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-rw-r--r--src/mesa/main/pixel.c373
1 files changed, 321 insertions, 52 deletions
diff --git a/src/mesa/main/pixel.c b/src/mesa/main/pixel.c
index f211af91703..6800170faae 100644
--- a/src/mesa/main/pixel.c
+++ b/src/mesa/main/pixel.c
@@ -1,9 +1,8 @@
-
/*
* Mesa 3-D graphics library
- * Version: 5.1
+ * Version: 6.1
*
- * Copyright (C) 1999-2003 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2004 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"),
@@ -875,13 +874,12 @@ _mesa_transform_rgba(const GLcontext *ctx, GLuint n, GLfloat rgba[][4])
}
-/*
- * Apply a color table lookup to an array of colors.
- * XXX merge with _swrast_texture_table_lookup in s_texture.c
+/**
+ * Apply a color table lookup to an array of floating point RGBA colors.
*/
void
-_mesa_lookup_rgba(const struct gl_color_table *table,
- GLuint n, GLfloat rgba[][4])
+_mesa_lookup_rgba_float(const struct gl_color_table *table,
+ GLuint n, GLfloat rgba[][4])
{
if (!table->Table || table->Size == 0)
return;
@@ -889,14 +887,14 @@ _mesa_lookup_rgba(const struct gl_color_table *table,
switch (table->Format) {
case GL_INTENSITY:
/* replace RGBA with I */
- if (table->Type != GL_FLOAT) {
+ if (table->Type == GL_FLOAT) {
const GLint max = table->Size - 1;
const GLfloat scale = (GLfloat) max;
- const GLchan *lut = (const GLchan *) table->Table;
+ const GLfloat *lut = (const GLfloat *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
GLint j = IROUND(rgba[i][RCOMP] * scale);
- GLfloat c = CHAN_TO_FLOAT(lut[CLAMP(j, 0, max)]);
+ GLfloat c = lut[CLAMP(j, 0, max)];
rgba[i][RCOMP] = rgba[i][GCOMP] =
rgba[i][BCOMP] = rgba[i][ACOMP] = c;
}
@@ -904,11 +902,11 @@ _mesa_lookup_rgba(const struct gl_color_table *table,
else {
const GLint max = table->Size - 1;
const GLfloat scale = (GLfloat) max;
- const GLfloat *lut = (const GLfloat *) table->Table;
+ const GLchan *lut = (const GLchan *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
GLint j = IROUND(rgba[i][RCOMP] * scale);
- GLfloat c = lut[CLAMP(j, 0, max)];
+ GLfloat c = CHAN_TO_FLOAT(lut[CLAMP(j, 0, max)]);
rgba[i][RCOMP] = rgba[i][GCOMP] =
rgba[i][BCOMP] = rgba[i][ACOMP] = c;
}
@@ -916,58 +914,58 @@ _mesa_lookup_rgba(const struct gl_color_table *table,
break;
case GL_LUMINANCE:
/* replace RGB with L */
- if (table->Type != GL_FLOAT) {
+ if (table->Type == GL_FLOAT) {
const GLint max = table->Size - 1;
const GLfloat scale = (GLfloat) max;
- const GLchan *lut = (const GLchan *) table->Table;
+ const GLfloat *lut = (const GLfloat *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
GLint j = IROUND(rgba[i][RCOMP] * scale);
- GLfloat c = CHAN_TO_FLOAT(lut[CLAMP(j, 0, max)]);
+ GLfloat c = lut[CLAMP(j, 0, max)];
rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = c;
}
}
else {
const GLint max = table->Size - 1;
const GLfloat scale = (GLfloat) max;
- const GLfloat *lut = (const GLfloat *) table->Table;
+ const GLchan *lut = (const GLchan *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
