summaryrefslogtreecommitdiffstats
path: root/src/mesa/main/texcompress_fxt1.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/main/texcompress_fxt1.c')
-rw-r--r--src/mesa/main/texcompress_fxt1.c198
1 files changed, 121 insertions, 77 deletions
diff --git a/src/mesa/main/texcompress_fxt1.c b/src/mesa/main/texcompress_fxt1.c
index d5e2c790f60..019687bec5f 100644
--- a/src/mesa/main/texcompress_fxt1.c
+++ b/src/mesa/main/texcompress_fxt1.c
@@ -1,8 +1,8 @@
/*
* Mesa 3-D graphics library
- * Version: 6.1
+ * Version: 6.5
*
- * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2005 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"),
@@ -40,14 +40,14 @@
#include "texstore.h"
-static GLint
+static void
fxt1_encode (GLuint width, GLuint height, GLint comps,
const void *source, GLint srcRowStride,
void *dest, GLint destRowStride);
-void
+static void
fxt1_decode_1 (const void *texture, GLint stride,
- GLint i, GLint j, GLubyte *rgba);
+ GLint i, GLint j, GLchan *rgba);
/**
@@ -1346,7 +1346,7 @@ fxt1_quantize (GLuint *cc, const GLubyte *lines[], GLint comps)
}
-static GLint
+static void
fxt1_encode (GLuint width, GLuint height, GLint comps,
const void *source, GLint srcRowStride,
void *dest, GLint destRowStride)
@@ -1354,23 +1354,50 @@ fxt1_encode (GLuint width, GLuint height, GLint comps,
GLuint x, y;
const GLubyte *data;
GLuint *encoded = (GLuint *)dest;
- GLubyte *newSource = NULL;
+ void *newSource = NULL;
+
+ assert(comps == 3 || comps == 4);
/* Replicate image if width is not M8 or height is not M4 */
if ((width & 7) | (height & 3)) {
GLint newWidth = (width + 7) & ~7;
GLint newHeight = (height + 3) & ~3;
- newSource = (GLubyte *)
- _mesa_malloc(comps * newWidth * newHeight * sizeof(GLubyte *));
+ newSource = _mesa_malloc(comps * newWidth * newHeight * sizeof(GLchan));
+ if (!newSource) {
+ GET_CURRENT_CONTEXT(ctx);
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture compression");
+ goto cleanUp;
+ }
_mesa_upscale_teximage2d(width, height, newWidth, newHeight,
comps, (const GLchan *) source,
- srcRowStride, newSource);
+ srcRowStride, (GLchan *) newSource);
source = newSource;
width = newWidth;
height = newHeight;
srcRowStride = comps * newWidth;
}
+ /* convert from 16/32-bit channels to GLubyte if needed */
+ if (CHAN_TYPE != GL_UNSIGNED_BYTE) {
+ const GLuint n = width * height * comps;
+ const GLchan *src = (const GLchan *) source;
+ GLubyte *dest = (GLubyte *) _mesa_malloc(n * sizeof(GLubyte));
+ GLuint i;
+ if (!dest) {
+ GET_CURRENT_CONTEXT(ctx);
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture compression");
+ goto cleanUp;
+ }
