-/* $Id: s_texture.c,v 1.60 2002/04/12 21:17:28 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 4.1
+ * Version: 6.1
*
- * Copyright (C) 1999-2002 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"),
#include "context.h"
#include "colormac.h"
#include "macros.h"
-#include "mmath.h"
-#include "mem.h"
+#include "imports.h"
#include "texformat.h"
#include "teximage.h"
#define WEIGHT_SHIFT 16
+/*
+ * Compute the remainder of a divided by b, but be careful with
+ * negative values so that GL_REPEAT mode works right.
+ */
+static INLINE GLint
+repeat_remainder(GLint a, GLint b)
+{
+ if (a >= 0)
+ return a % b;
+ else
+ return (a + 1) % b + b - 1;
+}
+
+
/*
* Used to compute texel locations for linear sampling.
* Input:
- * wrapMode = GL_REPEAT, GL_CLAMP, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_BORDER_ARB
+ * wrapMode = GL_REPEAT, GL_CLAMP, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_BORDER
* S = texcoord in [0,1]
* SIZE = width (or height or depth) of texture
* Output:
{ \
if (wrapMode == GL_REPEAT) { \
U = S * SIZE - 0.5F; \
- I0 = IFLOOR(U) & (SIZE - 1); \
- I1 = (I0 + 1) & (SIZE - 1); \
+ if (tObj->_IsPowerOfTwo) { \
+ I0 = IFLOOR(U) & (SIZE - 1); \
+ I1 = (I0 + 1) & (SIZE - 1); \
+ } \
+ else { \
+ I0 = repeat_remainder(IFLOOR(U), SIZE); \
+ I1 = repeat_remainder(I0 + 1, SIZE); \
+ } \
} \
else if (wrapMode == GL_CLAMP_TO_EDGE) { \
if (S <= 0.0F) \
if (I1 >= (GLint) SIZE) \
I1 = SIZE - 1; \
} \
- else if (wrapMode == GL_CLAMP_TO_BORDER_ARB) { \
+ else if (wrapMode == GL_CLAMP_TO_BORDER) { \
const GLfloat min = -1.0F / (2.0F * SIZE); \
const GLfloat max = 1.0F - min; \
if (S <= min) \
I0 = IFLOOR(U); \
I1 = I0 + 1; \
} \
- else if (wrapMode == GL_MIRRORED_REPEAT_ARB) { \
+ else if (wrapMode == GL_MIRRORED_REPEAT) { \
const GLint flr = IFLOOR(S); \
if (flr & 1) \
U = 1.0F - (S - (GLfloat) flr); /* flr is odd */ \
else \
U = S - (GLfloat) flr; /* flr is even */ \
+ U = (U * SIZE) - 0.5F; \
+ I0 = IFLOOR(U); \
+ I1 = I0 + 1; \
+ if (I0 < 0) \
+ I0 = 0; \
+ if (I1 >= (GLint) SIZE) \
+ I1 = SIZE - 1; \
+ } \
+ else if (wrapMode == GL_MIRROR_CLAMP_EXT) { \
+ U = (GLfloat) fabs(S); \
+ if (U >= 1.0F) \
+ U = (GLfloat) SIZE; \
+ else \
+ U *= SIZE; \
+ U -= 0.5F; \
+ I0 = IFLOOR(U); \
+ I1 = I0 + 1; \
+ } \
+ else if (wrapMode == GL_MIRROR_CLAMP_TO_EDGE_EXT) { \
+ U = (GLfloat) fabs(S); \
+ if (U >= 1.0F) \
+ U = (GLfloat) SIZE; \
+ else \
+ U *= SIZE; \
+ U -= 0.5F; \
I0 = IFLOOR(U); \
I1 = I0 + 1; \
if (I0 < 0) \
if (I1 >= (GLint) SIZE) \
I1 = SIZE - 1; \
} \
+ else if (wrapMode == GL_MIRROR_CLAMP_TO_BORDER_EXT) { \
+ const GLfloat min = -1.0F / (2.0F * SIZE); \
+ const GLfloat max = 1.0F - min; \
+ U = (GLfloat) fabs(S); \
+ if (U <= min) \
+ U = min * SIZE; \
+ else if (U >= max) \
+ U = max * SIZE; \
+ else \
+ U *= SIZE; \
+ U -= 0.5F; \
+ I0 = IFLOOR(U); \
+ I1 = I0 + 1; \
+ } \
else { \
ASSERT(wrapMode == GL_CLAMP); \
if (S <= 0.0F) \
/* s limited to [0,1) */ \
/* i limited to [0,size-1] */ \
I = IFLOOR(S * SIZE); \
- I &= (SIZE - 1); \
+ if (tObj->_IsPowerOfTwo) \
+ I &= (SIZE - 1); \
+ else \
+ I = repeat_remainder(I, SIZE); \
} \
else if (wrapMode == GL_CLAMP_TO_EDGE) { \
/* s limited to [min,max] */ \
else \
I = IFLOOR(S * SIZE); \
} \
- else if (wrapMode == GL_CLAMP_TO_BORDER_ARB) { \
+ else if (wrapMode == GL_CLAMP_TO_BORDER) { \
/* s limited to [min,max] */ \
/* i limited to [-1, size] */ \
const GLfloat min = -1.0F / (2.0F * SIZE); \
else \
I = IFLOOR(S * SIZE); \
} \
- else if (wrapMode == GL_MIRRORED_REPEAT_ARB) { \
+ else if (wrapMode == GL_MIRRORED_REPEAT) { \
const GLfloat min = 1.0F / (2.0F * SIZE); \
const GLfloat max = 1.0F - min; \
const GLint flr = IFLOOR(S); \
else \
I = IFLOOR(u * SIZE); \
} \
+ else if (wrapMode == GL_MIRROR_CLAMP_EXT) { \
+ /* s limited to [0,1] */ \
+ /* i limited to [0,size-1] */ \
+ const GLfloat u = (GLfloat) fabs(S); \
+ if (u <= 0.0F) \
+ I = 0; \
+ else if (u >= 1.0F) \
+ I = SIZE - 1; \
+ else \
+ I = IFLOOR(u * SIZE); \
+ } \
+ else if (wrapMode == GL_MIRROR_CLAMP_TO_EDGE_EXT) { \
+ /* s limited to [min,max] */ \
+ /* i limited to [0, size-1] */ \
+ const GLfloat min = 1.0F / (2.0F * SIZE); \
+ const GLfloat max = 1.0F - min; \
+ const GLfloat u = (GLfloat) fabs(S); \
+ if (u < min) \
+ I = 0; \
+ else if (u > max) \
+ I = SIZE - 1; \
+ else \
+ I = IFLOOR(u * SIZE); \
+ } \
+ else if (wrapMode == GL_MIRROR_CLAMP_TO_BORDER_EXT) { \
+ /* s limited to [min,max] */ \
+ /* i limited to [0, size-1] */ \
+ const GLfloat min = -1.0F / (2.0F * SIZE); \
+ const GLfloat max = 1.0F - min; \
+ const GLfloat u = (GLfloat) fabs(S); \
+ if (u < min) \
+ I = -1; \
+ else if (u > max) \
+ I = SIZE; \
+ else \
+ I = IFLOOR(u * SIZE); \
+ } \
else { \
ASSERT(wrapMode == GL_CLAMP); \
/* s limited to [0,1] */ \
}
+/* Power of two image sizes only */
#define COMPUTE_LINEAR_REPEAT_TEXEL_LOCATION(S, U, SIZE, I0, I1) \
{ \
U = S * SIZE - 0.5F; \
#define K1BIT 32
+/*
+ * Do the lookup for GL_SGI_texture_color_table.
+ */
+void
+_swrast_texture_table_lookup(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->FloatTable) {
+ 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->FloatTable) {
+ 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->FloatTable) {
+ 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->FloatTable) {
+ 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->FloatTable) {
+ 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->FloatTable) {
+ 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 _swrast_texture_table_lookup");
+ return;
+ }
+}
+
+
/*
* Get texture palette entry.
