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Diffstat (limited to 'src/mesa/swrast/s_texcombine.c')
-rw-r--r--src/mesa/swrast/s_texcombine.c1273
1 files changed, 294 insertions, 979 deletions
diff --git a/src/mesa/swrast/s_texcombine.c b/src/mesa/swrast/s_texcombine.c
index aa28311672..fae7280efb 100644
--- a/src/mesa/swrast/s_texcombine.c
+++ b/src/mesa/swrast/s_texcombine.c
@@ -29,7 +29,6 @@
#include "main/colormac.h"
#include "main/image.h"
#include "main/imports.h"
-#include "main/macros.h"
#include "main/pixel.h"
#include "shader/prog_instruction.h"
@@ -37,109 +36,128 @@
#include "s_texcombine.h"
-#define PROD(A,B) ( (GLuint)(A) * ((GLuint)(B)+1) )
-#define S_PROD(A,B) ( (GLint)(A) * ((GLint)(B)+1) )
-#if CHAN_BITS == 32
-typedef GLfloat ChanTemp;
-#else
-typedef GLuint ChanTemp;
-#endif
+/**
+ * Pointer to array of float[4]
+ * This type makes the code below more concise and avoids a lot of casting.
+ */
+typedef float (*float4_array)[4];
+
+
+/**
+ * Return array of texels for given unit.
+ */
+static INLINE float4_array
+get_texel_array(SWcontext *swrast, GLuint unit)
+{
+ return (float4_array)
+ (swrast->TexelBuffer + unit * MAX_WIDTH * 4 * sizeof(GLfloat));
+}
+
/**
- * 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,
- CONST GLchan (*primary_rgba)[4],
- CONST GLchan *texelBuffer,
- GLchan (*rgba)[4] )
+texture_combine( GLcontext *ctx, GLuint unit, GLuint n,
+ const float4_array primary_rgba,
+ const GLfloat *texelBuffer,
+ GLchan (*rgbaChan)[4] )
{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
const struct gl_texture_unit *textureUnit = &(ctx->Texture.Unit[unit]);
- const GLchan (*argRGB [4])[4];
- const GLchan (*argA [4])[4];
- const GLint RGBshift = textureUnit->_CurrentCombine->ScaleShiftRGB;
- const GLuint Ashift = textureUnit->_CurrentCombine->ScaleShiftA;
-#if CHAN_TYPE == GL_FLOAT
- const GLchan RGBmult = (GLfloat) (1 << RGBshift);
- const GLchan Amult = (GLfloat) (1 << Ashift);
-#else
- const GLint half = (CHAN_MAX + 1) / 2;
-#endif
- static const GLchan one[4] = { CHAN_MAX, CHAN_MAX, CHAN_MAX, CHAN_MAX };
- static const GLchan zero[4] = { 0, 0, 0, 0 };
- const GLuint numColorArgs = textureUnit->_CurrentCombine->_NumArgsRGB;
- const GLuint numAlphaArgs = textureUnit->_CurrentCombine->_NumArgsA;
- GLchan ccolor[4][MAX_WIDTH][4];
- GLuint i, j;
-
- ASSERT(ctx->Extensions.EXT_texture_env_combine ||
- ctx->Extensions.ARB_texture_env_combine);
- ASSERT(CONST_SWRAST_CONTEXT(ctx)->_AnyTextureCombine);
+ const struct gl_tex_env_combine_state *combine = textureUnit->_CurrentCombine;
+ float4_array argRGB[MAX_COMBINER_TERMS];
+ float4_array argA[MAX_COMBINER_TERMS];
+ 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;
+
+ for (i = 0; i < n; i++) {
+ rgba[i][RCOMP] = CHAN_TO_FLOAT(rgbaChan[i][RCOMP]);
+ rgba[i][GCOMP] = CHAN_TO_FLOAT(rgbaChan[i][GCOMP]);
+ rgba[i][BCOMP] = CHAN_TO_FLOAT(rgbaChan[i][BCOMP]);
+ rgba[i][ACOMP] = CHAN_TO_FLOAT(rgbaChan[i][ACOMP]);
+ }
/*
printf("modeRGB 0x%x modeA 0x%x srcRGB1 0x%x srcA1 0x%x srcRGB2 0x%x srcA2 0x%x\n",
- textureUnit->_CurrentCombine->ModeRGB,
- textureUnit->_CurrentCombine->ModeA,
- textureUnit->_CurrentCombine->SourceRGB[0],
- textureUnit->_CurrentCombine->SourceA[0],
- textureUnit->_CurrentCombine->SourceRGB[1],
- textureUnit->_CurrentCombine->SourceA[1]);
+ combine->ModeRGB,
+ combine->ModeA,
+ combine->SourceRGB[0],
+ combine->SourceA[0],
+ combine->SourceRGB[1],
+ combine->SourceA[1]);
*/
/*
* Do operand setup for up to 4 operands. Loop over the terms.
*/
- for (j = 0; j < numColorArgs; j++) {
- const GLenum srcRGB = textureUnit->_CurrentCombine->SourceRGB[j];
+ for (term = 0; term < numArgsRGB; term++) {
+ const GLenum srcRGB = combine->SourceRGB[term];
+ const GLenum operandRGB = combine->OperandRGB[term];
switch (srcRGB) {
case GL_TEXTURE:
- argRGB[j] = (const GLchan (*)[4])
- (texelBuffer + unit * (n * 4 * sizeof(GLchan)));
+ argRGB[term] = get_texel_array(swrast, unit);
break;
case GL_PRIMARY_COLOR:
- argRGB[j] = primary_rgba;
+ argRGB[term] = primary_rgba;
break;
case GL_PREVIOUS:
- argRGB[j] = (const GLchan (*)[4]) rgba;
+ argRGB[term] = rgba;
break;
case GL_CONSTANT:
{
- GLchan (*c)[4] = ccolor[j];
- GLchan red, green, blue, alpha;
- UNCLAMPED_FLOAT_TO_CHAN(red, textureUnit->EnvColor[0]);
- UNCLAMPED_FLOAT_TO_CHAN(green, textureUnit->EnvColor[1]);
- UNCLAMPED_FLOAT_TO_CHAN(blue, textureUnit->EnvColor[2]);
- UNCLAMPED_FLOAT_TO_CHAN(alpha, textureUnit->EnvColor[3]);
+ float4_array c = ccolor[term];
+ GLfloat red = textureUnit->EnvColor[0];
+ GLfloat green = textureUnit->EnvColor[1];
+ GLfloat blue = textureUnit->EnvColor[2];
+ GLfloat alpha = textureUnit->EnvColor[3];
for (i = 0; i < n; i++) {
- c[i][RCOMP] = red;
- c[i][GCOMP] = green;
- c[i][BCOMP] = blue;
- c[i][ACOMP] = alpha;
+ ASSIGN_4V(c[i], red, green, blue, alpha);
}
- argRGB[j] = (const GLchan (*)[4]) ccolor[j];
+ argRGB[term] = ccolor[term];
}
break;
/* GL_ATI_texture_env_combine3 allows GL_ZERO & GL_ONE as sources.
