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-rw-r--r--src/mesa/main/texformat_tmp.h91
1 files changed, 80 insertions, 11 deletions
diff --git a/src/mesa/main/texformat_tmp.h b/src/mesa/main/texformat_tmp.h
index bea9d87a86..35f89d5493 100644
--- a/src/mesa/main/texformat_tmp.h
+++ b/src/mesa/main/texformat_tmp.h
@@ -1,10 +1,10 @@
-/* $Id: texformat_tmp.h,v 1.6 2002/06/15 02:55:22 brianp Exp $ */
+/* $Id: texformat_tmp.h,v 1.7 2002/09/21 16:51:25 brianp Exp $ */
/*
* Mesa 3-D graphics library
- * Version: 3.5
+ * Version: 4.1
*
- * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2002 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"),
@@ -191,7 +191,8 @@ static void FETCH(rgb565)( const struct gl_texture_image *texImage,
GLint i, GLint j, GLint k, GLvoid *texel )
{
const GLushort *src = USHORT_SRC( texImage, i, j, k );
- GLchan *rgba = (GLchan *) texel; GLushort s = *src;
+ const GLushort s = *src;
+ GLchan *rgba = (GLchan *) texel;
rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf8) * 255 / 0xf8 );
rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 3) & 0xfc) * 255 / 0xfc );
rgba[BCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xf8) * 255 / 0xf8 );
@@ -202,7 +203,8 @@ static void FETCH(argb4444)( const struct gl_texture_image *texImage,
GLint i, GLint j, GLint k, GLvoid *texel )
{
const GLushort *src = USHORT_SRC( texImage, i, j, k );
- GLchan *rgba = (GLchan *) texel; GLushort s = *src;
+ const GLushort s = *src;
+ GLchan *rgba = (GLchan *) texel;
rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf) * 255 / 0xf );
rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 4) & 0xf) * 255 / 0xf );
rgba[BCOMP] = UBYTE_TO_CHAN( ((s ) & 0xf) * 255 / 0xf );
@@ -213,7 +215,8 @@ static void FETCH(argb1555)( const struct gl_texture_image *texImage,
GLint i, GLint j, GLint k, GLvoid *texel )
{
const GLushort *src = USHORT_SRC( texImage, i, j, k );
- GLchan *rgba = (GLchan *) texel; GLushort s = *src;
+ const GLushort s = *src;
+ GLchan *rgba = (GLchan *) texel;
rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 10) & 0x1f) * 255 / 0x1f );
rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 5) & 0x1f) * 255 / 0x1f );
rgba[BCOMP] = UBYTE_TO_CHAN( ((s ) & 0x1f) * 255 / 0x1f );
@@ -235,7 +238,8 @@ static void FETCH(rgb332)( const struct gl_texture_image *texImage,
GLint i, GLint j, GLint k, GLvoid *texel )
{
const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 );
- GLchan *rgba = (GLchan *) texel; GLubyte s = *src;
+ const GLubyte s = *src;
+ GLchan *rgba = (GLchan *) texel;
rgba[RCOMP] = UBYTE_TO_CHAN( ((s ) & 0xe0) * 255 / 0xe0 );
rgba[GCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xe0) * 255 / 0xe0 );
rgba[BCOMP] = UBYTE_TO_CHAN( ((s << 5) & 0xc0) * 255 / 0xc0 );
@@ -283,6 +287,67 @@ static void FETCH(ci8)( const struct gl_texture_image *texImage,
*index = UBYTE_TO_CHAN( *src );
}
+/* XXX this may break if GLchan != GLubyte */
+static void FETCH(ycbcr)( const struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, GLvoid *texel )
+{
+ const GLushort *src0 = USHORT_SRC( texImage, (i & ~1), j, k ); /* even */
+ const GLushort *src1 = src0 + 1; /* odd */
+ const GLubyte y0 = (*src0 >> 8) & 0xff; /* luminance */
+ const GLubyte cb = *src0 & 0xff; /* chroma U */
+ const GLubyte y1 = (*src1 >> 8) & 0xff; /* luminance */
+ const GLubyte cr = *src1 & 0xff; /* chroma V */
+ GLchan *rgba = (GLchan *) texel;
+ GLint r, g, b;
+ if (i & 1) {
+ /* odd pixel: use y1,cr,cb */
+ r = (GLint) (1.164 * (y1-16) + 1.596 * (cr-128));
+ g = (GLint) (1.164 * (y1-16) - 0.813 * (cr-128) - 0.391 * (cb-128));
+ b = (GLint) (1.164 * (y1-16) + 2.018 * (cb-128));
+ }
+ else {
+ /* even pixel: use y0,cr,cb */
+ r = (GLint) (1.164 * (y0-16) + 1.596 * (cr-128));
+ g = (GLint) (1.164 * (y0-16) - 0.813 * (cr-128) - 0.391 * (cb-128));
+ b = (GLint) (1.164 * (y0-16) + 2.018 * (cb-128));
+ }
+ rgba[RCOMP] = CLAMP(r, 0, CHAN_MAX);
+ rgba[GCOMP] = CLAMP(g, 0, CHAN_MAX);
+ rgba[BCOMP] = CLAMP(b, 0, CHAN_MAX);
+ rgba[ACOMP] = CHAN_MAX;
+}
+
+/* XXX this may break if GLchan != GLubyte */
+static void FETCH(ycbcr_rev)( const struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, GLvoid *texel )
+{
+ const GLushort *src0 = USHORT_SRC( texImage, (i & ~1), j, k ); /* even */
+ const GLushort *src1 = src0 + 1; /* odd */
+ const GLubyte y0 = *src0 & 0xff; /* luminance */
+ const GLubyte cr = (*src0 >> 8) & 0xff; /* chroma U */
+ const GLubyte y1 = *src1 & 0xff; /* luminance */
+ const GLubyte cb = (*src1 >> 8) & 0xff; /* chroma V */
+ GLchan *rgba = (GLchan *) texel;
+ GLint r, g, b;
+ if (i & 1) {
+ /* odd pixel: use y1,cr,cb */
+ r = (GLint) (1.164 * (y1-16) + 1.596 * (cr-128));
+ g = (GLint) (1.164 * (y1-16) - 0.813 * (cr-128) - 0.391 * (cb-128));
+ b = (GLint) (1.164 * (y1-16) + 2.018 * (cb-128));
+ }
+ else {
+ /* even pixel: use y0,cr,cb */
+ r = (GLint) (1.164 * (y0-16) + 1.596 * (cr-128));
+ g = (GLint) (1.164 * (y0-16) - 0.813 * (cr-128) - 0.391 * (cb-128));
+ b = (GLint) (1.164 * (y0-16) + 2.018 * (cb-128));
+ }
+ rgba[RCOMP] = CLAMP(r, 0, CHAN_MAX);
+ rgba[GCOMP] = CLAMP(g, 0, CHAN_MAX);
+ rgba[BCOMP] = CLAMP(b, 0, CHAN_MAX);
+ rgba[ACOMP] = CHAN_MAX;
+}
+
+
/* big-endian */
@@ -324,7 +389,8 @@ static void FETCH(bgr565)( const struct gl_texture_image *texImage,
GLint i, GLint j, GLint k, GLvoid *texel )
{
const GLushort *src = USHORT_SRC( texImage, i, j, k );
- GLchan *rgba = (GLchan *) texel; GLushort s = *src;
+ const GLushort s = *src;
+ GLchan *rgba = (GLchan *) texel;
rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf8) * 255 / 0xf8 );
rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 3) & 0xfc) * 255 / 0xfc );
rgba[BCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xf8) * 255 / 0xf8 );
@@ -335,7 +401,8 @@ static void FETCH(bgra4444)( const struct gl_texture_image *texImage,
GLint i, GLint j, GLint k, GLvoid *texel )
{
const GLushort *src = USHORT_SRC( texImage, i, j, k );
- GLchan *rgba = (GLchan *) texel; GLushort s = *src;
+ const GLushort s = *src;
+ GLchan *rgba = (GLchan *) texel;
rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 8) & 0xf) * 255 / 0xf );
rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 4) & 0xf) * 255 / 0xf );
rgba[BCOMP] = UBYTE_TO_CHAN( ((s ) & 0xf) * 255 / 0xf );
@@ -346,7 +413,8 @@ static void FETCH(bgra5551)( const struct gl_texture_image *texImage,
GLint i, GLint j, GLint k, GLvoid *texel )
{
const GLushort *src = USHORT_SRC( texImage, i, j, k );
- GLchan *rgba = (GLchan *) texel; GLushort s = *src;
+ const GLushort s = *src;
+ GLchan *rgba = (GLchan *) texel;
rgba[RCOMP] = UBYTE_TO_CHAN( ((s >> 10) & 0x1f) * 255 / 0x1f );
rgba[GCOMP] = UBYTE_TO_CHAN( ((s >> 5) & 0x1f) * 255 / 0x1f );
rgba[BCOMP] = UBYTE_TO_CHAN( ((s ) & 0x1f) * 255 / 0x1f );
@@ -368,7 +436,8 @@ static void FETCH(bgr233)( const struct gl_texture_image *texImage,
GLint i, GLint j, GLint k, GLvoid *texel )
{
const GLubyte *src = UBYTE_SRC( texImage, i, j, k, 1 );
- GLchan *rgba = (GLchan *) texel; GLubyte s = *src;
+ const GLubyte s = *src;
+ GLchan *rgba = (GLchan *) texel;
rgba[RCOMP] = UBYTE_TO_CHAN( ((s ) & 0xe0) * 255 / 0xe0 );
rgba[GCOMP] = UBYTE_TO_CHAN( ((s << 3) & 0xe0) * 255 / 0xe0 );
rgba[BCOMP] = UBYTE_TO_CHAN( ((s << 5) & 0xc0) * 255 / 0xc0 );
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-28 15:22:12 +0000