i += img->Border;
if (i < 0 || i >= (GLint) img->Width) {
- /* Need this test for GL_CLAMP_TO_BORDER_ARB mode */
- COPY_CHAN4(rgba, tObj->BorderColor);
+ /* Need this test for GL_CLAMP_TO_BORDER mode */
+ COPY_CHAN4(rgba, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i, 0, 0, (GLvoid *) rgba);
+ img->FetchTexelc(img, i, 0, 0, rgba);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, rgba[0], rgba);
}
GLchan t0[4], t1[4]; /* texels */
if (useBorderColor & I0BIT) {
- COPY_CHAN4(t0, tObj->BorderColor);
+ COPY_CHAN4(t0, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i0, 0, 0, (GLvoid *) t0);
+ img->FetchTexelc(img, i0, 0, 0, t0);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, t0[0], t0);
}
}
if (useBorderColor & I1BIT) {
- COPY_CHAN4(t1, tObj->BorderColor);
+ COPY_CHAN4(t1, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i1, 0, 0, (GLvoid *) t1);
+ img->FetchTexelc(img, i1, 0, 0, t1);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, t1[0], t1);
}
static void
sample_1d_nearest_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
for (i = 0; i < n; i++) {
GLint level;
COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda[i], level);
- sample_1d_nearest(ctx, tObj, tObj->Image[level], texcoord[i], rgba[i]);
+ sample_1d_nearest(ctx, tObj, tObj->Image[0][level], texcoord[i], rgba[i]);
}
}
static void
sample_1d_linear_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
for (i = 0; i < n; i++) {
GLint level;
COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda[i], level);
- sample_1d_linear(ctx, tObj, tObj->Image[level], texcoord[i], rgba[i]);
+ sample_1d_linear(ctx, tObj, tObj->Image[0][level], texcoord[i], rgba[i]);
}
}
static void
sample_1d_nearest_mipmap_linear(GLcontext *ctx,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
GLint level;
COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda[i], level);
if (level >= tObj->_MaxLevel) {
- sample_1d_nearest(ctx, tObj, tObj->Image[tObj->_MaxLevel],
+ sample_1d_nearest(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
texcoord[i], rgba[i]);
}
else {
GLchan t0[4], t1[4];
const GLfloat f = FRAC(lambda[i]);
- sample_1d_nearest(ctx, tObj, tObj->Image[level ], texcoord[i], t0);
- sample_1d_nearest(ctx, tObj, tObj->Image[level+1], texcoord[i], t1);
+ sample_1d_nearest(ctx, tObj, tObj->Image[0][level ], texcoord[i], t0);
+ sample_1d_nearest(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
static void
sample_1d_linear_mipmap_linear(GLcontext *ctx,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
GLint level;
COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda[i], level);
if (level >= tObj->_MaxLevel) {
- sample_1d_linear(ctx, tObj, tObj->Image[tObj->_MaxLevel],
+ sample_1d_linear(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
texcoord[i], rgba[i]);
}
else {
GLchan t0[4], t1[4];
const GLfloat f = FRAC(lambda[i]);
- sample_1d_linear(ctx, tObj, tObj->Image[level ], texcoord[i], t0);
- sample_1d_linear(ctx, tObj, tObj->Image[level+1], texcoord[i], t1);
+ sample_1d_linear(ctx, tObj, tObj->Image[0][level ], texcoord[i], t0);
+ sample_1d_linear(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
static void
sample_nearest_1d( GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj, GLuint n,
- GLfloat texcoords[][4], const GLfloat lambda[],
+ const GLfloat texcoords[][4], const GLfloat lambda[],
GLchan rgba[][4] )
{
GLuint i;
- struct gl_texture_image *image = tObj->Image[tObj->BaseLevel];
+ struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
(void) lambda;
for (i=0;i<n;i++) {
sample_1d_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
static void
sample_linear_1d( GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj, GLuint n,
- GLfloat texcoords[][4], const GLfloat lambda[],
+ const GLfloat texcoords[][4], const GLfloat lambda[],
GLchan rgba[][4] )
{
GLuint i;
- struct gl_texture_image *image = tObj->Image[tObj->BaseLevel];
+ struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
(void) lambda;
for (i=0;i<n;i++) {
sample_1d_linear(ctx, tObj, image, texcoords[i], rgba[i]);
static void
sample_lambda_1d( GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj, GLuint n,
- GLfloat texcoords[][4],
+ const GLfloat texcoords[][4],
const GLfloat lambda[], GLchan rgba[][4] )
{
GLuint minStart, minEnd; /* texels with minification */
switch (tObj->MinFilter) {
case GL_NEAREST:
for (i = minStart; i < minEnd; i++)
- sample_1d_nearest(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ sample_1d_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
texcoords[i], rgba[i]);
break;
case GL_LINEAR:
for (i = minStart; i < minEnd; i++)
- sample_1d_linear(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ sample_1d_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
texcoords[i], rgba[i]);
break;
case GL_NEAREST_MIPMAP_NEAREST:
switch (tObj->MagFilter) {
case GL_NEAREST:
for (i = magStart; i < magEnd; i++)
- sample_1d_nearest(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ sample_1d_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
texcoords[i], rgba[i]);
break;
case GL_LINEAR:
for (i = magStart; i < magEnd; i++)
- sample_1d_linear(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ sample_1d_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
texcoords[i], rgba[i]);
break;
default:
j += img->Border;
if (i < 0 || i >= (GLint) img->Width || j < 0 || j >= (GLint) img->Height) {
- /* Need this test for GL_CLAMP_TO_BORDER_ARB mode */
- COPY_CHAN4(rgba, tObj->BorderColor);
+ /* Need this test for GL_CLAMP_TO_BORDER mode */
+ COPY_CHAN4(rgba, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i, j, 0, (GLvoid *) rgba);
+ img->FetchTexelc(img, i, j, 0, rgba);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, rgba[0], rgba);
}
GLchan t11[4];
if (useBorderColor & (I0BIT | J0BIT)) {
- COPY_CHAN4(t00, tObj->BorderColor);
+ COPY_CHAN4(t00, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i0, j0, 0, (GLvoid *) t00);
+ img->FetchTexelc(img, i0, j0, 0, t00);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, t00[0], t00);
}
}
if (useBorderColor & (I1BIT | J0BIT)) {
- COPY_CHAN4(t10, tObj->BorderColor);
+ COPY_CHAN4(t10, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i1, j0, 0, (GLvoid *) t10);
+ img->FetchTexelc(img, i1, j0, 0, t10);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, t10[0], t10);
}
}
if (useBorderColor & (I0BIT | J1BIT)) {
- COPY_CHAN4(t01, tObj->BorderColor);
+ COPY_CHAN4(t01, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i0, j1, 0, (GLvoid *) t01);
+ img->FetchTexelc(img, i0, j1, 0, t01);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, t01[0], t01);
}
}
if (useBorderColor & (I1BIT | J1BIT)) {
- COPY_CHAN4(t11, tObj->BorderColor);
+ COPY_CHAN4(t11, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i1, j1, 0, (GLvoid *) t11);
+ img->FetchTexelc(img, i1, j1, 0, t11);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, t11[0], t11);
}
ASSERT(tObj->WrapT == GL_REPEAT);
ASSERT(img->Border == 0);
ASSERT(img->Format != GL_COLOR_INDEX);
+ ASSERT(img->_IsPowerOfTwo);
COMPUTE_LINEAR_REPEAT_TEXEL_LOCATION(texcoord[0], u, width, i0, i1);
COMPUTE_LINEAR_REPEAT_TEXEL_LOCATION(texcoord[1], v, height, j0, j1);
GLchan t01[4];
GLchan t11[4];
- (*img->FetchTexel)(img, i0, j0, 0, (GLvoid *) t00);
- (*img->FetchTexel)(img, i1, j0, 0, (GLvoid *) t10);
- (*img->FetchTexel)(img, i0, j1, 0, (GLvoid *) t01);
- (*img->FetchTexel)(img, i1, j1, 0, (GLvoid *) t11);
+ img->FetchTexelc(img, i0, j0, 0, t00);
+ img->FetchTexelc(img, i1, j0, 0, t10);
+ img->FetchTexelc(img, i0, j1, 0, t01);
+ img->FetchTexelc(img, i1, j1, 0, t11);
#if CHAN_TYPE == GL_FLOAT
rgba[0] = w00 * t00[0] + w10 * t10[0] + w01 * t01[0] + w11 * t11[0];
static void
sample_2d_nearest_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
for (i = 0; i < n; i++) {
GLint level;
COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda[i], level);
- sample_2d_nearest(ctx, tObj, tObj->Image[level], texcoord[i], rgba[i]);
+ sample_2d_nearest(ctx, tObj, tObj->Image[0][level], texcoord[i], rgba[i]);
}
}
static void
sample_2d_linear_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
for (i = 0; i < n; i++) {
GLint level;
COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda[i], level);
- sample_2d_linear(ctx, tObj, tObj->Image[level], texcoord[i], rgba[i]);
+ sample_2d_linear(ctx, tObj, tObj->Image[0][level], texcoord[i], rgba[i]);
}
}
static void
sample_2d_nearest_mipmap_linear(GLcontext *ctx,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
GLint level;
COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda[i], level);
if (level >= tObj->_MaxLevel) {
- sample_2d_nearest(ctx, tObj, tObj->Image[tObj->_MaxLevel],
+ sample_2d_nearest(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
texcoord[i], rgba[i]);
}
else {
GLchan t0[4], t1[4]; /* texels */
const GLfloat f = FRAC(lambda[i]);
- sample_2d_nearest(ctx, tObj, tObj->Image[level ], texcoord[i], t0);
- sample_2d_nearest(ctx, tObj, tObj->Image[level+1], texcoord[i], t1);