*/
case GL_ZERO:
- argRGB[j] = & zero;
+ {
+ float4_array c = ccolor[term];
+ for (i = 0; i < n; i++) {
+ ASSIGN_4V(c[i], 0.0F, 0.0F, 0.0F, 0.0F);
+ }
+ argRGB[term] = ccolor[term];
+ }
break;
case GL_ONE:
- argRGB[j] = & one;
+ {
+ float4_array c = ccolor[term];
+ for (i = 0; i < n; i++) {
+ ASSIGN_4V(c[i], 1.0F, 1.0F, 1.0F, 1.0F);
+ }
+ argRGB[term] = ccolor[term];
+ }
break;
default:
/* ARB_texture_env_crossbar source */
@@ -148,76 +166,88 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
ASSERT(srcUnit < ctx->Const.MaxTextureUnits);
if (!ctx->Texture.Unit[srcUnit]._ReallyEnabled)
return;
- argRGB[j] = (const GLchan (*)[4])
- (texelBuffer + srcUnit * (n * 4 * sizeof(GLchan)));
+ argRGB[term] = get_texel_array(swrast, srcUnit);
}
}
- if (textureUnit->_CurrentCombine->OperandRGB[j] != GL_SRC_COLOR) {
- const GLchan (*src)[4] = argRGB[j];
- GLchan (*dst)[4] = ccolor[j];
+ if (operandRGB != GL_SRC_COLOR) {
+ float4_array src = argRGB[term];
+ float4_array dst = ccolor[term];
- /* point to new arg[j] storage */
- argRGB[j] = (const GLchan (*)[4]) ccolor[j];
+ /* point to new arg[term] storage */
+ argRGB[term] = ccolor[term];
- if (textureUnit->_CurrentCombine->OperandRGB[j] == GL_ONE_MINUS_SRC_COLOR) {
+ switch (operandRGB) {
+ case GL_ONE_MINUS_SRC_COLOR:
for (i = 0; i < n; i++) {
- dst[i][RCOMP] = CHAN_MAX - src[i][RCOMP];
- dst[i][GCOMP] = CHAN_MAX - src[i][GCOMP];
- dst[i][BCOMP] = CHAN_MAX - src[i][BCOMP];
+ dst[i][RCOMP] = 1.0F - src[i][RCOMP];
+ dst[i][GCOMP] = 1.0F - src[i][GCOMP];
+ dst[i][BCOMP] = 1.0F - src[i][BCOMP];
}
- }
- else if (textureUnit->_CurrentCombine->OperandRGB[j] == GL_SRC_ALPHA) {
+ break;
+ case GL_SRC_ALPHA:
for (i = 0; i < n; i++) {
- dst[i][RCOMP] = src[i][ACOMP];
- dst[i][GCOMP] = src[i][ACOMP];
+ dst[i][RCOMP] =
+ dst[i][GCOMP] =
dst[i][BCOMP] = src[i][ACOMP];
}
- }
- else {
- ASSERT(textureUnit->_CurrentCombine->OperandRGB[j] ==GL_ONE_MINUS_SRC_ALPHA);
+ break;
+ case GL_ONE_MINUS_SRC_ALPHA:
for (i = 0; i < n; i++) {
- dst[i][RCOMP] = CHAN_MAX - src[i][ACOMP];
- dst[i][GCOMP] = CHAN_MAX - src[i][ACOMP];
- dst[i][BCOMP] = CHAN_MAX - src[i][ACOMP];
+ dst[i][RCOMP] =
+ dst[i][GCOMP] =
+ dst[i][BCOMP] = 1.0F - src[i][ACOMP];
}
+ break;
+ default:
+ _mesa_problem(ctx, "Bad operandRGB");
}
}
}
/*
- * Set up the argA[i] pointers
+ * Set up the argA[term] pointers
*/
- for (j = 0; j < numAlphaArgs; j++) {
- const GLenum srcA = textureUnit->_CurrentCombine->SourceA[j];
+ for (term = 0; term < numArgsA; term++) {
+ const GLenum srcA = combine->SourceA[term];
+ const GLenum operandA = combine->OperandA[term];
switch (srcA) {
case GL_TEXTURE:
- argA[j] = (const GLchan (*)[4])
- (texelBuffer + unit * (n * 4 * sizeof(GLchan)));
+ argA[term] = get_texel_array(swrast, unit);
break;
case GL_PRIMARY_COLOR:
- argA[j] = primary_rgba;
+ argA[term] = primary_rgba;
break;
case GL_PREVIOUS:
- argA[j] = (const GLchan (*)[4]) rgba;
+ argA[term] = rgba;
break;
case GL_CONSTANT:
{
- GLchan alpha, (*c)[4] = ccolor[j];
- UNCLAMPED_FLOAT_TO_CHAN(alpha, textureUnit->EnvColor[3]);
+ float4_array c = ccolor[term];
+ GLfloat alpha = textureUnit->EnvColor[3];
for (i = 0; i < n; i++)
c[i][ACOMP] = alpha;
- argA[j] = (const GLchan (*)[4]) ccolor[j];
+ argA[term] = ccolor[term];
}
break;
/* GL_ATI_texture_env_combine3 allows GL_ZERO & GL_ONE as sources.
*/
case GL_ZERO:
- argA[j] = & zero;
+ {
+ float4_array c = ccolor[term];
+ for (i = 0; i < n; i++)
+ c[i][ACOMP] = 0.0F;
+ argA[term] = ccolor[term];
+ }
break;
case GL_ONE:
- argA[j] = & one;
+ {
+ float4_array c = ccolor[term];
+ for (i = 0; i < n; i++)
+ c[i][ACOMP] = 1.0F;
+ argA[term] = ccolor[term];
+ }
break;
default:
/* ARB_texture_env_crossbar source */
@@ -226,598 +256,258 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
ASSERT(srcUnit < ctx->Const.MaxTextureUnits);
if (!ctx->Texture.Unit[srcUnit]._ReallyEnabled)
return;
- argA[j] = (const GLchan (*)[4])
- (texelBuffer + srcUnit * (n * 4 * sizeof(GLchan)));
+ argA[term] = get_texel_array(swrast, srcUnit);
}
}
- if (textureUnit->_CurrentCombine->OperandA[j] == GL_ONE_MINUS_SRC_ALPHA) {
- const GLchan (*src)[4] = argA[j];
- GLchan (*dst)[4] = ccolor[j];
- argA[j] = (const GLchan (*)[4]) ccolor[j];
+ if (operandA == GL_ONE_MINUS_SRC_ALPHA) {
+ float4_array src = argA[term];
+ float4_array dst = ccolor[term];
+ argA[term] = ccolor[term];
for (i = 0; i < n; i++) {
- dst[i][ACOMP] = CHAN_MAX - src[i][ACOMP];
+ dst[i][ACOMP] = 1.0F - src[i][ACOMP];
}
}
}
- /*
- * Do the texture combine.
- */
- switch (textureUnit->_CurrentCombine->ModeRGB) {
+ /* RGB channel combine */
+ {
+ float4_array arg0 = argRGB[0];
+ float4_array arg1 = argRGB[1];
+ float4_array arg2 = argRGB[2];
+ float4_array arg3 = argRGB[3];
+
+ switch (combine->ModeRGB) {
case GL_REPLACE:
- {
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
- if (RGBshift) {
- for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- rgba[i][RCOMP] = arg0[i][RCOMP] * RGBmult;
- rgba[i][GCOMP] = arg0[i][GCOMP] * RGBmult;
- rgba[i][BCOMP] = arg0[i][BCOMP] * RGBmult;
-#else
- GLuint r = (GLuint) arg0[i][RCOMP] << RGBshift;
- GLuint g = (GLuint) arg0[i][GCOMP] << RGBshift;
- GLuint b = (GLuint) arg0[i][BCOMP] << RGBshift;
- rgba[i][RCOMP] = MIN2(r, CHAN_MAX);
- rgba[i][GCOMP] = MIN2(g, CHAN_MAX);
- rgba[i][BCOMP] = MIN2(b, CHAN_MAX);
-#endif
- }
- }
- else {
- for (i = 0; i < n; i++) {
- rgba[i][RCOMP] = arg0[i][RCOMP];
- rgba[i][GCOMP] = arg0[i][GCOMP];
- rgba[i][BCOMP] = arg0[i][BCOMP];
- }
- }
+ for (i = 0; i < n; i++) {
+ 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:
- {
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
-#if CHAN_TYPE != GL_FLOAT
- const GLint shift = CHAN_BITS - RGBshift;
-#endif
- for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- 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;
-#else
- GLuint r = PROD(arg0[i][RCOMP], arg1[i][RCOMP]) >> shift;
- GLuint g = PROD(arg0[i][GCOMP], arg1[i][GCOMP]) >> shift;
- GLuint b = PROD(arg0[i][BCOMP], arg1[i][BCOMP]) >> shift;
- rgba[i][RCOMP] = (GLchan) MIN2(r, CHAN_MAX);
- rgba[i][GCOMP] = (GLchan) MIN2(g, CHAN_MAX);
- rgba[i][BCOMP] = (GLchan) MIN2(b, CHAN_MAX);
-#endif
- }
+ for (i = 0; i < n; i++) {
+ 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:
if (textureUnit->EnvMode == GL_COMBINE4_NV) {
/* (a * b) + (c * d) */
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
- const GLchan (*arg2)[4] = (const GLchan (*)[4]) argRGB[2];
- const GLchan (*arg3)[4] = (const GLchan (*)[4]) argRGB[3];
for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
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;
-#else
- const GLint shift = CHAN_BITS - RGBshift;
- GLint r = (PROD(arg0[i][RCOMP], arg1[i][RCOMP]) >> shift) +
- (PROD(arg2[i][RCOMP], arg3[i][RCOMP]) >> shift);
- GLint g = (PROD(arg0[i][GCOMP], arg1[i][GCOMP]) >> shift) +
- (PROD(arg2[i][GCOMP], arg3[i][GCOMP]) >> shift);
- GLint b = (PROD(arg0[i][BCOMP], arg1[i][BCOMP]) >> shift) +
- (PROD(arg2[i][BCOMP], arg3[i][BCOMP]) >> shift);
- rgba[i][RCOMP] = (GLchan) MIN2(r, CHAN_MAX);
- rgba[i][GCOMP] = (GLchan) MIN2(g, CHAN_MAX);
- rgba[i][BCOMP] = (GLchan) MIN2(b, CHAN_MAX);
-#endif
+ arg2[i][BCOMP] * arg3[i][BCOMP]) * scaleRGB;
}
}
else {
/* 2-term addition */
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- 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;
-#else
- GLint r = ((GLint) arg0[i][RCOMP] + (GLint) arg1[i][RCOMP]) << RGBshift;
- GLint g = ((GLint) arg0[i][GCOMP] + (GLint) arg1[i][GCOMP]) << RGBshift;
- GLint b = ((GLint) arg0[i][BCOMP] + (GLint) arg1[i][BCOMP]) << RGBshift;
- rgba[i][RCOMP] = (GLchan) MIN2(r, CHAN_MAX);
- rgba[i][GCOMP] = (GLchan) MIN2(g, CHAN_MAX);
- rgba[i][BCOMP] = (GLchan) MIN2(b, CHAN_MAX);
-#endif
+ 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_SIGNED:
if (textureUnit->EnvMode == GL_COMBINE4_NV) {
/* (a * b) + (c * d) - 0.5 */
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
- const GLchan (*arg2)[4] = (const GLchan (*)[4]) argRGB[2];
- const GLchan (*arg3)[4] = (const GLchan (*)[4]) argRGB[3];
for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- rgba[i][RCOMP] = (arg0[i][RCOMP] + arg1[i][RCOMP] *
- arg2[i][RCOMP] + arg3[i][RCOMP] - 0.5) * RGBmult;
- rgba[i][GCOMP] = (arg0[i][GCOMP] + arg1[i][GCOMP] *
- arg2[i][GCOMP] + arg3[i][GCOMP] - 0.5) * RGBmult;
- rgba[i][BCOMP] = (arg0[i][BCOMP] + arg1[i][BCOMP] *
- arg2[i][BCOMP] + arg3[i][BCOMP] - 0.5) * RGBmult;
-#else
- GLint r = (((PROD(arg0[i][RCOMP], arg1[i][RCOMP]) +
- PROD(arg2[i][RCOMP], arg3[i][RCOMP])) >> CHAN_BITS) - half)
- << RGBshift;
- GLint g = (((PROD(arg0[i][GCOMP], arg1[i][GCOMP]) +
- PROD(arg2[i][GCOMP], arg3[i][GCOMP])) >> CHAN_BITS) - half)
- << RGBshift;
- GLint b = (((PROD(arg0[i][BCOMP], arg1[i][BCOMP]) +
- PROD(arg2[i][BCOMP], arg3[i][BCOMP])) >> CHAN_BITS) - half)
- << RGBshift;
- rgba[i][RCOMP] = (GLchan) CLAMP(r, 0, CHAN_MAX);
- rgba[i][GCOMP] = (GLchan) CLAMP(g, 0, CHAN_MAX);
- rgba[i][BCOMP] = (GLchan) CLAMP(b, 0, CHAN_MAX);
-#endif
+ rgba[i][RCOMP] = (arg0[i][RCOMP] * arg1[i][RCOMP] +
+ 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) * scaleRGB;
+ rgba[i][BCOMP] = (arg0[i][BCOMP] * arg1[i][BCOMP] +
+ arg2[i][BCOMP] * arg3[i][BCOMP] - 0.5) * scaleRGB;
}
}
else {
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- 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;
-#else
- GLint r = (GLint) arg0[i][RCOMP] + (GLint) arg1[i][RCOMP] - half;
- GLint g = (GLint) arg0[i][GCOMP] + (GLint) arg1[i][GCOMP] - half;
- GLint b = (GLint) arg0[i][BCOMP] + (GLint) arg1[i][BCOMP] - half;
- r = (r < 0) ? 0 : r << RGBshift;
- g = (g < 0) ? 0 : g << RGBshift;
- b = (b < 0) ? 0 : b << RGBshift;
- rgba[i][RCOMP] = (GLchan) MIN2(r, CHAN_MAX);
- rgba[i][GCOMP] = (GLchan) MIN2(g, CHAN_MAX);
- rgba[i][BCOMP] = (GLchan) MIN2(b, CHAN_MAX);
-#endif
+ 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:
- {
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
- const GLchan (*arg2)[4] = (const GLchan (*)[4]) argRGB[2];
-#if CHAN_TYPE != GL_FLOAT
- const GLint shift = CHAN_BITS - RGBshift;
-#endif
- for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- rgba[i][RCOMP] = (arg0[i][RCOMP] * arg2[i][RCOMP] +
- arg1[i][RCOMP] * (CHAN_MAXF - arg2[i][RCOMP])) * RGBmult;
- rgba[i][GCOMP] = (arg0[i][GCOMP] * arg2[i][GCOMP] +
- arg1[i][GCOMP] * (CHAN_MAXF - arg2[i][GCOMP])) * RGBmult;
- rgba[i][BCOMP] = (arg0[i][BCOMP] * arg2[i][BCOMP] +
- arg1[i][BCOMP] * (CHAN_MAXF - arg2[i][BCOMP])) * RGBmult;
-#else
- GLuint r = (PROD(arg0[i][RCOMP], arg2[i][RCOMP])
- + PROD(arg1[i][RCOMP], CHAN_MAX - arg2[i][RCOMP]))
- >> shift;
- GLuint g = (PROD(arg0[i][GCOMP], arg2[i][GCOMP])
- + PROD(arg1[i][GCOMP], CHAN_MAX - arg2[i][GCOMP]))
- >> shift;
- GLuint b = (PROD(arg0[i][BCOMP], arg2[i][BCOMP])
- + PROD(arg1[i][BCOMP], CHAN_MAX - arg2[i][BCOMP]))
- >> shift;
- rgba[i][RCOMP] = (GLchan) MIN2(r, CHAN_MAX);
- rgba[i][GCOMP] = (GLchan) MIN2(g, CHAN_MAX);
- rgba[i][BCOMP] = (GLchan) MIN2(b, CHAN_MAX);
-#endif
- }
+ for (i = 0; i < n; i++) {
+ rgba[i][RCOMP] = (arg0[i][RCOMP] * arg2[i][RCOMP] +
+ 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])) * scaleRGB;
+ rgba[i][BCOMP] = (arg0[i][BCOMP] * arg2[i][BCOMP] +
+ arg1[i][BCOMP] * (1.0F - arg2[i][BCOMP])) * scaleRGB;
}
break;
case GL_SUBTRACT:
- {
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
- for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- 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;
-#else
- GLint r = ((GLint) arg0[i][RCOMP] - (GLint) arg1[i][RCOMP]) << RGBshift;
- GLint g = ((GLint) arg0[i][GCOMP] - (GLint) arg1[i][GCOMP]) << RGBshift;
- GLint b = ((GLint) arg0[i][BCOMP] - (GLint) arg1[i][BCOMP]) << RGBshift;
- rgba[i][RCOMP] = (GLchan) CLAMP(r, 0, CHAN_MAX);
- rgba[i][GCOMP] = (GLchan) CLAMP(g, 0, CHAN_MAX);
- rgba[i][BCOMP] = (GLchan) CLAMP(b, 0, CHAN_MAX);
-#endif
- }
+ for (i = 0; i < n; i++) {
+ 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 */
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
- for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- GLchan 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, CHAN_MAXF);
-#else
- GLint dot = (S_PROD((GLint)arg0[i][RCOMP] - half,
- (GLint)arg1[i][RCOMP] - half) +
- S_PROD((GLint)arg0[i][GCOMP] - half,
- (GLint)arg1[i][GCOMP] - half) +
- S_PROD((GLint)arg0[i][BCOMP] - half,
- (GLint)arg1[i][BCOMP] - half)) >> 6;
- dot = CLAMP(dot, 0, CHAN_MAX);
-#endif
- rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = (GLchan) dot;
- }
