summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorBrian Paul <brianp@vmware.com>2009-03-08 17:58:54 -0600
committerBrian Paul <brianp@vmware.com>2009-03-08 17:58:54 -0600
commit6f52a9f4b8527b12c6b6d90bd57241429843488e (patch)
treefe09675be32bbbb336afc8bf2e8d4ca409618471
parent0077faca3772ad3f392ed615166f29904969a4a4 (diff)
mesa: texture combine clean-ups
Use MAX_COMBINER_TERMS instead of 4. Rename some vars. Update comments.
-rw-r--r--src/mesa/main/mtypes.h15
-rw-r--r--src/mesa/main/texenv.c50
-rw-r--r--src/mesa/main/texenvprogram.c13
-rw-r--r--src/mesa/swrast/s_fragprog.c2
-rw-r--r--src/mesa/swrast/s_texcombine.c140
5 files changed, 108 insertions, 112 deletions
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 57b7065b83e..9c1deef6673 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1342,18 +1342,23 @@ struct gl_texture_object
};
+/** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
+#define MAX_COMBINER_TERMS 4
+
+
/**
* Texture combine environment state.
- * Up to four combiner sources are possible with GL_NV_texture_env_combine4.
*/
struct gl_tex_env_combine_state
{
GLenum ModeRGB; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
GLenum ModeA; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
- GLenum SourceRGB[4]; /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
- GLenum SourceA[4]; /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
- GLenum OperandRGB[4]; /**< SRC_COLOR, ONE_MINUS_SRC_COLOR, etc */
- GLenum OperandA[4]; /**< SRC_ALPHA, ONE_MINUS_SRC_ALPHA, etc */
+ /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
+ GLenum SourceRGB[MAX_COMBINER_TERMS];
+ GLenum SourceA[MAX_COMBINER_TERMS];
+ /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
+ GLenum OperandRGB[MAX_COMBINER_TERMS];
+ GLenum OperandA[MAX_COMBINER_TERMS];
GLuint ScaleShiftRGB; /**< 0, 1 or 2 */
GLuint ScaleShiftA; /**< 0, 1 or 2 */
GLuint _NumArgsRGB; /**< Number of inputs used for the RGB combiner */
diff --git a/src/mesa/main/texenv.c b/src/mesa/main/texenv.c
index 95547a500ee..f4689625f93 100644
--- a/src/mesa/main/texenv.c
+++ b/src/mesa/main/texenv.c
@@ -180,7 +180,7 @@ set_combiner_source(GLcontext *ctx,
struct gl_texture_unit *texUnit,
GLenum pname, GLenum param)
{
- GLuint src;
+ GLuint term;
GLboolean alpha, legal;
if (!ctx->Extensions.EXT_texture_env_combine &&
@@ -190,24 +190,24 @@ set_combiner_source(GLcontext *ctx,
}
/*
- * Translate pname to (src, alpha).
+ * Translate pname to (term, alpha).
*/
switch (pname) {
case GL_SOURCE0_RGB:
- src = 0;
+ term = 0;
alpha = GL_FALSE;
break;
case GL_SOURCE1_RGB:
- src = 1;
+ term = 1;
alpha = GL_FALSE;
break;
case GL_SOURCE2_RGB:
- src = 2;
+ term = 2;
alpha = GL_FALSE;
break;
case GL_SOURCE3_RGB_NV:
if (ctx->Extensions.NV_texture_env_combine4) {
- src = 3;
+ term = 3;
alpha = GL_FALSE;
}
else {
@@ -216,20 +216,20 @@ set_combiner_source(GLcontext *ctx,
}
break;
case GL_SOURCE0_ALPHA:
- src = 0;
+ term = 0;
alpha = GL_TRUE;
break;
case GL_SOURCE1_ALPHA:
- src = 1;
+ term = 1;
alpha = GL_TRUE;
break;
case GL_SOURCE2_ALPHA:
- src = 2;
+ term = 2;
alpha = GL_TRUE;
break;
case GL_SOURCE3_ALPHA_NV:
if (ctx->Extensions.NV_texture_env_combine4) {
- src = 3;
+ term = 3;
alpha = GL_TRUE;
}
else {
@@ -242,7 +242,7 @@ set_combiner_source(GLcontext *ctx,
return;
}
- assert(src < 4);
+ assert(term < MAX_COMBINER_TERMS);