GLint j = IROUND(rgba[i][RCOMP] * scale);
- GLfloat c = lut[CLAMP(j, 0, max)];
+ GLfloat c = CHAN_TO_FLOAT(lut[CLAMP(j, 0, max)]);
rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = c;
}
}
break;
case GL_ALPHA:
/* replace A with A */
- if (table->Type != GL_FLOAT) {
+ if (table->Type == GL_FLOAT) {
const GLint max = table->Size - 1;
const GLfloat scale = (GLfloat) max;
- const GLchan *lut = (const GLchan *) table->Table;
+ const GLfloat *lut = (const GLfloat *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
GLint j = IROUND(rgba[i][ACOMP] * scale);
- rgba[i][ACOMP] = CHAN_TO_FLOAT(lut[CLAMP(j, 0, max)]);
+ rgba[i][ACOMP] = lut[CLAMP(j, 0, max)];
}
}
- else {
+ else {
const GLint max = table->Size - 1;
const GLfloat scale = (GLfloat) max;
- const GLfloat *lut = (const GLfloat *) table->Table;
+ const GLchan *lut = (const GLchan *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
GLint j = IROUND(rgba[i][ACOMP] * scale);
- rgba[i][ACOMP] = lut[CLAMP(j, 0, max)];
+ rgba[i][ACOMP] = CHAN_TO_FLOAT(lut[CLAMP(j, 0, max)]);
}
}
break;
case GL_LUMINANCE_ALPHA:
/* replace RGBA with LLLA */
- if (table->Type != GL_FLOAT) {
+ if (table->Type == GL_FLOAT) {
const GLint max = table->Size - 1;
const GLfloat scale = (GLfloat) max;
- const GLchan *lut = (const GLchan *) table->Table;
+ const GLfloat *lut = (const GLfloat *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
GLint jL = IROUND(rgba[i][RCOMP] * scale);
@@ -975,8 +973,8 @@ _mesa_lookup_rgba(const struct gl_color_table *table,
GLfloat luminance, alpha;
jL = CLAMP(jL, 0, max);
jA = CLAMP(jA, 0, max);
- luminance = CHAN_TO_FLOAT(lut[jL * 2 + 0]);
- alpha = CHAN_TO_FLOAT(lut[jA * 2 + 1]);
+ luminance = lut[jL * 2 + 0];
+ alpha = lut[jA * 2 + 1];
rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = luminance;
rgba[i][ACOMP] = alpha;;
}
@@ -984,7 +982,7 @@ _mesa_lookup_rgba(const struct gl_color_table *table,
else {
const GLint max = table->Size - 1;
const GLfloat scale = (GLfloat) max;
- const GLfloat *lut = (const GLfloat *) table->Table;
+ const GLchan *lut = (const GLchan *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
GLint jL = IROUND(rgba[i][RCOMP] * scale);
@@ -992,8 +990,8 @@ _mesa_lookup_rgba(const struct gl_color_table *table,
GLfloat luminance, alpha;
jL = CLAMP(jL, 0, max);
jA = CLAMP(jA, 0, max);
- luminance = lut[jL * 2 + 0];
- alpha = lut[jA * 2 + 1];
+ luminance = CHAN_TO_FLOAT(lut[jL * 2 + 0]);
+ alpha = CHAN_TO_FLOAT(lut[jA * 2 + 1]);
rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = luminance;
rgba[i][ACOMP] = alpha;;
}
@@ -1001,10 +999,10 @@ _mesa_lookup_rgba(const struct gl_color_table *table,
break;
case GL_RGB:
/* replace RGB with RGB */
- if (table->Type != GL_FLOAT) {
+ if (table->Type == GL_FLOAT) {
const GLint max = table->Size - 1;
const GLfloat scale = (GLfloat) max;
- const GLchan *lut = (const GLchan *) table->Table;
+ const GLfloat *lut = (const GLfloat *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