+ /* 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))
+ * 4.0F;
+ dot = CLAMP(dot, 0.0F, 1.0F);
+ rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = dot;
}
break;
case GL_DOT3_RGB:
case GL_DOT3_RGBA:
- {
- /* DO scale the result by 1 2 or 4 */
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
- for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- GLchan 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;
- dot = CLAMP(dot, 0.0, CHAN_MAXF);
-#else
- GLint dot = (S_PROD((GLint)arg0[i][RCOMP] - half,
- (GLint)arg1[i][RCOMP] - half) +
- S_PROD((GLint)arg0[i][GCOMP] - half,
- (GLint)arg1[i][GCOMP] - half) +
- S_PROD((GLint)arg0[i][BCOMP] - half,
- (GLint)arg1[i][BCOMP] - half)) >> 6;
- dot <<= RGBshift;
- dot = CLAMP(dot, 0, CHAN_MAX);
-#endif
- rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = (GLchan) dot;
- }
+ /* 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 * scaleRGB;
+ dot = CLAMP(dot, 0.0, 1.0F);
+ rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = dot;
}
break;
case GL_MODULATE_ADD_ATI:
- {
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
- const GLchan (*arg2)[4] = (const GLchan (*)[4]) argRGB[2];
-#if CHAN_TYPE != GL_FLOAT
- const GLint shift = CHAN_BITS - RGBshift;
-#endif
- for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- rgba[i][RCOMP] = ((arg0[i][RCOMP] * arg2[i][RCOMP]) + arg1[i][RCOMP]) * RGBmult;
- rgba[i][GCOMP] = ((arg0[i][GCOMP] * arg2[i][GCOMP]) + arg1[i][GCOMP]) * RGBmult;
- rgba[i][BCOMP] = ((arg0[i][BCOMP] * arg2[i][BCOMP]) + arg1[i][BCOMP]) * RGBmult;
-#else
- GLuint r = (PROD(arg0[i][RCOMP], arg2[i][RCOMP])
- + ((GLuint) arg1[i][RCOMP] << CHAN_BITS)) >> shift;
- GLuint g = (PROD(arg0[i][GCOMP], arg2[i][GCOMP])
- + ((GLuint) arg1[i][GCOMP] << CHAN_BITS)) >> shift;
- GLuint b = (PROD(arg0[i][BCOMP], arg2[i][BCOMP])
- + ((GLuint) arg1[i][BCOMP] << CHAN_BITS)) >> shift;
- rgba[i][RCOMP] = (GLchan) MIN2(r, CHAN_MAX);
- rgba[i][GCOMP] = (GLchan) MIN2(g, CHAN_MAX);
- rgba[i][BCOMP] = (GLchan) MIN2(b, CHAN_MAX);
-#endif
- }
+ for (i = 0; i < n; i++) {
+ rgba[i][RCOMP] = ((arg0[i][RCOMP] * arg2[i][RCOMP]) +
+ arg1[i][RCOMP]) * scaleRGB;
+ rgba[i][GCOMP] = ((arg0[i][GCOMP] * arg2[i][GCOMP]) +
+ arg1[i][GCOMP]) * scaleRGB;
+ rgba[i][BCOMP] = ((arg0[i][BCOMP] * arg2[i][BCOMP]) +
+ arg1[i][BCOMP]) * scaleRGB;
}
break;
case GL_MODULATE_SIGNED_ADD_ATI:
- {
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
- const GLchan (*arg2)[4] = (const GLchan (*)[4]) argRGB[2];
-#if CHAN_TYPE != GL_FLOAT
- const GLint shift = CHAN_BITS - RGBshift;
-#endif
- for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- rgba[i][RCOMP] = ((arg0[i][RCOMP] * arg2[i][RCOMP]) + arg1[i][RCOMP] - 0.5) * RGBmult;
- rgba[i][GCOMP] = ((arg0[i][GCOMP] * arg2[i][GCOMP]) + arg1[i][GCOMP] - 0.5) * RGBmult;
- rgba[i][BCOMP] = ((arg0[i][BCOMP] * arg2[i][BCOMP]) + arg1[i][BCOMP] - 0.5) * RGBmult;
-#else
- GLint r = (S_PROD(arg0[i][RCOMP], arg2[i][RCOMP])
- + (((GLint) arg1[i][RCOMP] - half) << CHAN_BITS))
- >> shift;
- GLint g = (S_PROD(arg0[i][GCOMP], arg2[i][GCOMP])
- + (((GLint) arg1[i][GCOMP] - half) << CHAN_BITS))
- >> shift;
- GLint b = (S_PROD(arg0[i][BCOMP], arg2[i][BCOMP])
- + (((GLint) arg1[i][BCOMP] - half) << CHAN_BITS))
- >> shift;
- rgba[i][RCOMP] = (GLchan) CLAMP(r, 0, CHAN_MAX);
- rgba[i][GCOMP] = (GLchan) CLAMP(g, 0, CHAN_MAX);
- rgba[i][BCOMP] = (GLchan) CLAMP(b, 0, CHAN_MAX);
-#endif
- }
+ for (i = 0; i < n; i++) {
+ rgba[i][RCOMP] = ((arg0[i][RCOMP] * arg2[i][RCOMP]) +
+ arg1[i][RCOMP] - 0.5) * scaleRGB;
+ rgba[i][GCOMP] = ((arg0[i][GCOMP] * arg2[i][GCOMP]) +
+ arg1[i][GCOMP] - 0.5) * scaleRGB;
+ rgba[i][BCOMP] = ((arg0[i][BCOMP] * arg2[i][BCOMP]) +
+ arg1[i][BCOMP] - 0.5) * scaleRGB;
}
break;
case GL_MODULATE_SUBTRACT_ATI:
- {
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
- const GLchan (*arg2)[4] = (const GLchan (*)[4]) argRGB[2];
-#if CHAN_TYPE != GL_FLOAT
- const GLint shift = CHAN_BITS - RGBshift;
-#endif
- for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- rgba[i][RCOMP] = ((arg0[i][RCOMP] * arg2[i][RCOMP]) - arg1[i][RCOMP]) * RGBmult;
- rgba[i][GCOMP] = ((arg0[i][GCOMP] * arg2[i][GCOMP]) - arg1[i][GCOMP]) * RGBmult;
- rgba[i][BCOMP] = ((arg0[i][BCOMP] * arg2[i][BCOMP]) - arg1[i][BCOMP]) * RGBmult;
-#else
- GLint r = (S_PROD(arg0[i][RCOMP], arg2[i][RCOMP])
- - ((GLint) arg1[i][RCOMP] << CHAN_BITS))
- >> shift;
- GLint g = (S_PROD(arg0[i][GCOMP], arg2[i][GCOMP])
- - ((GLint) arg1[i][GCOMP] << CHAN_BITS))
- >> shift;
- GLint b = (S_PROD(arg0[i][BCOMP], arg2[i][BCOMP])
- - ((GLint) arg1[i][BCOMP] << CHAN_BITS))
- >> shift;
- rgba[i][RCOMP] = (GLchan) CLAMP(r, 0, CHAN_MAX);
- rgba[i][GCOMP] = (GLchan) CLAMP(g, 0, CHAN_MAX);
- rgba[i][BCOMP] = (GLchan) CLAMP(b, 0, CHAN_MAX);
-#endif
- }
+ for (i = 0; i < n; i++) {
+ rgba[i][RCOMP] = ((arg0[i][RCOMP] * arg2[i][RCOMP]) -
+ arg1[i][RCOMP]) * scaleRGB;
+ rgba[i][GCOMP] = ((arg0[i][GCOMP] * arg2[i][GCOMP]) -
+ arg1[i][GCOMP]) * scaleRGB;
+ rgba[i][BCOMP] = ((arg0[i][BCOMP] * arg2[i][BCOMP]) -
+ arg1[i][BCOMP]) * scaleRGB;
}
break;
case GL_BUMP_ENVMAP_ATI:
- {
- /* this produces a fixed rgba color, and the coord calc is done elsewhere */
- for (i = 0; i < n; i++) {
+ /* this produces a fixed rgba color, and the coord calc is done elsewhere */
+ for (i = 0; i < n; i++) {
/* rgba result is 0,0,0,1 */
#if CHAN_TYPE == GL_FLOAT
- rgba[i][RCOMP] = 0.0;
- rgba[i][GCOMP] = 0.0;
- rgba[i][BCOMP] = 0.0;
- rgba[i][ACOMP] = 1.0;
+ rgba[i][RCOMP] = 0.0;
+ rgba[i][GCOMP] = 0.0;
+ rgba[i][BCOMP] = 0.0;
+ rgba[i][ACOMP] = 1.0;
#else
- rgba[i][RCOMP] = 0;
- rgba[i][GCOMP] = 0;
- rgba[i][BCOMP] = 0;
- rgba[i][ACOMP] = CHAN_MAX;
+ rgba[i][RCOMP] = 0;
+ rgba[i][GCOMP] = 0;
+ rgba[i][BCOMP] = 0;
+ rgba[i][ACOMP] = CHAN_MAX;
#endif
- }
}
return; /* no alpha processing */
default:
_mesa_problem(ctx, "invalid combine mode");
+ }
}
- switch (textureUnit->_CurrentCombine->ModeA) {
+ /* Alpha channel combine */
+ {
+ float4_array arg0 = argA[0];
+ float4_array arg1 = argA[1];
+ float4_array arg2 = argA[2];
+ float4_array arg3 = argA[3];
+
+ switch (combine->ModeA) {
case GL_REPLACE:
- {
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
- if (Ashift) {
- for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- GLchan a = arg0[i][ACOMP] * Amult;
