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mesa: texture combine clean-ups 

Use MAX_COMBINER_TERMS instead of 4.
Rename some vars.
Update comments.
tags/mesa_7_5_rc1
Brian Paul 16 lat temu
rodzic
a35ad020f9
commit
bd9b2be828
5 zmienionych plików z 108 dodań i 112 usunięć
Widok podzielony Pokaż statystyki zmian
  1. 10
    5
      src/mesa/main/mtypes.h
  2. 25
    25
      src/mesa/main/texenv.c
  3. 5
    8
      src/mesa/main/texenvprogram.c
  4. 0
    2
      src/mesa/swrast/s_fragprog.c
  5. 68
    72
      src/mesa/swrast/s_texcombine.c

+ 10
- 5
src/mesa/main/mtypes.h Wyświetl plik

@@ -1338,18 +1338,23 @@ 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 */

+ 25
- 25
src/mesa/main/texenv.c Wyświetl plik

@@ -184,7 +184,7 @@ 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 &&
@@ -194,24 +194,24 @@ 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 {
@@ -220,20 +220,20 @@ 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 {
@@ -246,7 +246,7 @@ set_combiner_source(GLcontext *ctx,
return;
}

assert(src < 4);
assert(term < MAX_COMBINER_TERMS);

/*
* Error-check param (the source term)
@@ -288,9 +288,9 @@ 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;
}


@@ -300,7 +300,7 @@ 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 &&
@@ -311,16 +311,16 @@ 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 {
@@ -330,7 +330,7 @@ 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 {
@@ -339,16 +339,16 @@ 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 {
@@ -358,7 +358,7 @@ 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 {
@@ -371,7 +371,7 @@ set_combiner_operand(GLcontext *ctx,
return;
}

assert(op < 4);
assert(term < MAX_COMBINER_TERMS);

/*
* Error-check param (the source operand)
@@ -397,9 +397,9 @@ 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;
}



+ 5
- 8
src/mesa/main/texenvprogram.c Wyświetl plik

@@ -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:5;
struct mode_opt OptRGB[MAX_TERMS];
struct mode_opt OptRGB[MAX_COMBINER_TERMS];

GLuint NumArgsA:3;
GLuint ModeA:5;
struct mode_opt OptA[MAX_TERMS];
struct mode_opt OptA[MAX_COMBINER_TERMS];
} unit[8];
};

@@ -389,7 +386,7 @@ 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 =
@@ -972,11 +969,11 @@ 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) */


+ 0
- 2
src/mesa/swrast/s_fragprog.c Wyświetl plik

@@ -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);

+ 68
- 72
src/mesa/swrast/s_texcombine.c Wyświetl plik

@@ -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;
case GL_BUMP_ENVMAP_ATI:
@@ -427,13 +425,13 @@ 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:
@@ -441,13 +439,13 @@ 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;
@@ -457,13 +455,13 @@ 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;
@@ -471,30 +469,30 @@ 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:
@@ -841,8 +839,6 @@ 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:

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