+ sample_2d_nearest(ctx, tObj, tObj->Image[0][level ], texcoord[i], t0);
+ sample_2d_nearest(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
static void
sample_2d_linear_mipmap_linear( GLcontext *ctx,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4] )
{
GLuint i;
GLint level;
COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda[i], level);
if (level >= tObj->_MaxLevel) {
- sample_2d_linear(ctx, tObj, tObj->Image[tObj->_MaxLevel],
+ sample_2d_linear(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
texcoord[i], rgba[i]);
}
else {
GLchan t0[4], t1[4]; /* texels */
const GLfloat f = FRAC(lambda[i]);
- sample_2d_linear(ctx, tObj, tObj->Image[level ], texcoord[i], t0);
- sample_2d_linear(ctx, tObj, tObj->Image[level+1], texcoord[i], t1);
+ sample_2d_linear(ctx, tObj, tObj->Image[0][level ], texcoord[i], t0);
+ sample_2d_linear(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
static void
sample_2d_linear_mipmap_linear_repeat( GLcontext *ctx,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4] )
{
GLuint i;
ASSERT(lambda != NULL);
ASSERT(tObj->WrapS == GL_REPEAT);
ASSERT(tObj->WrapT == GL_REPEAT);
+ ASSERT(tObj->_IsPowerOfTwo);
for (i = 0; i < n; i++) {
GLint level;
COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda[i], level);
if (level >= tObj->_MaxLevel) {
- sample_2d_linear_repeat(ctx, tObj, tObj->Image[tObj->_MaxLevel],
+ sample_2d_linear_repeat(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
texcoord[i], rgba[i]);
}
else {
GLchan t0[4], t1[4]; /* texels */
const GLfloat f = FRAC(lambda[i]);
- sample_2d_linear_repeat(ctx, tObj, tObj->Image[level ], texcoord[i], t0);
- sample_2d_linear_repeat(ctx, tObj, tObj->Image[level+1], texcoord[i], t1);
+ sample_2d_linear_repeat(ctx, tObj, tObj->Image[0][level ], texcoord[i], t0);
+ sample_2d_linear_repeat(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
static void
sample_nearest_2d( GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj, GLuint n,
- GLfloat texcoords[][4],
+ const GLfloat texcoords[][4],
const GLfloat lambda[], GLchan rgba[][4] )
{
GLuint i;
- struct gl_texture_image *image = tObj->Image[tObj->BaseLevel];
+ struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
(void) lambda;
for (i=0;i<n;i++) {
sample_2d_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
static void
sample_linear_2d( GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj, GLuint n,
- GLfloat texcoords[][4],
+ const GLfloat texcoords[][4],
const GLfloat lambda[], GLchan rgba[][4] )
{
GLuint i;
- struct gl_texture_image *image = tObj->Image[tObj->BaseLevel];
+ struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
(void) lambda;
for (i=0;i<n;i++) {
sample_2d_linear(ctx, tObj, image, texcoords[i], rgba[i]);
* Optimized 2-D texture sampling:
* S and T wrap mode == GL_REPEAT
* GL_NEAREST min/mag filter
- * No border
+ * No border,
+ * RowStride == Width,
* Format = GL_RGB
*/
static void
opt_sample_rgb_2d( GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoords[][4],
+ GLuint n, const GLfloat texcoords[][4],
const GLfloat lambda[], GLchan rgba[][4] )
{
- const struct gl_texture_image *img = tObj->Image[tObj->BaseLevel];
+ const struct gl_texture_image *img = tObj->Image[0][tObj->BaseLevel];
const GLfloat width = (GLfloat) img->Width;
const GLfloat height = (GLfloat) img->Height;
const GLint colMask = img->Width - 1;
ASSERT(tObj->WrapT==GL_REPEAT);
ASSERT(img->Border==0);
ASSERT(img->Format==GL_RGB);
+ ASSERT(img->_IsPowerOfTwo);
for (k=0; k<n; k++) {
GLint i = IFLOOR(texcoords[k][0] * width) & colMask;
* S and T wrap mode == GL_REPEAT
* GL_NEAREST min/mag filter
* No border
+ * RowStride == Width,
* Format = GL_RGBA
*/
static void
opt_sample_rgba_2d( GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoords[][4],
+ GLuint n, const GLfloat texcoords[][4],
const GLfloat lambda[], GLchan rgba[][4] )
{
- const struct gl_texture_image *img = tObj->Image[tObj->BaseLevel];
+ const struct gl_texture_image *img = tObj->Image[0][tObj->BaseLevel];
const GLfloat width = (GLfloat) img->Width;
const GLfloat height = (GLfloat) img->Height;
const GLint colMask = img->Width - 1;
ASSERT(tObj->WrapT==GL_REPEAT);
ASSERT(img->Border==0);
ASSERT(img->Format==GL_RGBA);
+ ASSERT(img->_IsPowerOfTwo);
for (i = 0; i < n; i++) {
const GLint col = IFLOOR(texcoords[i][0] * width) & colMask;
static void
sample_lambda_2d( GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoords[][4],
+ GLuint n, const GLfloat texcoords[][4],
const GLfloat lambda[], GLchan rgba[][4] )
{
- const struct gl_texture_image *tImg = tObj->Image[tObj->BaseLevel];
+ const struct gl_texture_image *tImg = tObj->Image[0][tObj->BaseLevel];
GLuint minStart, minEnd; /* texels with minification */
GLuint magStart, magEnd; /* texels with magnification */
- const GLboolean repeatNoBorder = (tObj->WrapS == GL_REPEAT)
+ const GLboolean repeatNoBorderPOT = (tObj->WrapS == GL_REPEAT)
&& (tObj->WrapT == GL_REPEAT)
- && (tImg->Border == 0)
- && (tImg->Format != GL_COLOR_INDEX);
+ && (tImg->Border == 0 && (tImg->Width == tImg->RowStride))
+ && (tImg->Format != GL_COLOR_INDEX)
+ && tImg->_IsPowerOfTwo;
ASSERT(lambda != NULL);
compute_min_mag_ranges(SWRAST_CONTEXT(ctx)->_MinMagThresh[texUnit],
const GLuint m = minEnd - minStart;
switch (tObj->MinFilter) {
case GL_NEAREST:
- if (repeatNoBorder) {
+ if (repeatNoBorderPOT) {
switch (tImg->Format) {
case GL_RGB:
opt_sample_rgb_2d(ctx, texUnit, tObj, m, texcoords + minStart,
NULL, rgba + minStart);
break;
case GL_NEAREST_MIPMAP_NEAREST:
- sample_2d_nearest_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
+ sample_2d_nearest_mipmap_nearest(ctx, tObj, m,
+ texcoords + minStart,
lambda + minStart, rgba + minStart);
break;
case GL_LINEAR_MIPMAP_NEAREST:
lambda + minStart, rgba + minStart);
break;
case GL_LINEAR_MIPMAP_LINEAR:
- if (repeatNoBorder)
+ if (repeatNoBorderPOT)
sample_2d_linear_mipmap_linear_repeat(ctx, tObj, m,
texcoords + minStart, lambda + minStart, rgba + minStart);
else
switch (tObj->MagFilter) {
case GL_NEAREST:
- if (repeatNoBorder) {
+ if (repeatNoBorderPOT) {
switch (tImg->Format) {
case GL_RGB:
opt_sample_rgb_2d(ctx, texUnit, tObj, m, texcoords + magStart,
if (i < 0 || i >= (GLint) img->Width ||
j < 0 || j >= (GLint) img->Height ||
k < 0 || k >= (GLint) img->Depth) {
- /* Need this test for GL_CLAMP_TO_BORDER_ARB mode */
- COPY_CHAN4(rgba, tObj->BorderColor);
+ /* Need this test for GL_CLAMP_TO_BORDER mode */
+ COPY_CHAN4(rgba, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i, j, k, (GLvoid *) rgba);
+ img->FetchTexelc(img, i, j, k, rgba);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, rgba[0], rgba);
}
GLchan t100[4], t110[4], t101[4], t111[4];
if (useBorderColor & (I0BIT | J0BIT | K0BIT)) {
- COPY_CHAN4(t000, tObj->BorderColor);
+ COPY_CHAN4(t000, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i0, j0, k0, (GLvoid *) t000);
+ img->FetchTexelc(img, i0, j0, k0, t000);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, t000[0], t000);
}
}
if (useBorderColor & (I1BIT | J0BIT | K0BIT)) {
- COPY_CHAN4(t100, tObj->BorderColor);
+ COPY_CHAN4(t100, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i1, j0, k0, (GLvoid *) t100);
+ img->FetchTexelc(img, i1, j0, k0, t100);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, t100[0], t100);
}
}
if (useBorderColor & (I0BIT | J1BIT | K0BIT)) {
- COPY_CHAN4(t010, tObj->BorderColor);
+ COPY_CHAN4(t010, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i0, j1, k0, (GLvoid *) t010);
+ img->FetchTexelc(img, i0, j1, k0, t010);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, t010[0], t010);
}
}
if (useBorderColor & (I1BIT | J1BIT | K0BIT)) {
- COPY_CHAN4(t110, tObj->BorderColor);
+ COPY_CHAN4(t110, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i1, j1, k0, (GLvoid *) t110);
+ img->FetchTexelc(img, i1, j1, k0, t110);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, t110[0], t110);
}
}
if (useBorderColor & (I0BIT | J0BIT | K1BIT)) {
- COPY_CHAN4(t001, tObj->BorderColor);
+ COPY_CHAN4(t001, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i0, j0, k1, (GLvoid *) t001);
+ img->FetchTexelc(img, i0, j0, k1, t001);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, t001[0], t001);
}
}
if (useBorderColor & (I1BIT | J0BIT | K1BIT)) {
- COPY_CHAN4(t101, tObj->BorderColor);
+ COPY_CHAN4(t101, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i1, j0, k1, (GLvoid *) t101);
+ img->FetchTexelc(img, i1, j0, k1, t101);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, t101[0], t101);
}
}
if (useBorderColor & (I0BIT | J1BIT | K1BIT)) {
- COPY_CHAN4(t011, tObj->BorderColor);
+ COPY_CHAN4(t011, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i0, j1, k1, (GLvoid *) t011);
+ img->FetchTexelc(img, i0, j1, k1, t011);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, t011[0], t011);
}
}
if (useBorderColor & (I1BIT | J1BIT | K1BIT)) {
- COPY_CHAN4(t111, tObj->BorderColor);
+ COPY_CHAN4(t111, tObj->_BorderChan);
}
else {
- (*img->FetchTexel)(img, i1, j1, k1, (GLvoid *) t111);