-#else
- GLuint a = (GLuint) arg0[i][ACOMP] << Ashift;
-#endif
- rgba[i][ACOMP] = (GLchan) MIN2(a, CHAN_MAX);
- }
- }
- else {
- for (i = 0; i < n; i++) {
- rgba[i][ACOMP] = arg0[i][ACOMP];
- }
- }
+ for (i = 0; i < n; i++) {
+ rgba[i][ACOMP] = arg0[i][ACOMP] * scaleA;
}
break;
case GL_MODULATE:
- {
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
-#if CHAN_TYPE != GL_FLOAT
- const GLint shift = CHAN_BITS - Ashift;
-#endif
- for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- rgba[i][ACOMP] = arg0[i][ACOMP] * arg1[i][ACOMP] * Amult;
-#else
- GLuint a = (PROD(arg0[i][ACOMP], arg1[i][ACOMP]) >> shift);
- rgba[i][ACOMP] = (GLchan) MIN2(a, CHAN_MAX);
-#endif
- }
+ for (i = 0; i < n; i++) {
+ rgba[i][ACOMP] = arg0[i][ACOMP] * arg1[i][ACOMP] * scaleA;
}
break;
case GL_ADD:
if (textureUnit->EnvMode == GL_COMBINE4_NV) {
/* (a * b) + (c * d) */
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
- const GLchan (*arg2)[4] = (const GLchan (*)[4]) argA[2];
- const GLchan (*arg3)[4] = (const GLchan (*)[4]) argA[3];
for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
rgba[i][ACOMP] = (arg0[i][ACOMP] * arg1[i][ACOMP] +
- arg2[i][ACOMP] * arg3[i][ACOMP]) * Amult;
-#else
- const GLint shift = CHAN_BITS - Ashift;
- GLint a = (PROD(arg0[i][ACOMP], arg1[i][ACOMP]) >> shift) +
- (PROD(arg2[i][ACOMP], arg3[i][ACOMP]) >> shift);
- rgba[i][ACOMP] = (GLchan) MIN2(a, CHAN_MAX);
-#endif
+ arg2[i][ACOMP] * arg3[i][ACOMP]) * scaleA;
}
}
else {
/* two-term add */
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- rgba[i][ACOMP] = (arg0[i][ACOMP] + arg1[i][ACOMP]) * Amult;
-#else
- GLint a = ((GLint) arg0[i][ACOMP] + arg1[i][ACOMP]) << Ashift;
- rgba[i][ACOMP] = (GLchan) MIN2(a, CHAN_MAX);
-#endif
+ rgba[i][ACOMP] = (arg0[i][ACOMP] + arg1[i][ACOMP]) * scaleA;
}
}
break;
case GL_ADD_SIGNED:
if (textureUnit->EnvMode == GL_COMBINE4_NV) {
/* (a * b) + (c * d) - 0.5 */
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
- const GLchan (*arg2)[4] = (const GLchan (*)[4]) argA[2];
- const GLchan (*arg3)[4] = (const GLchan (*)[4]) argA[3];
for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
rgba[i][ACOMP] = (arg0[i][ACOMP] * arg1[i][ACOMP] +
arg2[i][ACOMP] * arg3[i][ACOMP] -
- 0.5) * Amult;
-#else
- GLint a = (((PROD(arg0[i][ACOMP], arg1[i][ACOMP]) +
- PROD(arg2[i][ACOMP], arg3[i][ACOMP])) >> CHAN_BITS) - half)
- << Ashift;
- rgba[i][ACOMP] = (GLchan) CLAMP(a, 0, CHAN_MAX);
-#endif
+ 0.5) * scaleA;
}
}
else {
/* a + b - 0.5 */
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- rgba[i][ACOMP] = (arg0[i][ACOMP] + arg1[i][ACOMP] - 0.5F) * Amult;
-#else
- GLint a = (GLint) arg0[i][ACOMP] + (GLint) arg1[i][ACOMP] -half;
- a = (a < 0) ? 0 : a << Ashift;
- rgba[i][ACOMP] = (GLchan) CLAMP(a, 0, CHAN_MAX);
-#endif
+ rgba[i][ACOMP] = (arg0[i][ACOMP] + arg1[i][ACOMP] - 0.5F) * scaleA;
}
}
break;
case GL_INTERPOLATE:
- {
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
- const GLchan (*arg2)[4] = (const GLchan (*)[4]) argA[2];
-#if CHAN_TYPE != GL_FLOAT
- const GLint shift = CHAN_BITS - Ashift;
-#endif
- for (i=0; i<n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- rgba[i][ACOMP] = (arg0[i][ACOMP] * arg2[i][ACOMP] +
- arg1[i][ACOMP] * (CHAN_MAXF - arg2[i][ACOMP]))
- * Amult;
-#else
- GLuint a = (PROD(arg0[i][ACOMP], arg2[i][ACOMP])
- + PROD(arg1[i][ACOMP], CHAN_MAX - arg2[i][ACOMP]))
- >> shift;
- rgba[i][ACOMP] = (GLchan) MIN2(a, CHAN_MAX);
-#endif
- }
+ for (i = 0; i < n; i++) {
+ rgba[i][ACOMP] = (arg0[i][ACOMP] * arg2[i][ACOMP] +
+ arg1[i][ACOMP] * (1.0F - arg2[i][ACOMP]))
+ * scaleA;
}
break;
case GL_SUBTRACT:
- {
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
- for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- rgba[i][ACOMP] = (arg0[i][ACOMP] - arg1[i][ACOMP]) * Amult;
-#else
- GLint a = ((GLint) arg0[i][ACOMP] - (GLint) arg1[i][ACOMP]) << Ashift;
- rgba[i][ACOMP] = (GLchan) CLAMP(a, 0, CHAN_MAX);
-#endif
- }
+ for (i = 0; i < n; i++) {
+ rgba[i][ACOMP] = (arg0[i][ACOMP] - arg1[i][ACOMP]) * scaleA;
}
break;
case GL_MODULATE_ADD_ATI:
- {
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
- const GLchan (*arg2)[4] = (const GLchan (*)[4]) argA[2];
-#if CHAN_TYPE != GL_FLOAT
- const GLint shift = CHAN_BITS - Ashift;
-#endif
- for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- rgba[i][ACOMP] = ((arg0[i][ACOMP] * arg2[i][ACOMP]) + arg1[i][ACOMP]) * Amult;
-#else
- GLint a = (PROD(arg0[i][ACOMP], arg2[i][ACOMP])
- + ((GLuint) arg1[i][ACOMP] << CHAN_BITS))
- >> shift;
- rgba[i][ACOMP] = (GLchan) CLAMP(a, 0, CHAN_MAX);
-#endif
- }
+ for (i = 0; i < n; i++) {
+ rgba[i][ACOMP] = ((arg0[i][ACOMP] * arg2[i][ACOMP])
+ + arg1[i][ACOMP]) * scaleA;
}
break;
case GL_MODULATE_SIGNED_ADD_ATI:
- {
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
- const GLchan (*arg2)[4] = (const GLchan (*)[4]) argA[2];
-#if CHAN_TYPE != GL_FLOAT
- const GLint shift = CHAN_BITS - Ashift;
-#endif
- for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- rgba[i][ACOMP] = ((arg0[i][ACOMP] * arg2[i][ACOMP]) + arg1[i][ACOMP] - 0.5F) * Amult;
-#else
- GLint a = (S_PROD(arg0[i][ACOMP], arg2[i][ACOMP])
- + (((GLint) arg1[i][ACOMP] - half) << CHAN_BITS))
- >> shift;
- rgba[i][ACOMP] = (GLchan) CLAMP(a, 0, CHAN_MAX);
-#endif
- }
+ for (i = 0; i < n; i++) {
+ rgba[i][ACOMP] = ((arg0[i][ACOMP] * arg2[i][ACOMP]) +
+ arg1[i][ACOMP] - 0.5F) * scaleA;
}
break;
case GL_MODULATE_SUBTRACT_ATI:
- {
- const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
- const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
- const GLchan (*arg2)[4] = (const GLchan (*)[4]) argA[2];
-#if CHAN_TYPE != GL_FLOAT
- const GLint shift = CHAN_BITS - Ashift;
-#endif
- for (i = 0; i < n; i++) {
-#if CHAN_TYPE == GL_FLOAT
- rgba[i][ACOMP] = ((arg0[i][ACOMP] * arg2[i][ACOMP]) - arg1[i][ACOMP]) * Amult;
-#else
- GLint a = (S_PROD(arg0[i][ACOMP], arg2[i][ACOMP])
- - ((GLint) arg1[i][ACOMP] << CHAN_BITS))
- >> shift;
- rgba[i][ACOMP] = (GLchan) CLAMP(a, 0, CHAN_MAX);
-#endif
- }
+ for (i = 0; i < n; i++) {
+ rgba[i][ACOMP] = ((arg0[i][ACOMP] * arg2[i][ACOMP])
+ - arg1[i][ACOMP]) * scaleA;
}
break;
default:
_mesa_problem(ctx, "invalid combine mode");
+ }
}
/* Fix the alpha component for GL_DOT3_RGBA_EXT/ARB combining.
