From 96d6df5da9cddedf4931bf8e17f96e242467c661 Mon Sep 17 00:00:00 2001 From: marha Date: Wed, 27 Apr 2011 06:58:32 +0000 Subject: xserver libX11 libxtrans mesa pixman xkeyboard-config git update 27 Apr 2011 --- mesalib/src/mesa/swrast/s_context.c | 1906 +++++++++++++++++------------------ 1 file changed, 949 insertions(+), 957 deletions(-) (limited to 'mesalib/src/mesa/swrast/s_context.c') diff --git a/mesalib/src/mesa/swrast/s_context.c b/mesalib/src/mesa/swrast/s_context.c index b0c9880b1..def1531d7 100644 --- a/mesalib/src/mesa/swrast/s_context.c +++ b/mesalib/src/mesa/swrast/s_context.c @@ -1,957 +1,949 @@ -/* - * 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 - * Brian Paul - */ - -#include "main/imports.h" -#include "main/bufferobj.h" -#include "main/colormac.h" -#include "main/mtypes.h" -#include "main/teximage.h" -#include "program/prog_parameter.h" -#include "program/prog_statevars.h" -#include "swrast.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( struct gl_context *ctx ) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - GLbitfield rasterMask = 0; - GLuint i; - - 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; - for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { - if (!ctx->Color.ColorMask[i][0] || - !ctx->Color.ColorMask[i][1] || - !ctx->Color.ColorMask[i][2] || - !ctx->Color.ColorMask[i][3]) { - rasterMask |= MASKING_BIT; - break; - } - } - if (ctx->Color._LogicOpEnabled) rasterMask |= LOGIC_OP_BIT; - if (ctx->Texture._EnabledUnits) rasterMask |= TEXTURE_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; - } - - for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { - if (ctx->Color.ColorMask[i][0] + - ctx->Color.ColorMask[i][1] + - ctx->Color.ColorMask[i][2] + - ctx->Color.ColorMask[i][3] == 0) { - rasterMask |= MULTI_DRAW_BIT; /* all RGBA channels disabled */ - break; - } - } - - - 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( struct gl_context *ctx ) -{ - GLfloat backface_sign; - - if (ctx->Polygon.CullFlag) { - switch (ctx->Polygon.CullFaceMode) { - case GL_BACK: - backface_sign = -1.0F; - break; - case GL_FRONT: - backface_sign = 1.0F; - break; - case GL_FRONT_AND_BACK: - /* fallthrough */ - default: - backface_sign = 0.0F; - } - } - else { - backface_sign = 0.0F; - } - - 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) ? -1.0F : 1.0F; -} - - - -/** - * 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( struct gl_context *ctx ) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - swrast->_PreferPixelFog = (!swrast->AllowVertexFog || - ctx->FragmentProgram._Current || - (ctx->Hint.Fog == GL_NICEST && - swrast->AllowPixelFog)); -} - - - -/** - * Update the swrast->_TextureCombinePrimary flag. - */ -static void -_swrast_update_texture_env( struct gl_context *ctx ) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - GLuint i; - - swrast->_TextureCombinePrimary = GL_FALSE; - - for (i = 0; i < ctx->Const.MaxTextureUnits; i++) { - const struct gl_tex_env_combine_state *combine = - ctx->Texture.Unit[i]._CurrentCombine; - GLuint term; - for (term = 0; term < combine->_NumArgsRGB; term++) { - if (combine->SourceRGB[term] == GL_PRIMARY_COLOR) { - swrast->_TextureCombinePrimary = GL_TRUE; - return; - } - if (combine->SourceA[term] == GL_PRIMARY_COLOR) { - swrast->_TextureCombinePrimary = 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(struct gl_context *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_DEPTH))) { - /* Z comes from fragment program/shader */ - swrast->_DeferredTexture = GL_FALSE; - } - else if (fprog && fprog->UsesKill) { - 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( struct gl_context *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(struct gl_context *ctx, GLbitfield newState) -{ - const struct gl_fragment_program *fp = ctx->FragmentProgram._Current; - if (fp) { - _mesa_load_state_parameters(ctx, fp->Base.Parameters); - } -} - - -/** - * See if we can do early diffuse+specular (primary+secondary) color - * add per vertex instead of per-fragment. - */ -static void -_swrast_update_specular_vertex_add(struct gl_context *ctx) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - GLboolean separateSpecular = ctx->Fog.ColorSumEnabled || - (ctx->Light.Enabled && - ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR); - - swrast->SpecularVertexAdd = (separateSpecular - && ctx->Texture._EnabledUnits == 0x0 - && !ctx->FragmentProgram._Current - && !ctx->ATIFragmentShader._Enabled); -} - - -#define _SWRAST_NEW_DERIVED (_SWRAST_NEW_RASTERMASK | \ - _NEW_PROGRAM_CONSTANTS | \ - _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( struct gl_context *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 (swrast->SpecularVertexAdd) { - /* 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( struct gl_context *ctx, const SWvertex *v0, const SWvertex *v1 ) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - - _swrast_validate_derived( ctx ); - swrast->choose_line( ctx ); - ASSERT(swrast->Line); - - if (swrast->SpecularVertexAdd) { - 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( struct gl_context *ctx, const SWvertex *v0 ) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - - _swrast_validate_derived( ctx ); - swrast->choose_point( ctx ); - - if (swrast->SpecularVertexAdd) { - 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(struct gl_context *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(struct gl_context *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(struct gl_context *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( struct gl_context *ctx, GLbitfield new_state ) -{ - (void) ctx; (void) new_state; -} - - -static void -_swrast_invalidate_state( struct gl_context *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; - } - - 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(struct gl_context *ctx) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - GLuint u; - - if (!swrast) - return; /* pipe hack */ - - 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(struct gl_context *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( struct gl_context *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_PROGRAM_CONSTANTS | _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); - - if (swrast->NewState & (_NEW_FOG | - _NEW_PROGRAM | - _NEW_LIGHT | - _NEW_TEXTURE)) - _swrast_update_specular_vertex_add(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( struct gl_context *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( struct gl_context *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( struct gl_context *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( struct gl_context *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( struct gl_context *ctx, GLbitfield new_state ) -{ - if (SWRAST_DEBUG) { - _mesa_debug(ctx, "_swrast_InvalidateState\n"); - } - SWRAST_CONTEXT(ctx)->InvalidateState( ctx, new_state ); -} - -void -_swrast_ResetLineStipple( struct gl_context *ctx ) -{ - if (SWRAST_DEBUG) { - _mesa_debug(ctx, "_swrast_ResetLineStipple\n"); - } - SWRAST_CONTEXT(ctx)->StippleCounter = 0; -} - -void -_swrast_SetFacing(struct gl_context *ctx, GLuint facing) -{ - SWRAST_CONTEXT(ctx)->PointLineFacing = facing; -} - -void -_swrast_allow_vertex_fog( struct gl_context *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( struct gl_context *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( struct gl_context *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 = (GLfloat *) MALLOC(ctx->Const.MaxTextureImageUnits * - MAX_WIDTH * 4 * sizeof(GLfloat)); - if (!swrast->TexelBuffer) { - FREE(swrast->SpanArrays); - FREE(swrast); - return GL_FALSE; - } - - ctx->swrast_context = swrast; - - return GL_TRUE; -} - -void -_swrast_DestroyContext( struct gl_context *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( struct gl_context *ctx ) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - return &swrast->Driver; -} - -void -_swrast_flush( struct gl_context *ctx ) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - /* flush any pending fragments from rendering points */ - if (swrast->PointSpan.end > 0) { - _swrast_write_rgba_span(ctx, &(swrast->PointSpan)); - swrast->PointSpan.end = 0; - } -} - -void -_swrast_render_primitive( struct gl_context *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( struct gl_context *ctx ) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - if (swrast->Driver.SpanRenderStart) - swrast->Driver.SpanRenderStart( ctx ); - swrast->PointSpan.end = 0; -} - -void -_swrast_render_finish( struct gl_context *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( struct gl_context *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 %f\n", v->attrib[FRAG_ATTRIB_CI][0]); - _mesa_debug(ctx, "pointsize %f\n", v->pointSize); - _mesa_debug(ctx, "\n"); - } -} +/* + * 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 + * Brian Paul + */ + +#include "main/imports.h" +#include "main/bufferobj.h" +#include "main/colormac.h" +#include "main/mtypes.h" +#include "main/teximage.h" +#include "program/prog_parameter.h" +#include "program/prog_statevars.h" +#include "swrast.