureUnits; i++) { |
| if (ctx->Texture.Unit[i].EnvMode == GL_COMBINE_EXT || |
| ctx->Texture.Unit[i].EnvMode == GL_COMBINE4_NV) { |
| swrast->_AnyTextureCombine = GL_TRUE; |
| return; |
| } |
| } |
| } |
| |
| |
| /** |
| * Determine if we can defer texturing/shading until after Z/stencil |
| * testing. This potentially allows us to skip texturing/shading for |
| * lots of fragments. |
| */ |
| static void |
| _swrast_update_deferred_texture(GLcontext *ctx) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| if (ctx->Color.AlphaEnabled) { |
| /* alpha test depends on post-texture/shader colors */ |
| swrast->_DeferredTexture = GL_FALSE; |
| } |
| else { |
| const struct gl_fragment_program *fprog |
| = ctx->FragmentProgram._Current; |
| if (fprog && (fprog->Base.OutputsWritten & (1 << FRAG_RESULT_DEPR))) { |
| /* Z comes from fragment program/shader */ |
| swrast->_DeferredTexture = GL_FALSE; |
| } |
| else if (ctx->Query.CurrentOcclusionObject) { |
| /* occlusion query depends on shader discard/kill results */ |
| swrast->_DeferredTexture = GL_FALSE; |
| } |
| else { |
| swrast->_DeferredTexture = GL_TRUE; |
| } |
| } |
| } |
| |
| |
| /** |
| * Update swrast->_FogColor and swrast->_FogEnable values. |
| */ |
| static void |
| _swrast_update_fog_state( GLcontext *ctx ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| const struct gl_fragment_program *fp = ctx->FragmentProgram._Current; |
| |
| /* determine if fog is needed, and if so, which fog mode */ |
| swrast->_FogEnabled = GL_FALSE; |
| if (fp && fp->Base.Target == GL_FRAGMENT_PROGRAM_ARB) { |
| if (fp->FogOption != GL_NONE) { |
| swrast->_FogEnabled = GL_TRUE; |
| swrast->_FogMode = fp->FogOption; |
| } |
| } |
| else if (ctx->Fog.Enabled) { |
| swrast->_FogEnabled = GL_TRUE; |
| swrast->_FogMode = ctx->Fog.Mode; |
| } |
| } |
| |
| |
| /** |
| * Update state for running fragment programs. Basically, load the |
| * program parameters with current state values. |
| */ |
| static void |
| _swrast_update_fragment_program(GLcontext *ctx, GLbitfield newState) |
| { |
| const struct gl_fragment_program *fp = ctx->FragmentProgram._Current; |
| if (fp) { |
| #if 0 |
| /* XXX Need a way to trigger the initial loading of parameters |
| * even when there's no recent state changes. |
| */ |
| if (fp->Base.Parameters->StateFlags & newState) |
| #endif |
| _mesa_load_state_parameters(ctx, fp->Base.Parameters); |
| } |
| } |
| |
| |
| |
| #define _SWRAST_NEW_DERIVED (_SWRAST_NEW_RASTERMASK | \ |
| _NEW_TEXTURE | \ |
| _NEW_HINT | \ |
| _NEW_POLYGON ) |
| |
| /* State referenced by _swrast_choose_triangle, _swrast_choose_line. |
| */ |
| #define _SWRAST_NEW_TRIANGLE (_SWRAST_NEW_DERIVED | \ |
| _NEW_RENDERMODE| \ |
| _NEW_POLYGON| \ |
| _NEW_DEPTH| \ |
| _NEW_STENCIL| \ |
| _NEW_COLOR| \ |
| _NEW_TEXTURE| \ |
| _SWRAST_NEW_RASTERMASK| \ |
| _NEW_LIGHT| \ |
| _NEW_FOG | \ |
| _DD_NEW_SEPARATE_SPECULAR) |
| |
| #define _SWRAST_NEW_LINE (_SWRAST_NEW_DERIVED | \ |