@@ -825,14 +515,20 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
* were written such that the GL_COMBINE_ALPHA value could be set to
* GL_DOT3.
*/
- if (textureUnit->_CurrentCombine->ModeRGB == GL_DOT3_RGBA_EXT ||
- textureUnit->_CurrentCombine->ModeRGB == GL_DOT3_RGBA) {
+ if (combine->ModeRGB == GL_DOT3_RGBA_EXT ||
+ combine->ModeRGB == GL_DOT3_RGBA) {
for (i = 0; i < n; i++) {
rgba[i][ACOMP] = rgba[i][RCOMP];
}
}
+
+ for (i = 0; i < n; i++) {
+ UNCLAMPED_FLOAT_TO_CHAN(rgbaChan[i][RCOMP], rgba[i][RCOMP]);
+ UNCLAMPED_FLOAT_TO_CHAN(rgbaChan[i][GCOMP], rgba[i][GCOMP]);
+ UNCLAMPED_FLOAT_TO_CHAN(rgbaChan[i][BCOMP], rgba[i][BCOMP]);
+ UNCLAMPED_FLOAT_TO_CHAN(rgbaChan[i][ACOMP], rgba[i][ACOMP]);
+ }
}
-#undef PROD
/**
@@ -840,17 +536,17 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
* See GL_EXT_texture_swizzle.
*/
static void
-swizzle_texels(GLuint swizzle, GLuint count, GLchan (*texels)[4])
+swizzle_texels(GLuint swizzle, GLuint count, float4_array texels)
{
const GLuint swzR = GET_SWZ(swizzle, 0);
const GLuint swzG = GET_SWZ(swizzle, 1);
const GLuint swzB = GET_SWZ(swizzle, 2);
const GLuint swzA = GET_SWZ(swizzle, 3);
- GLchan vector[6];
+ GLfloat vector[6];
GLuint i;
vector[SWIZZLE_ZERO] = 0;
- vector[SWIZZLE_ONE] = CHAN_MAX;
+ vector[SWIZZLE_ONE] = 1.0F;
for (i = 0; i < count; i++) {
vector[SWIZZLE_X] = texels[i][0];
@@ -866,394 +562,45 @@ swizzle_texels(GLuint swizzle, GLuint count, GLchan (*texels)[4])
/**
- * Apply a conventional OpenGL texture env mode (REPLACE, ADD, BLEND,
- * MODULATE, or DECAL) to an array of fragments.
- * Input: textureUnit - pointer to texture unit to apply
- * format - base internal texture format
- * n - number of fragments
- * primary_rgba - primary colors (may alias rgba for single texture)
- * texels - array of texel colors
- * InOut: rgba - incoming fragment colors modified by texel colors
- * according to the texture environment mode.
- */
-static void
-texture_apply( const GLcontext *ctx,
- const struct gl_texture_unit *texUnit,
- GLuint n,
- CONST GLchan primary_rgba[][4], CONST GLchan texel[][4],
- GLchan rgba[][4] )
-{
- GLint baseLevel;
- GLuint i;
- GLchan Rc, Gc, Bc, Ac;
- GLenum format;
- (void) primary_rgba;
-
- ASSERT(texUnit);
- ASSERT(texUnit->_Current);
-
- baseLevel = texUnit->_Current->BaseLevel;
- ASSERT(texUnit->_Current->Image[0][baseLevel]);
-
- format = texUnit->_Current->Image[0][baseLevel]->_BaseFormat;
-
- if (format == GL_COLOR_INDEX || format == GL_YCBCR_MESA) {
- format = GL_RGBA; /* a bit of a hack */
- }
- else if (format == GL_DEPTH_COMPONENT || format == GL_DEPTH_STENCIL_EXT) {
- format = texUnit->_Current->DepthMode;
- }
-
- switch (texUnit->EnvMode) {
- case GL_REPLACE:
- switch (format) {
- case GL_ALPHA:
- for (i=0;i<n;i++) {
- /* Cv = Cf */
- /* Av = At */
- rgba[i][ACOMP] = texel[i][ACOMP];
- }
- break;
- case GL_LUMINANCE:
- for (i=0;i<n;i++) {
- /* Cv = Lt */
- GLchan Lt = texel[i][RCOMP];
- rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = Lt;
- /* Av = Af */
- }
- break;
- case GL_LUMINANCE_ALPHA:
- for (i=0;i<n;i++) {
- GLchan Lt = texel[i][RCOMP];
- /* Cv = Lt */
- rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = Lt;
- /* Av = At */
- rgba[i][ACOMP] = texel[i][ACOMP];
- }
- break;
- case GL_INTENSITY:
- for (i=0;i<n;i++) {
- /* Cv = It */
- GLchan It = texel[i][RCOMP];
- rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = It;
- /* Av = It */
- rgba[i][ACOMP] = It;
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- /* Cv = Ct */
- rgba[i][RCOMP] = texel[i][RCOMP];
- rgba[i][GCOMP] = texel[i][GCOMP];
- rgba[i][BCOMP] = texel[i][BCOMP];
- /* Av = Af */
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- /* Cv = Ct */
- rgba[i][RCOMP] = texel[i][RCOMP];
- rgba[i][GCOMP] = texel[i][GCOMP];
- rgba[i][BCOMP] = texel[i][BCOMP];
- /* Av = At */
- rgba[i][ACOMP] = texel[i][ACOMP];
- }
- break;
- default:
- _mesa_problem(ctx, "Bad format (GL_REPLACE) in texture_apply");
- return;
- }
- break;
-
- case GL_MODULATE:
- switch (format) {
- case GL_ALPHA:
- for (i=0;i<n;i++) {
- /* Cv = Cf */
- /* Av = AfAt */
- rgba[i][ACOMP] = CHAN_PRODUCT( rgba[i][ACOMP], texel[i][ACOMP] );
- }
- break;
- case GL_LUMINANCE:
- for (i=0;i<n;i++) {
- /* Cv = LtCf */
- GLchan Lt = texel[i][RCOMP];
- rgba[i][RCOMP] = CHAN_PRODUCT( rgba[i][RCOMP], Lt );
- rgba[i][GCOMP] = CHAN_PRODUCT( rgba[i][GCOMP], Lt );
- rgba[i][BCOMP] = CHAN_PRODUCT( rgba[i][BCOMP], Lt );
- /* Av = Af */
- }
- break;
- case GL_LUMINANCE_ALPHA:
- for (i=0;i<n;i++) {
- /* Cv = CfLt */
- GLchan Lt = texel[i][RCOMP];
- rgba[i][RCOMP] = CHAN_PRODUCT( rgba[i][RCOMP], Lt );
- rgba[i][GCOMP] = CHAN_PRODUCT( rgba[i][GCOMP], Lt );
- rgba[i][BCOMP] = CHAN_PRODUCT( rgba[i][BCOMP], Lt );
- /* Av = AfAt */
- rgba[i][ACOMP] = CHAN_PRODUCT( rgba[i][ACOMP], texel[i][ACOMP] );
- }
- break;
- case GL_INTENSITY:
- for (i=0;i<n;i++) {
- /* Cv = CfIt */
- GLchan It = texel[i][RCOMP];
- rgba[i][RCOMP] = CHAN_PRODUCT( rgba[i][RCOMP], It );
- rgba[i][GCOMP] = CHAN_PRODUCT( rgba[i][GCOMP], It );
- rgba[i][BCOMP] = CHAN_PRODUCT( rgba[i][BCOMP], It );
- /* Av = AfIt */
- rgba[i][ACOMP] = CHAN_PRODUCT( rgba[i][ACOMP], It );
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- /* Cv = CfCt */
- rgba[i][RCOMP] = CHAN_PRODUCT( rgba[i][RCOMP], texel[i][RCOMP] );
- rgba[i][GCOMP] = CHAN_PRODUCT( rgba[i][GCOMP], texel[i][GCOMP] );
- rgba[i][BCOMP] = CHAN_PRODUCT( rgba[i][BCOMP], texel[i][BCOMP] );
- /* Av = Af */
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- /* Cv = CfCt */
- rgba[i][RCOMP] = CHAN_PRODUCT( rgba[i][RCOMP], texel[i][RCOMP] );
- rgba[i][GCOMP] = CHAN_PRODUCT( rgba[i][GCOMP], texel[i][GCOMP] );
- rgba[i][BCOMP] = CHAN_PRODUCT( rgba[i][BCOMP], texel[i][BCOMP] );
- /* Av = AfAt */
- rgba[i][ACOMP] = CHAN_PRODUCT( rgba[i][ACOMP], texel[i][ACOMP] );
- }
- break;
- default:
- _mesa_problem(ctx, "Bad format (GL_MODULATE) in texture_apply");
- return;
- }
- break;