GLint jR = IROUND(rgba[i][RCOMP] * scale);
@@ -1013,15 +1011,15 @@ _mesa_lookup_rgba(const struct gl_color_table *table,
jR = CLAMP(jR, 0, max);
jG = CLAMP(jG, 0, max);
jB = CLAMP(jB, 0, max);
- rgba[i][RCOMP] = CHAN_TO_FLOAT(lut[jR * 3 + 0]);
- rgba[i][GCOMP] = CHAN_TO_FLOAT(lut[jG * 3 + 1]);
- rgba[i][BCOMP] = CHAN_TO_FLOAT(lut[jB * 3 + 2]);
+ rgba[i][RCOMP] = lut[jR * 3 + 0];
+ rgba[i][GCOMP] = lut[jG * 3 + 1];
+ rgba[i][BCOMP] = lut[jB * 3 + 2];
}
}
else {
const GLint max = table->Size - 1;
const GLfloat scale = (GLfloat) max;
- const GLfloat *lut = (const GLfloat *) table->Table;
+ const GLchan *lut = (const GLchan *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
GLint jR = IROUND(rgba[i][RCOMP] * scale);
@@ -1030,18 +1028,18 @@ _mesa_lookup_rgba(const struct gl_color_table *table,
jR = CLAMP(jR, 0, max);
jG = CLAMP(jG, 0, max);
jB = CLAMP(jB, 0, max);
- rgba[i][RCOMP] = lut[jR * 3 + 0];
- rgba[i][GCOMP] = lut[jG * 3 + 1];
- rgba[i][BCOMP] = lut[jB * 3 + 2];
+ rgba[i][RCOMP] = CHAN_TO_FLOAT(lut[jR * 3 + 0]);
+ rgba[i][GCOMP] = CHAN_TO_FLOAT(lut[jG * 3 + 1]);
+ rgba[i][BCOMP] = CHAN_TO_FLOAT(lut[jB * 3 + 2]);
}
}
break;
case GL_RGBA:
/* replace RGBA with RGBA */
- if (table->Type != GL_FLOAT) {
+ if (table->Type == GL_FLOAT) {
const GLint max = table->Size - 1;
const GLfloat scale = (GLfloat) max;
- const GLchan *lut = (const GLchan *) table->Table;
+ const GLfloat *lut = (const GLfloat *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
GLint jR = IROUND(rgba[i][RCOMP] * scale);
@@ -1052,16 +1050,16 @@ _mesa_lookup_rgba(const struct gl_color_table *table,
jG = CLAMP(jG, 0, max);
jB = CLAMP(jB, 0, max);
jA = CLAMP(jA, 0, max);
- rgba[i][RCOMP] = CHAN_TO_FLOAT(lut[jR * 4 + 0]);
- rgba[i][GCOMP] = CHAN_TO_FLOAT(lut[jG * 4 + 1]);
- rgba[i][BCOMP] = CHAN_TO_FLOAT(lut[jB * 4 + 2]);
- rgba[i][ACOMP] = CHAN_TO_FLOAT(lut[jA * 4 + 3]);
+ rgba[i][RCOMP] = lut[jR * 4 + 0];
+ rgba[i][GCOMP] = lut[jG * 4 + 1];
+ rgba[i][BCOMP] = lut[jB * 4 + 2];
+ rgba[i][ACOMP] = lut[jA * 4 + 3];
}
}
else {
const GLint max = table->Size - 1;
const GLfloat scale = (GLfloat) max;
- const GLfloat *lut = (const GLfloat *) table->Table;
+ const GLchan *lut = (const GLchan *) table->Table;
GLuint i;
for (i = 0; i < n; i++) {
GLint jR = IROUND(rgba[i][RCOMP] * scale);
@@ -1072,15 +1070,286 @@ _mesa_lookup_rgba(const struct gl_color_table *table,
jG = CLAMP(jG, 0, max);
jB = CLAMP(jB, 0, max);
jA = CLAMP(jA, 0, max);
- rgba[i][RCOMP] = lut[jR * 4 + 0];
- rgba[i][GCOMP] = lut[jG * 4 + 1];
- rgba[i][BCOMP] = lut[jB * 4 + 2];
- rgba[i][ACOMP] = lut[jA * 4 + 3];
+ rgba[i][RCOMP] = CHAN_TO_FLOAT(lut[jR * 4 + 0]);
+ rgba[i][GCOMP] = CHAN_TO_FLOAT(lut[jG * 4 + 1]);
+ rgba[i][BCOMP] = CHAN_TO_FLOAT(lut[jB * 4 + 2]);
+ rgba[i][ACOMP] = CHAN_TO_FLOAT(lut[jA * 4 + 3]);
+ }
+ }
+ break;
+ default:
+ _mesa_problem(NULL, "Bad format in _mesa_lookup_rgba_float");
+ return;
+ }
+}
+
+
+
+/**
+ * Apply a color table lookup to an array of GLchan RGBA colors.