| _NEW_RENDERMODE| \ |
| _NEW_LINE| \ |
| _NEW_TEXTURE| \ |
| _NEW_LIGHT| \ |
| _NEW_FOG| \ |
| _NEW_DEPTH | \ |
| _DD_NEW_SEPARATE_SPECULAR) |
| |
| #define _SWRAST_NEW_POINT (_SWRAST_NEW_DERIVED | \ |
| _NEW_RENDERMODE | \ |
| _NEW_POINT | \ |
| _NEW_TEXTURE | \ |
| _NEW_LIGHT | \ |
| _NEW_FOG | \ |
| _DD_NEW_SEPARATE_SPECULAR) |
| |
| #define _SWRAST_NEW_TEXTURE_SAMPLE_FUNC _NEW_TEXTURE |
| |
| #define _SWRAST_NEW_TEXTURE_ENV_MODE _NEW_TEXTURE |
| |
| #define _SWRAST_NEW_BLEND_FUNC _NEW_COLOR |
| |
| |
| |
| /** |
| * Stub for swrast->Triangle to select a true triangle function |
| * after a state change. |
| */ |
| static void |
| _swrast_validate_triangle( GLcontext *ctx, |
| const SWvertex *v0, |
| const SWvertex *v1, |
| const SWvertex *v2 ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| |
| _swrast_validate_derived( ctx ); |
| swrast->choose_triangle( ctx ); |
| ASSERT(swrast->Triangle); |
| |
| if (ctx->Texture._EnabledUnits == 0 |
| && NEED_SECONDARY_COLOR(ctx) |
| && !ctx->FragmentProgram._Current) { |
| /* separate specular color, but no texture */ |
| swrast->SpecTriangle = swrast->Triangle; |
| swrast->Triangle = _swrast_add_spec_terms_triangle; |
| } |
| |
| swrast->Triangle( ctx, v0, v1, v2 ); |
| } |
| |
| /** |
| * Called via swrast->Line. Examine current GL state and choose a software |
| * line routine. Then call it. |
| */ |
| static void |
| _swrast_validate_line( GLcontext *ctx, const SWvertex *v0, const SWvertex *v1 ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| |
| _swrast_validate_derived( ctx ); |
| swrast->choose_line( ctx ); |
| ASSERT(swrast->Line); |
| |
| if (ctx->Texture._EnabledUnits == 0 |
| && NEED_SECONDARY_COLOR(ctx) |
| && !ctx->FragmentProgram._Current) { |
| swrast->SpecLine = swrast->Line; |
| swrast->Line = _swrast_add_spec_terms_line; |
| } |
| |
| swrast->Line( ctx, v0, v1 ); |
| } |
| |
| /** |
| * Called via swrast->Point. Examine current GL state and choose a software |
| * point routine. Then call it. |
| */ |
| static void |
| _swrast_validate_point( GLcontext *ctx, const SWvertex *v0 ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| |
| _swrast_validate_derived( ctx ); |
| swrast->choose_point( ctx ); |
| |
| if (ctx->Texture._EnabledUnits == 0 |
| && NEED_SECONDARY_COLOR(ctx) |
| && !ctx->FragmentProgram._Current) { |
| swrast->SpecPoint = swrast->Point; |
| swrast->Point = _swrast_add_spec_terms_point; |
| } |
| |
| swrast->Point( ctx, v0 ); |
| } |
| |
| |
| /** |
| * Called via swrast->BlendFunc. Examine GL state to choose a blending |
| * function, then call it. |
| */ |
| static void _ASMAPI |
| _swrast_validate_blend_func(GLcontext *ctx, GLuint n, const GLubyte mask[], |
| GLvoid *src, const GLvoid *dst, |
| GLenum chanType ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| |
| _swrast_validate_derived( ctx ); /* why is this needed? */ |
| _swrast_choose_blend_func( ctx, chanType ); |
| |
| swrast->BlendFunc( ctx, n, mask, src, dst, chanType ); |