-
- case GL_DECAL:
- switch (format) {
- case GL_ALPHA:
- case GL_LUMINANCE:
- case GL_LUMINANCE_ALPHA:
- case GL_INTENSITY:
- /* undefined */
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- /* Cv = Ct */
- rgba[i][RCOMP] = texel[i][RCOMP];
- rgba[i][GCOMP] = texel[i][GCOMP];
- rgba[i][BCOMP] = texel[i][BCOMP];
- /* Av = Af */
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- /* Cv = Cf(1-At) + CtAt */
- GLchan t = texel[i][ACOMP], s = CHAN_MAX - t;
- rgba[i][RCOMP] = CHAN_PRODUCT(rgba[i][RCOMP], s) + CHAN_PRODUCT(texel[i][RCOMP],t);
- rgba[i][GCOMP] = CHAN_PRODUCT(rgba[i][GCOMP], s) + CHAN_PRODUCT(texel[i][GCOMP],t);
- rgba[i][BCOMP] = CHAN_PRODUCT(rgba[i][BCOMP], s) + CHAN_PRODUCT(texel[i][BCOMP],t);
- /* Av = Af */
- }
- break;
- default:
- _mesa_problem(ctx, "Bad format (GL_DECAL) in texture_apply");
- return;
- }
- break;
-
- case GL_BLEND:
- UNCLAMPED_FLOAT_TO_CHAN(Rc, texUnit->EnvColor[0]);
- UNCLAMPED_FLOAT_TO_CHAN(Gc, texUnit->EnvColor[1]);
- UNCLAMPED_FLOAT_TO_CHAN(Bc, texUnit->EnvColor[2]);
- UNCLAMPED_FLOAT_TO_CHAN(Ac, texUnit->EnvColor[3]);
- switch (format) {
- case GL_ALPHA:
- for (i=0;i<n;i++) {
- /* Cv = Cf */
- /* Av = AfAt */
- rgba[i][ACOMP] = CHAN_PRODUCT(rgba[i][ACOMP], texel[i][ACOMP]);
- }
- break;
- case GL_LUMINANCE:
- for (i=0;i<n;i++) {
- /* Cv = Cf(1-Lt) + CcLt */
- GLchan Lt = texel[i][RCOMP], s = CHAN_MAX - Lt;
- rgba[i][RCOMP] = CHAN_PRODUCT(rgba[i][RCOMP], s) + CHAN_PRODUCT(Rc, Lt);
- rgba[i][GCOMP] = CHAN_PRODUCT(rgba[i][GCOMP], s) + CHAN_PRODUCT(Gc, Lt);
- rgba[i][BCOMP] = CHAN_PRODUCT(rgba[i][BCOMP], s) + CHAN_PRODUCT(Bc, Lt);
- /* Av = Af */
- }
- break;
- case GL_LUMINANCE_ALPHA:
- for (i=0;i<n;i++) {
- /* Cv = Cf(1-Lt) + CcLt */
- GLchan Lt = texel[i][RCOMP], s = CHAN_MAX - Lt;
- rgba[i][RCOMP] = CHAN_PRODUCT(rgba[i][RCOMP], s) + CHAN_PRODUCT(Rc, Lt);
- rgba[i][GCOMP] = CHAN_PRODUCT(rgba[i][GCOMP], s) + CHAN_PRODUCT(Gc, Lt);
- rgba[i][BCOMP] = CHAN_PRODUCT(rgba[i][BCOMP], s) + CHAN_PRODUCT(Bc, Lt);
- /* Av = AfAt */
- rgba[i][ACOMP] = CHAN_PRODUCT(rgba[i][ACOMP],texel[i][ACOMP]);
- }
- break;
- case GL_INTENSITY:
- for (i=0;i<n;i++) {
- /* Cv = Cf(1-It) + CcIt */
- GLchan It = texel[i][RCOMP], s = CHAN_MAX - It;
- rgba[i][RCOMP] = CHAN_PRODUCT(rgba[i][RCOMP], s) + CHAN_PRODUCT(Rc, It);
- rgba[i][GCOMP] = CHAN_PRODUCT(rgba[i][GCOMP], s) + CHAN_PRODUCT(Gc, It);
- rgba[i][BCOMP] = CHAN_PRODUCT(rgba[i][BCOMP], s) + CHAN_PRODUCT(Bc, It);
- /* Av = Af(1-It) + Ac*It */
- rgba[i][ACOMP] = CHAN_PRODUCT(rgba[i][ACOMP], s) + CHAN_PRODUCT(Ac, It);
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- /* Cv = Cf(1-Ct) + CcCt */
- rgba[i][RCOMP] = CHAN_PRODUCT(rgba[i][RCOMP], (CHAN_MAX-texel[i][RCOMP])) + CHAN_PRODUCT(Rc,texel[i][RCOMP]);
- rgba[i][GCOMP] = CHAN_PRODUCT(rgba[i][GCOMP], (CHAN_MAX-texel[i][GCOMP])) + CHAN_PRODUCT(Gc,texel[i][GCOMP]);
- rgba[i][BCOMP] = CHAN_PRODUCT(rgba[i][BCOMP], (CHAN_MAX-texel[i][BCOMP])) + CHAN_PRODUCT(Bc,texel[i][BCOMP]);
- /* Av = Af */
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- /* Cv = Cf(1-Ct) + CcCt */
- rgba[i][RCOMP] = CHAN_PRODUCT(rgba[i][RCOMP], (CHAN_MAX-texel[i][RCOMP])) + CHAN_PRODUCT(Rc,texel[i][RCOMP]);
- rgba[i][GCOMP] = CHAN_PRODUCT(rgba[i][GCOMP], (CHAN_MAX-texel[i][GCOMP])) + CHAN_PRODUCT(Gc,texel[i][GCOMP]);
- rgba[i][BCOMP] = CHAN_PRODUCT(rgba[i][BCOMP], (CHAN_MAX-texel[i][BCOMP])) + CHAN_PRODUCT(Bc,texel[i][BCOMP]);
- /* Av = AfAt */
- rgba[i][ACOMP] = CHAN_PRODUCT(rgba[i][ACOMP],texel[i][ACOMP]);
- }
- break;
- default:
- _mesa_problem(ctx, "Bad format (GL_BLEND) in texture_apply");
- return;
- }
- break;
-
- /* XXX don't clamp results if GLchan is float??? */
-
- case GL_ADD: /* GL_EXT_texture_add_env */
- switch (format) {
- case GL_ALPHA:
- for (i=0;i<n;i++) {
- /* Rv = Rf */
- /* Gv = Gf */
- /* Bv = Bf */
- rgba[i][ACOMP] = CHAN_PRODUCT(rgba[i][ACOMP], texel[i][ACOMP]);
- }
- break;
- case GL_LUMINANCE:
- for (i=0;i<n;i++) {
- ChanTemp Lt = texel[i][RCOMP];
- ChanTemp r = rgba[i][RCOMP] + Lt;
- ChanTemp g = rgba[i][GCOMP] + Lt;
- ChanTemp b = rgba[i][BCOMP] + Lt;
- rgba[i][RCOMP] = MIN2(r, CHAN_MAX);
- rgba[i][GCOMP] = MIN2(g, CHAN_MAX);
- rgba[i][BCOMP] = MIN2(b, CHAN_MAX);
- /* Av = Af */
- }
- break;
- case GL_LUMINANCE_ALPHA:
- for (i=0;i<n;i++) {
- ChanTemp Lt = texel[i][RCOMP];
- ChanTemp r = rgba[i][RCOMP] + Lt;
- ChanTemp g = rgba[i][GCOMP] + Lt;
- ChanTemp b = rgba[i][BCOMP] + Lt;
- rgba[i][RCOMP] = MIN2(r, CHAN_MAX);
- rgba[i][GCOMP] = MIN2(g, CHAN_MAX);
- rgba[i][BCOMP] = MIN2(b, CHAN_MAX);
- rgba[i][ACOMP] = CHAN_PRODUCT(rgba[i][ACOMP], texel[i][ACOMP]);
- }
- break;
- case GL_INTENSITY:
- for (i=0;i<n;i++) {
- GLchan It = texel[i][RCOMP];
- ChanTemp r = rgba[i][RCOMP] + It;
- ChanTemp g = rgba[i][GCOMP] + It;
- ChanTemp b = rgba[i][BCOMP] + It;
- ChanTemp a = rgba[i][ACOMP] + It;
- rgba[i][RCOMP] = MIN2(r, CHAN_MAX);
- rgba[i][GCOMP] = MIN2(g, CHAN_MAX);
- rgba[i][BCOMP] = MIN2(b, CHAN_MAX);
- rgba[i][ACOMP] = MIN2(a, CHAN_MAX);
- }
- break;
- case GL_RGB:
- for (i=0;i<n;i++) {
- ChanTemp r = rgba[i][RCOMP] + texel[i][RCOMP];
- ChanTemp g = rgba[i][GCOMP] + texel[i][GCOMP];
- ChanTemp b = rgba[i][BCOMP] + texel[i][BCOMP];
- rgba[i][RCOMP] = MIN2(r, CHAN_MAX);
- rgba[i][GCOMP] = MIN2(g, CHAN_MAX);
- rgba[i][BCOMP] = MIN2(b, CHAN_MAX);
- /* Av = Af */
- }
- break;
- case GL_RGBA:
- for (i=0;i<n;i++) {
- ChanTemp r = rgba[i][RCOMP] + texel[i][RCOMP];
- ChanTemp g = rgba[i][GCOMP] + texel[i][GCOMP];
- ChanTemp b = rgba[i][BCOMP] + texel[i][BCOMP];
- rgba[i][RCOMP] = MIN2(r, CHAN_MAX);
- rgba[i][GCOMP] = MIN2(g, CHAN_MAX);
- rgba[i][BCOMP] = MIN2(b, CHAN_MAX);
- rgba[i][ACOMP] = CHAN_PRODUCT(rgba[i][ACOMP], texel[i][ACOMP]);
- }
- break;
- default:
- _mesa_problem(ctx, "Bad format (GL_ADD) in texture_apply");
- return;
- }
- break;
-
- default:
- _mesa_problem(ctx, "Bad env mode in texture_apply");
- return;
- }
-}
-
-
-
-/**
* Apply texture mapping to a span of fragments.