+ img->FetchTexelc(img, i1, j1, k1, t111);
if (img->Format == GL_COLOR_INDEX) {
palette_sample(ctx, tObj, t111[0], t111);
}
static void
sample_3d_nearest_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4] )
{
GLuint i;
for (i = 0; i < n; i++) {
GLint level;
COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda[i], level);
- sample_3d_nearest(ctx, tObj, tObj->Image[level], texcoord[i], rgba[i]);
+ sample_3d_nearest(ctx, tObj, tObj->Image[0][level], texcoord[i], rgba[i]);
}
}
static void
sample_3d_linear_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
for (i = 0; i < n; i++) {
GLint level;
COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda[i], level);
- sample_3d_linear(ctx, tObj, tObj->Image[level], texcoord[i], rgba[i]);
+ sample_3d_linear(ctx, tObj, tObj->Image[0][level], texcoord[i], rgba[i]);
}
}
static void
sample_3d_nearest_mipmap_linear(GLcontext *ctx,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
GLint level;
COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda[i], level);
if (level >= tObj->_MaxLevel) {
- sample_3d_nearest(ctx, tObj, tObj->Image[tObj->_MaxLevel],
+ sample_3d_nearest(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
texcoord[i], rgba[i]);
}
else {
GLchan t0[4], t1[4]; /* texels */
const GLfloat f = FRAC(lambda[i]);
- sample_3d_nearest(ctx, tObj, tObj->Image[level ], texcoord[i], t0);
- sample_3d_nearest(ctx, tObj, tObj->Image[level+1], texcoord[i], t1);
+ sample_3d_nearest(ctx, tObj, tObj->Image[0][level ], texcoord[i], t0);
+ sample_3d_nearest(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
static void
sample_3d_linear_mipmap_linear(GLcontext *ctx,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
GLint level;
COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda[i], level);
if (level >= tObj->_MaxLevel) {
- sample_3d_linear(ctx, tObj, tObj->Image[tObj->_MaxLevel],
+ sample_3d_linear(ctx, tObj, tObj->Image[0][tObj->_MaxLevel],
texcoord[i], rgba[i]);
}
else {
GLchan t0[4], t1[4]; /* texels */
const GLfloat f = FRAC(lambda[i]);
- sample_3d_linear(ctx, tObj, tObj->Image[level ], texcoord[i], t0);
- sample_3d_linear(ctx, tObj, tObj->Image[level+1], texcoord[i], t1);
+ sample_3d_linear(ctx, tObj, tObj->Image[0][level ], texcoord[i], t0);
+ sample_3d_linear(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1);
rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
static void
sample_nearest_3d(GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj, GLuint n,
- GLfloat texcoords[][4], const GLfloat lambda[],
+ const GLfloat texcoords[][4], const GLfloat lambda[],
GLchan rgba[][4])
{
GLuint i;
- struct gl_texture_image *image = tObj->Image[tObj->BaseLevel];
+ struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
(void) lambda;
for (i=0;i<n;i++) {
sample_3d_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
static void
sample_linear_3d( GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj, GLuint n,
- GLfloat texcoords[][4],
+ const GLfloat texcoords[][4],
const GLfloat lambda[], GLchan rgba[][4] )
{
GLuint i;
- struct gl_texture_image *image = tObj->Image[tObj->BaseLevel];
+ struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
(void) lambda;
for (i=0;i<n;i++) {
sample_3d_linear(ctx, tObj, image, texcoords[i], rgba[i]);
static void
sample_lambda_3d( GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj, GLuint n,
- GLfloat texcoords[][4], const GLfloat lambda[],
+ const GLfloat texcoords[][4], const GLfloat lambda[],
GLchan rgba[][4] )
{
GLuint minStart, minEnd; /* texels with minification */
switch (tObj->MinFilter) {
case GL_NEAREST:
for (i = minStart; i < minEnd; i++)
- sample_3d_nearest(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ sample_3d_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
texcoords[i], rgba[i]);
break;
case GL_LINEAR:
for (i = minStart; i < minEnd; i++)
- sample_3d_linear(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ sample_3d_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
texcoords[i], rgba[i]);
break;
case GL_NEAREST_MIPMAP_NEAREST:
switch (tObj->MagFilter) {
case GL_NEAREST:
for (i = magStart; i < magEnd; i++)
- sample_3d_nearest(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ sample_3d_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
texcoords[i], rgba[i]);
break;
case GL_LINEAR:
for (i = magStart; i < magEnd; i++)
- sample_3d_linear(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ sample_3d_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel],
texcoords[i], rgba[i]);
break;
default:
const GLfloat ry = texcoord[1];
const GLfloat rz = texcoord[2];
const struct gl_texture_image **imgArray;
- const GLfloat arx = ABSF(rx), ary = ABSF(ry), arz = ABSF(rz);
+ const GLfloat arx = FABSF(rx), ary = FABSF(ry), arz = FABSF(rz);
GLfloat sc, tc, ma;
if (arx > ary && arx > arz) {
if (rx >= 0.0F) {
- imgArray = (const struct gl_texture_image **) texObj->Image;
+ imgArray = (const struct gl_texture_image **) texObj->Image[FACE_POS_X];
sc = -rz;
tc = -ry;
ma = arx;
}
else {
- imgArray = (const struct gl_texture_image **) texObj->NegX;
+ imgArray = (const struct gl_texture_image **) texObj->Image[FACE_NEG_X];
sc = rz;
tc = -ry;
ma = arx;
}
else if (ary > arx && ary > arz) {
if (ry >= 0.0F) {
- imgArray = (const struct gl_texture_image **) texObj->PosY;
+ imgArray = (const struct gl_texture_image **) texObj->Image[FACE_POS_Y];
sc = rx;
tc = rz;
ma = ary;
}
else {
- imgArray = (const struct gl_texture_image **) texObj->NegY;
+ imgArray = (const struct gl_texture_image **) texObj->Image[FACE_NEG_Y];
sc = rx;
tc = -rz;
ma = ary;
}
else {
if (rz > 0.0F) {
- imgArray = (const struct gl_texture_image **) texObj->PosZ;
+ imgArray = (const struct gl_texture_image **) texObj->Image[FACE_POS_Z];
sc = rx;
tc = -ry;
ma = arz;
}
else {
- imgArray = (const struct gl_texture_image **) texObj->NegZ;
+ imgArray = (const struct gl_texture_image **) texObj->Image[FACE_NEG_Z];
sc = -rx;
tc = -ry;
ma = arz;
static void
sample_nearest_cube(GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj, GLuint n,
- GLfloat texcoords[][4], const GLfloat lambda[],
+ const GLfloat texcoords[][4], const GLfloat lambda[],
GLchan rgba[][4])
{
GLuint i;
static void
sample_linear_cube(GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj, GLuint n,
- GLfloat texcoords[][4],
+ const GLfloat texcoords[][4],
const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
static void
-sample_cube_nearest_mipmap_nearest(GLcontext *ctx,
+sample_cube_nearest_mipmap_nearest(GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
static void
-sample_cube_linear_mipmap_nearest(GLcontext *ctx,
+sample_cube_linear_mipmap_nearest(GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
static void
-sample_cube_nearest_mipmap_linear(GLcontext *ctx,
+sample_cube_nearest_mipmap_linear(GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
static void
-sample_cube_linear_mipmap_linear(GLcontext *ctx,
+sample_cube_linear_mipmap_linear(GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj,
- GLuint n, GLfloat texcoord[][4],
+ GLuint n, const GLfloat texcoord[][4],
const GLfloat lambda[], GLchan rgba[][4])
{
GLuint i;
static void
sample_lambda_cube( GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj, GLuint n,
- GLfloat texcoords[][4], const GLfloat lambda[],
+ const GLfloat texcoords[][4], const GLfloat lambda[],
GLchan rgba[][4])
{
GLuint minStart, minEnd; /* texels with minification */
lambda + minStart, rgba + minStart);
break;
case GL_NEAREST_MIPMAP_NEAREST:
- sample_cube_nearest_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
+ sample_cube_nearest_mipmap_nearest(ctx, texUnit, tObj, m,
+ texcoords + minStart,
lambda + minStart, rgba + minStart);
break;
case GL_LINEAR_MIPMAP_NEAREST:
- sample_cube_linear_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
+ sample_cube_linear_mipmap_nearest(ctx, texUnit, tObj, m,
+ texcoords + minStart,
lambda + minStart, rgba + minStart);
break;
case GL_NEAREST_MIPMAP_LINEAR:
- sample_cube_nearest_mipmap_linear(ctx, tObj, m, texcoords + minStart,
+ sample_cube_nearest_mipmap_linear(ctx, texUnit, tObj, m,
+ texcoords + minStart,
lambda + minStart, rgba + minStart);
break;
case GL_LINEAR_MIPMAP_LINEAR:
- sample_cube_linear_mipmap_linear(ctx, tObj, m, texcoords + minStart,
+ sample_cube_linear_mipmap_linear(ctx, texUnit, tObj, m,
+ texcoords + minStart,
lambda + minStart, rgba + minStart);
break;
default:
}
+/**********************************************************************/
+/* Texture Rectangle Sampling Functions */
+/**********************************************************************/
+
+static void
+sample_nearest_rect(GLcontext *ctx, GLuint texUnit,
+ const struct gl_texture_object *tObj, GLuint n,
+ const GLfloat texcoords[][4], const GLfloat lambda[],
+ GLchan rgba[][4])
+{
+ const struct gl_texture_image *img = tObj->Image[0][0];
+ const GLfloat width = (GLfloat) img->Width;
+ const GLfloat height = (GLfloat) img->Height;
+ const GLint width_minus_1 = img->Width - 1;
