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author | marha <marha@users.sourceforge.net> | 2010-04-02 14:47:58 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2010-04-02 14:47:58 +0000 |
commit | 7933658107276f9d5491f8736a743cf8f8bbd5f2 (patch) | |
tree | f2893a761364e7abc9d934e9c5427e5cf5190c7a /mesalib/src/mesa/swrast/s_fog.c | |
parent | 83fa9a9811e2c18cffd83a020757f7fb51ffddaa (diff) | |
download | vcxsrv-7933658107276f9d5491f8736a743cf8f8bbd5f2.tar.gz vcxsrv-7933658107276f9d5491f8736a743cf8f8bbd5f2.tar.bz2 vcxsrv-7933658107276f9d5491f8736a743cf8f8bbd5f2.zip |
Updated to following packages:
mesa-7.8
Diffstat (limited to 'mesalib/src/mesa/swrast/s_fog.c')
-rw-r--r-- | mesalib/src/mesa/swrast/s_fog.c | 97 |
1 files changed, 6 insertions, 91 deletions
diff --git a/mesalib/src/mesa/swrast/s_fog.c b/mesalib/src/mesa/swrast/s_fog.c index 77ed0cfef..3fc843921 100644 --- a/mesalib/src/mesa/swrast/s_fog.c +++ b/mesalib/src/mesa/swrast/s_fog.c @@ -122,38 +122,6 @@ else { \ } \ } -/* As above, but CI mode (XXX try to merge someday) */ -#define FOG_LOOP_CI(FOG_FUNC) \ -if (span->arrayAttribs & FRAG_BIT_FOGC) { \ - GLuint i; \ - for (i = 0; i < span->end; i++) { \ - const GLfloat fogCoord = span->array->attribs[FRAG_ATTRIB_FOGC][i][0]; \ - const GLfloat c = FABSF(fogCoord); \ - GLfloat f; \ - FOG_FUNC(f, c); \ - f = CLAMP(f, 0.0F, 1.0F); \ - index[i] = (GLuint) ((GLfloat) index[i] + (1.0F - f) * fogIndex); \ - } \ -} \ -else { \ - const GLfloat fogStep = span->attrStepX[FRAG_ATTRIB_FOGC][0]; \ - GLfloat fogCoord = span->attrStart[FRAG_ATTRIB_FOGC][0]; \ - const GLfloat wStep = span->attrStepX[FRAG_ATTRIB_WPOS][3]; \ - GLfloat w = span->attrStart[FRAG_ATTRIB_WPOS][3]; \ - GLuint i; \ - for (i = 0; i < span->end; i++) { \ - const GLfloat c = FABSF(fogCoord) / w; \ - GLfloat f; \ - FOG_FUNC(f, c); \ - f = CLAMP(f, 0.0F, 1.0F); \ - index[i] = (GLuint) ((GLfloat) index[i] + (1.0F - f) * fogIndex); \ - fogCoord += fogStep; \ - w += wStep; \ - } \ -} - - - /** * Apply fog to a span of RGBA pixels. * The fog value are either in the span->array->fog array or interpolated from @@ -172,14 +140,14 @@ _swrast_fog_rgba_span( const GLcontext *ctx, SWspan *span ) /* compute (scaled) fog color */ if (span->array->ChanType == GL_UNSIGNED_BYTE) { - rFog = ctx->Fog.Color[RCOMP] * 255.0; - gFog = ctx->Fog.Color[GCOMP] * 255.0; - bFog = ctx->Fog.Color[BCOMP] * 255.0; + rFog = ctx->Fog.Color[RCOMP] * 255.0F; + gFog = ctx->Fog.Color[GCOMP] * 255.0F; + bFog = ctx->Fog.Color[BCOMP] * 255.0F; } else if (span->array->ChanType == GL_UNSIGNED_SHORT) { - rFog = ctx->Fog.Color[RCOMP] * 65535.0; - gFog = ctx->Fog.Color[GCOMP] * 65535.0; - bFog = ctx->Fog.Color[BCOMP] * 65535.0; + rFog = ctx->Fog.Color[RCOMP] * 65535.0F; + gFog = ctx->Fog.Color[GCOMP] * 65535.0F; + bFog = ctx->Fog.Color[BCOMP] * 65535.0F; } else { rFog = ctx->Fog.Color[RCOMP]; @@ -275,56 +243,3 @@ _swrast_fog_rgba_span( const GLcontext *ctx, SWspan *span ) } } } - - -/** - * As above, but color index mode. - */ -void -_swrast_fog_ci_span( const GLcontext *ctx, SWspan *span ) -{ - const SWcontext *swrast = CONST_SWRAST_CONTEXT(ctx); - const GLuint fogIndex = (GLuint) ctx->Fog.Index; - GLuint *index = span->array->index; - - ASSERT(swrast->_FogEnabled); - ASSERT(span->arrayMask & SPAN_INDEX); - - /* we need to compute fog blend factors */ - if (swrast->_PreferPixelFog) { - /* The span's fog values are fog coordinates, now compute blend factors - * and blend the fragment colors with the fog color. - */ - switch (ctx->Fog.Mode) { - case GL_LINEAR: - { - const GLfloat fogEnd = ctx->Fog.End; - const GLfloat fogScale = (ctx->Fog.Start == ctx->Fog.End) - ? 1.0F : 1.0F / (ctx->Fog.End - ctx->Fog.Start); - FOG_LOOP_CI(LINEAR_FOG); - } - break; - case GL_EXP: - { - const GLfloat density = -ctx->Fog.Density; - FOG_LOOP_CI(EXP_FOG); - } - break; - case GL_EXP2: - { - const GLfloat negDensitySquared = -ctx->Fog.Density * ctx->Fog.Density; - FOG_LOOP_CI(EXP2_FOG); - } - break; - default: - _mesa_problem(ctx, "Bad fog mode in _swrast_fog_ci_span"); - return; - } - } - else { - /* The span's fog start/step/array values are blend factors in [0,1]. - * They were previously computed per-vertex. - */ - FOG_LOOP_CI(BLEND_FOG); - } -} |