*/
void
_swrast_texture_span( GLcontext *ctx, SWspan *span )
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
- GLchan primary_rgba[MAX_WIDTH][4];
+ GLfloat primary_rgba[MAX_WIDTH][4];
GLuint unit;
- ASSERT(span->end < MAX_WIDTH);
+ ASSERT(span->end <= MAX_WIDTH);
/*
* Save copy of the incoming fragment colors (the GL_PRIMARY_COLOR)
*/
- if (swrast->_AnyTextureCombine)
- MEMCPY(primary_rgba, span->array->rgba, 4 * span->end * sizeof(GLchan));
+ if (swrast->_TextureCombinePrimary) {
+ GLuint i;
+ for (i = 0; i < span->end; i++) {
+ primary_rgba[i][RCOMP] = CHAN_TO_FLOAT(span->array->rgba[i][RCOMP]);
+ primary_rgba[i][GCOMP] = CHAN_TO_FLOAT(span->array->rgba[i][GCOMP]);
+ primary_rgba[i][BCOMP] = CHAN_TO_FLOAT(span->array->rgba[i][BCOMP]);
+ primary_rgba[i][ACOMP] = CHAN_TO_FLOAT(span->array->rgba[i][ACOMP]);
+ }
+ }
/* First must sample all bump maps */
for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
- if (ctx->Texture.Unit[unit]._ReallyEnabled &&
- ctx->Texture.Unit[unit]._CurrentCombine->ModeRGB == GL_BUMP_ENVMAP_ATI) {
- const GLfloat (*texcoords)[4]
- = (const GLfloat (*)[4])
+ const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+
+ if (texUnit->_ReallyEnabled &&
+ texUnit->_CurrentCombine->ModeRGB == GL_BUMP_ENVMAP_ATI) {
+ const GLfloat (*texcoords)[4] = (const GLfloat (*)[4])
span->array->attribs[FRAG_ATTRIB_TEX0 + unit];
- GLfloat (*targetcoords)[4]
- = (GLfloat (*)[4])
+ float4_array targetcoords =
span->array->attribs[FRAG_ATTRIB_TEX0 +
ctx->Texture.Unit[unit].BumpTarget - GL_TEXTURE0];
- const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
const struct gl_texture_object *curObj = texUnit->_Current;
GLfloat *lambda = span->array->lambda[unit];
- GLchan (*texels)[4] = (GLchan (*)[4])
- (swrast->TexelBuffer + unit * (span->end * 4 * sizeof(GLchan)));
+ float4_array texels = get_texel_array(swrast, unit);
GLuint i;
GLfloat rotMatrix00 = ctx->Texture.Unit[unit].RotMatrix[0];
GLfloat rotMatrix01 = ctx->Texture.Unit[unit].RotMatrix[1];
@@ -1293,19 +640,10 @@ _swrast_texture_span( GLcontext *ctx, SWspan *span )
not sure this can work correctly even ignoring
the problem that channel is unsigned */
for (i = 0; i < span->end; i++) {
-#if CHAN_TYPE == GL_FLOAT
targetcoords[i][0] += (texels[i][0] * rotMatrix00 + texels[i][1] *
rotMatrix01) / targetcoords[i][3];
targetcoords[i][1] += (texels[i][0] * rotMatrix10 + texels[i][1] *
rotMatrix11) / targetcoords[i][3];
-#else
- targetcoords[i][0] += (CHAN_TO_FLOAT(texels[i][1]) * rotMatrix00 +
- CHAN_TO_FLOAT(texels[i][1]) * rotMatrix01) /
- targetcoords[i][3];
- targetcoords[i][1] += (CHAN_TO_FLOAT(texels[i][0]) * rotMatrix10 +
- CHAN_TO_FLOAT(texels[i][1]) * rotMatrix11) /
- targetcoords[i][3];
-#endif
}
}
}
@@ -1315,16 +653,14 @@ _swrast_texture_span( GLcontext *ctx, SWspan *span )
* accomodate GL_ARB_texture_env_crossbar.
*/
for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
- if (ctx->Texture.Unit[unit]._ReallyEnabled &&
- ctx->Texture.Unit[unit]._CurrentCombine->ModeRGB != GL_BUMP_ENVMAP_ATI) {
- const GLfloat (*texcoords)[4]
- = (const GLfloat (*)[4])
+ const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+ if (texUnit->_ReallyEnabled &&
+ texUnit->_CurrentCombine->ModeRGB != GL_BUMP_ENVMAP_ATI) {
+ const GLfloat (*texcoords)[4] = (const GLfloat (*)[4])
span->array->attribs[FRAG_ATTRIB_TEX0 + unit];
- const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
const struct gl_texture_object *curObj = texUnit->_Current;
GLfloat *lambda = span->array->lambda[unit];
- GLchan (*texels)[4] = (GLchan (*)[4])
- (swrast->TexelBuffer + unit * (span->end * 4 * sizeof(GLchan)));
+ float4_array texels = get_texel_array(swrast, unit);
/* adjust texture lod (lambda) */
if (span->arrayMask & SPAN_LAMBDA) {
@@ -1357,13 +693,7 @@ _swrast_texture_span( GLcontext *ctx, SWspan *span )
/* GL_SGI_texture_color_table */
if (texUnit->ColorTableEnabled) {
-#if CHAN_TYPE == GL_UNSIGNED_BYTE
- _mesa_lookup_rgba_ubyte(&texUnit->ColorTable, span->end, texels);
-#elif CHAN_TYPE == GL_UNSIGNED_SHORT
- _mesa_lookup_rgba_ubyte(&texUnit->ColorTable, span->end, texels);
-#else
_mesa_lookup_rgba_float(&texUnit->ColorTable, span->end, texels);
-#endif
}
/* GL_EXT_texture_swizzle */
@@ -1373,31 +703,16 @@ _swrast_texture_span( GLcontext *ctx, SWspan *span )
}
}
-
/*
* OK, now apply the texture (aka texture combine/blend).
* We modify the span->color.rgba values.
*/
for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
if (ctx->Texture.Unit[unit]._ReallyEnabled) {
- const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
- if (texUnit->_CurrentCombine != &texUnit->_EnvMode ) {
- texture_combine( ctx, unit, span->end,
- (CONST GLchan (*)[4]) primary_rgba,
- swrast->TexelBuffer,
- span->array->rgba );
- }
- else {
- /* conventional texture blend */
- const GLchan (*texels)[4] = (const GLchan (*)[4])
- (swrast->TexelBuffer + unit *
- (span->end * 4 * sizeof(GLchan)));
-
-
- texture_apply( ctx, texUnit, span->end,
- (CONST GLchan (*)[4]) primary_rgba, texels,
- span->array->rgba );
- }
+ texture_combine( ctx, unit, span->end,
+ primary_rgba,
+ swrast->TexelBuffer,
+ span->array->rgba );
}
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-19 01:28:51 +0000