+ const GLint height_minus_1 = img->Height - 1;
+ GLuint i;
+
+ (void) texUnit;
+ (void) lambda;
+
+ ASSERT(tObj->WrapS == GL_CLAMP ||
+ tObj->WrapS == GL_CLAMP_TO_EDGE ||
+ tObj->WrapS == GL_CLAMP_TO_BORDER);
+ ASSERT(tObj->WrapT == GL_CLAMP ||
+ tObj->WrapT == GL_CLAMP_TO_EDGE ||
+ tObj->WrapT == GL_CLAMP_TO_BORDER);
+ ASSERT(img->Format != GL_COLOR_INDEX);
+
+ /* XXX move Wrap mode tests outside of loops for common cases */
+ for (i = 0; i < n; i++) {
+ GLint row, col;
+ /* NOTE: we DO NOT use [0, 1] texture coordinates! */
+ if (tObj->WrapS == GL_CLAMP) {
+ col = IFLOOR( CLAMP(texcoords[i][0], 0.0F, width) );
+ }
+ else if (tObj->WrapS == GL_CLAMP_TO_EDGE) {
+ col = IFLOOR( CLAMP(texcoords[i][0], 0.5F, width - 0.5F) );
+ }
+ else {
+ col = IFLOOR( CLAMP(texcoords[i][0], -0.5F, width + 0.5F) );
+ }
+ if (tObj->WrapT == GL_CLAMP) {
+ row = IFLOOR( CLAMP(texcoords[i][1], 0.0F, height) );
+ }
+ else if (tObj->WrapT == GL_CLAMP_TO_EDGE) {
+ row = IFLOOR( CLAMP(texcoords[i][1], 0.5F, height - 0.5F) );
+ }
+ else {
+ row = IFLOOR( CLAMP(texcoords[i][1], -0.5F, height + 0.5F) );
+ }
+
+ col = CLAMP(col, 0, width_minus_1);
+ row = CLAMP(row, 0, height_minus_1);
+
+ img->FetchTexelc(img, col, row, 0, rgba[i]);
+ }
+}
+
+
+static void
+sample_linear_rect(GLcontext *ctx, GLuint texUnit,
+ const struct gl_texture_object *tObj, GLuint n,
+ const GLfloat texcoords[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
+{
+ const struct gl_texture_image *img = tObj->Image[0][0];
+ const GLfloat width = (GLfloat) img->Width;
+ const GLfloat height = (GLfloat) img->Height;
+ const GLint width_minus_1 = img->Width - 1;
+ const GLint height_minus_1 = img->Height - 1;
+ GLuint i;
+
+ (void) texUnit;
+ (void) lambda;
+
+ ASSERT(tObj->WrapS == GL_CLAMP ||
+ tObj->WrapS == GL_CLAMP_TO_EDGE ||
+ tObj->WrapS == GL_CLAMP_TO_BORDER);
+ ASSERT(tObj->WrapT == GL_CLAMP ||
+ tObj->WrapT == GL_CLAMP_TO_EDGE ||
+ tObj->WrapT == GL_CLAMP_TO_BORDER);
+ ASSERT(img->Format != GL_COLOR_INDEX);
+
+ /* XXX lots of opportunity for optimization in this loop */
+ for (i = 0; i < n; i++) {
+ GLfloat frow, fcol;
+ GLint row0, col0, row1, col1;
+ GLchan t00[4], t01[4], t10[4], t11[4];
+ GLfloat a, b, w00, w01, w10, w11;
+
+ /* NOTE: we DO NOT use [0, 1] texture coordinates! */
+ if (tObj->WrapS == GL_CLAMP) {
+ fcol = CLAMP(texcoords[i][0], 0.0F, width);
+ }
+ else if (tObj->WrapS == GL_CLAMP_TO_EDGE) {
+ fcol = CLAMP(texcoords[i][0], 0.5F, width - 0.5F);
+ }
+ else {
+ fcol = CLAMP(texcoords[i][0], -0.5F, width + 0.5F);
+ }
+ if (tObj->WrapT == GL_CLAMP) {
+ frow = CLAMP(texcoords[i][1], 0.0F, height);
+ }
+ else if (tObj->WrapT == GL_CLAMP_TO_EDGE) {
+ frow = CLAMP(texcoords[i][1], 0.5F, height - 0.5F);
+ }
+ else {
+ frow = CLAMP(texcoords[i][1], -0.5F, height + 0.5F);
+ }
+
+ /* compute integer rows/columns */
+ col0 = IFLOOR(fcol);
+ col1 = col0 + 1;
+ col0 = CLAMP(col0, 0, width_minus_1);
+ col1 = CLAMP(col1, 0, width_minus_1);
+ row0 = IFLOOR(frow);
+ row1 = row0 + 1;
+ row0 = CLAMP(row0, 0, height_minus_1);
+ row1 = CLAMP(row1, 0, height_minus_1);
+
+ /* get four texel samples */
+ img->FetchTexelc(img, col0, row0, 0, t00);
+ img->FetchTexelc(img, col1, row0, 0, t10);
+ img->FetchTexelc(img, col0, row1, 0, t01);
+ img->FetchTexelc(img, col1, row1, 0, t11);
+
+ /* compute sample weights */
+ a = FRAC(fcol);
+ b = FRAC(frow);
+ w00 = (1.0F-a) * (1.0F-b);
+ w10 = a * (1.0F-b);
+ w01 = (1.0F-a) * b ;
+ w11 = a * b ;
+
+ /* compute weighted average of samples */
+ rgba[i][0] =
+ (GLchan) (w00 * t00[0] + w10 * t10[0] + w01 * t01[0] + w11 * t11[0]);
+ rgba[i][1] =
+ (GLchan) (w00 * t00[1] + w10 * t10[1] + w01 * t01[1] + w11 * t11[1]);
+ rgba[i][2] =
+ (GLchan) (w00 * t00[2] + w10 * t10[2] + w01 * t01[2] + w11 * t11[2]);
+ rgba[i][3] =
+ (GLchan) (w00 * t00[3] + w10 * t10[3] + w01 * t01[3] + w11 * t11[3]);
+ }
+}
+
+
+static void
+sample_lambda_rect( GLcontext *ctx, GLuint texUnit,
+ const struct gl_texture_object *tObj, GLuint n,
+ const GLfloat texcoords[][4], const GLfloat lambda[],
+ GLchan rgba[][4])
+{
+ GLuint minStart, minEnd, magStart, magEnd;
+
+ /* We only need lambda to decide between minification and magnification.
+ * There is no mipmapping with rectangular textures.
+ */
+ compute_min_mag_ranges(SWRAST_CONTEXT(ctx)->_MinMagThresh[texUnit],
+ n, lambda, &minStart, &minEnd, &magStart, &magEnd);
+
+ if (minStart < minEnd) {
+ if (tObj->MinFilter == GL_NEAREST) {
+ sample_nearest_rect( ctx, texUnit, tObj, minEnd - minStart,
+ texcoords + minStart, NULL, rgba + minStart);
+ }
+ else {
+ sample_linear_rect( ctx, texUnit, tObj, minEnd - minStart,
+ texcoords + minStart, NULL, rgba + minStart);
+ }
+ }
+ if (magStart < magEnd) {
+ if (tObj->MagFilter == GL_NEAREST) {
+ sample_nearest_rect( ctx, texUnit, tObj, magEnd - magStart,
+ texcoords + magStart, NULL, rgba + magStart);
+ }
+ else {
+ sample_linear_rect( ctx, texUnit, tObj, magEnd - magStart,
+ texcoords + magStart, NULL, rgba + magStart);
+ }
+ }
+}
+
+
+
/*
* Sample a shadow/depth texture.
*/
static void
sample_depth_texture( GLcontext *ctx, GLuint unit,
const struct gl_texture_object *tObj, GLuint n,
- GLfloat texcoords[][4], const GLfloat lambda[],
+ const GLfloat texcoords[][4], const GLfloat lambda[],
GLchan texel[][4] )
{
const GLint baseLevel = tObj->BaseLevel;
- const struct gl_texture_image *texImage = tObj->Image[baseLevel];
+ const struct gl_texture_image *texImage = tObj->Image[0][baseLevel];
const GLuint width = texImage->Width;
const GLuint height = texImage->Height;
- const GLchan ambient = tObj->ShadowAmbient;
+ GLchan ambient;
GLenum function;
GLchan result;
(void) unit;
- ASSERT(tObj->Image[tObj->BaseLevel]->Format == GL_DEPTH_COMPONENT);
- ASSERT(tObj->Dimensions == 1 || tObj->Dimensions == 2);
+ ASSERT(tObj->Image[0][tObj->BaseLevel]->Format == GL_DEPTH_COMPONENT);
+ ASSERT(tObj->Target == GL_TEXTURE_1D ||
+ tObj->Target == GL_TEXTURE_2D ||
+ tObj->Target == GL_TEXTURE_RECTANGLE_NV);
+
+ UNCLAMPED_FLOAT_TO_CHAN(ambient, tObj->ShadowAmbient);
/* XXXX if tObj->MinFilter != tObj->MagFilter, we're ignoring lambda */
for (i = 0; i < n; i++) {
GLfloat depthSample;
GLint col, row;
+ /* XXX fix for texture rectangle! */
COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoords[i][0], width, col);
COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapT, texcoords[i][1], height, row);
- depthSample = *((const GLfloat *) texImage->Data + row * width + col);
+ texImage->FetchTexelf(texImage, col, row, 0, &depthSample);
switch (function) {
case GL_LEQUAL:
GLfloat u, v;
GLuint useBorderTexel;
+ /* XXX fix for texture rectangle! */
COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapS, texcoords[i][0], u, width, i0, i1);
COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapT, texcoords[i][1], v, height,j0, j1);
depth00 = 1.0;
}
else {
- depth00 = *((const GLfloat *) texImage->Data + j0 * width + i0);
+ texImage->FetchTexelf(texImage, i0, j0, 0, &depth00);
}
if (useBorderTexel & (I1BIT | J0BIT)) {
depth10 = 1.0;
}
else {
- depth10 = *((const GLfloat *) texImage->Data + j0 * width + i1);
+ texImage->FetchTexelf(texImage, i1, j0, 0, &depth10);
}
if (useBorderTexel & (I0BIT | J1BIT)) {
depth01 = 1.0;
}
else {
- depth01 = *((const GLfloat *) texImage->Data + j1 * width + i0);
+ texImage->FetchTexelf(texImage, i0, j1, 0, &depth01);
}
if (useBorderTexel & (I1BIT | J1BIT)) {
depth11 = 1.0;
}
else {
- depth11 = *((const GLfloat *) texImage->Data + j1 * width + i1);
+ texImage->FetchTexelf(texImage, i1, j1, 0, &depth11);
}
if (0) {
result = 0;
break;
case GL_NEVER:
- result = CHAN_MAXF;
+ result = CHAN_MAX;
break;
case GL_NONE:
/* ordinary bilinear filtering */
static void
sample_depth_texture2(const GLcontext *ctx,
const struct gl_texture_unit *texUnit,
- GLuint n, GLfloat texcoords[][4],
+ GLuint n, const GLfloat texcoords[][4],
GLchan texel[][4])
{
const struct gl_texture_object *texObj = texUnit->_Current;
const GLint baseLevel = texObj->BaseLevel;
- const struct gl_texture_image *texImage = texObj->Image[baseLevel];
+ const struct gl_texture_image *texImage = texObj->Image[0][baseLevel];
const GLuint width = texImage->Width;
const GLuint height = texImage->Height;
- const GLchan ambient = texObj->ShadowAmbient;
+ GLchan ambient;
GLboolean lequal, gequal;
- if (texObj->Dimensions != 2) {
+ if (texObj->Target != GL_TEXTURE_2D) {
_mesa_problem(ctx, "only 2-D depth textures supported at this time");
return;
}
return;
}
+ UNCLAMPED_FLOAT_TO_CHAN(ambient, tObj->ShadowAmbient);
+
if (texObj->CompareOperator == GL_TEXTURE_LEQUAL_R_SGIX) {
lequal = GL_TRUE;
gequal = GL_FALSE;
count = 0;
for (jj = jmin; jj <= jmax; jj++) {
for (ii = imin; ii <= imax; ii++) {
- GLfloat depthSample = *((const GLfloat *) texImage->Data
- + jj * width + ii);
+ GLfloat depthSample;
+ texImage->FetchTexelf(texImage, ii, jj, 0, &depthSample);
if ((depthSample <= r[i] && lequal) ||
(depthSample >= r[i] && gequal)) {
count++;
#endif
+/**
+ * We use this function when a texture object is in an "incomplete" state.