| } |
| |
| |
| /** |
| * Make sure we have texture image data for all the textures we may need |
| * for subsequent rendering. |
| */ |
| static void |
| _swrast_validate_texture_images(GLcontext *ctx) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| GLuint u; |
| |
| if (!swrast->ValidateTextureImage || !ctx->Texture._EnabledUnits) { |
| /* no textures enabled, or no way to validate images! */ |
| return; |
| } |
| |
| for (u = 0; u < ctx->Const.MaxTextureImageUnits; u++) { |
| if (ctx->Texture.Unit[u]._ReallyEnabled) { |
| struct gl_texture_object *texObj = ctx->Texture.Unit[u]._Current; |
| ASSERT(texObj); |
| if (texObj) { |
| GLuint numFaces = (texObj->Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1; |
| GLuint face; |
| for (face = 0; face < numFaces; face++) { |
| GLint lvl; |
| for (lvl = texObj->BaseLevel; lvl <= texObj->_MaxLevel; lvl++) { |
| struct gl_texture_image *texImg = texObj->Image[face][lvl]; |
| if (texImg && !texImg->Data) { |
| swrast->ValidateTextureImage(ctx, texObj, face, lvl); |
| ASSERT(texObj->Image[face][lvl]->Data); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| |
| /** |
| * Free the texture image data attached to all currently enabled |
| * textures. Meant to be called by device drivers when transitioning |
| * from software to hardware rendering. |
| */ |
| void |
| _swrast_eject_texture_images(GLcontext *ctx) |
| { |
| GLuint u; |
| |
| if (!ctx->Texture._EnabledUnits) { |
| /* no textures enabled */ |
| return; |
| } |
| |
| for (u = 0; u < ctx->Const.MaxTextureImageUnits; u++) { |
| if (ctx->Texture.Unit[u]._ReallyEnabled) { |
| struct gl_texture_object *texObj = ctx->Texture.Unit[u]._Current; |
| ASSERT(texObj); |
| if (texObj) { |
| GLuint numFaces = (texObj->Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1; |
| GLuint face; |
| for (face = 0; face < numFaces; face++) { |
| GLint lvl; |
| for (lvl = texObj->BaseLevel; lvl <= texObj->_MaxLevel; lvl++) { |
| struct gl_texture_image *texImg = texObj->Image[face][lvl]; |
| if (texImg && texImg->Data) { |
| _mesa_free_texmemory(texImg->Data); |
| texImg->Data = NULL; |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| |
| |
| static void |
| _swrast_sleep( GLcontext *ctx, GLbitfield new_state ) |
| { |
| (void) ctx; (void) new_state; |
| } |
| |
| |
| static void |
| _swrast_invalidate_state( GLcontext *ctx, GLbitfield new_state ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| GLuint i; |
| |
| swrast->NewState |= new_state; |
| |
| /* After 10 statechanges without any swrast functions being called, |
| * put the module to sleep. |
| */ |
| if (++swrast->StateChanges > 10) { |
| swrast->InvalidateState = _swrast_sleep; |
| swrast->NewState = ~0; |
| new_state = ~0; |
| } |
| |
| { |
| const struct gl_fragment_program *fp = ctx->FragmentProgram._Current; |
| if (fp && (fp->Base.Parameters->StateFlags & new_state)) { |
| _mesa_load_state_parameters(ctx, fp->Base.Parameters); |
| } |
| } |
| |