/*
* Error-check param (the source term)
@@ -284,9 +284,9 @@ set_combiner_source(GLcontext *ctx,
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
if (alpha)
- texUnit->Combine.SourceA[src] = param;
+ texUnit->Combine.SourceA[term] = param;
else
- texUnit->Combine.SourceRGB[src] = param;
+ texUnit->Combine.SourceRGB[term] = param;
}
@@ -296,7 +296,7 @@ set_combiner_operand(GLcontext *ctx,
struct gl_texture_unit *texUnit,
GLenum pname, GLenum param)
{
- GLuint op;
+ GLuint term;
GLboolean alpha, legal;
if (!ctx->Extensions.EXT_texture_env_combine &&
@@ -307,16 +307,16 @@ set_combiner_operand(GLcontext *ctx,
switch (pname) {
case GL_OPERAND0_RGB:
- op = 0;
+ term = 0;
alpha = GL_FALSE;
break;
case GL_OPERAND1_RGB:
- op = 1;
+ term = 1;
alpha = GL_FALSE;
break;
case GL_OPERAND2_RGB:
if (ctx->Extensions.ARB_texture_env_combine) {
- op = 2;
+ term = 2;
alpha = GL_FALSE;
}
else {
@@ -326,7 +326,7 @@ set_combiner_operand(GLcontext *ctx,
break;
case GL_OPERAND3_RGB_NV:
if (ctx->Extensions.NV_texture_env_combine4) {
- op = 3;
+ term = 3;
alpha = GL_FALSE;
}
else {
@@ -335,16 +335,16 @@ set_combiner_operand(GLcontext *ctx,
}
break;
case GL_OPERAND0_ALPHA:
- op = 0;
+ term = 0;
alpha = GL_TRUE;
break;
case GL_OPERAND1_ALPHA:
- op = 1;
+ term = 1;
alpha = GL_TRUE;
break;
case GL_OPERAND2_ALPHA:
if (ctx->Extensions.ARB_texture_env_combine) {
- op = 2;
+ term = 2;
alpha = GL_TRUE;
}
else {
@@ -354,7 +354,7 @@ set_combiner_operand(GLcontext *ctx,
break;
case GL_OPERAND3_ALPHA_NV:
if (ctx->Extensions.NV_texture_env_combine4) {
- op = 3;
+ term = 3;
alpha = GL_TRUE;
}
else {
@@ -367,7 +367,7 @@ set_combiner_operand(GLcontext *ctx,
return;
}
- assert(op < 4);
+ assert(term < MAX_COMBINER_TERMS);
/*
* Error-check param (the source operand)
@@ -393,9 +393,9 @@ set_combiner_operand(GLcontext *ctx,
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
if (alpha)
- texUnit->Combine.OperandA[op] = param;
+ texUnit->Combine.OperandA[term] = param;
else
- texUnit->Combine.OperandRGB[op] = param;
+ texUnit->Combine.OperandRGB[term] = param;
}
diff --git a/src/mesa/main/texenvprogram.c b/src/mesa/main/texenvprogram.c
index 51c13a563d6..44585b4abeb 100644
--- a/src/mesa/main/texenvprogram.c
+++ b/src/mesa/main/texenvprogram.c
@@ -39,9 +39,6 @@
#include "texenvprogram.h"
-#define MAX_TERMS 4
-
-
/*
* Note on texture units:
*
@@ -95,11 +92,11 @@ struct state_key {
GLuint NumArgsRGB:3;
GLuint ModeRGB:4;
- struct mode_opt OptRGB[MAX_TERMS];
+ struct mode_opt OptRGB[MAX_COMBINER_TERMS];
GLuint NumArgsA:3;
GLuint ModeA:4;
- struct mode_opt OptA[MAX_TERMS];
+ struct mode_opt OptA[MAX_COMBINER_TERMS];
} unit[8];
};
@@ -387,7 +384,7 @@ static void make_state_key( GLcontext *ctx, struct state_key *key )
key->unit[i].ScaleShiftRGB = texUnit->_CurrentCombine->ScaleShiftRGB;
key->unit[i].ScaleShiftA = texUnit->_CurrentCombine->ScaleShiftA;
- for (j = 0; j < MAX_TERMS; j++) {
+ for (j = 0; j < MAX_COMBINER_TERMS; j++) {
key->unit[i].OptRGB[j].Operand =
translate_operand(texUnit->_CurrentCombine->OperandRGB[j]);
key->unit[i].OptA[j].Operand =
@@ -953,11 +950,11 @@ static struct ureg emit_combine( struct texenv_fragment_program *p,
GLuint mode,
const struct mode_opt *opt)
{
- struct ureg src[MAX_TERMS];
+ struct ureg src[MAX_COMBINER_TERMS];
struct ureg tmp, half;
GLuint i;
- assert(nr <= MAX_TERMS);