+ for (i = 0; i < n; i++) {
+ dest[i] = CHAN_TO_UBYTE(src[i]);
+ }
+ if (newSource != NULL) {
+ _mesa_free(newSource);
+ }
+ newSource = dest; /* we'll free this buffer before returning */
+ source = dest; /* the new, GLubyte incoming image */
+ }
+
data = (const GLubyte *) source;
destRowStride = (destRowStride - width * 2) / 4;
for (y = 0; y < height; y += 4) {
@@ -1389,11 +1416,10 @@ fxt1_encode (GLuint width, GLuint height, GLint comps,
encoded += destRowStride;
}
+ cleanUp:
if (newSource != NULL) {
_mesa_free(newSource);
}
-
- return 0;
}
@@ -1430,11 +1456,10 @@ static const GLubyte _rgb_scale_6[] = {
#define UP5(c) _rgb_scale_5[(c) & 31]
#define UP6(c, b) _rgb_scale_6[(((c) & 31) << 1) | ((b) & 1)]
#define LERP(n, t, c0, c1) (((n) - (t)) * (c0) + (t) * (c1) + (n) / 2) / (n)
-#define ZERO_4UBV(v) *((GLuint *)(v)) = 0
static void
-fxt1_decode_1HI (const GLubyte *code, GLint t, GLubyte *rgba)
+fxt1_decode_1HI (const GLubyte *code, GLint t, GLchan *rgba)
{
const GLuint *cc;
@@ -1443,29 +1468,33 @@ fxt1_decode_1HI (const GLubyte *code, GLint t, GLubyte *rgba)
t = (cc[0] >> (t & 7)) & 7;
if (t == 7) {
- ZERO_4UBV(rgba);
+ rgba[RCOMP] = rgba[GCOMP] = rgba[BCOMP] = rgba[ACOMP] = 0;
} else {
+ GLubyte r, g, b;
cc = (const GLuint *)(code + 12);
if (t == 0) {
- rgba[BCOMP] = UP5(CC_SEL(cc, 0));
- rgba[GCOMP] = UP5(CC_SEL(cc, 5));
- rgba[RCOMP] = UP5(CC_SEL(cc, 10));
+ b = UP5(CC_SEL(cc, 0));
+ g = UP5(CC_SEL(cc, 5));
+ r = UP5(CC_SEL(cc, 10));
} else if (t == 6) {
- rgba[BCOMP] = UP5(CC_SEL(cc, 15));
- rgba[GCOMP] = UP5(CC_SEL(cc, 20));
- rgba[RCOMP] = UP5(CC_SEL(cc, 25));
+ b = UP5(CC_SEL(cc, 15));
+ g = UP5(CC_SEL(cc, 20));
+ r = UP5(CC_SEL(cc, 25));
} else {
- rgba[BCOMP] = LERP(6, t, UP5(CC_SEL(cc, 0)), UP5(CC_SEL(cc, 15)));
- rgba[GCOMP] = LERP(6, t, UP5(CC_SEL(cc, 5)), UP5(CC_SEL(cc, 20)));
- rgba[RCOMP] = LERP(6, t, UP5(CC_SEL(cc, 10)), UP5(CC_SEL(cc, 25)));
- }
- rgba[ACOMP] = 255;
+ b = LERP(6, t, UP5(CC_SEL(cc, 0)), UP5(CC_SEL(cc, 15)));
+ g = LERP(6, t, UP5(CC_SEL(cc, 5)), UP5(CC_SEL(cc, 20)));
+ r = LERP(6, t, UP5(CC_SEL(cc, 10)), UP5(CC_SEL(cc, 25)));
+ }
+ rgba[RCOMP] = UBYTE_TO_CHAN(r);
+ rgba[GCOMP] = UBYTE_TO_CHAN(g);
+ rgba[BCOMP] = UBYTE_TO_CHAN(b);
+ rgba[ACOMP] = CHAN_MAX;
}
}
static void
-fxt1_decode_1CHROMA (const GLubyte *code, GLint t, GLubyte *rgba)
+fxt1_decode_1CHROMA (const GLubyte *code, GLint t, GLchan *rgba)
{
const GLuint *cc;
GLuint kk;
@@ -1480,15 +1509,15 @@ fxt1_decode_1CHROMA (const GLubyte *code, GLint t, GLubyte *rgba)
t *= 15;
cc = (const GLuint *)(code + 8 + t / 8);
kk = cc[0] >> (t & 7);
- rgba[BCOMP] = UP5(kk);
- rgba[GCOMP] = UP5(kk >> 5);
