/**
- * 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);
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;
}
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 {
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);
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);
(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);
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