+ * When a fragment program attempts to sample an incomplete texture we
+ * return black.
+ * Note: frag progs don't observe texture enable/disable flags.
+ */
static void
null_sample_func( GLcontext *ctx, GLuint texUnit,
const struct gl_texture_object *tObj, GLuint n,
- GLfloat texcoords[][4], const GLfloat lambda[],
+ const GLfloat texcoords[][4], const GLfloat lambda[],
GLchan rgba[][4])
{
+ (void) ctx;
+ (void) texUnit;
+ (void) tObj;
+ (void) texcoords;
+ (void) lambda;
+ _mesa_bzero(rgba, n * 4 * sizeof(GLchan));
}
-/**********************************************************************/
-/* Texture Sampling Setup */
-/**********************************************************************/
-
-
-/*
+/**
* Setup the texture sampling function for this texture object.
*/
-void
-_swrast_choose_texture_sample_func( GLcontext *ctx, GLuint texUnit,
+texture_sample_func
+_swrast_choose_texture_sample_func( GLcontext *ctx,
const struct gl_texture_object *t )
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ const GLboolean needLambda = (GLboolean) (t->MinFilter != t->MagFilter);
+ const GLenum format = t->Image[0][t->BaseLevel]->Format;
if (!t->Complete) {
- swrast->TextureSample[texUnit] = null_sample_func;
+ return &null_sample_func;
}
- else {
- const GLboolean needLambda = (GLboolean) (t->MinFilter != t->MagFilter);
- const GLenum format = t->Image[t->BaseLevel]->Format;
- if (needLambda) {
- /* Compute min/mag filter threshold */
- if (t->MagFilter == GL_LINEAR
- && (t->MinFilter == GL_NEAREST_MIPMAP_NEAREST ||
- t->MinFilter == GL_NEAREST_MIPMAP_LINEAR)) {
- swrast->_MinMagThresh[texUnit] = 0.5F;
+ switch (t->Target) {
+ case GL_TEXTURE_1D:
+ if (format == GL_DEPTH_COMPONENT) {
+ return &sample_depth_texture;
+ }
+ else if (needLambda) {
+ return &sample_lambda_1d;
+ }
+ else if (t->MinFilter == GL_LINEAR) {
+ return &sample_linear_1d;
+ }
+ else {
+ ASSERT(t->MinFilter == GL_NEAREST);
+ return &sample_nearest_1d;
+ }
+ break;
+ case GL_TEXTURE_2D:
+ if (format == GL_DEPTH_COMPONENT) {
+ return &sample_depth_texture;
+ }
+ else if (needLambda) {
+ return &sample_lambda_2d;
+ }
+ else if (t->MinFilter == GL_LINEAR) {
+ return &sample_linear_2d;
+ }
+ else {
+ GLint baseLevel = t->BaseLevel;
+ ASSERT(t->MinFilter == GL_NEAREST);
+ if (t->WrapS == GL_REPEAT &&
+ t->WrapT == GL_REPEAT &&
+ t->_IsPowerOfTwo &&
+ t->Image[0][baseLevel]->Border == 0 &&
+ t->Image[0][baseLevel]->TexFormat->MesaFormat == MESA_FORMAT_RGB) {
+ return &opt_sample_rgb_2d;
+ }
+ else if (t->WrapS == GL_REPEAT &&
+ t->WrapT == GL_REPEAT &&
+ t->_IsPowerOfTwo &&
+ t->Image[0][baseLevel]->Border == 0 &&
+ t->Image[0][baseLevel]->TexFormat->MesaFormat == MESA_FORMAT_RGBA) {
+ return &opt_sample_rgba_2d;
}
else {
- swrast->_MinMagThresh[texUnit] = 0.0F;
+ return &sample_nearest_2d;
}
}
-
- switch (t->Dimensions) {
- case 1:
- if (format == GL_DEPTH_COMPONENT) {
- swrast->TextureSample[texUnit] = sample_depth_texture;
- }
- else if (needLambda) {
- swrast->TextureSample[texUnit] = sample_lambda_1d;
- }
- else if (t->MinFilter == GL_LINEAR) {
- swrast->TextureSample[texUnit] = sample_linear_1d;
- }
- else {
- ASSERT(t->MinFilter == GL_NEAREST);
- swrast->TextureSample[texUnit] = sample_nearest_1d;
- }
- break;
- case 2:
- if (format == GL_DEPTH_COMPONENT) {
- swrast->TextureSample[texUnit] = sample_depth_texture;
- }
- else if (needLambda) {
- swrast->TextureSample[texUnit] = sample_lambda_2d;
- }
- else if (t->MinFilter == GL_LINEAR) {
- swrast->TextureSample[texUnit] = sample_linear_2d;
- }
- else {
- GLint baseLevel = t->BaseLevel;
- ASSERT(t->MinFilter == GL_NEAREST);
- if (t->WrapS == GL_REPEAT &&
- t->WrapT == GL_REPEAT &&
- t->Image[baseLevel]->Border == 0 &&
- t->Image[baseLevel]->TexFormat->MesaFormat == MESA_FORMAT_RGB) {
- swrast->TextureSample[texUnit] = opt_sample_rgb_2d;
- }
- else if (t->WrapS == GL_REPEAT &&
- t->WrapT == GL_REPEAT &&
- t->Image[baseLevel]->Border == 0 &&
- t->Image[baseLevel]->TexFormat->MesaFormat == MESA_FORMAT_RGBA) {
- swrast->TextureSample[texUnit] = opt_sample_rgba_2d;
- }
- else
- swrast->TextureSample[texUnit] = sample_nearest_2d;
- }
- break;
- case 3:
- if (needLambda) {
- swrast->TextureSample[texUnit] = sample_lambda_3d;
- }
- else if (t->MinFilter == GL_LINEAR) {
- swrast->TextureSample[texUnit] = sample_linear_3d;
- }
- else {
- ASSERT(t->MinFilter == GL_NEAREST);
- swrast->TextureSample[texUnit] = sample_nearest_3d;
- }
- break;
- case 6: /* cube map */
- if (needLambda) {
- swrast->TextureSample[texUnit] = sample_lambda_cube;
- }
- else if (t->MinFilter == GL_LINEAR) {
- swrast->TextureSample[texUnit] = sample_linear_cube;
- }
- else {
- ASSERT(t->MinFilter == GL_NEAREST);
- swrast->TextureSample[texUnit] = sample_nearest_cube;
- }
- break;
- default:
- _mesa_problem(ctx, "invalid dimensions in _swrast_choose_texture_sample_func");
+ break;
+ case GL_TEXTURE_3D:
+ if (needLambda) {
+ return &sample_lambda_3d;
+ }
+ else if (t->MinFilter == GL_LINEAR) {
+ return &sample_linear_3d;
+ }
+ else {
+ ASSERT(t->MinFilter == GL_NEAREST);
+ return &sample_nearest_3d;
}
+ break;
+ case GL_TEXTURE_CUBE_MAP:
+ if (needLambda) {
+ return &sample_lambda_cube;
+ }
+ else if (t->MinFilter == GL_LINEAR) {
+ return &sample_linear_cube;
+ }
+ else {
+ ASSERT(t->MinFilter == GL_NEAREST);
+ return &sample_nearest_cube;
+ }
+ break;
+ case GL_TEXTURE_RECTANGLE_NV:
+ if (needLambda) {
+ return &sample_lambda_rect;
+ }
+ else if (t->MinFilter == GL_LINEAR) {
+ return &sample_linear_rect;
+ }
+ else {
+ ASSERT(t->MinFilter == GL_NEAREST);
+ return &sample_nearest_rect;
+ }
+ break;
+ default:
+ _mesa_problem(ctx,
+ "invalid target in _swrast_choose_texture_sample_func");
+ return &null_sample_func;
}
}
#define PROD(A,B) ( (GLuint)(A) * ((GLuint)(B)+1) )
#define S_PROD(A,B) ( (GLint)(A) * ((GLint)(B)+1) )
+
+/**
+ * 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
+ *
+ * \param ctx rendering context
+ * \param textureUnit the texture unit to apply
+ * \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
+ */
static INLINE void
-texture_combine(const GLcontext *ctx,
- const struct gl_texture_unit *textureUnit,
- GLuint n,
- CONST GLchan (*primary_rgba)[4],
- CONST GLchan (*texel)[4],
- GLchan (*rgba)[4])
+texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
+ CONST GLchan (*primary_rgba)[4],
+ CONST GLchan *texelBuffer,
+ GLchan (*rgba)[4] )
{
+ const struct gl_texture_unit *textureUnit = &(ctx->Texture.Unit[unit]);
const GLchan (*argRGB [3])[4];
const GLchan (*argA [3])[4];
- GLuint i, j;
const GLuint RGBshift = textureUnit->CombineScaleShiftRGB;
const GLuint Ashift = textureUnit->CombineScaleShiftA;
#if CHAN_TYPE == GL_FLOAT
const GLchan RGBmult = (GLfloat) (1 << RGBshift);
const GLchan Amult = (GLfloat) (1 << Ashift);
+ static const GLchan one[4] = { 1.0, 1.0, 1.0, 1.0 };
+ static const GLchan zero[4] = { 0.0, 0.0, 0.0, 0.0 };
#else
const GLint half = (CHAN_MAX + 1) / 2;
+ static const GLchan one[4] = { CHAN_MAX, CHAN_MAX, CHAN_MAX, CHAN_MAX };
+ static const GLchan zero[4] = { 0, 0, 0, 0 };
#endif
+ GLuint i, j;
+ GLuint numColorArgs;
+ GLuint numAlphaArgs;
+ /* GLchan ccolor[3][4]; */
DEFMNARRAY(GLchan, ccolor, 3, 3 * MAX_WIDTH, 4); /* mac 32k limitation */
CHECKARRAY(ccolor, return); /* mac 32k limitation */
ASSERT(ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine);
+ ASSERT(SWRAST_CONTEXT(ctx)->_AnyTextureCombine);
+
/*
printf("modeRGB 0x%x modeA 0x%x srcRGB1 0x%x srcA1 0x%x srcRGB2 0x%x srcA2 0x%x\n",
/*
* Do operand setup for up to 3 operands. Loop over the terms.