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( struct gl_context *ctx ) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + GLbitfield rasterMask = 0; + GLuint i; + + 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; + for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { + if (!ctx->Color.ColorMask[i][0] || + !ctx->Color.ColorMask[i][1] || + !ctx->Color.ColorMask[i][2] || + !ctx->Color.ColorMask[i][3]) { + rasterMask |= MASKING_BIT; + break; + } + } + if (ctx->Color._LogicOpEnabled) rasterMask |= LOGIC_OP_BIT; + if (ctx->Texture._EnabledUnits) rasterMask |= TEXTURE_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; + } + + for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { + if (ctx->Color.ColorMask[i][0] + + ctx->Color.ColorMask[i][1] + + ctx->Color.ColorMask[i][2] + + ctx->Color.ColorMask[i][3] == 0) { + rasterMask |= MULTI_DRAW_BIT; /* all RGBA channels disabled */ + break; + } + } + + + 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( struct gl_context *ctx ) +{ + GLfloat backface_sign; + + if (ctx->Polygon.CullFlag) { + switch (ctx->Polygon.CullFaceMode) { + case GL_BACK: + backface_sign = -1.0F; + break; + case GL_FRONT: + backface_sign = 1.0F; + break; + case GL_FRONT_AND_BACK: + /* fallthrough */ + default: + backface_sign = 0.0F; + } + } + else { + backface_sign = 0.0F; + } + + 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) ? -1.0F : 1.0F; +} + + + +/** + * 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( struct gl_context *ctx ) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + swrast->_PreferPixelFog = (!swrast->AllowVertexFog || + ctx->FragmentProgram._Current || + (ctx->Hint.Fog == GL_NICEST && + swrast->AllowPixelFog)); +} + + + +/** + * Update the swrast->_TextureCombinePrimary flag. + */ +static void +_swrast_update_texture_env( struct gl_context *ctx ) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + GLuint i; + + swrast->_TextureCombinePrimary = GL_FALSE; + + for (i = 0; i < ctx->Const.MaxTextureUnits; i++) { + const struct gl_tex_env_combine_state *combine = + ctx->Texture.Unit[i]._CurrentCombine; + GLuint term; + for (term = 0; term < combine->_NumArgsRGB; term++) { + if (combine->SourceRGB[term] == GL_PRIMARY_COLOR) { + swrast->_TextureCombinePrimary = GL_TRUE; + return; + } + if (combine->SourceA[term] == GL_PRIMARY_COLOR) { + swrast->_TextureCombinePrimary = 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(struct gl_context *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_DEPTH))) { + /* Z comes from fragment program/shader */ + swrast->_DeferredTexture = GL_FALSE; + } + else if (fprog && fprog->UsesKill) { + 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( struct gl_context *ctx ) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + const struct gl_fragment_program *fp = ctx->FragmentProgram._Current; + + assert((fp == NULL) || (fp->Base.Target == GL_FRAGMENT_PROGRAM_ARB)); + + /* determine if fog is needed, and if so, which fog mode */ + swrast->_FogEnabled = (fp == NULL && ctx->Fog.Enabled); +} + + +/** + * Update state for running fragment programs. Basically, load the + * program parameters with current state values. + */ +static void +_swrast_update_fragment_program(struct gl_context *ctx, GLbitfield newState) +{ + const struct gl_fragment_program *fp = ctx->FragmentProgram._Current; + if (fp) { + _mesa_load_state_parameters(ctx, fp->Base.Parameters); + } +} + + +/** + * See if we can do early diffuse+specular (primary+secondary) color + * add per vertex instead of per-fragment. + */ +static void +_swrast_update_specular_vertex_add(struct gl_context *ctx) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + GLboolean separateSpecular = ctx->Fog.ColorSumEnabled || + (ctx->Light.Enabled && + ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR); + + swrast->SpecularVertexAdd = (separateSpecular + && ctx->Texture._EnabledUnits == 0x0 + && !ctx->FragmentProgram._Current + && !ctx->ATIFragmentShader._Enabled); +} + + +#define _SWRAST_NEW_DERIVED (_SWRAST_NEW_RASTERMASK | \ + _NEW_PROGRAM_CONSTANTS | \ + _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( struct gl_context *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 (swrast->SpecularVertexAdd) { + /* 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( struct gl_context *ctx, const SWvertex *v0, const SWvertex *v1 ) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + + _swrast_validate_derived( ctx ); + swrast->choose_line( ctx ); + ASSERT(swrast->Line); + + if (swrast->SpecularVertexAdd) { + 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( struct gl_context *ctx, const SWvertex *v0 ) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + + _swrast_validate_derived( ctx ); + swrast->choose_point( ctx ); + + if (swrast->SpecularVertexAdd) { + 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(struct gl_context *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(struct gl_context *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(struct gl_context *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( struct gl_context *ctx, GLbitfield new_state ) +{ + (void) ctx; (void) new_state; +} + + +static void +_swrast_invalidate_state( struct gl_context *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; + } + + 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(struct gl_context *ctx) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + GLuint u; + + if (!swrast) + return; /* pipe hack */ + + 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(struct gl_context *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( struct gl_context *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_PROGRAM_CONSTANTS | _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); + + if (swrast->NewState & (_NEW_FOG | + _NEW_PROGRAM | + _NEW_LIGHT | + _NEW_TEXTURE)) + _swrast_update_specular_vertex_add(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( struct gl_context *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( struct gl_context *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( struct gl_context *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( struct gl_context *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( struct gl_context *ctx, GLbitfield new_state ) +{ + if (SWRAST_DEBUG) { + _mesa_debug(ctx, "_swrast_InvalidateState\n"); + } + SWRAST_CONTEXT(ctx)->InvalidateState( ctx, new_state ); +} + +void +_swrast_ResetLineStipple( struct gl_context *ctx ) +{ + if (SWRAST_DEBUG) { + _mesa_debug(ctx, "_swrast_ResetLineStipple\n"); + } + SWRAST_CONTEXT(ctx)->StippleCounter = 0; +} + +void +_swrast_SetFacing(struct gl_context *ctx, GLuint facing) +{ + SWRAST_CONTEXT(ctx)->PointLineFacing = facing; +} + +void +_swrast_allow_vertex_fog( struct gl_context *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( struct gl_context *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( struct gl_context *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 = (GLfloat *) MALLOC(ctx->Const.MaxTextureImageUnits * + MAX_WIDTH * 4 * sizeof(GLfloat)); + if (!swrast->TexelBuffer) { + FREE(swrast->SpanArrays); + FREE(swrast); + return GL_FALSE; + } + + ctx->swrast_context = swrast; + + return GL_TRUE; +} + +void +_swrast_DestroyContext( struct gl_context *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( struct gl_context *ctx ) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + return &swrast->Driver; +} + +void +_swrast_flush( struct gl_context *ctx ) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + /* flush any pending fragments from rendering points */ + if (swrast->PointSpan.end > 0) { + _swrast_write_rgba_span(ctx, &(swrast->PointSpan)); + swrast->PointSpan.end = 0; + } +} + +void +_swrast_render_primitive( struct gl_context *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( struct gl_context *ctx ) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + if (swrast->Driver.SpanRenderStart) + swrast->Driver.SpanRenderStart( ctx ); + swrast->PointSpan.end = 0; +} + +void +_swrast_render_finish( struct gl_context *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( struct gl_context *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 %f\n", v->attrib[FRAG_ATTRIB_CI][0]); + _mesa_debug(ctx, "pointsize %f\n", v->pointSize); + _mesa_debug(ctx, "\n"); + } +} -- cgit v1.2.3