+ assert(nr <= MAX_COMBINER_TERMS);
tmp = undef; /* silence warning (bug 5318) */
diff --git a/src/mesa/swrast/s_fragprog.c b/src/mesa/swrast/s_fragprog.c
index 867390876ca..4524acf34e1 100644
--- a/src/mesa/swrast/s_fragprog.c
+++ b/src/mesa/swrast/s_fragprog.c
@@ -74,7 +74,6 @@ fetch_texel_lod( GLcontext *ctx, const GLfloat texcoord[4], GLfloat lambda,
lambda = CLAMP(lambda, texObj->MinLod, texObj->MaxLod);
- /* XXX use a float-valued TextureSample routine here!!! */
swrast->TextureSample[unit](ctx, texObj, 1,
(const GLfloat (*)[4]) texcoord,
&lambda, &rgba);
@@ -116,7 +115,6 @@ fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4],
lambda = CLAMP(lambda, texObj->MinLod, texObj->MaxLod);
- /* XXX use a float-valued TextureSample routine here!!! */
swrast->TextureSample[unit](ctx, texObj, 1,
(const GLfloat (*)[4]) texcoord,
&lambda, &rgba);
diff --git a/src/mesa/swrast/s_texcombine.c b/src/mesa/swrast/s_texcombine.c
index d41700a1bba..0edc22a5285 100644
--- a/src/mesa/swrast/s_texcombine.c
+++ b/src/mesa/swrast/s_texcombine.c
@@ -37,23 +37,23 @@
#include "s_texcombine.h"
-#define MAX_COMBINER_TERMS 4
-
-
/**
- * Do texture application for GL_ARB/EXT_texture_env_combine.
- * This function also supports GL_{EXT,ARB}_texture_env_dot3 and
- * GL_ATI_texture_env_combine3. Since "classic" texture environments are
- * implemented using GL_ARB_texture_env_combine-like state, this same function
- * is used for classic texture environment application as well.
+ * Do texture application for:
+ * GL_EXT_texture_env_combine
+ * GL_ARB_texture_env_combine
+ * GL_EXT_texture_env_dot3
+ * GL_ARB_texture_env_dot3
+ * GL_ATI_texture_env_combine3
+ * GL_NV_texture_env_combine4
+ * conventional GL texture env modes
*
* \param ctx rendering context
- * \param textureUnit the texture unit to apply
+ * \param unit the texture combiner unit
* \param n number of fragments to process (span width)
* \param primary_rgba incoming fragment color array
* \param texelBuffer pointer to texel colors for all texture units
*
- * \param rgba incoming colors, which get modified here
+ * \param rgba incoming/result fragment colors
*/
static void
texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
@@ -65,16 +65,14 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
const struct gl_tex_env_combine_state *combine = textureUnit->_CurrentCombine;
const GLfloat (*argRGB [MAX_COMBINER_TERMS])[4];
const GLfloat (*argA [MAX_COMBINER_TERMS])[4];
- const GLfloat RGBmult = (GLfloat) (1 << combine->ScaleShiftRGB);
- const GLfloat Amult = (GLfloat) (1 << combine->ScaleShiftA);
- const GLuint numColorArgs = combine->_NumArgsRGB;
- const GLuint numAlphaArgs = combine->_NumArgsA;
+ const GLfloat scaleRGB = (GLfloat) (1 << combine->ScaleShiftRGB);
+ const GLfloat scaleA = (GLfloat) (1 << combine->ScaleShiftA);
+ const GLuint numArgsRGB = combine->_NumArgsRGB;
+ const GLuint numArgsA = combine->_NumArgsA;
GLfloat ccolor[MAX_COMBINER_TERMS][MAX_WIDTH][4]; /* temp color buffers */
GLfloat rgba[MAX_WIDTH][4];
GLuint i, term;
- ASSERT(ctx->Extensions.EXT_texture_env_combine ||
- ctx->Extensions.ARB_texture_env_combine);
ASSERT(CONST_SWRAST_CONTEXT(ctx)->_AnyTextureCombine);
for (i = 0; i < n; i++) {
@@ -97,7 +95,7 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
/*
* Do operand setup for up to 4 operands. Loop over the terms.