| if (new_state & swrast->InvalidateTriangleMask) |
| swrast->Triangle = _swrast_validate_triangle; |
| |
| if (new_state & swrast->InvalidateLineMask) |
| swrast->Line = _swrast_validate_line; |
| |
| if (new_state & swrast->InvalidatePointMask) |
| swrast->Point = _swrast_validate_point; |
| |
| if (new_state & _SWRAST_NEW_BLEND_FUNC) |
| swrast->BlendFunc = _swrast_validate_blend_func; |
| |
| if (new_state & _SWRAST_NEW_TEXTURE_SAMPLE_FUNC) |
| for (i = 0 ; i < ctx->Const.MaxTextureImageUnits ; i++) |
| swrast->TextureSample[i] = NULL; |
| } |
| |
| |
| void |
| _swrast_update_texture_samplers(GLcontext *ctx) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| GLuint u; |
| |
| for (u = 0; u < ctx->Const.MaxTextureImageUnits; u++) { |
| const struct gl_texture_object *tObj = ctx->Texture.Unit[u]._Current; |
| /* Note: If tObj is NULL, the sample function will be a simple |
| * function that just returns opaque black (0,0,0,1). |
| */ |
| swrast->TextureSample[u] = _swrast_choose_texture_sample_func(ctx, tObj); |
| } |
| } |
| |
| |
| /** |
| * Update swrast->_ActiveAttribs, swrast->_NumActiveAttribs, |
| * swrast->_ActiveAtttribMask. |
| */ |
| static void |
| _swrast_update_active_attribs(GLcontext *ctx) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| GLuint attribsMask; |
| |
| /* |
| * Compute _ActiveAttribsMask = which fragment attributes are needed. |
| */ |
| if (ctx->FragmentProgram._Current) { |
| /* fragment program/shader */ |
| attribsMask = ctx->FragmentProgram._Current->Base.InputsRead; |
| attribsMask &= ~FRAG_BIT_WPOS; /* WPOS is always handled specially */ |
| } |
| else if (ctx->ATIFragmentShader._Enabled) { |
| attribsMask = ~0; /* XXX fix me */ |
| } |
| else { |
| /* fixed function */ |
| attribsMask = 0x0; |
| |
| #if CHAN_TYPE == GL_FLOAT |
| attribsMask |= FRAG_BIT_COL0; |
| #endif |
| |
| if (ctx->Fog.ColorSumEnabled || |
| (ctx->Light.Enabled && |
| ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR)) { |
| attribsMask |= FRAG_BIT_COL1; |
| } |
| |
| if (swrast->_FogEnabled) |
| attribsMask |= FRAG_BIT_FOGC; |
| |
| attribsMask |= (ctx->Texture._EnabledUnits << FRAG_ATTRIB_TEX0); |
| } |
| |
| swrast->_ActiveAttribMask = attribsMask; |
| |
| /* Update _ActiveAttribs[] list */ |
| { |
| GLuint i, num = 0; |
| for (i = 0; i < FRAG_ATTRIB_MAX; i++) { |
| if (attribsMask & (1 << i)) { |
| swrast->_ActiveAttribs[num++] = i; |
| /* how should this attribute be interpolated? */ |
| if (i == FRAG_ATTRIB_COL0 || i == FRAG_ATTRIB_COL1) |
| swrast->_InterpMode[i] = ctx->Light.ShadeModel; |
| else |
| swrast->_InterpMode[i] = GL_SMOOTH; |
| } |
| } |
| swrast->_NumActiveAttribs = num; |
| } |
| } |
| |
| |
| void |
| _swrast_validate_derived( GLcontext *ctx ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| |
| if (swrast->NewState) { |
| if (swrast->NewState & _NEW_POLYGON) |
| _swrast_update_polygon( ctx ); |
| |
| if (swrast->NewState & (_NEW_HINT | _NEW_PROGRAM)) |
| _swrast_update_fog_hint( ctx ); |