- rgba[RCOMP] = UP5(kk >> 10);
- rgba[ACOMP] = 255;
+ rgba[BCOMP] = UBYTE_TO_CHAN( UP5(kk) );
+ rgba[GCOMP] = UBYTE_TO_CHAN( UP5(kk >> 5) );
+ rgba[RCOMP] = UBYTE_TO_CHAN( UP5(kk >> 10) );
+ rgba[ACOMP] = CHAN_MAX;
}
static void
-fxt1_decode_1MIXED (const GLubyte *code, GLint t, GLubyte *rgba)
+fxt1_decode_1MIXED (const GLubyte *code, GLint t, GLchan *rgba)
{
const GLuint *cc;
GLuint col[2][3];
@@ -1526,49 +1555,58 @@ fxt1_decode_1MIXED (const GLubyte *code, GLint t, GLubyte *rgba)
/* alpha[0] == 1 */
if (t == 3) {
- ZERO_4UBV(rgba);
+ /* zero */
+ rgba[RCOMP] = rgba[BCOMP] = rgba[GCOMP] = rgba[ACOMP] = 0;
} else {
+ GLubyte r, g, b;
if (t == 0) {
- rgba[BCOMP] = UP5(col[0][BCOMP]);
- rgba[GCOMP] = UP5(col[0][GCOMP]);
- rgba[RCOMP] = UP5(col[0][RCOMP]);
+ b = UP5(col[0][BCOMP]);
+ g = UP5(col[0][GCOMP]);
+ r = UP5(col[0][RCOMP]);
} else if (t == 2) {
- rgba[BCOMP] = UP5(col[1][BCOMP]);
- rgba[GCOMP] = UP6(col[1][GCOMP], glsb);
- rgba[RCOMP] = UP5(col[1][RCOMP]);
+ b = UP5(col[1][BCOMP]);
+ g = UP6(col[1][GCOMP], glsb);
+ r = UP5(col[1][RCOMP]);
} else {
- rgba[BCOMP] = (UP5(col[0][BCOMP]) + UP5(col[1][BCOMP])) / 2;
- rgba[GCOMP] = (UP5(col[0][GCOMP]) + UP6(col[1][GCOMP], glsb)) / 2;
- rgba[RCOMP] = (UP5(col[0][RCOMP]) + UP5(col[1][RCOMP])) / 2;
+ b = (UP5(col[0][BCOMP]) + UP5(col[1][BCOMP])) / 2;
+ g = (UP5(col[0][GCOMP]) + UP6(col[1][GCOMP], glsb)) / 2;
+ r = (UP5(col[0][RCOMP]) + UP5(col[1][RCOMP])) / 2;
}
- rgba[ACOMP] = 255;
+ rgba[RCOMP] = UBYTE_TO_CHAN(r);
+ rgba[GCOMP] = UBYTE_TO_CHAN(g);
+ rgba[BCOMP] = UBYTE_TO_CHAN(b);
+ rgba[ACOMP] = CHAN_MAX;
}
} else {
/* alpha[0] == 0 */
-
+ GLubyte r, g, b;
if (t == 0) {
- rgba[BCOMP] = UP5(col[0][BCOMP]);
- rgba[GCOMP] = UP6(col[0][GCOMP], glsb ^ selb);
- rgba[RCOMP] = UP5(col[0][RCOMP]);
+ b = UP5(col[0][BCOMP]);
+ g = UP6(col[0][GCOMP], glsb ^ selb);
+ r = UP5(col[0][RCOMP]);
} else if (t == 3) {
- rgba[BCOMP] = UP5(col[1][BCOMP]);
- rgba[GCOMP] = UP6(col[1][GCOMP], glsb);
- rgba[RCOMP] = UP5(col[1][RCOMP]);
+ b = UP5(col[1][BCOMP]);
+ g = UP6(col[1][GCOMP], glsb);
+ r = UP5(col[1][RCOMP]);
} else {
- rgba[BCOMP] = LERP(3, t, UP5(col[0][BCOMP]), UP5(col[1][BCOMP]));
- rgba[GCOMP] = LERP(3, t, UP6(col[0][GCOMP], glsb ^ selb),
- UP6(col[1][GCOMP], glsb));
- rgba[RCOMP] = LERP(3, t, UP5(col[0][RCOMP]), UP5(col[1][RCOMP]));
- }
- rgba[ACOMP] = 255;
+ b = LERP(3, t, UP5(col[0][BCOMP]), UP5(col[1][BCOMP]));
+ g = LERP(3, t, UP6(col[0][GCOMP], glsb ^ selb),
+ UP6(col[1][GCOMP], glsb));
+ r = LERP(3, t, UP5(col[0][RCOMP]), UP5(col[1][RCOMP]));
+ }
+ rgba[RCOMP] = UBYTE_TO_CHAN(r);
+ rgba[GCOMP] = UBYTE_TO_CHAN(g);