*/
- for (term = 0; term < numColorArgs; term++) {
+ for (term = 0; term < numArgsRGB; term++) {
const GLenum srcRGB = combine->SourceRGB[term];
const GLenum operandRGB = combine->OperandRGB[term];
@@ -193,9 +191,9 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
}
/*
- * Set up the argA[i] pointers
+ * Set up the argA[term] pointers
*/
- for (term = 0; term < numAlphaArgs; term++) {
+ for (term = 0; term < numArgsA; term++) {
const GLenum srcA = combine->SourceA[term];
const GLenum operandA = combine->OperandA[term];
@@ -269,16 +267,16 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
switch (combine->ModeRGB) {
case GL_REPLACE:
for (i = 0; i < n; i++) {
- rgba[i][RCOMP] = arg0[i][RCOMP] * RGBmult;
- rgba[i][GCOMP] = arg0[i][GCOMP] * RGBmult;
- rgba[i][BCOMP] = arg0[i][BCOMP] * RGBmult;
+ rgba[i][RCOMP] = arg0[i][RCOMP] * scaleRGB;
+ rgba[i][GCOMP] = arg0[i][GCOMP] * scaleRGB;
+ rgba[i][BCOMP] = arg0[i][BCOMP] * scaleRGB;
}
break;
case GL_MODULATE:
for (i = 0; i < n; i++) {
- rgba[i][RCOMP] = arg0[i][RCOMP] * arg1[i][RCOMP] * RGBmult;
- rgba[i][GCOMP] = arg0[i][GCOMP] * arg1[i][GCOMP] * RGBmult;
- rgba[i][BCOMP] = arg0[i][BCOMP] * arg1[i][BCOMP] * RGBmult;
+ rgba[i][RCOMP] = arg0[i][RCOMP] * arg1[i][RCOMP] * scaleRGB;
+ rgba[i][GCOMP] = arg0[i][GCOMP] * arg1[i][GCOMP] * scaleRGB;
+ rgba[i][BCOMP] = arg0[i][BCOMP] * arg1[i][BCOMP] * scaleRGB;
}
break;
case GL_ADD:
@@ -286,19 +284,19 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
/* (a * b) + (c * d) */
for (i = 0; i < n; i++) {
rgba[i][RCOMP] = (arg0[i][RCOMP] * arg1[i][RCOMP] +
- arg2[i][RCOMP] * arg3[i][RCOMP]) * RGBmult;
+ arg2[i][RCOMP] * arg3[i][RCOMP]) * scaleRGB;
rgba[i][GCOMP] = (arg0[i][GCOMP] * arg1[i][GCOMP] +
- arg2[i][GCOMP] * arg3[i][GCOMP]) * RGBmult;
+ arg2[i][GCOMP] * arg3[i][GCOMP]) * scaleRGB;
rgba[i][BCOMP] = (arg0[i][BCOMP] * arg1[i][BCOMP] +
- arg2[i][BCOMP] * arg3[i][BCOMP]) * RGBmult;
+ arg2[i][BCOMP] * arg3[i][BCOMP]) * scaleRGB;
}
}
else {
/* 2-term addition */
for (i = 0; i < n; i++) {
- rgba[i][RCOMP] = (arg0[i][RCOMP] + arg1[i][RCOMP]) * RGBmult;
- rgba[i][GCOMP] = (arg0[i][GCOMP] + arg1[i][GCOMP]) * RGBmult;
- rgba[i][BCOMP] = (arg0[i][BCOMP] + arg1[i][BCOMP]) * RGBmult;
+ rgba[i][RCOMP] = (arg0[i][RCOMP] + arg1[i][RCOMP]) * scaleRGB;
+ rgba[i][GCOMP] = (arg0[i][GCOMP] + arg1[i][GCOMP]) * scaleRGB;
+ rgba[i][BCOMP] = (arg0[i][BCOMP] + arg1[i][BCOMP]) * scaleRGB;