| |
| if (swrast->NewState & _SWRAST_NEW_TEXTURE_ENV_MODE) |
| _swrast_update_texture_env( ctx ); |
| |
| if (swrast->NewState & (_NEW_FOG | _NEW_PROGRAM)) |
| _swrast_update_fog_state( ctx ); |
| |
| if (swrast->NewState & (_NEW_MODELVIEW | |
| _NEW_PROJECTION | |
| _NEW_TEXTURE_MATRIX | |
| _NEW_FOG | |
| _NEW_LIGHT | |
| _NEW_LINE | |
| _NEW_TEXTURE | |
| _NEW_TRANSFORM | |
| _NEW_POINT | |
| _NEW_VIEWPORT | |
| _NEW_PROGRAM)) |
| _swrast_update_fragment_program( ctx, swrast->NewState ); |
| |
| if (swrast->NewState & (_NEW_TEXTURE | _NEW_PROGRAM)) { |
| _swrast_update_texture_samplers( ctx ); |
| _swrast_validate_texture_images(ctx); |
| } |
| |
| if (swrast->NewState & (_NEW_COLOR | _NEW_PROGRAM)) |
| _swrast_update_deferred_texture(ctx); |
| |
| if (swrast->NewState & _SWRAST_NEW_RASTERMASK) |
| _swrast_update_rasterflags( ctx ); |
| |
| if (swrast->NewState & (_NEW_DEPTH | |
| _NEW_FOG | |
| _NEW_LIGHT | |
| _NEW_PROGRAM | |
| _NEW_TEXTURE)) |
| _swrast_update_active_attribs(ctx); |
| |
| swrast->NewState = 0; |
| swrast->StateChanges = 0; |
| swrast->InvalidateState = _swrast_invalidate_state; |
| } |
| } |
| |
| #define SWRAST_DEBUG 0 |
| |
| /* Public entrypoints: See also s_accum.c, s_bitmap.c, etc. |
| */ |
| void |
| _swrast_Quad( GLcontext *ctx, |
| const SWvertex *v0, const SWvertex *v1, |
| const SWvertex *v2, const SWvertex *v3 ) |
| { |
| if (SWRAST_DEBUG) { |
| _mesa_debug(ctx, "_swrast_Quad\n"); |
| _swrast_print_vertex( ctx, v0 ); |
| _swrast_print_vertex( ctx, v1 ); |
| _swrast_print_vertex( ctx, v2 ); |
| _swrast_print_vertex( ctx, v3 ); |
| } |
| SWRAST_CONTEXT(ctx)->Triangle( ctx, v0, v1, v3 ); |
| SWRAST_CONTEXT(ctx)->Triangle( ctx, v1, v2, v3 ); |
| } |
| |
| void |
| _swrast_Triangle( GLcontext *ctx, const SWvertex *v0, |
| const SWvertex *v1, const SWvertex *v2 ) |
| { |
| if (SWRAST_DEBUG) { |
| _mesa_debug(ctx, "_swrast_Triangle\n"); |
| _swrast_print_vertex( ctx, v0 ); |
| _swrast_print_vertex( ctx, v1 ); |
| _swrast_print_vertex( ctx, v2 ); |
| } |
| SWRAST_CONTEXT(ctx)->Triangle( ctx, v0, v1, v2 ); |
| } |
| |
| void |
| _swrast_Line( GLcontext *ctx, const SWvertex *v0, const SWvertex *v1 ) |
| { |
| if (SWRAST_DEBUG) { |
| _mesa_debug(ctx, "_swrast_Line\n"); |
| _swrast_print_vertex( ctx, v0 ); |
| _swrast_print_vertex( ctx, v1 ); |
| } |
| SWRAST_CONTEXT(ctx)->Line( ctx, v0, v1 ); |
| } |
| |
| void |
| _swrast_Point( GLcontext *ctx, const SWvertex *v0 ) |
| { |
| if (SWRAST_DEBUG) { |
| _mesa_debug(ctx, "_swrast_Point\n"); |
| _swrast_print_vertex( ctx, v0 ); |
| } |
| SWRAST_CONTEXT(ctx)->Point( ctx, v0 ); |
| } |
| |
| void |
| _swrast_InvalidateState( GLcontext *ctx, GLbitfield new_state ) |
| { |
| if (SWRAST_DEBUG) { |
| _mesa_debug(ctx, "_swrast_InvalidateState\n"); |
| } |
| SWRAST_CONTEXT(ctx)->InvalidateState( ctx, new_state ); |
| } |
| |
| void |
| _swrast_ResetLineStipple( GLcontext *ctx ) |
| { |
| if (SWRAST_DEBUG) { |
| _mesa_debug(ctx, "_swrast_ResetLineStipple\n"); |
