/*
* Mesa 3-D graphics library
- * Version: 6.1
+ * Version: 7.1
*
- * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2008 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 "convolve.h"
#include "image.h"
+#include "mipmap.h"
#include "texcompress.h"
#include "texformat.h"
#include "texstore.h"
-int
-fxt1_encode (GLcontext *ctx,
- unsigned int width, unsigned int height,
- int srcFormat,
- const void *source, int srcRowStride,
- void *dest, int destRowStride);
+static void
+fxt1_encode (GLuint width, GLuint height, GLint comps,
+ const void *source, GLint srcRowStride,
+ void *dest, GLint destRowStride);
+
void
-fxt1_decode_1 (const void *texture, int width,
- int i, int j, unsigned char *rgba);
+fxt1_decode_1 (const void *texture, GLint stride,
+ GLint i, GLint j, GLchan *rgba);
/**
* Called via TexFormat->StoreImage to store an RGB_FXT1 texture.
*/
static GLboolean
-texstore_rgb_fxt1(STORE_PARAMS)
+texstore_rgb_fxt1(TEXSTORE_PARAMS)
{
const GLchan *pixels;
GLint srcRowStride;
ASSERT(dstXoffset % 8 == 0);
ASSERT(dstYoffset % 4 == 0);
ASSERT(dstZoffset == 0);
- (void) dstZoffset; (void) dstImageStride;
+ (void) dstZoffset;
+ (void) dstImageOffsets;
if (srcFormat != GL_RGB ||
srcType != CHAN_TYPE ||
}
dst = _mesa_compressed_image_address(dstXoffset, dstYoffset, 0,
- GL_COMPRESSED_RGB_FXT1_3DFX,
+ dstFormat->MesaFormat,
texWidth, (GLubyte *) dstAddr);
- fxt1_encode(ctx, srcWidth, srcHeight, srcFormat, pixels, srcRowStride,
+ fxt1_encode(srcWidth, srcHeight, 3, pixels, srcRowStride,
dst, dstRowStride);
if (tempImage)
* Called via TexFormat->StoreImage to store an RGBA_FXT1 texture.
*/
static GLboolean
-texstore_rgba_fxt1(STORE_PARAMS)
+texstore_rgba_fxt1(TEXSTORE_PARAMS)
{
const GLchan *pixels;
GLint srcRowStride;
ASSERT(dstXoffset % 8 == 0);
ASSERT(dstYoffset % 4 == 0);
ASSERT(dstZoffset == 0);
- (void) dstZoffset; (void) dstImageStride;
+ (void) dstZoffset;
+ (void) dstImageOffsets;
if (srcFormat != GL_RGBA ||
srcType != CHAN_TYPE ||
}
dst = _mesa_compressed_image_address(dstXoffset, dstYoffset, 0,
- GL_COMPRESSED_RGBA_FXT1_3DFX,
+ dstFormat->MesaFormat,
texWidth, (GLubyte *) dstAddr);
- fxt1_encode(ctx, srcWidth, srcHeight, srcFormat, pixels, srcRowStride,
+ fxt1_encode(srcWidth, srcHeight, 4, pixels, srcRowStride,
dst, dstRowStride);
if (tempImage)
texel[RCOMP] = CHAN_TO_FLOAT(rgba[RCOMP]);
texel[GCOMP] = CHAN_TO_FLOAT(rgba[GCOMP]);
texel[BCOMP] = CHAN_TO_FLOAT(rgba[BCOMP]);
- texel[ACOMP] = 1.0;
+ texel[ACOMP] = 1.0F;
}
0, /* IntensityBits */
0, /* IndexBits */
0, /* DepthBits */
+ 0, /* StencilBits */
0, /* TexelBytes */
texstore_rgb_fxt1, /* StoreTexImageFunc */
NULL, /*impossible*/ /* FetchTexel1D */
NULL, /*impossible*/ /* FetchTexel1Df */
fetch_texel_2d_f_rgb_fxt1, /* FetchTexel2Df */
NULL, /*impossible*/ /* FetchTexel3Df */
+ NULL /* StoreTexel */
};
const struct gl_texture_format _mesa_texformat_rgba_fxt1 = {
0, /* IntensityBits */
0, /* IndexBits */
0, /* DepthBits */
+ 0, /* StencilBits */
0, /* TexelBytes */
texstore_rgba_fxt1, /* StoreTexImageFunc */
NULL, /*impossible*/ /* FetchTexel1D */
NULL, /*impossible*/ /* FetchTexel1Df */
fetch_texel_2d_f_rgba_fxt1, /* FetchTexel2Df */
NULL, /*impossible*/ /* FetchTexel3Df */
+ NULL /* StoreTexel */
};
*
* The encoder was built by reversing the decoder,
* and is vaguely based on Texus2 by 3dfx. Note that this code
- * is merely a proof of concept, since it is higly UNoptimized;
- * moreover, it is sub-optimal due to inital conditions passed
- * to Lloyd's algorithm (the interpolation modes are worse).
+ * is merely a proof of concept, since it is highly UNoptimized;
+ * moreover, it is sub-optimal due to initial conditions passed
+ * to Lloyd's algorithm (the interpolation modes are even worse).