+ */
+void
+_mesa_lookup_rgba_chan(const struct gl_color_table *table,
+ GLuint n, GLchan rgba[][4])
+{
+ if (!table->Table || table->Size == 0)
+ return;
+
+ switch (table->Format) {
+ case GL_INTENSITY:
+ /* replace RGBA with I */
+ if (table->Type == GL_FLOAT) {
+ const GLfloat scale = (GLfloat) (table->Size - 1) / CHAN_MAXF;
+ const GLfloat *lut = (const GLfloat *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint j = IROUND((GLfloat) rgba[i][RCOMP] * scale);
+ GLchan c;
+ CLAMPED_FLOAT_TO_CHAN(c, lut[j]);
+ rgba[i][RCOMP] = rgba[i][GCOMP] =
+ rgba[i][BCOMP] = rgba[i][ACOMP] = c;
+ }
+ }
+ else {
+#if CHAN_TYPE == GL_UNSIGNED_BYTE
+ if (table->Size == 256) {
+ /* common case */
+ const GLchan *lut = (const GLchan *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ const GLchan c = lut[rgba[i][RCOMP]];
+ rgba[i][RCOMP] = rgba[i][GCOMP] =
+ rgba[i][BCOMP] = rgba[i][ACOMP] = c;
+ }
+ }
+ else
+#endif
+ {
+ const GLfloat scale = (GLfloat) (table->Size - 1) / CHAN_MAXF;
+ const GLchan *lut = (const GLchan *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint j = IROUND((GLfloat) rgba[i][RCOMP] * scale);
+ rgba[i][RCOMP] = rgba[i][GCOMP] =
+ rgba[i][BCOMP] = rgba[i][ACOMP] = lut[j];
+ }
+ }
+ }
+ break;
+ case GL_LUMINANCE:
+ /* replace RGB with L */
+ if (table->Type == GL_FLOAT) {
+ const GLfloat scale = (GLfloat) (table->Size - 1) / CHAN_MAXF;
+ const GLfloat *lut = (const GLfloat *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint j = IROUND((GLfloat) rgba[i][RCOMP] * scale);
+ GLchan c;
+ CLAMPED_FLOAT_TO_CHAN(c, lut[j]);
+ rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = c;
+ }
+ }
+ else {
+#if CHAN_TYPE == GL_UNSIGNED_BYTE
+ if (table->Size == 256) {
+ /* common case */
+ const GLchan *lut = (const GLchan *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ const GLchan c = lut[rgba[i][RCOMP]];
+ rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = c;
+ }
+ }
+ else
+#endif
+ {
+ const GLfloat scale = (GLfloat) (table->Size - 1) / CHAN_MAXF;
+ const GLchan *lut = (const GLchan *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint j = IROUND((GLfloat) rgba[i][RCOMP] * scale);
+ rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = lut[j];
+ }
+ }
+ }
+ break;
+ case GL_ALPHA:
+ /* replace A with A */
+ if (table->Type == GL_FLOAT) {
+ const GLfloat scale = (GLfloat) (table->Size - 1) / CHAN_MAXF;
+ const GLfloat *lut = (const GLfloat *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint j = IROUND((GLfloat) rgba[i][ACOMP] * scale);
+ GLchan c;
+ CLAMPED_FLOAT_TO_CHAN(c, lut[j]);
+ rgba[i][ACOMP] = c;
+ }
+ }
+ else {
+#if CHAN_TYPE == GL_UNSIGNED_BYTE
+ if (table->Size == 256) {
+ /* common case */
+ const GLchan *lut = (const GLchan *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ rgba[i][ACOMP] = lut[rgba[i][ACOMP]];
+ }
+ }
+ else
+#endif
+ {
+ const GLfloat scale = (GLfloat) (table->Size - 1) / CHAN_MAXF;
+ const GLchan *lut = (const GLchan *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint j = IROUND((GLfloat) rgba[i][ACOMP] * scale);
+ rgba[i][ACOMP] = lut[j];
+ }
+ }
+ }
+ break;
+ case GL_LUMINANCE_ALPHA:
+ /* replace RGBA with LLLA */
+ if (table->Type == GL_FLOAT) {
+ const GLfloat scale = (GLfloat) (table->Size - 1) / CHAN_MAXF;
+ const GLfloat *lut = (const GLfloat *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint jL = IROUND((GLfloat) rgba[i][RCOMP] * scale);
+ GLint jA = IROUND((GLfloat) rgba[i][ACOMP] * scale);
+ GLchan luminance, alpha;
+ CLAMPED_FLOAT_TO_CHAN(luminance, lut[jL * 2 + 0]);
+ CLAMPED_FLOAT_TO_CHAN(alpha, lut[jA * 2 + 1]);
+ rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = luminance;
+ rgba[i][ACOMP] = alpha;;
+ }
+ }
+ else {
+#if CHAN_TYPE == GL_UNSIGNED_BYTE
+ if (table->Size == 256) {
+ /* common case */
+ const GLchan *lut = (const GLchan *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLchan l = lut[rgba[i][RCOMP] * 2 + 0];
+ GLchan a = lut[rgba[i][ACOMP] * 2 + 1];;
+ rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = l;