| } |
| SWRAST_CONTEXT(ctx)->StippleCounter = 0; |
| } |
| |
| void |
| _swrast_SetFacing(GLcontext *ctx, GLuint facing) |
| { |
| SWRAST_CONTEXT(ctx)->PointLineFacing = facing; |
| } |
| |
| void |
| _swrast_allow_vertex_fog( GLcontext *ctx, GLboolean value ) |
| { |
| if (SWRAST_DEBUG) { |
| _mesa_debug(ctx, "_swrast_allow_vertex_fog %d\n", value); |
| } |
| SWRAST_CONTEXT(ctx)->InvalidateState( ctx, _NEW_HINT ); |
| SWRAST_CONTEXT(ctx)->AllowVertexFog = value; |
| } |
| |
| void |
| _swrast_allow_pixel_fog( GLcontext *ctx, GLboolean value ) |
| { |
| if (SWRAST_DEBUG) { |
| _mesa_debug(ctx, "_swrast_allow_pixel_fog %d\n", value); |
| } |
| SWRAST_CONTEXT(ctx)->InvalidateState( ctx, _NEW_HINT ); |
| SWRAST_CONTEXT(ctx)->AllowPixelFog = value; |
| } |
| |
| |
| GLboolean |
| _swrast_CreateContext( GLcontext *ctx ) |
| { |
| GLuint i; |
| SWcontext *swrast = (SWcontext *)CALLOC(sizeof(SWcontext)); |
| |
| if (SWRAST_DEBUG) { |
| _mesa_debug(ctx, "_swrast_CreateContext\n"); |
| } |
| |
| if (!swrast) |
| return GL_FALSE; |
| |
| swrast->NewState = ~0; |
| |
| swrast->choose_point = _swrast_choose_point; |
| swrast->choose_line = _swrast_choose_line; |
| swrast->choose_triangle = _swrast_choose_triangle; |
| |
| swrast->InvalidatePointMask = _SWRAST_NEW_POINT; |
| swrast->InvalidateLineMask = _SWRAST_NEW_LINE; |
| swrast->InvalidateTriangleMask = _SWRAST_NEW_TRIANGLE; |
| |
| swrast->Point = _swrast_validate_point; |
| swrast->Line = _swrast_validate_line; |
| swrast->Triangle = _swrast_validate_triangle; |
| swrast->InvalidateState = _swrast_sleep; |
| swrast->BlendFunc = _swrast_validate_blend_func; |
| |
| swrast->AllowVertexFog = GL_TRUE; |
| swrast->AllowPixelFog = GL_TRUE; |
| |
| /* Optimized Accum buffer */ |
| swrast->_IntegerAccumMode = GL_FALSE; |
| swrast->_IntegerAccumScaler = 0.0; |
| |
| for (i = 0; i < MAX_TEXTURE_IMAGE_UNITS; i++) |
| swrast->TextureSample[i] = NULL; |
| |
| swrast->SpanArrays = MALLOC_STRUCT(sw_span_arrays); |
| if (!swrast->SpanArrays) { |
| FREE(swrast); |
| return GL_FALSE; |
| } |
| swrast->SpanArrays->ChanType = CHAN_TYPE; |
| #if CHAN_TYPE == GL_UNSIGNED_BYTE |
| swrast->SpanArrays->rgba = swrast->SpanArrays->rgba8; |
| #elif CHAN_TYPE == GL_UNSIGNED_SHORT |
| swrast->SpanArrays->rgba = swrast->SpanArrays->rgba16; |
| #else |
| swrast->SpanArrays->rgba = swrast->SpanArrays->attribs[FRAG_ATTRIB_COL0]; |
| #endif |
| |
| /* init point span buffer */ |
| swrast->PointSpan.primitive = GL_POINT; |
| swrast->PointSpan.end = 0; |
| swrast->PointSpan.facing = 0; |
| swrast->PointSpan.array = swrast->SpanArrays; |
| |
| swrast->TexelBuffer = (GLchan *) MALLOC(ctx->Const.MaxTextureImageUnits * |
| MAX_WIDTH * 4 * sizeof(GLchan)); |
| if (!swrast->TexelBuffer) { |
| FREE(swrast->SpanArrays); |
| FREE(swrast); |
| return GL_FALSE; |
| } |
| |
| ctx->swrast_context = swrast; |
| |
| return GL_TRUE; |
| } |
| |
| void |
| _swrast_DestroyContext( GLcontext *ctx ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| |