}
}
break;
@@ -307,45 +305,45 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
/* (a * b) + (c * d) - 0.5 */
for (i = 0; i < n; i++) {
rgba[i][RCOMP] = (arg0[i][RCOMP] + arg1[i][RCOMP] *
- arg2[i][RCOMP] + arg3[i][RCOMP] - 0.5) * RGBmult;
+ arg2[i][RCOMP] + arg3[i][RCOMP] - 0.5) * scaleRGB;
rgba[i][GCOMP] = (arg0[i][GCOMP] + arg1[i][GCOMP] *
- arg2[i][GCOMP] + arg3[i][GCOMP] - 0.5) * RGBmult;
+ arg2[i][GCOMP] + arg3[i][GCOMP] - 0.5) * scaleRGB;
rgba[i][BCOMP] = (arg0[i][BCOMP] + arg1[i][BCOMP] *
- arg2[i][BCOMP] + arg3[i][BCOMP] - 0.5) * RGBmult;
+ arg2[i][BCOMP] + arg3[i][BCOMP] - 0.5) * scaleRGB;
}
}
else {
for (i = 0; i < n; i++) {
- rgba[i][RCOMP] = (arg0[i][RCOMP] + arg1[i][RCOMP] - 0.5) * RGBmult;
- rgba[i][GCOMP] = (arg0[i][GCOMP] + arg1[i][GCOMP] - 0.5) * RGBmult;
- rgba[i][BCOMP] = (arg0[i][BCOMP] + arg1[i][BCOMP] - 0.5) * RGBmult;
+ rgba[i][RCOMP] = (arg0[i][RCOMP] + arg1[i][RCOMP] - 0.5) * scaleRGB;
+ rgba[i][GCOMP] = (arg0[i][GCOMP] + arg1[i][GCOMP] - 0.5) * scaleRGB;
+ rgba[i][BCOMP] = (arg0[i][BCOMP] + arg1[i][BCOMP] - 0.5) * scaleRGB;
}
}
break;
case GL_INTERPOLATE:
for (i = 0; i < n; i++) {
rgba[i][RCOMP] = (arg0[i][RCOMP] * arg2[i][RCOMP] +
- arg1[i][RCOMP] * (1.0F - arg2[i][RCOMP])) * RGBmult;
+ arg1[i][RCOMP] * (1.0F - arg2[i][RCOMP])) * scaleRGB;
rgba[i][GCOMP] = (arg0[i][GCOMP] * arg2[i][GCOMP] +
- arg1[i][GCOMP] * (1.0F - arg2[i][GCOMP])) * RGBmult;
+ arg1[i][GCOMP] * (1.0F - arg2[i][GCOMP])) * scaleRGB;
rgba[i][BCOMP] = (arg0[i][BCOMP] * arg2[i][BCOMP] +
- arg1[i][BCOMP] * (1.0F - arg2[i][BCOMP])) * RGBmult;
+ arg1[i][BCOMP] * (1.0F - arg2[i][BCOMP])) * scaleRGB;
}
break;
case GL_SUBTRACT:
for (i = 0; i < n; i++) {
- rgba[i][RCOMP] = (arg0[i][RCOMP] - arg1[i][RCOMP]) * RGBmult;
- rgba[i][GCOMP] = (arg0[i][GCOMP] - arg1[i][GCOMP]) * RGBmult;
- rgba[i][BCOMP] = (arg0[i][BCOMP] - arg1[i][BCOMP]) * RGBmult;
+ rgba[i][RCOMP] = (arg0[i][RCOMP] - arg1[i][RCOMP]) * scaleRGB;
+ rgba[i][GCOMP] = (arg0[i][GCOMP] - arg1[i][GCOMP]) * scaleRGB;
+ rgba[i][BCOMP] = (arg0[i][BCOMP] - arg1[i][BCOMP]) * scaleRGB;
}
break;
case GL_DOT3_RGB_EXT:
case GL_DOT3_RGBA_EXT:
/* Do not scale the result by 1 2 or 4 */
for (i = 0; i < n; i++) {
- GLfloat dot = ((arg0[i][RCOMP]-0.5F) * (arg1[i][RCOMP]-0.5F) +
- (arg0[i][GCOMP]-0.5F) * (arg1[i][GCOMP]-0.5F) +
- (arg0[i][BCOMP]-0.5F) * (arg1[i][BCOMP]-0.5F))