+ rgba[i][ACOMP] = a;
+ }
+ }
+ else
+#endif
+ {
+ const GLfloat scale = (GLfloat) (table->Size - 1) / CHAN_MAXF;
+ const GLchan *lut = (const GLchan *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint jL = IROUND((GLfloat) rgba[i][RCOMP] * scale);
+ GLint jA = IROUND((GLfloat) rgba[i][ACOMP] * scale);
+ GLchan luminance = lut[jL * 2 + 0];
+ GLchan alpha = lut[jA * 2 + 1];
+ rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = luminance;
+ rgba[i][ACOMP] = alpha;
+ }
+ }
+ }
+ break;
+ case GL_RGB:
+ /* replace RGB with RGB */
+ if (table->Type == GL_FLOAT) {
+ const GLfloat scale = (GLfloat) (table->Size - 1) / CHAN_MAXF;
+ const GLfloat *lut = (const GLfloat *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint jR = IROUND((GLfloat) rgba[i][RCOMP] * scale);
+ GLint jG = IROUND((GLfloat) rgba[i][GCOMP] * scale);
+ GLint jB = IROUND((GLfloat) rgba[i][BCOMP] * scale);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][RCOMP], lut[jR * 3 + 0]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][GCOMP], lut[jG * 3 + 1]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][BCOMP], lut[jB * 3 + 2]);
+ }
+ }
+ else {
+#if CHAN_TYPE == GL_UNSIGNED_BYTE
+ if (table->Size == 256) {
+ /* common case */
+ const GLchan *lut = (const GLchan *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ rgba[i][RCOMP] = lut[rgba[i][RCOMP] * 3 + 0];
+ rgba[i][GCOMP] = lut[rgba[i][GCOMP] * 3 + 1];
+ rgba[i][BCOMP] = lut[rgba[i][BCOMP] * 3 + 2];
+ }
+ }
+ else
+#endif
+ {
+ const GLfloat scale = (GLfloat) (table->Size - 1) / CHAN_MAXF;
+ const GLchan *lut = (const GLchan *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint jR = IROUND((GLfloat) rgba[i][RCOMP] * scale);
+ GLint jG = IROUND((GLfloat) rgba[i][GCOMP] * scale);
+ GLint jB = IROUND((GLfloat) rgba[i][BCOMP] * scale);
+ rgba[i][RCOMP] = lut[jR * 3 + 0];
+ rgba[i][GCOMP] = lut[jG * 3 + 1];
+ rgba[i][BCOMP] = lut[jB * 3 + 2];
+ }
+ }
+ }
+ break;
+ case GL_RGBA:
+ /* replace RGBA with RGBA */
+ if (table->Type == GL_FLOAT) {
+ const GLfloat scale = (GLfloat) (table->Size - 1) / CHAN_MAXF;
+ const GLfloat *lut = (const GLfloat *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint jR = IROUND((GLfloat) rgba[i][RCOMP] * scale);
+ GLint jG = IROUND((GLfloat) rgba[i][GCOMP] * scale);
+ GLint jB = IROUND((GLfloat) rgba[i][BCOMP] * scale);
+ GLint jA = IROUND((GLfloat) rgba[i][ACOMP] * scale);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][RCOMP], lut[jR * 4 + 0]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][GCOMP], lut[jG * 4 + 1]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][BCOMP], lut[jB * 4 + 2]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][ACOMP], lut[jA * 4 + 3]);
+ }
+ }
+ else {
+#if CHAN_TYPE == GL_UNSIGNED_BYTE
+ if (table->Size == 256) {
+ /* common case */
+ const GLchan *lut = (const GLchan *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ rgba[i][RCOMP] = lut[rgba[i][RCOMP] * 4 + 0];
+ rgba[i][GCOMP] = lut[rgba[i][GCOMP] * 4 + 1];
+ rgba[i][BCOMP] = lut[rgba[i][BCOMP] * 4 + 2];
+ rgba[i][ACOMP] = lut[rgba[i][ACOMP] * 4 + 3];
+ }
+ }
+ else
+#endif
+ {
+ const GLfloat scale = (GLfloat) (table->Size - 1) / CHAN_MAXF;
+ const GLfloat *lut = (const GLfloat *) table->Table;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint jR = IROUND((GLfloat) rgba[i][RCOMP] * scale);
+ GLint jG = IROUND((GLfloat) rgba[i][GCOMP] * scale);
+ GLint jB = IROUND((GLfloat) rgba[i][BCOMP] * scale);
+ GLint jA = IROUND((GLfloat) rgba[i][ACOMP] * scale);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][RCOMP], lut[jR * 4 + 0]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][GCOMP], lut[jG * 4 + 1]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][BCOMP], lut[jB * 4 + 2]);
+ CLAMPED_FLOAT_TO_CHAN(rgba[i][ACOMP], lut[jA * 4 + 3]);
+ }
}
}
break;
default:
- _mesa_problem(NULL, "Bad format in _mesa_lookup_rgba");
+ _mesa_problem(NULL, "Bad format in _mesa_lookup_rgba_chan");
return;
}
}
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