| if (SWRAST_DEBUG) { |
| _mesa_debug(ctx, "_swrast_DestroyContext\n"); |
| } |
| |
| FREE( swrast->SpanArrays ); |
| if (swrast->ZoomedArrays) |
| FREE( swrast->ZoomedArrays ); |
| FREE( swrast->TexelBuffer ); |
| FREE( swrast ); |
| |
| ctx->swrast_context = 0; |
| } |
| |
| |
| struct swrast_device_driver * |
| _swrast_GetDeviceDriverReference( GLcontext *ctx ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| return &swrast->Driver; |
| } |
| |
| void |
| _swrast_flush( GLcontext *ctx ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| /* flush any pending fragments from rendering points */ |
| if (swrast->PointSpan.end > 0) { |
| if (ctx->Visual.rgbMode) { |
| _swrast_write_rgba_span(ctx, &(swrast->PointSpan)); |
| } |
| else { |
| _swrast_write_index_span(ctx, &(swrast->PointSpan)); |
| } |
| swrast->PointSpan.end = 0; |
| } |
| } |
| |
| void |
| _swrast_render_primitive( GLcontext *ctx, GLenum prim ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| if (swrast->Primitive == GL_POINTS && prim != GL_POINTS) { |
| _swrast_flush(ctx); |
| } |
| swrast->Primitive = prim; |
| } |
| |
| |
| void |
| _swrast_render_start( GLcontext *ctx ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| if (swrast->Driver.SpanRenderStart) |
| swrast->Driver.SpanRenderStart( ctx ); |
| swrast->PointSpan.end = 0; |
| } |
| |
| void |
| _swrast_render_finish( GLcontext *ctx ) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| if (swrast->Driver.SpanRenderFinish) |
| swrast->Driver.SpanRenderFinish( ctx ); |
| |
| _swrast_flush(ctx); |
| } |
| |
| |
| #define SWRAST_DEBUG_VERTICES 0 |
| |
| void |
| _swrast_print_vertex( GLcontext *ctx, const SWvertex *v ) |
| { |
| GLuint i; |
| |
| if (SWRAST_DEBUG_VERTICES) { |
| _mesa_debug(ctx, "win %f %f %f %f\n", |
| v->attrib[FRAG_ATTRIB_WPOS][0], |
| v->attrib[FRAG_ATTRIB_WPOS][1], |
| v->attrib[FRAG_ATTRIB_WPOS][2], |
| v->attrib[FRAG_ATTRIB_WPOS][3]); |
| |
| for (i = 0 ; i < ctx->Const.MaxTextureCoordUnits ; i++) |
| if (ctx->Texture.Unit[i]._ReallyEnabled) |
| _mesa_debug(ctx, "texcoord[%d] %f %f %f %f\n", i, |
| v->attrib[FRAG_ATTRIB_TEX0 + i][0], |
| v->attrib[FRAG_ATTRIB_TEX0 + i][1], |
| v->attrib[FRAG_ATTRIB_TEX0 + i][2], |
| v->attrib[FRAG_ATTRIB_TEX0 + i][3]); |
| |
| #if CHAN_TYPE == GL_FLOAT |
| _mesa_debug(ctx, "color %f %f %f %f\n", |
| v->color[0], v->color[1], v->color[2], v->color[3]); |
| #else |
| _mesa_debug(ctx, "color %d %d %d %d\n", |
| v->color[0], v->color[1], v->color[2], v->color[3]); |
| #endif |
| _mesa_debug(ctx, "spec %g %g %g %g\n", |
| v->attrib[FRAG_ATTRIB_COL1][0], |
| v->attrib[FRAG_ATTRIB_COL1][1], |
| v->attrib[FRAG_ATTRIB_COL1][2], |
| v->attrib[FRAG_ATTRIB_COL1][3]); |
| _mesa_debug(ctx, "fog %f\n", v->attrib[FRAG_ATTRIB_FOGC][0]); |
| _mesa_debug(ctx, "index %d\n", v->attrib[FRAG_ATTRIB_CI][0]); |
| _mesa_debug(ctx, "pointsize %f\n", v->pointSize); |
| _mesa_debug(ctx, "\n"); |
| } |
| } |