*/
- for (j = 0; j < 3; j++) {
- switch (textureUnit->CombineSourceA[j]) {
- case GL_TEXTURE:
- argA[j] = texel;
- break;
- case GL_PRIMARY_COLOR_EXT:
- argA[j] = primary_rgba;
- break;
- case GL_PREVIOUS_EXT:
- argA[j] = (const GLchan (*)[4]) rgba;
- break;
- case GL_CONSTANT_EXT:
- {
- GLchan alpha, (*c)[4] = ccolor[j];
- UNCLAMPED_FLOAT_TO_CHAN(alpha, textureUnit->EnvColor[3]);
- for (i = 0; i < n; i++)
- c[i][ACOMP] = alpha;
- argA[j] = (const GLchan (*)[4]) ccolor[j];
- }
- break;
- default:
- _mesa_problem(ctx, "invalid combine source");
- }
+ switch (textureUnit->CombineModeRGB) {
+ case GL_REPLACE:
+ numColorArgs = 1;
+ break;
+ case GL_MODULATE:
+ case GL_ADD:
+ case GL_ADD_SIGNED:
+ case GL_SUBTRACT:
+ case GL_DOT3_RGB:
+ case GL_DOT3_RGBA:
+ case GL_DOT3_RGB_EXT:
+ case GL_DOT3_RGBA_EXT:
+ numColorArgs = 2;
+ break;
+ case GL_INTERPOLATE:
+ case GL_MODULATE_ADD_ATI:
+ case GL_MODULATE_SIGNED_ADD_ATI:
+ case GL_MODULATE_SUBTRACT_ATI:
+ numColorArgs = 3;
+ break;
+ default:
+ numColorArgs = 0;
+ ASSERT(0);
+ break;
+ }
- switch (textureUnit->CombineSourceRGB[j]) {
+ switch (textureUnit->CombineModeA) {
+ case GL_REPLACE:
+ numAlphaArgs = 1;
+ break;
+ case GL_MODULATE:
+ case GL_ADD:
+ case GL_ADD_SIGNED:
+ case GL_SUBTRACT:
+ numAlphaArgs = 2;
+ break;
+ case GL_INTERPOLATE:
+ case GL_MODULATE_ADD_ATI:
+ case GL_MODULATE_SIGNED_ADD_ATI:
+ case GL_MODULATE_SUBTRACT_ATI:
+ numAlphaArgs = 3;
+ break;
+ default:
+ numAlphaArgs = 0;
+ ASSERT(0);
+ break;
+ }
+
+ for (j = 0; j < numColorArgs; j++) {
+ const GLenum srcRGB = textureUnit->CombineSourceRGB[j];
+
+
+ switch (srcRGB) {
case GL_TEXTURE:
- argRGB[j] = texel;
+ argRGB[j] = (const GLchan (*)[4])
+ (texelBuffer + unit * (n * 4 * sizeof(GLchan)));
break;
- case GL_PRIMARY_COLOR_EXT:
+ case GL_PRIMARY_COLOR:
argRGB[j] = primary_rgba;
break;
- case GL_PREVIOUS_EXT:
+ case GL_PREVIOUS:
argRGB[j] = (const GLchan (*)[4]) rgba;
break;
- case GL_CONSTANT_EXT:
+ case GL_CONSTANT:
{
GLchan (*c)[4] = ccolor[j];
GLchan red, green, blue, alpha;
argRGB[j] = (const GLchan (*)[4]) ccolor[j];
}
break;
+ /* GL_ATI_texture_env_combine3 allows GL_ZERO & GL_ONE as sources.
+ */
+ case GL_ZERO:
+ argRGB[j] = & zero;
+ break;
+ case GL_ONE:
+ argRGB[j] = & one;
+ break;
default:
- _mesa_problem(ctx, "invalid combine source");
+ /* ARB_texture_env_crossbar source */
+ {
+ const GLuint srcUnit = srcRGB - GL_TEXTURE0;
+ ASSERT(srcUnit < ctx->Const.MaxTextureUnits);
+ if (!ctx->Texture.Unit[srcUnit]._ReallyEnabled)
+ return;
+ argRGB[j] = (const GLchan (*)[4])
+ (texelBuffer + srcUnit * (n * 4 * sizeof(GLchan)));
+ }
}
if (textureUnit->CombineOperandRGB[j] != GL_SRC_COLOR) {
}
}
}
+ }
+
+
+ for (j = 0; j < numAlphaArgs; j++) {
+ const GLenum srcA = textureUnit->CombineSourceA[j];
+
+ switch (srcA) {
+ case GL_TEXTURE:
+ argA[j] = (const GLchan (*)[4])
+ (texelBuffer + unit * (n * 4 * sizeof(GLchan)));
+ break;
+ case GL_PRIMARY_COLOR:
+ argA[j] = primary_rgba;
+ break;
+ case GL_PREVIOUS:
+ argA[j] = (const GLchan (*)[4]) rgba;
+ break;
+ case GL_CONSTANT:
+ {
+ GLchan alpha, (*c)[4] = ccolor[j];
+ UNCLAMPED_FLOAT_TO_CHAN(alpha, textureUnit->EnvColor[3]);
+ for (i = 0; i < n; i++)
+ c[i][ACOMP] = alpha;
+ argA[j] = (const GLchan (*)[4]) ccolor[j];
+ }
+ break;
+ /* GL_ATI_texture_env_combine3 allows GL_ZERO & GL_ONE as sources.
+ */
+ case GL_ZERO:
+ argA[j] = & zero;
+ break;
+ case GL_ONE:
+ argA[j] = & one;
+ break;
+ default:
+ /* ARB_texture_env_crossbar source */
+ {
+ const GLuint srcUnit = srcA - GL_TEXTURE0;
+ ASSERT(srcUnit < ctx->Const.MaxTextureUnits);
+ if (!ctx->Texture.Unit[srcUnit]._ReallyEnabled)
+ return;
+ argA[j] = (const GLchan (*)[4])
+ (texelBuffer + srcUnit * (n * 4 * sizeof(GLchan)));
+ }
+ }
if (textureUnit->CombineOperandA[j] == GL_ONE_MINUS_SRC_ALPHA) {
const GLchan (*src)[4] = argA[j];
dst[i][ACOMP] = CHAN_MAX - src[i][ACOMP];
}
}
-
- if (textureUnit->CombineModeRGB == GL_REPLACE &&
- textureUnit->CombineModeA == GL_REPLACE) {
- break; /* done, we need only arg0 */
- }
-
- if (j == 1 &&
- textureUnit->CombineModeRGB != GL_INTERPOLATE_EXT &&
- textureUnit->CombineModeA != GL_INTERPOLATE_EXT) {
- break; /* arg0 and arg1 are done. we don't need arg2. */
- }
}
/*
}
}
break;
- case GL_ADD_SIGNED_EXT:
+ case GL_ADD_SIGNED:
{
const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
}
}
break;
- case GL_INTERPOLATE_EXT:
+ case GL_INTERPOLATE:
{
const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
}
}
break;
- case GL_SUBTRACT_ARB:
+ case GL_SUBTRACT:
{
const GLchan (*arg0)[4] = (const GLchan (*)[4]) argRGB[0];
const GLchan (*arg1)[4] = (const GLchan (*)[4]) argRGB[1];
(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) +
(GLint)arg1[i][GCOMP] - half) +
S_PROD((GLint)arg0[i][BCOMP] - half,
(GLint)arg1[i][BCOMP] - half)) >> 6;
-#endif
dot = CLAMP(dot, 0, CHAN_MAX);
+#endif
rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = (GLchan) dot;
}
}
break;
- case GL_DOT3_RGB_ARB:
- case GL_DOT3_RGBA_ARB:
+ 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];
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;
+ * 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) +
(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
- dot = CLAMP(dot, 0, CHAN_MAX) << RGBshift;
rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = (GLchan) 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
+ }
+ }
+ 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
+ }
+ }
+ 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
+ }
+ }
+ break;
default:
_mesa_problem(ctx, "invalid combine mode");
}
}
}
break;
- case GL_ADD_SIGNED_EXT:
+ case GL_ADD_SIGNED:
{
const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
}
}
break;
- case GL_INTERPOLATE_EXT:
+ case GL_INTERPOLATE:
{
const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
}
}
break;
- case GL_SUBTRACT_ARB:
+ case GL_SUBTRACT:
{
const GLchan (*arg0)[4] = (const GLchan (*)[4]) argA[0];
const GLchan (*arg1)[4] = (const GLchan (*)[4]) argA[1];
}
}
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
+ }
+ }
+ 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
+ }
+ }
+ 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
+ }
+ }
+ break;
default:
_mesa_problem(ctx, "invalid combine mode");
}
* GL_DOT3.