\***************************************************************************/
#define LL_RMS_D 10 /* fault tolerance (maximum delta) */
#define LL_RMS_E 255 /* fault tolerance (maximum error) */
#define ALPHA_TS 2 /* alpha threshold: (255 - ALPHA_TS) deemed opaque */
-#define ISTBLACK(v) (*((unsigned long *)(v)) == 0)
+#define ISTBLACK(v) (*((GLuint *)(v)) == 0)
-#ifdef __GNUC__
+/*
+ * Define a 64-bit unsigned integer type and macros
+ */
+#if 1
#define FX64_NATIVE 1
-typedef unsigned long long Fx64;
+typedef uint64_t Fx64;
#define FX64_MOV32(a, b) a = b
#define FX64_OR32(a, b) a |= b
#define FX64_SHL(a, c) a <<= c
-#else /* !__GNUC__ */
+#else
#define FX64_NATIVE 0
typedef struct {
- unsigned long lo, hi;
+ GLuint lo, hi;
} Fx64;
#define FX64_MOV32(a, b) a.lo = b
} \
} while (0)
-#endif /* !__GNUC__ */
+#endif
-static int
-fxt1_bestcol (float vec[][MAX_COMP], int nv,
- unsigned char input[MAX_COMP], int nc)
+#define F(i) (GLfloat)1 /* can be used to obtain an oblong metric: 0.30 / 0.59 / 0.11 */
+#define SAFECDOT 1 /* for paranoids */
+
+#define MAKEIVEC(NV, NC, IV, B, V0, V1) \
+ do { \
+ /* compute interpolation vector */ \
+ GLfloat d2 = 0.0F; \
+ GLfloat rd2; \
+ \
+ for (i = 0; i < NC; i++) { \
+ IV[i] = (V1[i] - V0[i]) * F(i); \
+ d2 += IV[i] * IV[i]; \
+ } \
+ rd2 = (GLfloat)NV / d2; \
+ B = 0; \
+ for (i = 0; i < NC; i++) { \
+ IV[i] *= F(i); \
+ B -= IV[i] * V0[i]; \
+ IV[i] *= rd2; \
+ } \
+ B = B * rd2 + 0.5f; \
+ } while (0)
+
+#define CALCCDOT(TEXEL, NV, NC, IV, B, V)\
+ do { \
+ GLfloat dot = 0.0F; \
+ for (i = 0; i < NC; i++) { \
+ dot += V[i] * IV[i]; \
+ } \
+ TEXEL = (GLint)(dot + B); \
+ if (SAFECDOT) { \
+ if (TEXEL < 0) { \
+ TEXEL = 0; \
+ } else if (TEXEL > NV) { \
+ TEXEL = NV; \
+ } \
+ } \
+ } while (0)
+
+
+static GLint
+fxt1_bestcol (GLfloat vec[][MAX_COMP], GLint nv,
+ GLubyte input[MAX_COMP], GLint nc)
{
- int i, j, best = -1;
- float err = 1e9; /* big enough */
+ GLint i, j, best = -1;
+ GLfloat err = 1e9; /* big enough */
for (j = 0; j < nv; j++) {
- float e = 0;
+ GLfloat e = 0.0F;
for (i = 0; i < nc; i++) {
e += (vec[j][i] - input[i]) * (vec[j][i] - input[i]);
}
}
-static int
-fxt1_worst (float vec[MAX_COMP],
- unsigned char input[N_TEXELS][MAX_COMP], int nc, int n)
+static GLint
+fxt1_worst (GLfloat vec[MAX_COMP],
+ GLubyte input[N_TEXELS][MAX_COMP], GLint nc, GLint n)
{
- int i, k, worst = -1;
- float err = -1; /* small enough */
+ GLint i, k, worst = -1;
+ GLfloat err = -1.0F; /* small enough */
for (k = 0; k < n; k++) {
- float e = 0;
+ GLfloat e = 0.0F;
for (i = 0; i < nc; i++) {
e += (vec[i] - input[k][i]) * (vec[i] - input[k][i]);
}
}
-static int
-fxt1_variance (double variance[MAX_COMP],
- unsigned char input[N_TEXELS][MAX_COMP], int nc, int n)
+static GLint
+fxt1_variance (GLdouble variance[MAX_COMP],
+ GLubyte input[N_TEXELS][MAX_COMP], GLint nc, GLint n)
{
- int i, k, best = 0;
- int sx, sx2;
- double var, maxvar = -1; /* small enough */
- double teenth = 1.0 / n;
+ GLint i, k, best = 0;
+ GLint sx, sx2;
+ GLdouble var, maxvar = -1; /* small enough */
+ GLdouble teenth = 1.0 / n;
for (i = 0; i < nc; i++) {
sx = sx2 = 0;
for (k = 0; k < n; k++) {
- int t = input[k][i];
+ GLint t = input[k][i];
sx += t;
sx2 += t * t;
}
}
-static int
-fxt1_choose (float vec[][MAX_COMP], int nv,
- unsigned char input[N_TEXELS][MAX_COMP], int nc, int n)
+static GLint
+fxt1_choose (GLfloat vec[][MAX_COMP], GLint nv,
+ GLubyte input[N_TEXELS][MAX_COMP], GLint nc, GLint n)
{
#if 0
/* Choose colors from a grid.
*/
- int i, j;
+ GLint i, j;
for (j = 0; j < nv; j++) {
- int m = j * (n - 1) / (nv - 1);
+ GLint m = j * (n - 1) / (nv - 1);
for (i = 0; i < nc; i++) {
vec[j][i] = input[m][i];
}
* the 8x4 tile and use those as the two representative colors.
* There are probably better algorithms to use (histogram-based).
*/
- int i, j, k;
- int minSum = 1000; /* big enough */
- int maxSum = -1; /* small enough */
- int minCol = 0; /* phoudoin: silent compiler! */
- int maxCol = 0; /* phoudoin: silent compiler! */
+ GLint i, j, k;
+ GLint minSum = 2000; /* big enough */
+ GLint maxSum = -1; /* small enough */
+ GLint minCol = 0; /* phoudoin: silent compiler! */
+ GLint maxCol = 0; /* phoudoin: silent compiler! */
struct {
- int flag;
- int key;
- int freq;
- int idx;
+ GLint flag;
+ GLint key;
+ GLint freq;
+ GLint idx;
} hist[N_TEXELS];
- int lenh = 0;
+ GLint lenh = 0;
- memset(hist, 0, sizeof(hist));
+ _mesa_memset(hist, 0, sizeof(hist));
for (k = 0; k < n; k++) {
- int l;
- int key = 0;
- int sum = 0;
+ GLint l;
+ GLint key = 0;
+ GLint sum = 0;
for (i = 0; i < nc; i++) {
key <<= 8;
key |= input[k][i];
if (lenh <= nv) {
for (j = 0; j < lenh; j++) {
for (i = 0; i < nc; i++) {
- vec[j][i] = (float)input[hist[j].idx][i];
+ vec[j][i] = (GLfloat)input[hist[j].idx][i];
}
}
for (; j < nv; j++) {
for (j = 0; j < nv; j++) {
for (i = 0; i < nc; i++) {
- vec[j][i] = ((nv - 1 - j) * input[minCol][i] + j * input[maxCol][i] + (nv - 1) / 2) / (nv - 1);
+ vec[j][i] = ((nv - 1 - j) * input[minCol][i] + j * input[maxCol][i] + (nv - 1) / 2) / (GLfloat)(nv - 1);
}
}
#endif
}
-static int
-fxt1_lloyd (float vec[][MAX_COMP], int nv,
- unsigned char input[N_TEXELS][MAX_COMP], int nc, int n)
+static GLint
+fxt1_lloyd (GLfloat vec[][MAX_COMP], GLint nv,
+ GLubyte input[N_TEXELS][MAX_COMP], GLint nc, GLint n)
{
/* Use the generalized lloyd's algorithm for VQ:
* find 4 color vectors.