+ GLfloat dot = ((arg0[i][RCOMP] - 0.5F) * (arg1[i][RCOMP] - 0.5F) +
+ (arg0[i][GCOMP] - 0.5F) * (arg1[i][GCOMP] - 0.5F) +
+ (arg0[i][BCOMP] - 0.5F) * (arg1[i][BCOMP] - 0.5F))
* 4.0F;
dot = CLAMP(dot, 0.0F, 1.0F);
rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = (GLfloat) dot;
@@ -355,10 +353,10 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
case GL_DOT3_RGBA:
/* DO scale the result by 1 2 or 4 */
for (i = 0; i < n; i++) {
- GLfloat dot = ((arg0[i][RCOMP]-0.5F) * (arg1[i][RCOMP]-0.5F) +
- (arg0[i][GCOMP]-0.5F) * (arg1[i][GCOMP]-0.5F) +
- (arg0[i][BCOMP]-0.5F) * (arg1[i][BCOMP]-0.5F))
- * 4.0F * RGBmult;
+ GLfloat dot = ((arg0[i][RCOMP] - 0.5F) * (arg1[i][RCOMP] - 0.5F) +
+ (arg0[i][GCOMP] - 0.5F) * (arg1[i][GCOMP] - 0.5F) +
+ (arg0[i][BCOMP] - 0.5F) * (arg1[i][BCOMP] - 0.5F))
+ * 4.0F * scaleRGB;
dot = CLAMP(dot, 0.0, 1.0F);
rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = (GLfloat) dot;
}
@@ -366,31 +364,31 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
case GL_MODULATE_ADD_ATI:
for (i = 0; i < n; i++) {
rgba[i][RCOMP] = ((arg0[i][RCOMP] * arg2[i][RCOMP]) +
- arg1[i][RCOMP]) * RGBmult;
+ arg1[i][RCOMP]) * scaleRGB;
rgba[i][GCOMP] = ((arg0[i][GCOMP] * arg2[i][GCOMP]) +
- arg1[i][GCOMP]) * RGBmult;
+ arg1[i][GCOMP]) * scaleRGB;
rgba[i][BCOMP] = ((arg0[i][BCOMP] * arg2[i][BCOMP]) +
- arg1[i][BCOMP]) * RGBmult;
+ arg1[i][BCOMP]) * scaleRGB;
}
break;
case GL_MODULATE_SIGNED_ADD_ATI:
for (i = 0; i < n; i++) {
rgba[i][RCOMP] = ((arg0[i][RCOMP] * arg2[i][RCOMP]) +
- arg1[i][RCOMP] - 0.5) * RGBmult;
+ arg1[i][RCOMP] - 0.5) * scaleRGB;
rgba[i][GCOMP] = ((arg0[i][GCOMP] * arg2[i][GCOMP]) +
- arg1[i][GCOMP] - 0.5) * RGBmult;
+ arg1[i][GCOMP] - 0.5) * scaleRGB;
rgba[i][BCOMP] = ((arg0[i][BCOMP] * arg2[i][BCOMP]) +
- arg1[i][BCOMP] - 0.5) * RGBmult;
+ arg1[i][BCOMP] - 0.5) * scaleRGB;
}
break;
case GL_MODULATE_SUBTRACT_ATI:
for (i = 0; i < n; i++) {
rgba[i][RCOMP] = ((arg0[i][RCOMP] * arg2[i][RCOMP]) -
- arg1[i][RCOMP]) * RGBmult;
+ arg1[i][RCOMP]) * scaleRGB;
rgba[i][GCOMP] = ((arg0[i][GCOMP] * arg2[i][GCOMP]) -
- arg1[i][GCOMP]) * RGBmult;
+ arg1[i][GCOMP]) * scaleRGB;
rgba[i][BCOMP] = ((arg0[i][BCOMP] * arg2[i][BCOMP]) -
- arg1[i][BCOMP]) * RGBmult;
+ arg1[i][BCOMP]) * scaleRGB;
}
break;
default:
@@ -408,13 +406,13 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
switch (combine->ModeA) {
case GL_REPLACE:
