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Diffstat (limited to 'src/mesa/swrast/s_context.c')
| -rw-r--r-- | src/mesa/swrast/s_context.c | 813 |
1 files changed, 813 insertions, 0 deletions
diff --git a/src/mesa/swrast/s_context.c b/src/mesa/swrast/s_context.c new file mode 100644 index 00000000000..ea283a19430 --- /dev/null +++ b/src/mesa/swrast/s_context.c @@ -0,0 +1,813 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 1999-2005 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 "program.h" +#include "teximage.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( 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[0] != 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._Active) { + rasterMask |= FRAGPROG_BIT; + } + + if (ctx->ShaderObjects._FragmentShaderPresent) { + 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 polycon culls tate to compute the _BackfaceSign field. + * _BackfaceSign 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 = 1; + + if (ctx->Polygon.CullFlag) { + backface_sign = 1; + switch(ctx->Polygon.CullFaceMode) { + case GL_BACK: + if(ctx->Polygon.FrontFace==GL_CCW) + backface_sign = -1; + break; + case GL_FRONT: + if(ctx->Polygon.FrontFace!=GL_CCW) + backface_sign = -1; + break; + default: + case GL_FRONT_AND_BACK: + backface_sign = 0; + break; + } + } + else { + backface_sign = 0; + } + + SWRAST_CONTEXT(ctx)->_BackfaceSign = backface_sign; +} + + +/** + * Update the _PreferPixelFog field to indicate if we need to compute + * fog factors per-fragment. + */ +static void +_swrast_update_fog_hint( GLcontext *ctx ) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + swrast->_PreferPixelFog = (!swrast->AllowVertexFog || + ctx->FragmentProgram._Enabled || /* not _Active! */ + (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; + } + } +} + + +/** + * Update swrast->_FogColor and swrast->_FogEnable values. + */ +static void +_swrast_update_fog_state( GLcontext *ctx ) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + + /* convert fog color to GLchan values */ + CLAMPED_FLOAT_TO_CHAN(swrast->_FogColor[RCOMP], ctx->Fog.Color[RCOMP]); + CLAMPED_FLOAT_TO_CHAN(swrast->_FogColor[GCOMP], ctx->Fog.Color[GCOMP]); + CLAMPED_FLOAT_TO_CHAN(swrast->_FogColor[BCOMP], ctx->Fog.Color[BCOMP]); + + /* determine if fog is needed, and if so, which fog mode */ + swrast->_FogEnabled = GL_FALSE; + if (ctx->FragmentProgram._Active) { + if (ctx->FragmentProgram._Current->Base.Target==GL_FRAGMENT_PROGRAM_ARB) { + const struct fragment_program *p + = (struct fragment_program *) ctx->FragmentProgram._Current; + if (p->FogOption != GL_NONE) { + swrast->_FogEnabled = GL_TRUE; + swrast->_FogMode = p->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 ) +{ + if (ctx->FragmentProgram._Active) { + struct fragment_program *program = ctx->FragmentProgram._Current; + _mesa_load_state_parameters(ctx, program->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 ); + + if (ctx->Texture._EnabledUnits == 0 + && NEED_SECONDARY_COLOR(ctx) + && !ctx->FragmentProgram._Active) { + /* 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 ); + + if (ctx->Texture._EnabledUnits == 0 + && NEED_SECONDARY_COLOR(ctx) + && !ctx->FragmentProgram._Active) { + 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._Active) { + 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[], + GLchan src[][4], + CONST GLchan dst[][4] ) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + + _swrast_validate_derived( ctx ); + _swrast_choose_blend_func( ctx ); + + swrast->BlendFunc( ctx, n, mask, src, dst ); +} + + +/** + * 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++) { + GLuint 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++) { + GLuint 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; + } + + 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.MaxTextureUnits ; i++) + swrast->TextureSample[i] = NULL; +} + + +static 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; + if (tObj) + swrast->TextureSample[u] = + _swrast_choose_texture_sample_func(ctx, tObj); + } +} + + +void +_swrast_validate_derived( GLcontext *ctx ) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + + if (swrast->NewState) { + if (swrast->NewState & _SWRAST_NEW_RASTERMASK) + _swrast_update_rasterflags( ctx ); + + 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) + _swrast_update_fragment_program( ctx ); + + if (swrast->NewState & _NEW_TEXTURE) + _swrast_update_texture_samplers( ctx ); + + if (swrast->NewState & (_NEW_TEXTURE | _NEW_PROGRAM)) + _swrast_validate_texture_images( 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_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(span_arrays); + if (!swrast->SpanArrays) { + FREE(swrast); + return GL_FALSE; + } + + /* init point span buffer */ + swrast->PointSpan.primitive = GL_POINT; + swrast->PointSpan.start = 0; + swrast->PointSpan.end = 0; + swrast->PointSpan.facing = 0; + swrast->PointSpan.array = swrast->SpanArrays; + + assert(ctx->Const.MaxTextureUnits > 0); + assert(ctx->Const.MaxTextureUnits <= MAX_TEXTURE_UNITS); + + swrast->TexelBuffer = (GLchan *) MALLOC(ctx->Const.MaxTextureUnits * + 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 ); + 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->win[0], v->win[1], v->win[2], v->win[3]); + + for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++) + if (ctx->Texture.Unit[i]._ReallyEnabled) + _mesa_debug(ctx, "texcoord[%d] %f %f %f %f\n", i, + v->texcoord[i][0], v->texcoord[i][1], + v->texcoord[i][2], v->texcoord[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]); + _mesa_debug(ctx, "spec %f %f %f %f\n", + v->specular[0], v->specular[1], + v->specular[2], v->specular[3]); +#else + _mesa_debug(ctx, "color %d %d %d %d\n", + v->color[0], v->color[1], v->color[2], v->color[3]); + _mesa_debug(ctx, "spec %d %d %d %d\n", + v->specular[0], v->specular[1], + v->specular[2], v->specular[3]); +#endif + _mesa_debug(ctx, "fog %f\n", v->fog); + _mesa_debug(ctx, "index %d\n", v->index); + _mesa_debug(ctx, "pointsize %f\n", v->pointSize); + _mesa_debug(ctx, "\n"); + } +} |