+ rgba[BCOMP] = UBYTE_TO_CHAN(b);
+ rgba[ACOMP] = CHAN_MAX;
}
}
static void
-fxt1_decode_1ALPHA (const GLubyte *code, GLint t, GLubyte *rgba)
+fxt1_decode_1ALPHA (const GLubyte *code, GLint t, GLchan *rgba)
{
const GLuint *cc;
+ GLubyte r, g, b, a;
cc = (const GLuint *)code;
if (CC_SEL(cc, 124) & 1) {
@@ -1593,20 +1631,20 @@ fxt1_decode_1ALPHA (const GLubyte *code, GLint t, GLubyte *rgba)
}
if (t == 0) {
- rgba[BCOMP] = UP5(col0[BCOMP]);
- rgba[GCOMP] = UP5(col0[GCOMP]);
- rgba[RCOMP] = UP5(col0[RCOMP]);
- rgba[ACOMP] = UP5(col0[ACOMP]);
+ b = UP5(col0[BCOMP]);
+ g = UP5(col0[GCOMP]);
+ r = UP5(col0[RCOMP]);
+ a = UP5(col0[ACOMP]);
} else if (t == 3) {
- rgba[BCOMP] = UP5(CC_SEL(cc, 79));
- rgba[GCOMP] = UP5(CC_SEL(cc, 84));
- rgba[RCOMP] = UP5(CC_SEL(cc, 89));
- rgba[ACOMP] = UP5(CC_SEL(cc, 114));
+ b = UP5(CC_SEL(cc, 79));
+ g = UP5(CC_SEL(cc, 84));
+ r = UP5(CC_SEL(cc, 89));
+ a = UP5(CC_SEL(cc, 114));
} else {
- rgba[BCOMP] = LERP(3, t, UP5(col0[BCOMP]), UP5(CC_SEL(cc, 79)));
- rgba[GCOMP] = LERP(3, t, UP5(col0[GCOMP]), UP5(CC_SEL(cc, 84)));
- rgba[RCOMP] = LERP(3, t, UP5(col0[RCOMP]), UP5(CC_SEL(cc, 89)));
- rgba[ACOMP] = LERP(3, t, UP5(col0[ACOMP]), UP5(CC_SEL(cc, 114)));
+ b = LERP(3, t, UP5(col0[BCOMP]), UP5(CC_SEL(cc, 79)));
+ g = LERP(3, t, UP5(col0[GCOMP]), UP5(CC_SEL(cc, 84)));
+ r = LERP(3, t, UP5(col0[RCOMP]), UP5(CC_SEL(cc, 89)));
+ a = LERP(3, t, UP5(col0[ACOMP]), UP5(CC_SEL(cc, 114)));
}
} else {
/* lerp == 0 */
@@ -1618,27 +1656,33 @@ fxt1_decode_1ALPHA (const GLubyte *code, GLint t, GLubyte *rgba)
t = (cc[0] >> (t * 2)) & 3;
if (t == 3) {
- ZERO_4UBV(rgba);
+ /* zero */
+ r = g = b = 0;
} else {
GLuint kk;
+ GLubyte r, g, b, a;
cc = (const GLuint *)code;
- rgba[ACOMP] = UP5(cc[3] >> (t * 5 + 13));
+ a = UP5(cc[3] >> (t * 5 + 13));
t *= 15;
cc = (const GLuint *)(code + 8 + t / 8);
kk = cc[0] >> (t & 7);
- rgba[BCOMP] = UP5(kk);
- rgba[GCOMP] = UP5(kk >> 5);
- rgba[RCOMP] = UP5(kk >> 10);
+ b = UP5(kk);
+ g = UP5(kk >> 5);
+ r = UP5(kk >> 10);
}
}
+ rgba[RCOMP] = UBYTE_TO_CHAN(r);
+ rgba[GCOMP] = UBYTE_TO_CHAN(g);
+ rgba[BCOMP] = UBYTE_TO_CHAN(b);
+ rgba[ACOMP] = UBYTE_TO_CHAN(a);
}
-void
+static void
fxt1_decode_1 (const void *texture, GLint stride, /* in pixels */
- GLint i, GLint j, GLubyte *rgba)
+ GLint i, GLint j, GLchan *rgba)
{
- static void (*decode_1[]) (const GLubyte *, GLint, GLubyte *) = {
+ static void (*decode_1[]) (const GLubyte *, GLint, GLchan *) = {
fxt1_decode_1HI, /* cc-high = "00?" */
fxt1_decode_1HI, /* cc-high = "00?" */
fxt1_decode_1CHROMA, /* cc-chroma = "010" */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 10:44:03 +0000