*/
if (textureUnit->CombineModeRGB == GL_DOT3_RGBA_EXT ||
- textureUnit->CombineModeRGB == GL_DOT3_RGBA_ARB) {
+ textureUnit->CombineModeRGB == GL_DOT3_RGBA) {
for (i = 0; i < n; i++) {
rgba[i][ACOMP] = rgba[i][RCOMP];
}
#undef PROD
+/**
+ * Implement NVIDIA's GL_NV_texture_env_combine4 extension when
+ * texUnit->EnvMode == GL_COMBINE4_NV.
+ */
+static INLINE void
+texture_combine4( const GLcontext *ctx, GLuint unit, GLuint n,
+ CONST GLchan (*primary_rgba)[4],
+ CONST GLchan *texelBuffer,
+ GLchan (*rgba)[4] )
+{
+}
-/**********************************************************************/
-/* Texture Application */
-/**********************************************************************/
-/*
- * Combine incoming fragment color with texel color to produce output color.
+/**
+ * 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
* according to the texture environment mode.
*/
static void
-apply_texture( const GLcontext *ctx,
+texture_apply( const GLcontext *ctx,
const struct gl_texture_unit *texUnit,
GLuint n,
CONST GLchan primary_rgba[][4], CONST GLchan texel[][4],
ASSERT(texUnit->_Current);
baseLevel = texUnit->_Current->BaseLevel;
- ASSERT(texUnit->_Current->Image[baseLevel]);
+ ASSERT(texUnit->_Current->Image[0][baseLevel]);
- format = texUnit->_Current->Image[baseLevel]->Format;
+ format = texUnit->_Current->Image[0][baseLevel]->Format;
- if (format == GL_COLOR_INDEX || format == GL_DEPTH_COMPONENT) {
+ if (format == GL_COLOR_INDEX || format == GL_YCBCR_MESA) {
format = GL_RGBA; /* a bit of a hack */
}
+ else if (format == GL_DEPTH_COMPONENT) {
+ format = texUnit->_Current->DepthMode;
+ }
switch (texUnit->EnvMode) {
case GL_REPLACE:
}
break;
default:
- _mesa_problem(ctx, "Bad format (GL_REPLACE) in apply_texture");
+ _mesa_problem(ctx, "Bad format (GL_REPLACE) in texture_apply");
return;
}
break;
}
break;
default:
- _mesa_problem(ctx, "Bad format (GL_MODULATE) in apply_texture");
+ _mesa_problem(ctx, "Bad format (GL_MODULATE) in texture_apply");
return;
}
break;
}
break;
default:
- _mesa_problem(ctx, "Bad format (GL_DECAL) in apply_texture");
+ _mesa_problem(ctx, "Bad format (GL_DECAL) in texture_apply");
return;
}
break;
}
break;
default:
- _mesa_problem(ctx, "Bad format (GL_BLEND) in apply_texture");
+ _mesa_problem(ctx, "Bad format (GL_BLEND) in texture_apply");
return;
}
break;
}
break;
default:
- _mesa_problem(ctx, "Bad format (GL_ADD) in apply_texture");
+ _mesa_problem(ctx, "Bad format (GL_ADD) in texture_apply");
return;
}
break;
- case GL_COMBINE_EXT:
- texture_combine(ctx, texUnit, n, primary_rgba, texel, rgba);
- break;
-
default:
- _mesa_problem(ctx, "Bad env mode in apply_texture");
+ _mesa_problem(ctx, "Bad env mode in texture_apply");
return;
}
}
-/*
- * Apply a unit of texture mapping to the incoming fragments.
+/**
+ * Apply texture mapping to a span of fragments.
*/
void
-_swrast_texture_fragments( GLcontext *ctx, GLuint texUnit,
- struct sw_span *span,
- CONST GLchan primary_rgba[][4])
+_swrast_texture_span( GLcontext *ctx, struct sw_span *span )
{
- const GLuint mask = TEXTURE0_ANY << (texUnit * 4);
- GLfloat (*texcoords)[4] = span->texcoords[texUnit];
- GLfloat *lambda = span->lambda[texUnit];
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ GLchan primary_rgba[MAX_WIDTH][4];
+ GLuint unit;
+ ASSERT(span->end < MAX_WIDTH);
+ ASSERT(span->arrayMask & SPAN_TEXTURE);
- if (ctx->Texture._ReallyEnabled & mask) {
- const struct gl_texture_unit *textureUnit = &ctx->Texture.Unit[texUnit];
+ /*
+ * 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));
- ASSERT(span->arrayMask & SPAN_TEXTURE);
-
- if (textureUnit->_Current) { /* XXX need this? */
- const struct gl_texture_object *curObj = textureUnit->_Current;
- GLchan texel[MAX_WIDTH][4];
-
- if (span->arrayMask | SPAN_LAMBDA) {
-#if 0
- float min, max;
- int i;
- min = max = lambda[0];
- for (i = 1; i < span->end; i++) {
- if (lambda[i] > max)
- max = lambda[i];
- if (lambda[i] < min)
- min = lambda[i];
- }
- printf("min/max %g / %g\n", min, max);
-#endif
- if (textureUnit->LodBias != 0.0F) {
+ /*
+ * Must do all texture sampling before combining in order to
+ * accomodate GL_ARB_texture_env_crossbar.
+ */
+ for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
+ if (ctx->Texture.Unit[unit]._ReallyEnabled) {
+ 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)));
+
+ /* adjust texture lod (lambda) */
+ if (span->arrayMask & SPAN_LAMBDA) {
+ if (texUnit->LodBias + curObj->LodBias != 0.0F) {
/* apply LOD bias, but don't clamp yet */
+ const GLfloat bias = CLAMP(texUnit->LodBias + curObj->LodBias,
+ -ctx->Const.MaxTextureLodBias,
+ ctx->Const.MaxTextureLodBias);
GLuint i;
- for (i=0;i<span->end;i++) {
- lambda[i] += textureUnit->LodBias;
+ for (i = 0; i < span->end; i++) {
+ lambda[i] += bias;
}
}
const GLfloat min = curObj->MinLod;
const GLfloat max = curObj->MaxLod;
GLuint i;
- for (i=0;i<span->end;i++) {
+ for (i = 0; i < span->end; i++) {
GLfloat l = lambda[i];
lambda[i] = CLAMP(l, min, max);
}
}
}
- /* Sample the texture for n fragments */
- SWRAST_CONTEXT(ctx)->TextureSample[texUnit]( ctx, texUnit,
- textureUnit->_Current,
- span->end, texcoords,
- lambda, texel );
+ /* Sample the texture (span->end fragments) */
+ swrast->TextureSample[unit]( ctx, unit, texUnit->_Current, span->end,
+ (const GLfloat (*)[4]) span->array->texcoords[unit],
+ lambda, texels );
- apply_texture( ctx, textureUnit, span->end, primary_rgba,
- (const GLchan (*)[4]) texel, span->color.rgba );
+ /* GL_SGI_texture_color_table */
+ if (texUnit->ColorTableEnabled) {
+ _swrast_texture_table_lookup(&texUnit->ColorTable, span->end, texels);
+ }
}
}
-}
-
-
-/*
- * Apply multiple texture stages (or just unit 0) to the span.
- * At some point in the future we'll probably modify this so that
- * texels from any texture unit are available in any combiner unit.
- * That'll require doing all the texture sampling first, and then
- * all the application (blending) afterward.
- */
-void
-_swrast_multitexture_fragments( GLcontext *ctx, struct sw_span *span )
-{
- if (ctx->Texture._ReallyEnabled & ~TEXTURE0_ANY) {
- /* multitexture */
- GLchan primary_rgba[MAX_WIDTH][4];
- GLuint unit;
-
- ASSERT(span->end < MAX_WIDTH);
- ASSERT(span->arrayMask & SPAN_TEXTURE);
-
- /* save copy of the span colors (the GL_PRIMARY_COLOR) */
- MEMCPY(primary_rgba, span->color.rgba, 4 * span->end * sizeof(GLchan));
- /* loop over texture units, modifying the span->color.rgba values */
- for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
- if (ctx->Texture.Unit[unit]._ReallyEnabled) {
- _swrast_texture_fragments( ctx, unit, span,
- (CONST GLchan (*)[4]) primary_rgba);
+ /*
+ * 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->EnvMode == GL_COMBINE) {
+ /* GL_ARB/EXT_texture_env_combine */
+ texture_combine( ctx, unit, span->end,
+ (CONST GLchan (*)[4]) primary_rgba,
+ swrast->TexelBuffer,
+ span->array->rgba );
+ }
+ else if (texUnit->EnvMode == GL_COMBINE4_NV) {
+ /* GL_NV_texture_env_combine4 */
+ texture_combine4( 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 );
}
}
}
- else {
- /* Just unit 0 enabled */
- ASSERT(ctx->Texture._ReallyEnabled & TEXTURE0_ANY);
-
- _swrast_texture_fragments( ctx, 0, span,
- (CONST GLchan (*)[4]) span->color.rgba);
- }
}
projects / mesa.git / blobdiff