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-rw-r--r--src/mesa/main/format_unpack.c26
-rw-r--r--src/mesa/main/format_unpack.h3
-rw-r--r--src/mesa/main/texcompress_s3tc.c52
3 files changed, 29 insertions, 52 deletions
diff --git a/src/mesa/main/format_unpack.c b/src/mesa/main/format_unpack.c
index 7bbdebb3aa4..d34a27b8273 100644
--- a/src/mesa/main/format_unpack.c
+++ b/src/mesa/main/format_unpack.c
@@ -57,8 +57,8 @@ struct z32f_x24s8
* linear RGB value in [0, 1].
* Implemented with a 256-entry lookup table.
*/
-static inline GLfloat
-nonlinear_to_linear(GLubyte cs8)
+GLfloat
+_mesa_nonlinear_to_linear(GLubyte cs8)
{
static GLfloat table[256];
static GLboolean tableReady = GL_FALSE;
@@ -742,9 +742,9 @@ unpack_SRGB8(const void *src, GLfloat dst[][4], GLuint n)
const GLubyte *s = (const GLubyte *) src;
GLuint i;
for (i = 0; i < n; i++) {
- dst[i][RCOMP] = nonlinear_to_linear(s[i*3+2]);
- dst[i][GCOMP] = nonlinear_to_linear(s[i*3+1]);
- dst[i][BCOMP] = nonlinear_to_linear(s[i*3+0]);
+ dst[i][RCOMP] = _mesa_nonlinear_to_linear(s[i*3+2]);
+ dst[i][GCOMP] = _mesa_nonlinear_to_linear(s[i*3+1]);
+ dst[i][BCOMP] = _mesa_nonlinear_to_linear(s[i*3+0]);
dst[i][ACOMP] = 1.0F;
}
}
@@ -755,9 +755,9 @@ unpack_SRGBA8(const void *src, GLfloat dst[][4], GLuint n)
const GLuint *s = ((const GLuint *) src);
GLuint i;
for (i = 0; i < n; i++) {
- dst[i][RCOMP] = nonlinear_to_linear( (s[i] >> 24) );
- dst[i][GCOMP] = nonlinear_to_linear( (s[i] >> 16) & 0xff );
- dst[i][BCOMP] = nonlinear_to_linear( (s[i] >> 8) & 0xff );
+ dst[i][RCOMP] = _mesa_nonlinear_to_linear( (s[i] >> 24) );
+ dst[i][GCOMP] = _mesa_nonlinear_to_linear( (s[i] >> 16) & 0xff );
+ dst[i][BCOMP] = _mesa_nonlinear_to_linear( (s[i] >> 8) & 0xff );
dst[i][ACOMP] = UBYTE_TO_FLOAT( s[i] & 0xff ); /* linear! */
}
}
@@ -768,9 +768,9 @@ unpack_SARGB8(const void *src, GLfloat dst[][4], GLuint n)
const GLuint *s = ((const GLuint *) src);
GLuint i;
for (i = 0; i < n; i++) {
- dst[i][RCOMP] = nonlinear_to_linear( (s[i] >> 16) & 0xff );
- dst[i][GCOMP] = nonlinear_to_linear( (s[i] >> 8) & 0xff );
- dst[i][BCOMP] = nonlinear_to_linear( (s[i] ) & 0xff );
+ dst[i][RCOMP] = _mesa_nonlinear_to_linear( (s[i] >> 16) & 0xff );
+ dst[i][GCOMP] = _mesa_nonlinear_to_linear( (s[i] >> 8) & 0xff );
+ dst[i][BCOMP] = _mesa_nonlinear_to_linear( (s[i] ) & 0xff );
dst[i][ACOMP] = UBYTE_TO_FLOAT( s[i] >> 24 ); /* linear! */
}
}
@@ -783,7 +783,7 @@ unpack_SL8(const void *src, GLfloat dst[][4], GLuint n)
for (i = 0; i < n; i++) {
dst[i][RCOMP] =
dst[i][GCOMP] =
- dst[i][BCOMP] = nonlinear_to_linear(s[i]);
+ dst[i][BCOMP] = _mesa_nonlinear_to_linear(s[i]);
dst[i][ACOMP] = 1.0F;
}
}
@@ -796,7 +796,7 @@ unpack_SLA8(const void *src, GLfloat dst[][4], GLuint n)
for (i = 0; i < n; i++) {
dst[i][RCOMP] =
dst[i][GCOMP] =
- dst[i][BCOMP] = nonlinear_to_linear(s[i] & 0xff);
+ dst[i][BCOMP] = _mesa_nonlinear_to_linear(s[i] & 0xff);
dst[i][ACOMP] = UBYTE_TO_FLOAT(s[i] >> 8); /* linear! */
}
}
diff --git a/src/mesa/main/format_unpack.h b/src/mesa/main/format_unpack.h
index aad800dd15a..29c526319bc 100644
--- a/src/mesa/main/format_unpack.h
+++ b/src/mesa/main/format_unpack.h
@@ -24,6 +24,9 @@
#ifndef FORMAT_UNPACK_H
#define FORMAT_UNPACK_H
+extern GLfloat
+_mesa_nonlinear_to_linear(GLubyte cs8);
+
extern void
_mesa_unpack_rgba_row(gl_format format, GLuint n,
const void *src, GLfloat dst[][4]);
diff --git a/src/mesa/main/texcompress_s3tc.c b/src/mesa/main/texcompress_s3tc.c
index da772596488..476b998e078 100644
--- a/src/mesa/main/texcompress_s3tc.c
+++ b/src/mesa/main/texcompress_s3tc.c
@@ -45,6 +45,7 @@
#include "texcompress_s3tc.h"
#include "texstore.h"
#include "swrast/s_context.h"
+#include "format_unpack.h"
#if defined(_WIN32) || defined(WIN32)
@@ -57,33 +58,6 @@
#define DXTN_LIBNAME "libtxc_dxtn.so"
#endif
-/**
- * Convert an 8-bit sRGB value from non-linear space to a
- * linear RGB value in [0, 1].
- * Implemented with a 256-entry lookup table.
- */
-static inline GLfloat
-nonlinear_to_linear(GLubyte cs8)
-{
- static GLfloat table[256];
- static GLboolean tableReady = GL_FALSE;
- if (!tableReady) {
- /* compute lookup table now */
- GLuint i;
- for (i = 0; i < 256; i++) {
- const GLfloat cs = UBYTE_TO_FLOAT(i);
- if (cs <= 0.04045) {
- table[i] = cs / 12.92f;
- }
- else {
- table[i] = (GLfloat) pow((cs + 0.055) / 1.055, 2.4);
- }
- }
- tableReady = GL_TRUE;
- }
- return table[cs8];
-}
-
typedef void (*dxtFetchTexelFuncExt)( GLint srcRowstride, GLubyte *pixdata, GLint col, GLint row, GLvoid *texelOut );
static dxtFetchTexelFuncExt fetch_ext_rgb_dxt1 = NULL;
@@ -476,9 +450,9 @@ _mesa_fetch_texel_srgb_dxt1(const struct swrast_texture_image *texImage,
/* just sample as GLubyte and convert to float here */
GLubyte rgba[4];
fetch_texel_2d_rgb_dxt1(texImage, i, j, k, rgba);
- texel[RCOMP] = nonlinear_to_linear(rgba[RCOMP]);
- texel[GCOMP] = nonlinear_to_linear(rgba[GCOMP]);
- texel[BCOMP] = nonlinear_to_linear(rgba[BCOMP]);
+ texel[RCOMP] = _mesa_nonlinear_to_linear(rgba[RCOMP]);
+ texel[GCOMP] = _mesa_nonlinear_to_linear(rgba[GCOMP]);
+ texel[BCOMP] = _mesa_nonlinear_to_linear(rgba[BCOMP]);
texel[ACOMP] = UBYTE_TO_FLOAT(rgba[ACOMP]);
}
@@ -489,9 +463,9 @@ _mesa_fetch_texel_srgba_dxt1(const struct swrast_texture_image *texImage,
/* just sample as GLubyte and convert to float here */
GLubyte rgba[4];
fetch_texel_2d_rgba_dxt1(texImage, i, j, k, rgba);
- texel[RCOMP] = nonlinear_to_linear(rgba[RCOMP]);
- texel[GCOMP] = nonlinear_to_linear(rgba[GCOMP]);
- texel[BCOMP] = nonlinear_to_linear(rgba[BCOMP]);
+ texel[RCOMP] = _mesa_nonlinear_to_linear(rgba[RCOMP]);
+ texel[GCOMP] = _mesa_nonlinear_to_linear(rgba[GCOMP]);
+ texel[BCOMP] = _mesa_nonlinear_to_linear(rgba[BCOMP]);
texel[ACOMP] = UBYTE_TO_FLOAT(rgba[ACOMP]);
}
@@ -502,9 +476,9 @@ _mesa_fetch_texel_srgba_dxt3(const struct swrast_texture_image *texImage,
/* just sample as GLubyte and convert to float here */
GLubyte rgba[4];
fetch_texel_2d_rgba_dxt3(texImage, i, j, k, rgba);
- texel[RCOMP] = nonlinear_to_linear(rgba[RCOMP]);
- texel[GCOMP] = nonlinear_to_linear(rgba[GCOMP]);
- texel[BCOMP] = nonlinear_to_linear(rgba[BCOMP]);
+ texel[RCOMP] = _mesa_nonlinear_to_linear(rgba[RCOMP]);
+ texel[GCOMP] = _mesa_nonlinear_to_linear(rgba[GCOMP]);
+ texel[BCOMP] = _mesa_nonlinear_to_linear(rgba[BCOMP]);
texel[ACOMP] = UBYTE_TO_FLOAT(rgba[ACOMP]);
}
@@ -515,8 +489,8 @@ _mesa_fetch_texel_srgba_dxt5(const struct swrast_texture_image *texImage,
/* just sample as GLubyte and convert to float here */
GLubyte rgba[4];
fetch_texel_2d_rgba_dxt5(texImage, i, j, k, rgba);
- texel[RCOMP] = nonlinear_to_linear(rgba[RCOMP]);
- texel[GCOMP] = nonlinear_to_linear(rgba[GCOMP]);
- texel[BCOMP] = nonlinear_to_linear(rgba[BCOMP]);
+ texel[RCOMP] = _mesa_nonlinear_to_linear(rgba[RCOMP]);
+ texel[GCOMP] = _mesa_nonlinear_to_linear(rgba[GCOMP]);
+ texel[BCOMP] = _mesa_nonlinear_to_linear(rgba[BCOMP]);
texel[ACOMP] = UBYTE_TO_FLOAT(rgba[ACOMP]);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 05:22:12 +0000