* n number of input samples
*/
- int sum[MAX_VECT][MAX_COMP]; /* used to accumulate closest texels */
- int cnt[MAX_VECT]; /* how many times a certain vector was chosen */
- float error, lasterror = 1e9;
+ GLint sum[MAX_VECT][MAX_COMP]; /* used to accumulate closest texels */
+ GLint cnt[MAX_VECT]; /* how many times a certain vector was chosen */
+ GLfloat error, lasterror = 1e9;
- int i, j, k, rep;
+ GLint i, j, k, rep;
/* the quantizer */
for (rep = 0; rep < LL_N_REP; rep++) {
/* scan whole block */
for (k = 0; k < n; k++) {
#if 1
- int best = -1;
- float err = 1e9; /* big enough */
+ GLint best = -1;
+ GLfloat err = 1e9; /* big enough */
/* determine best vector */
for (j = 0; j < nv; j++) {
- float e = (vec[j][0] - input[k][0]) * (vec[j][0] - input[k][0]) +
+ GLfloat e = (vec[j][0] - input[k][0]) * (vec[j][0] - input[k][0]) +
(vec[j][1] - input[k][1]) * (vec[j][1] - input[k][1]) +
(vec[j][2] - input[k][2]) * (vec[j][2] - input[k][2]);
if (nc == 4) {
}
}
#else
- int best = fxt1_bestcol(vec, n_vect, input[k], n_comp, &err);
+ GLint best = fxt1_bestcol(vec, nv, input[k], nc, &err);
#endif
/* add in closest color */
for (i = 0; i < nc; i++) {
/* move each vector to the barycenter of its closest colors */
for (j = 0; j < nv; j++) {
if (cnt[j]) {
- float div = 1.0 / cnt[j];
+ GLfloat div = 1.0F / cnt[j];
for (i = 0; i < nc; i++) {
vec[j][i] = div * sum[j][i];
}
} else {
/* this vec has no samples or is identical with a previous vec */
- int worst = fxt1_worst(vec[j], input, nc, n);
+ GLint worst = fxt1_worst(vec[j], input, nc, n);
for (i = 0; i < nc; i++) {
vec[j][i] = input[worst][i];
}
static void
-fxt1_quantize_CHROMA (unsigned long *cc,
- unsigned char input[N_TEXELS][MAX_COMP])
+fxt1_quantize_CHROMA (GLuint *cc,
+ GLubyte input[N_TEXELS][MAX_COMP])
{
- const int n_vect = 4; /* 4 base vectors to find */
- const int n_comp = 3; /* 3 components: R, G, B */
- float vec[MAX_VECT][MAX_COMP];
- int i, j, k;
+ const GLint n_vect = 4; /* 4 base vectors to find */
+ const GLint n_comp = 3; /* 3 components: R, G, B */
+ GLfloat vec[MAX_VECT][MAX_COMP];
+ GLint i, j, k;
Fx64 hi; /* high quadword */
- unsigned long lohi, lolo; /* low quadword: hi dword, lo dword */
+ GLuint lohi, lolo; /* low quadword: hi dword, lo dword */
if (fxt1_choose(vec, n_vect, input, n_comp, N_TEXELS) != 0) {
fxt1_lloyd(vec, n_vect, input, n_comp, N_TEXELS);
for (i = 0; i < n_comp; i++) {
/* add in colors */
FX64_SHL(hi, 5);
- FX64_OR32(hi, (unsigned int)(vec[j][i] / 8.0));
+ FX64_OR32(hi, (GLuint)(vec[j][i] / 8.0F));
}
}
((Fx64 *)cc)[1] = hi;
static void
-fxt1_quantize_ALPHA0 (unsigned long *cc,
- unsigned char input[N_TEXELS][MAX_COMP],
- unsigned char reord[N_TEXELS][MAX_COMP], int n)
+fxt1_quantize_ALPHA0 (GLuint *cc,
+ GLubyte input[N_TEXELS][MAX_COMP],
+ GLubyte reord[N_TEXELS][MAX_COMP], GLint n)
{
- const int n_vect = 3; /* 3 base vectors to find */
- const int n_comp = 4; /* 4 components: R, G, B, A */
- float vec[MAX_VECT][MAX_COMP];
- int i, j, k;
+ const GLint n_vect = 3; /* 3 base vectors to find */
+ const GLint n_comp = 4; /* 4 components: R, G, B, A */
+ GLfloat vec[MAX_VECT][MAX_COMP];
+ GLint i, j, k;
Fx64 hi; /* high quadword */
- unsigned long lohi, lolo; /* low quadword: hi dword, lo dword */
+ GLuint lohi, lolo; /* low quadword: hi dword, lo dword */
/* the last vector indicates zero */
for (i = 0; i < n_comp; i++) {
for (j = n_vect - 1; j >= 0; j--) {
/* add in alphas */
FX64_SHL(hi, 5);
- FX64_OR32(hi, (unsigned int)(vec[j][ACOMP] / 8.0));
+ FX64_OR32(hi, (GLuint)(vec[j][ACOMP] / 8.0F));
}
for (j = n_vect - 1; j >= 0; j--) {
for (i = 0; i < n_comp - 1; i++) {
/* add in colors */
FX64_SHL(hi, 5);
- FX64_OR32(hi, (unsigned int)(vec[j][i] / 8.0));
+ FX64_OR32(hi, (GLuint)(vec[j][i] / 8.0F));
}
}
((Fx64 *)cc)[1] = hi;
static void
-fxt1_quantize_ALPHA1 (unsigned long *cc,
- unsigned char input[N_TEXELS][MAX_COMP])
+fxt1_quantize_ALPHA1 (GLuint *cc,
+ GLubyte input[N_TEXELS][MAX_COMP])
{
- const int n_vect = 3; /* highest vector number in each microtile */
- const int n_comp = 4; /* 4 components: R, G, B, A */
- float vec[1 + 1 + 1][MAX_COMP]; /* 1.5 extrema for each sub-block */
- float b, iv[MAX_COMP]; /* interpolation vector */
- int i, j, k;
+ const GLint n_vect = 3; /* highest vector number in each microtile */
+ const GLint n_comp = 4; /* 4 components: R, G, B, A */
+ GLfloat vec[1 + 1 + 1][MAX_COMP]; /* 1.5 extrema for each sub-block */
+ GLfloat b, iv[MAX_COMP]; /* interpolation vector */
+ GLint i, j, k;
Fx64 hi; /* high quadword */
- unsigned long lohi, lolo; /* low quadword: hi dword, lo dword */
-
- int minSum;
- int maxSum;
- int minColL = 0, maxColL = 0;
- int minColR = 0, maxColR = 0;
- int sumL = 0, sumR = 0;
-
+ GLuint lohi, lolo; /* low quadword: hi dword, lo dword */
+
+ GLint minSum;
+ GLint maxSum;
+ GLint minColL = 0, maxColL = 0;
+ GLint minColR = 0, maxColR = 0;
+ GLint sumL = 0, sumR = 0;
+ GLint nn_comp;
/* Our solution here is to find the darkest and brightest colors in
* the 4x4 tile and use those as the two representative colors.
* There are probably better algorithms to use (histogram-based).
*/
- minSum = 1000; /* big enough */
- maxSum = -1; /* small enough */
- for (k = 0; k < N_TEXELS / 2; k++) {
- int sum = 0;
- for (i = 0; i < n_comp; i++) {
- sum += input[k][i];
- }
- if (minSum > sum) {
- minSum = sum;
- minColL = k;
- }
- if (maxSum < sum) {
- maxSum = sum;
- maxColL = k;
- }
- sumL += sum;
+ nn_comp = n_comp;
+ while ((minColL == maxColL) && nn_comp) {
+ minSum = 2000; /* big enough */
+ maxSum = -1; /* small enough */
+ for (k = 0; k < N_TEXELS / 2; k++) {
+ GLint sum = 0;
+ for (i = 0; i < nn_comp; i++) {
+ sum += input[k][i];
+ }
+ if (minSum > sum) {
+ minSum = sum;
+ minColL = k;
+ }
+ if (maxSum < sum) {
+ maxSum = sum;
+ maxColL = k;
+ }
+ sumL += sum;
+ }
+
+ nn_comp--;
}
- minSum = 1000; /* big enough */
- maxSum = -1; /* small enough */
- for (; k < N_TEXELS; k++) {
- int sum = 0;
- for (i = 0; i < n_comp; i++) {
- sum += input[k][i];
- }
- if (minSum > sum) {
- minSum = sum;
- minColR = k;
- }
- if (maxSum < sum) {
- maxSum = sum;
- maxColR = k;
- }
- sumR += sum;
+
+ nn_comp = n_comp;
+ while ((minColR == maxColR) && nn_comp) {
+ minSum = 2000; /* big enough */
+ maxSum = -1; /* small enough */
+ for (k = N_TEXELS / 2; k < N_TEXELS; k++) {
+ GLint sum = 0;
+ for (i = 0; i < nn_comp; i++) {
+ sum += input[k][i];
+ }
+ if (minSum > sum) {
+ minSum = sum;
+ minColR = k;
+ }
+ if (maxSum < sum) {
+ maxSum = sum;
+ maxColR = k;
+ }
+ sumR += sum;
+ }
+
+ nn_comp--;
}
/* choose the common vector (yuck!) */
-{
- int j1, j2;
- int v1 = 0, v2 = 0;
- float err = 1e9; /* big enough */
- float tv[2 * 2][MAX_COMP]; /* 2 extrema for each sub-block */
- for (i = 0; i < n_comp; i++) {
- tv[0][i] = input[minColL][i];
- tv[1][i] = input[maxColL][i];
- tv[2][i] = input[minColR][i];
- tv[3][i] = input[maxColR][i];
- }
- for (j1 = 0; j1 < 2; j1++) {
- for (j2 = 2; j2 < 4; j2++) {
- float e = 0;
- for (i = 0; i < n_comp; i++) {
- e += (tv[j1][i] - tv[j2][i]) * (tv[j1][i] - tv[j2][i]);
- }
- if (e < err) {
- err = e;
- v1 = j1;
- v2 = j2;
- }
+ {
+ GLint j1, j2;
+ GLint v1 = 0, v2 = 0;
+ GLfloat err = 1e9; /* big enough */
+ GLfloat tv[2 * 2][MAX_COMP]; /* 2 extrema for each sub-block */
+ for (i = 0; i < n_comp; i++) {
+ tv[0][i] = input[minColL][i];
+ tv[1][i] = input[maxColL][i];
+ tv[2][i] = input[minColR][i];
+ tv[3][i] = input[maxColR][i];
+ }
+ for (j1 = 0; j1 < 2; j1++) {
+ for (j2 = 2; j2 < 4; j2++) {
+ GLfloat e = 0.0F;
+ for (i = 0; i < n_comp; i++) {
+ e += (tv[j1][i] - tv[j2][i]) * (tv[j1][i] - tv[j2][i]);
+ }
+ if (e < err) {
+ err = e;
+ v1 = j1;
+ v2 = j2;
+ }
+ }
+ }
+ for (i = 0; i < n_comp; i++) {
+ vec[0][i] = tv[1 - v1][i];
+ vec[1][i] = (tv[v1][i] * sumL + tv[v2][i] * sumR) / (sumL + sumR);
+ vec[2][i] = tv[5 - v2][i];
}
}
- for (i = 0; i < n_comp; i++) {
- vec[0][i] = tv[1 - v1][i];
- vec[1][i] = (tv[v1][i] * sumL + tv[v2][i] * sumR) / (sumL + sumR);
- vec[2][i] = tv[5 - v2][i];
- }
-}
/* left microtile */
cc[0] = 0;
if (minColL != maxColL) {
/* compute interpolation vector */
- float d2 = 0;
- float rd2;
-
- for (i = 0; i < n_comp; i++) {
- iv[i] = vec[1][i] - vec[0][i];
- d2 += iv[i] * iv[i];
- }
- rd2 = (float)n_vect / d2;
- b = 0;
- for (i = 0; i < n_comp; i++) {
- b -= iv[i] * vec[0][i];
- iv[i] *= rd2;
- }
- b = b * rd2 + 0.5f;
+ MAKEIVEC(n_vect, n_comp, iv, b, vec[0], vec[1]);
/* add in texels */
lolo = 0;
for (k = N_TEXELS / 2 - 1; k >= 0; k--) {
- int texel;
+ GLint texel;
/* interpolate color */
- float dot = 0;
- for (i = 0; i < n_comp; i++) {
- dot += input[k][i] * iv[i];
- }
- texel = (int)(dot + b);
- if (texel < 0) {
- texel = 0;
- } else if (texel > n_vect) {
- texel = n_vect;
- }
+ CALCCDOT(texel, n_vect, n_comp, iv, b, input[k]);
/* add in texel */
lolo <<= 2;
lolo |= texel;
cc[1] = 0;
if (minColR != maxColR) {
/* compute interpolation vector */
- float d2 = 0;
- float rd2;
-
- for (i = 0; i < n_comp; i++) {
- iv[i] = vec[1][i] - vec[2][i];
- d2 += iv[i] * iv[i];
- }
- rd2 = (float)n_vect / d2;
- b = 0;
- for (i = 0; i < n_comp; i++) {
- b -= iv[i] * vec[2][i];
- iv[i] *= rd2;
- }
- b = b * rd2 + 0.5f;
+ MAKEIVEC(n_vect, n_comp, iv, b, vec[2], vec[1]);
/* add in texels */
lohi = 0;
for (k = N_TEXELS - 1; k >= N_TEXELS / 2; k--) {
- int texel;
+ GLint texel;
/* interpolate color */
- float dot = 0;
- for (i = 0; i < n_comp; i++) {
- dot += input[k][i] * iv[i];
- }
- texel = (int)(dot + b);
- if (texel < 0) {
- texel = 0;
- } else if (texel > n_vect) {
- texel = n_vect;
- }
+ CALCCDOT(texel, n_vect, n_comp, iv, b, input[k]);
/* add in texel */
lohi <<= 2;
lohi |= texel;
for (j = n_vect - 1; j >= 0; j--) {
/* add in alphas */
FX64_SHL(hi, 5);
- FX64_OR32(hi, (unsigned int)(vec[j][ACOMP] / 8.0));
+ FX64_OR32(hi, (GLuint)(vec[j][ACOMP] / 8.0F));
}
for (j = n_vect - 1; j >= 0; j--) {
for (i = 0; i < n_comp - 1; i++) {
/* add in colors */
FX64_SHL(hi, 5);
- FX64_OR32(hi, (unsigned int)(vec[j][i] / 8.0));
+ FX64_OR32(hi, (GLuint)(vec[j][i] / 8.0F));
}
}
((Fx64 *)cc)[1] = hi;
static void
-fxt1_quantize_HI (unsigned long *cc,
- unsigned char input[N_TEXELS][MAX_COMP],
- unsigned char reord[N_TEXELS][MAX_COMP], int n)
+fxt1_quantize_HI (GLuint *cc,
+ GLubyte input[N_TEXELS][MAX_COMP],
+ GLubyte reord[N_TEXELS][MAX_COMP], GLint n)
{
- const int n_vect = 6; /* highest vector number */
- const int n_comp = 3; /* 3 components: R, G, B */
- float b = 0.0; /* phoudoin: silent compiler! */
- float iv[MAX_COMP]; /* interpolation vector */
- int i, k;
- unsigned long hihi; /* high quadword: hi dword */
-
- int minSum = 1000; /* big enough */
- int maxSum = -1; /* small enough */
- int minCol = 0; /* phoudoin: silent compiler! */
- int maxCol = 0; /* phoudoin: silent compiler! */
+ const GLint n_vect = 6; /* highest vector number */
+ const GLint n_comp = 3; /* 3 components: R, G, B */
+ GLfloat b = 0.0F; /* phoudoin: silent compiler! */
+ GLfloat iv[MAX_COMP]; /* interpolation vector */
+ GLint i, k;
+ GLuint hihi; /* high quadword: hi dword */
+
+ GLint minSum = 2000; /* big enough */
+ GLint maxSum = -1; /* small enough */
+ GLint minCol = 0; /* phoudoin: silent compiler! */
+ GLint maxCol = 0; /* phoudoin: silent compiler! */
/* Our solution here is to find the darkest and brightest colors in
* the 8x4 tile and use those as the two representative colors.
* There are probably better algorithms to use (histogram-based).
*/
for (k = 0; k < n; k++) {
- int sum = 0;
+ GLint sum = 0;
for (i = 0; i < n_comp; i++) {
sum += reord[k][i];
}
/* compute interpolation vector */
if (minCol != maxCol) {
- float d2 = 0;
- float rd2;
-
- for (i = 0; i < n_comp; i++) {
- iv[i] = reord[maxCol][i] - reord[minCol][i];
- d2 += iv[i] * iv[i];
- }
- rd2 = (float)n_vect / d2;
- b = 0;
- for (i = 0; i < n_comp; i++) {
- b -= iv[i] * reord[minCol][i];
- iv[i] *= rd2;
- }
- b = b * rd2 + 0.5f;
+ MAKEIVEC(n_vect, n_comp, iv, b, reord[minCol], reord[maxCol]);
}
/* add in texels */
for (k = N_TEXELS - 1; k >= 0; k--) {
- int t = k * 3;
- unsigned long *kk = (unsigned long *)((unsigned long)cc + t / 8);
- int texel = n_vect + 1; /* transparent black */
+ GLint t = k * 3;
+ GLuint *kk = (GLuint *)((char *)cc + t / 8);
+ GLint texel = n_vect + 1; /* transparent black */
if (!ISTBLACK(input[k])) {
if (minCol != maxCol) {
/* interpolate color */
- float dot = 0;
- for (i = 0; i < n_comp; i++) {
- dot += input[k][i] * iv[i];
- }
- texel = (int)(dot + b);
- if (texel < 0) {
- texel = 0;
- } else if (texel > n_vect) {
- texel = n_vect;
- }
+ CALCCDOT(texel, n_vect, n_comp, iv, b, input[k]);
/* add in texel */
kk[0] |= texel << (t & 7);
}
static void
-fxt1_quantize_MIXED1 (unsigned long *cc,
- unsigned char input[N_TEXELS][MAX_COMP])
+fxt1_quantize_MIXED1 (GLuint *cc,
+ GLubyte input[N_TEXELS][MAX_COMP])
{
- const int n_vect = 2; /* highest vector number in each microtile */
- const int n_comp = 3; /* 3 components: R, G, B */
- unsigned char vec[2 * 2][MAX_COMP]; /* 2 extrema for each sub-block */
- float b, iv[MAX_COMP]; /* interpolation vector */
- int i, j, k;
+ const GLint n_vect = 2; /* highest vector number in each microtile */
+ const GLint n_comp = 3; /* 3 components: R, G, B */
+ GLubyte vec[2 * 2][MAX_COMP]; /* 2 extrema for each sub-block */
+ GLfloat b, iv[MAX_COMP]; /* interpolation vector */
+ GLint i, j, k;
Fx64 hi; /* high quadword */
- unsigned long lohi, lolo; /* low quadword: hi dword, lo dword */
+ GLuint lohi, lolo; /* low quadword: hi dword, lo dword */
- int minSum;
- int maxSum;
- int minColL = 0, maxColL = -1;
- int minColR = 0, maxColR = -1;
+ GLint minSum;
+ GLint maxSum;
+ GLint minColL = 0, maxColL = -1;
+ GLint minColR = 0, maxColR = -1;
/* Our solution here is to find the darkest and brightest colors in
* the 4x4 tile and use those as the two representative colors.
* There are probably better algorithms to use (histogram-based).
*/
- minSum = 1000; /* big enough */
+ minSum = 2000; /* big enough */
maxSum = -1; /* small enough */
for (k = 0; k < N_TEXELS / 2; k++) {
if (!ISTBLACK(input[k])) {
- int sum = 0;
+ GLint sum = 0;
for (i = 0; i < n_comp; i++) {
sum += input[k][i];
}
}
}
}
- minSum = 1000; /* big enough */
+ minSum = 2000; /* big enough */
maxSum = -1; /* small enough */
for (; k < N_TEXELS; k++) {
if (!ISTBLACK(input[k])) {
- int sum = 0;
+ GLint sum = 0;
for (i = 0; i < n_comp; i++) {
sum += input[k][i];
}
/* left microtile */
if (maxColL == -1) {
/* all transparent black */
- cc[0] = -1;
+ cc[0] = ~0u;
for (i = 0; i < n_comp; i++) {
vec[0][i] = 0;
vec[1][i] = 0;
}
if (minColL != maxColL) {
/* compute interpolation vector */
- float d2 = 0;
- float rd2;
-
- for (i = 0; i < n_comp; i++) {
- iv[i] = vec[1][i] - vec[0][i];
- d2 += iv[i] * iv[i];
- }
- rd2 = (float)n_vect / d2;
- b = 0;
- for (i = 0; i < n_comp; i++) {
- b -= iv[i] * vec[0][i];
- iv[i] *= rd2;
- }
- b = b * rd2 + 0.5f;
+ MAKEIVEC(n_vect, n_comp, iv, b, vec[0], vec[1]);
/* add in texels */
lolo = 0;
for (k = N_TEXELS / 2 - 1; k >= 0; k--) {
- int texel = n_vect + 1; /* transparent black */
+ GLint texel = n_vect + 1; /* transparent black */
if (!ISTBLACK(input[k])) {
/* interpolate color */
- float dot = 0;
- for (i = 0; i < n_comp; i++) {
- dot += input[k][i] * iv[i];
- }
- texel = (int)(dot + b);
- if (texel < 0) {
- texel = 0;
- } else if (texel > n_vect) {
- texel = n_vect;
- }
+ CALCCDOT(texel, n_vect, n_comp, iv, b, input[k]);
}
/* add in texel */
lolo <<= 2;
/* right microtile */
if (maxColR == -1) {
/* all transparent black */
- cc[1] = -1;
+ cc[1] = ~0u;
for (i = 0; i < n_comp; i++) {
vec[2][i] = 0;
vec[3][i] = 0;
}
if (minColR != maxColR) {
/* compute interpolation vector */
- float d2 = 0;
- float rd2;
-
- for (i = 0; i < n_comp; i++) {
- iv[i] = vec[3][i] - vec[2][i];
- d2 += iv[i] * iv[i];
- }
- rd2 = (float)n_vect / d2;
- b = 0;
- for (i = 0; i < n_comp; i++) {
- b -= iv[i] * vec[2][i];
- iv[i] *= rd2;
- }
- b = b * rd2 + 0.5f;
+ MAKEIVEC(n_vect, n_comp, iv, b, vec[2], vec[3]);
/* add in texels */
lohi = 0;
for (k = N_TEXELS - 1; k >= N_TEXELS / 2; k--) {
- int texel = n_vect + 1; /* transparent black */
+ GLint texel = n_vect + 1; /* transparent black */
if (!ISTBLACK(input[k])) {
/* interpolate color */
- float dot = 0;
- for (i = 0; i < n_comp; i++) {
- dot += input[k][i] * iv[i];
- }
- texel = (int)(dot + b);
- if (texel < 0) {
- texel = 0;
- } else if (texel > n_vect) {
- texel = n_vect;
- }
+ CALCCDOT(texel, n_vect, n_comp, iv, b, input[k]);
}
/* add in texel */
lohi <<= 2;
static void
-fxt1_quantize_MIXED0 (unsigned long *cc,
- unsigned char input[N_TEXELS][MAX_COMP])
+fxt1_quantize_MIXED0 (GLuint *cc,
+ GLubyte input[N_TEXELS][MAX_COMP])
{
- const int n_vect = 3; /* highest vector number in each microtile */
- const int n_comp = 3; /* 3 components: R, G, B */
- unsigned char vec[2 * 2][MAX_COMP]; /* 2 extrema for each sub-block */
- float b, iv[MAX_COMP]; /* interpolation vector */
- int i, j, k;
+ const GLint n_vect = 3; /* highest vector number in each microtile */
+ const GLint n_comp = 3; /* 3 components: R, G, B */
+ GLubyte vec[2 * 2][MAX_COMP]; /* 2 extrema for each sub-block */
+ GLfloat b, iv[MAX_COMP]; /* interpolation vector */
+ GLint i, j, k;
Fx64 hi; /* high quadword */
- unsigned long lohi, lolo; /* low quadword: hi dword, lo dword */
+ GLuint lohi, lolo; /* low quadword: hi dword, lo dword */
- int minColL = 0, maxColL = 0;
- int minColR = 0, maxColR = 0;
+ GLint minColL = 0, maxColL = 0;
+ GLint minColR = 0, maxColR = 0;
#if 0
- int minSum;
- int maxSum;
+ GLint minSum;
+ GLint maxSum;
/* Our solution here is to find the darkest and brightest colors in
* the 4x4 tile and use those as the two representative colors.
* There are probably better algorithms to use (histogram-based).
*/
- minSum = 1000; /* big enough */
+ minSum = 2000; /* big enough */
maxSum = -1; /* small enough */
for (k = 0; k < N_TEXELS / 2; k++) {
- int sum = 0;
+ GLint sum = 0;
for (i = 0; i < n_comp; i++) {
sum += input[k][i];
}
maxColL = k;
}
}
- minSum = 1000; /* big enough */
+ minSum = 2000; /* big enough */
maxSum = -1; /* small enough */
for (; k < N_TEXELS; k++) {
- int sum = 0;
+ GLint sum = 0;
for (i = 0; i < n_comp; i++) {
sum += input[k][i];
}
}
}
#else
- int minVal;
- int maxVal;
- int maxVarL = fxt1_variance(NULL, input, n_comp, N_TEXELS / 2);
- int maxVarR = fxt1_variance(NULL, &input[N_TEXELS / 2], n_comp, N_TEXELS / 2);
+ GLint minVal;
+ GLint maxVal;
+ GLint maxVarL = fxt1_variance(NULL, input, n_comp, N_TEXELS / 2);
+ GLint maxVarR = fxt1_variance(NULL, &input[N_TEXELS / 2], n_comp, N_TEXELS / 2);
/* Scan the channel with max variance for lo & hi
* and use those as the two representative colors.
*/
- minVal = 1000; /* big enough */
+ minVal = 2000; /* big enough */
maxVal = -1; /* small enough */
for (k = 0; k < N_TEXELS / 2; k++) {
- int t = input[k][maxVarL];
+ GLint t = input[k][maxVarL];
if (minVal > t) {
minVal = t;
minColL = k;
maxColL = k;
}
}
- minVal = 1000; /* big enough */
+ minVal = 2000; /* big enough */
maxVal = -1; /* small enough */
for (; k < N_TEXELS; k++) {
- int t = input[k][maxVarR];
+ GLint t = input[k][maxVarR];
if (minVal > t) {
minVal = t;
minColR = k;
}
if (minColL != maxColL) {
/* compute interpolation vector */
- float d2 = 0;
- float rd2;
-
- for (i = 0; i < n_comp; i++) {
- iv[i] = vec[1][i] - vec[0][i];
- d2 += iv[i] * iv[i];
- }
- rd2 = (float)n_vect / d2;
- b = 0;
- for (i = 0; i < n_comp; i++) {
- b -= iv[i] * vec[0][i];
- iv[i] *= rd2;
- }
- b = b * rd2 + 0.5f;
+ MAKEIVEC(n_vect, n_comp, iv, b, vec[0], vec[1]);
/* add in texels */
lolo = 0;
for (k = N_TEXELS / 2 - 1; k >= 0; k--) {
- int texel;
+ GLint texel;
/* interpolate color */
- float dot = 0;
- for (i = 0; i < n_comp; i++) {
- dot += input[k][i] * iv[i];
- }
- texel = (int)(dot + b);
- if (texel < 0) {
- texel = 0;
- } else if (texel > n_vect) {
- texel = n_vect;
- }
+ CALCCDOT(texel, n_vect, n_comp, iv, b, input[k]);
/* add in texel */
lolo <<= 2;
lolo |= texel;
}
/* funky encoding for LSB of green */
- if ((int)((lolo >> 1) & 1) != (((vec[1][GCOMP] ^ vec[0][GCOMP]) >> 2) & 1)) {
+ if ((GLint)((lolo >> 1) & 1) != (((vec[1][GCOMP] ^ vec[0][GCOMP]) >> 2) & 1)) {
for (i = 0; i < n_comp; i++) {
vec[1][i] = input[minColL][i];
vec[0][i] = input[maxColL][i];
}
if (minColR != maxColR) {
/* compute interpolation vector */
- float d2 = 0;
- float rd2;
-
- for (i = 0; i < n_comp; i++) {
- iv[i] = vec[3][i] - vec[2][i];
- d2 += iv[i] * iv[i];
- }
- rd2 = (float)n_vect / d2;
- b = 0;
- for (i = 0; i < n_comp; i++) {
- b -= iv[i] * vec[2][i];
- iv[i] *= rd2;
- }
- b = b * rd2 + 0.5f;
+ MAKEIVEC(n_vect, n_comp, iv, b, vec[2], vec[3]);
/* add in texels */
lohi = 0;
for (k = N_TEXELS - 1; k >= N_TEXELS / 2; k--) {
- int texel;
+ GLint texel;
/* interpolate color */
- float dot = 0;
- for (i = 0; i < n_comp; i++) {
- dot += input[k][i] * iv[i];
- }
- texel = (int)(dot + b);
- if (texel < 0) {
- texel = 0;
- } else if (texel > n_vect) {
- texel = n_vect;
- }
+ CALCCDOT(texel, n_vect, n_comp, iv, b, input[k]);
/* add in texel */
lohi <<= 2;
lohi |= texel;
}
/* funky encoding for LSB of green */
- if ((int)((lohi >> 1) & 1) != (((vec[3][GCOMP] ^ vec[2][GCOMP]) >> 2) & 1)) {
+ if ((GLint)((lohi >> 1) & 1) != (((vec[3][GCOMP] ^ vec[2][GCOMP]) >> 2) & 1)) {
for (i = 0; i < n_comp; i++) {
vec[3][i] = input[minColR][i];
vec[2][i] = input[maxColR][i];
static void
-fxt1_quantize (unsigned long *cc, const unsigned char *lines[], int comps)
+fxt1_quantize (GLuint *cc, const GLubyte *lines[], GLint comps)
{
- int trualpha;
- unsigned char reord[N_TEXELS][MAX_COMP];
+ GLint trualpha;
+ GLubyte reord[N_TEXELS][MAX_COMP];
- unsigned char input[N_TEXELS][MAX_COMP];
- int i, k, l;
+ GLubyte input[N_TEXELS][MAX_COMP];
+ GLint i, k, l;
- memset(input, -1, sizeof(input));
+ if (comps == 3) {
+ /* make the whole block opaque */
+ _mesa_memset(input, -1, sizeof(input));
+ }
/* 8 texels each line */
for (l = 0; l < 4; l++) {
if (trualpha) {
fxt1_quantize_ALPHA1(cc, input);
} else if (l == 0) {
- cc[0] = cc[1] = cc[2] = -1;
+ cc[0] = cc[1] = cc[2] = ~0u;
cc[3] = 0;
} else if (l < N_TEXELS) {
fxt1_quantize_MIXED1(cc, input);
}
-int
-fxt1_encode (GLcontext *ctx,
- unsigned int width, unsigned int height,
- int srcFormat,
- const void *source, int srcRowStride,
- void *dest, int destRowStride)
+static void
+fxt1_encode (GLuint width, GLuint height, GLint comps,
+ const void *source, GLint srcRowStride,
+ void *dest, GLint destRowStride)
{
- const int comps = (srcFormat == GL_RGB) ? 3 : 4;
- unsigned int x, y;
- const unsigned char *data;
- unsigned long *encoded = dest;
- GLubyte *newSource = NULL;
+ GLuint x, y;
+ const GLubyte *data;
+ GLuint *encoded = (GLuint *)dest;
+ void *newSource = NULL;
- (void) ctx;
+ assert(comps == 3 || comps == 4);
- /*
- * Rescale image if width is less than 8 or height is less than 4.
- */
- if (width < 8 || height < 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 = MALLOC(comps * newWidth * newHeight * sizeof(GLchan));
+ 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, source, srcRowStride, newSource);
+ comps, (const GLchan *) source,
+ srcRowStride, (GLchan *) newSource);
source = newSource;
width = newWidth;
height = newHeight;
srcRowStride = comps * newWidth;
}
- data = source;
+ /* 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) {
- unsigned int offs = 0 + (y + 0) * srcRowStride;
+ GLuint offs = 0 + (y + 0) * srcRowStride;
for (x = 0; x < width; x += 8) {
- const unsigned char *lines[4];
+ const GLubyte *lines[4];
lines[0] = &data[offs];
lines[1] = lines[0] + srcRowStride;
lines[2] = lines[1] + srcRowStride;
lines[3] = lines[2] + srcRowStride;
offs += 8 * comps;
fxt1_quantize(encoded, lines, comps);
- /* 128 bits per 8x4 block = 4bpp */
+ /* 128 bits per 8x4 block */
encoded += 4;
}
encoded += destRowStride;
}
+ cleanUp:
if (newSource != NULL) {
- FREE(newSource);
+ _mesa_free(newSource);
}
-
- return 0;
}
/* lookup table for scaling 5 bit colors up to 8 bits */
-static unsigned char _rgb_scale_5[] = {
+static const GLubyte _rgb_scale_5[] = {
0, 8, 16, 25, 33, 41, 49, 58,
66, 74, 82, 90, 99, 107, 115, 123,
132, 140, 148, 156, 165, 173, 181, 189,
};
/* lookup table for scaling 6 bit colors up to 8 bits */
-static unsigned char _rgb_scale_6[] = {
+static const GLubyte _rgb_scale_6[] = {
0, 4, 8, 12, 16, 20, 24, 28,
32, 36, 40, 45, 49, 53, 57, 61,
65, 69, 73, 77, 81, 85, 89, 93,
};
-#define CC_SEL(cc, which) ((cc)[(which) / 32] >> ((which) & 31))
+#define CC_SEL(cc, which) (((GLuint *)(cc))[(which) / 32] >> ((which) & 31))
#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) *((unsigned long *)(v)) = 0
static void
-fxt1_decode_1HI (unsigned char *code, int t, unsigned char *rgba)
+fxt1_decode_1HI (const GLubyte *code, GLint t, GLchan *rgba)
{
- const unsigned long *cc;
+ const GLuint *cc;
t *= 3;
- cc = (unsigned long *)(code + t / 8);
+ cc = (const GLuint *)(code + t / 8);
t = (cc[0] >> (t & 7)) & 7;
if (t == 7) {
- ZERO_4UBV(rgba);
+ rgba[RCOMP] = rgba[GCOMP] = rgba[BCOMP] = rgba[ACOMP] = 0;
} else {
- cc = (unsigned long *)(code + 12);
+ 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 (unsigned char *code, int t, unsigned char *rgba)
+fxt1_decode_1CHROMA (const GLubyte *code, GLint t, GLchan *rgba)
{
- const unsigned long *cc;
- unsigned long kk;
+ const GLuint *cc;
+ GLuint kk;
- cc = (unsigned long *)code;
+ cc = (const GLuint *)code;
if (t & 16) {
cc++;
t &= 15;
t = (cc[0] >> (t * 2)) & 3;
t *= 15;
- cc = (unsigned long *)(code + 8 + t / 8);
+ 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 (unsigned char *code, int t, unsigned char *rgba)
+fxt1_decode_1MIXED (const GLubyte *code, GLint t, GLchan *rgba)
{
- const unsigned long *cc;
- unsigned int col[2][3];
- int glsb, selb;
+ const GLuint *cc;
+ GLuint col[2][3];
+ GLint glsb, selb;
- cc = (unsigned long *)code;
+ cc = (const GLuint *)code;
if (t & 16) {
t &= 15;
t = (cc[1] >> (t * 2)) & 3;
/* col 2 */
- col[0][BCOMP] = (*(unsigned long *)(code + 11)) >> 6;
+ col[0][BCOMP] = (*(const GLuint *)(code + 11)) >> 6;
col[0][GCOMP] = CC_SEL(cc, 99);
col[0][RCOMP] = CC_SEL(cc, 104);
/* col 3 */
/* 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 (unsigned char *code, int t, unsigned char *rgba)
+fxt1_decode_1ALPHA (const GLubyte *code, GLint t, GLchan *rgba)
{
- const unsigned long *cc;
+ const GLuint *cc;
+ GLubyte r, g, b, a;
- cc = (unsigned long *)code;
+ cc = (const GLuint *)code;
if (CC_SEL(cc, 124) & 1) {
/* lerp == 1 */
- unsigned int col0[4];
+ GLuint col0[4];
if (t & 16) {
t &= 15;
t = (cc[1] >> (t * 2)) & 3;
/* col 2 */
- col0[BCOMP] = (*(unsigned long *)(code + 11)) >> 6;
+ col0[BCOMP] = (*(const GLuint *)(code + 11)) >> 6;
col0[GCOMP] = CC_SEL(cc, 99);
col0[RCOMP] = CC_SEL(cc, 104);
col0[ACOMP] = CC_SEL(cc, 119);
}
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 */
t = (cc[0] >> (t * 2)) & 3;
if (t == 3) {
- ZERO_4UBV(rgba);
+ /* zero */
+ r = g = b = a = 0;
} else {
- unsigned long kk;
- cc = (unsigned long *)code;
- rgba[ACOMP] = UP5(cc[3] >> (t * 5 + 13));
+ GLuint kk;
+ cc = (const GLuint *)code;
+ a = UP5(cc[3] >> (t * 5 + 13));
t *= 15;
- cc = (unsigned long *)(code + 8 + t / 8);
+ 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
-fxt1_decode_1 (const void *texture, int width,
- int i, int j, unsigned char *rgba)
+fxt1_decode_1 (const void *texture, GLint stride, /* in pixels */
+ GLint i, GLint j, GLchan *rgba)
{
- static void (*decode_1[]) (unsigned char *, int, unsigned char *) = {
+ 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" */
fxt1_decode_1MIXED /* mixed = "1??" */
};
- unsigned char *code = (unsigned char *)texture +
- ((j / 4) * (width / 8) + (i / 8)) * 16;
- int mode = CC_SEL((unsigned long *)code, 125);
- int t = i & 7;
+ const GLubyte *code = (const GLubyte *)texture +
+ ((j / 4) * (stride / 8) + (i / 8)) * 16;
+ GLint mode = CC_SEL(code, 125);
+ GLint t = i & 7;
if (t & 4) {
t += 12;
projects / mesa.git / blobdiff