From e9d7190bb2b1bf3a057e27ecd7e79302360961a1 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Tue, 17 Oct 2006 20:40:22 +0000 Subject: [PATCH] Seperate interpolate_colors() and interpolate_specular(). Fix bugs in apply_aa_coverage(). --- src/mesa/swrast/s_span.c | 366 ++++++++++++++++++++------------------- 1 file changed, 192 insertions(+), 174 deletions(-) diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c index 2fc014ef68f..cba867cf0a8 100644 --- a/src/mesa/swrast/s_span.c +++ b/src/mesa/swrast/s_span.c @@ -151,127 +151,79 @@ _swrast_span_default_texcoords( GLcontext *ctx, SWspan *span ) /** - * Interpolate colors to fill in the span->array->color array. - * \param specular if true, interpolate specular, else interpolate rgba. + * Interpolate primary colors to fill in the span->array->color array. */ static void -interpolate_colors(GLcontext *ctx, SWspan *span, GLboolean specular) +interpolate_colors(SWspan *span) { const GLuint n = span->end; GLuint i; - (void) ctx; - if (!specular) { - ASSERT((span->interpMask & SPAN_RGBA) && - !(span->arrayMask & SPAN_RGBA)); - } + ASSERT((span->interpMask & SPAN_RGBA) && + !(span->arrayMask & SPAN_RGBA)); - if (span->interpMask & SPAN_FLAT) { - /* constant color */ - switch (span->array->ChanType) { + switch (span->array->ChanType) { #if CHAN_BITS != 32 - case GL_UNSIGNED_BYTE: - { - GLubyte (*rgba)[4] = specular - ? span->array->color.sz1.spec : span->array->color.sz1.rgba; + case GL_UNSIGNED_BYTE: + { + GLubyte (*rgba)[4] = span->array->color.sz1.rgba; + if (span->interpMask & SPAN_FLAT) { GLubyte color[4]; - if (specular) { - color[RCOMP] = FixedToInt(span->specRed); - color[GCOMP] = FixedToInt(span->specGreen); - color[BCOMP] = FixedToInt(span->specBlue); - color[ACOMP] = 0; - } - else { - color[RCOMP] = FixedToInt(span->red); - color[GCOMP] = FixedToInt(span->green); - color[BCOMP] = FixedToInt(span->blue); - color[ACOMP] = FixedToInt(span->alpha); - } + color[RCOMP] = FixedToInt(span->red); + color[GCOMP] = FixedToInt(span->green); + color[BCOMP] = FixedToInt(span->blue); + color[ACOMP] = FixedToInt(span->alpha); for (i = 0; i < n; i++) { COPY_4UBV(rgba[i], color); } } - break; - case GL_UNSIGNED_SHORT: - { - GLushort (*rgba)[4] = specular - ? span->array->color.sz2.spec : span->array->color.sz2.rgba; - GLushort color[4]; - if (specular) { - color[RCOMP] = FixedToInt(span->specRed); - color[GCOMP] = FixedToInt(span->specGreen); - color[BCOMP] = FixedToInt(span->specBlue); - color[ACOMP] = 0; - } - else { - color[RCOMP] = FixedToInt(span->red); - color[GCOMP] = FixedToInt(span->green); - color[BCOMP] = FixedToInt(span->blue); - color[ACOMP] = FixedToInt(span->alpha); - } + else { + GLfixed r = span->red; + GLfixed g = span->green; + GLfixed b = span->blue; + GLfixed a = span->alpha; + GLint dr = span->redStep; + GLint dg = span->greenStep; + GLint db = span->blueStep; + GLint da = span->alphaStep; for (i = 0; i < n; i++) { - COPY_4V(rgba[i], color); + rgba[i][RCOMP] = FixedToChan(r); + rgba[i][GCOMP] = FixedToChan(g); + rgba[i][BCOMP] = FixedToChan(b); + rgba[i][ACOMP] = FixedToChan(a); + r += dr; + g += dg; + b += db; + a += da; } } - break; -#endif - case GL_FLOAT: - { - GLfloat (*rgba)[4] = specular ? - span->array->color.sz4.spec : span->array->color.sz4.rgba; - GLfloat color[4]; - ASSERT(CHAN_TYPE == GL_FLOAT); - if (specular) { - color[RCOMP] = span->specRed; - color[GCOMP] = span->specGreen; - color[BCOMP] = span->specBlue; - color[ACOMP] = 0.0F; - } - else { - color[RCOMP] = span->red; - color[GCOMP] = span->green; - color[BCOMP] = span->blue; - color[ACOMP] = span->alpha; - } + } + break; + case GL_UNSIGNED_SHORT: + { + GLushort (*rgba)[4] = span->array->color.sz2.rgba; + if (span->interpMask & SPAN_FLAT) { + GLushort color[4]; + color[RCOMP] = FixedToInt(span->red); + color[GCOMP] = FixedToInt(span->green); + color[BCOMP] = FixedToInt(span->blue); + color[ACOMP] = FixedToInt(span->alpha); for (i = 0; i < n; i++) { COPY_4V(rgba[i], color); } } - break; - default: - _mesa_problem(ctx, "bad datatype in interpolate_colors"); - } - } - else { - /* interpolate */ - switch (span->array->ChanType) { -#if CHAN_BITS != 32 - case GL_UNSIGNED_BYTE: - { - GLubyte (*rgba)[4] = specular - ? span->array->color.sz1.spec : span->array->color.sz1.rgba; + else { + GLushort (*rgba)[4] = span->array->color.sz2.rgba; GLfixed r, g, b, a; GLint dr, dg, db, da; - if (specular) { - r = span->specRed; - g = span->specGreen; - b = span->specBlue; - a = 0; - dr = span->specRedStep; - dg = span->specGreenStep; - db = span->specBlueStep; - da = 0; - } - else { - r = span->red; - g = span->green; - b = span->blue; - a = span->alpha; - dr = span->redStep; - dg = span->greenStep; - db = span->blueStep; - da = span->alphaStep; - } + r = span->red; + g = span->green; + b = span->blue; + a = span->alpha; + dr = span->redStep; + dg = span->greenStep; + db = span->blueStep; + da = span->alphaStep; for (i = 0; i < n; i++) { rgba[i][RCOMP] = FixedToChan(r); rgba[i][GCOMP] = FixedToChan(g); @@ -283,91 +235,155 @@ interpolate_colors(GLcontext *ctx, SWspan *span, GLboolean specular) a += da; } } - break; - case GL_UNSIGNED_SHORT: - { - GLushort (*rgba)[4] = specular - ? span->array->color.sz2.spec : span->array->color.sz2.rgba; - GLfixed r, g, b, a; - GLint dr, dg, db, da; - if (specular) { - r = span->specRed; - g = span->specGreen; - b = span->specBlue; - a = 0; - dr = span->specRedStep; - dg = span->specGreenStep; - db = span->specBlueStep; - da = 0; - } - else { - r = span->red; - g = span->green; - b = span->blue; - a = span->alpha; - dr = span->redStep; - dg = span->greenStep; - db = span->blueStep; - da = span->alphaStep; + } + break; +#endif + case GL_FLOAT: + { + GLfloat (*rgba)[4] = span->array->color.sz4.rgba; + GLfloat r, g, b, a, dr, dg, db, da; + r = span->red; + g = span->green; + b = span->blue; + a = span->alpha; + if (span->interpMask & SPAN_FLAT) { + dr = dg = db = da = 0.0; + } + else { + dr = span->redStep; + dg = span->greenStep; + db = span->blueStep; + da = span->alphaStep; + } + for (i = 0; i < n; i++) { + rgba[i][RCOMP] = r; + rgba[i][GCOMP] = g; + rgba[i][BCOMP] = b; + rgba[i][ACOMP] = a; + r += dr; + g += dg; + b += db; + a += da; + } + } + break; + default: + _mesa_problem(NULL, "bad datatype in interpolate_colors"); + } + span->arrayMask |= SPAN_RGBA; +} + + +/** + * Interpolate specular/secondary colors. + */ +static void +interpolate_specular(SWspan *span) +{ + const GLuint n = span->end; + GLuint i; + + switch (span->array->ChanType) { + case GL_UNSIGNED_BYTE: + { + GLubyte (*spec)[4] = span->array->color.sz1.spec; + if (span->interpMask & SPAN_FLAT) { + GLubyte color[4]; + color[RCOMP] = FixedToInt(span->specRed); + color[GCOMP] = FixedToInt(span->specGreen); + color[BCOMP] = FixedToInt(span->specBlue); + color[ACOMP] = 0; + for (i = 0; i < n; i++) { + COPY_4UBV(spec[i], color); } + } + else { + GLfixed r = span->specRed; + GLfixed g = span->specGreen; + GLfixed b = span->specBlue; + GLint dr = span->specRedStep; + GLint dg = span->specGreenStep; + GLint db = span->specBlueStep; for (i = 0; i < n; i++) { - rgba[i][RCOMP] = FixedToChan(r); - rgba[i][GCOMP] = FixedToChan(g); - rgba[i][BCOMP] = FixedToChan(b); - rgba[i][ACOMP] = FixedToChan(a); + spec[i][RCOMP] = CLAMP(FixedToChan(r), 0, 255); + spec[i][GCOMP] = CLAMP(FixedToChan(g), 0, 255); + spec[i][BCOMP] = CLAMP(FixedToChan(b), 0, 255); + spec[i][ACOMP] = 0; r += dr; g += dg; b += db; - a += da; } } - break; -#endif - case GL_FLOAT: - { - GLfloat (*rgba)[4] = specular ? - span->array->color.sz4.spec : span->array->color.sz4.rgba; - GLfloat r, g, b, a, dr, dg, db, da; - if (specular) { - r = span->specRed; - g = span->specGreen; - b = span->specBlue; - a = 0.0F; - dr = span->specRedStep; - dg = span->specGreenStep; - db = span->specBlueStep; - da = 0.0F; + } + break; + case GL_UNSIGNED_SHORT: + { + GLushort (*spec)[4] = span->array->color.sz2.spec; + if (span->interpMask & SPAN_FLAT) { + GLushort color[4]; + color[RCOMP] = FixedToInt(span->specRed); + color[GCOMP] = FixedToInt(span->specGreen); + color[BCOMP] = FixedToInt(span->specBlue); + color[ACOMP] = 0; + for (i = 0; i < n; i++) { + COPY_4V(spec[i], color); } - else { - r = span->red; - g = span->green; - b = span->blue; - a = span->alpha; - dr = span->redStep; - dg = span->greenStep; - db = span->blueStep; - da = span->alphaStep; + } + else { + GLfixed r = FloatToFixed(span->specRed); + GLfixed g = FloatToFixed(span->specGreen); + GLfixed b = FloatToFixed(span->specBlue); + GLint dr = FloatToFixed(span->specRedStep); + GLint dg = FloatToFixed(span->specGreenStep); + GLint db = FloatToFixed(span->specBlueStep); + for (i = 0; i < n; i++) { + spec[i][RCOMP] = FixedToInt(r); + spec[i][GCOMP] = FixedToInt(g); + spec[i][BCOMP] = FixedToInt(b); + spec[i][ACOMP] = 0; + r += dr; + g += dg; + b += db; } - /* - ASSERT(CHAN_TYPE == GL_FLOAT); - */ + } + } + break; + case GL_FLOAT: + { + GLfloat (*spec)[4] = span->array->color.sz4.spec; + if (span->interpMask & SPAN_FLAT) { + GLfloat color[4]; + color[RCOMP] = span->specRed; + color[GCOMP] = span->specGreen; + color[BCOMP] = span->specBlue; + color[ACOMP] = 0.0F; for (i = 0; i < n; i++) { - rgba[i][RCOMP] = r; - rgba[i][GCOMP] = g; - rgba[i][BCOMP] = b; - rgba[i][ACOMP] = a; + COPY_4V(spec[i], color); + } + } + else { + GLfloat r = span->specRed; + GLfloat g = span->specGreen; + GLfloat b = span->specBlue; + GLfloat dr = span->specRedStep; + GLfloat dg = span->specGreenStep; + GLfloat db = span->specBlueStep; + for (i = 0; i < n; i++) { + spec[i][RCOMP] = r; + spec[i][GCOMP] = g; + spec[i][BCOMP] = b; + spec[i][ACOMP] = 0.0F; r += dr; g += dg; b += db; - a += da; } } - break; - default: - _mesa_problem(ctx, "bad datatype in interpolate_colors"); } + break; + default: + _mesa_problem(NULL, "bad datatype in interpolate_specular"); } - span->arrayMask |= (specular ? SPAN_SPEC : SPAN_RGBA); + span->arrayMask |= SPAN_SPEC; } @@ -1228,15 +1244,17 @@ apply_aa_coverage(SWspan *span) if (span->array->ChanType == GL_UNSIGNED_BYTE) { GLubyte (*rgba)[4] = span->array->color.sz1.rgba; for (i = 0; i < span->end; i++) { + const GLfloat a = rgba[i][ACOMP] * coverage[i]; + rgba[i][ACOMP] = (GLubyte) CLAMP(a, 0.0, 255.0); ASSERT(coverage[i] >= 0.0); ASSERT(coverage[i] <= 1.0); - UNCLAMPED_FLOAT_TO_UBYTE(rgba[i][ACOMP], rgba[i][ACOMP] * coverage[i]); } } else if (span->array->ChanType == GL_UNSIGNED_SHORT) { GLushort (*rgba)[4] = span->array->color.sz2.rgba; for (i = 0; i < span->end; i++) { - UNCLAMPED_FLOAT_TO_USHORT(rgba[i][ACOMP], rgba[i][ACOMP] * coverage[i]); + const GLfloat a = rgba[i][ACOMP] * coverage[i]; + rgba[i][ACOMP] = (GLushort) CLAMP(a, 0.0, 65535.0); } } else { @@ -1367,10 +1385,10 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span) if (!deferredTexture) { /* Now we need the rgba array, fill it in if needed */ if ((span->interpMask & SPAN_RGBA) && (span->arrayMask & SPAN_RGBA) == 0) - interpolate_colors(ctx, span, GL_FALSE); + interpolate_colors(span); if (span->interpMask & SPAN_SPEC) - interpolate_colors(ctx, span, GL_TRUE); + interpolate_specular(span); if (span->interpMask & SPAN_FOG) interpolate_fog(ctx, span); @@ -1455,10 +1473,10 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span) if (deferredTexture) { /* Now we need the rgba array, fill it in if needed */ if ((span->interpMask & SPAN_RGBA) && (span->arrayMask & SPAN_RGBA) == 0) - interpolate_colors(ctx, span, GL_FALSE); + interpolate_colors(span); if (span->interpMask & SPAN_SPEC) - interpolate_colors(ctx, span, GL_TRUE); + interpolate_specular(span); if (span->interpMask & SPAN_FOG) interpolate_fog(ctx, span); @@ -1487,7 +1505,7 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span) (ctx->Light.Enabled && ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR)) { if (span->interpMask & SPAN_SPEC) { - interpolate_colors(ctx, span, GL_TRUE); + interpolate_specular(span); } if (span->arrayMask & SPAN_SPEC) { add_specular(ctx, span); -- 2.30.2