for (i = 0; i < n; i++) {
- GLfloat a = arg0[i][ACOMP] * Amult;
+ GLfloat a = arg0[i][ACOMP] * scaleA;
rgba[i][ACOMP] = (GLfloat) MIN2(a, 1.0F);
}
break;
case GL_MODULATE:
for (i = 0; i < n; i++) {
- rgba[i][ACOMP] = arg0[i][ACOMP] * arg1[i][ACOMP] * Amult;
+ rgba[i][ACOMP] = arg0[i][ACOMP] * arg1[i][ACOMP] * scaleA;
}
break;
case GL_ADD:
@@ -422,13 +420,13 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
/* (a * b) + (c * d) */
for (i = 0; i < n; i++) {
rgba[i][ACOMP] = (arg0[i][ACOMP] * arg1[i][ACOMP] +
- arg2[i][ACOMP] * arg3[i][ACOMP]) * Amult;
+ arg2[i][ACOMP] * arg3[i][ACOMP]) * scaleA;
}
}
else {
/* two-term add */
for (i = 0; i < n; i++) {
- rgba[i][ACOMP] = (arg0[i][ACOMP] + arg1[i][ACOMP]) * Amult;
+ rgba[i][ACOMP] = (arg0[i][ACOMP] + arg1[i][ACOMP]) * scaleA;
}
}
break;
@@ -438,13 +436,13 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
for (i = 0; i < n; i++) {
rgba[i][ACOMP] = (arg0[i][ACOMP] * arg1[i][ACOMP] +
arg2[i][ACOMP] * arg3[i][ACOMP] -
- 0.5) * Amult;
+ 0.5) * scaleA;
}
}
else {
/* a + b - 0.5 */
for (i = 0; i < n; i++) {
- rgba[i][ACOMP] = (arg0[i][ACOMP] + arg1[i][ACOMP] - 0.5F) * Amult;
+ rgba[i][ACOMP] = (arg0[i][ACOMP] + arg1[i][ACOMP] - 0.5F) * scaleA;
}
}
break;
@@ -452,30 +450,30 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
for (i=0; i<n; i++) {
rgba[i][ACOMP] = (arg0[i][ACOMP] * arg2[i][ACOMP] +
arg1[i][ACOMP] * (1.0F - arg2[i][ACOMP]))
- * Amult;
+ * scaleA;
}
break;
case GL_SUBTRACT:
for (i = 0; i < n; i++) {
- rgba[i][ACOMP] = (arg0[i][ACOMP] - arg1[i][ACOMP]) * Amult;
+ rgba[i][ACOMP] = (arg0[i][ACOMP] - arg1[i][ACOMP]) * scaleA;
}
break;
case GL_MODULATE_ADD_ATI:
for (i = 0; i < n; i++) {
rgba[i][ACOMP] = ((arg0[i][ACOMP] * arg2[i][ACOMP])
- + arg1[i][ACOMP]) * Amult;
+ + arg1[i][ACOMP]) * scaleA;
}
break;
case GL_MODULATE_SIGNED_ADD_ATI:
for (i = 0; i < n; i++) {
rgba[i][ACOMP] = ((arg0[i][ACOMP] * arg2[i][ACOMP]) +
- arg1[i][ACOMP] - 0.5F) * Amult;
+ arg1[i][ACOMP] - 0.5F) * scaleA;
}
break;
case GL_MODULATE_SUBTRACT_ATI:
for (i = 0; i < n; i++) {
rgba[i][ACOMP] = ((arg0[i][ACOMP] * arg2[i][ACOMP])
- - arg1[i][ACOMP]) * Amult;
+ - arg1[i][ACOMP]) * scaleA;
}
break;
default:
@@ -822,8 +820,6 @@ texture_apply( const GLcontext *ctx,
}
break;
- /* XXX don't clamp results if GLfloat is float??? */
-
case GL_ADD: /* GL_EXT_texture_add_env */
switch (format) {
case GL_ALPHA: