-/* $Id: texutil.c,v 1.29 2002/06/05 16:48:54 brianp Exp $ */
/*
* Mesa 3-D graphics library
- * Version: 4.0.3
+ * Version: 5.1
*
- * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2003 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"),
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
- * Gareth Hughes <gareth@valinux.com>
+ * Gareth Hughes
*/
-#ifdef PC_HEADER
-#include "all.h"
-#else
+/*
+ * Description:
+ * Functions for texture image conversion. This takes care of converting
+ * typical GL_RGBA/GLubyte textures into hardware-specific formats.
+ * We can handle non-standard row strides and pixel unpacking parameters.
+ */
+
+
#include "glheader.h"
+#include "colormac.h"
#include "context.h"
#include "enums.h"
#include "image.h"
+#include "imports.h"
#include "macros.h"
-#include "mem.h"
#include "mtypes.h"
#include "texformat.h"
#include "texutil.h"
-#endif
+
#define DEBUG_TEXUTIL 0
-#if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
+#ifdef MESA_BIG_ENDIAN
#define APPEND16( a, b ) ( (a) << 16 | (b) )
#else
#define APPEND16( a, b ) ( (a) | (b) << 16 )
#endif
-struct gl_texture_convert {
+struct convert_info {
GLint xoffset, yoffset, zoffset; /* Subimage offset */
GLint width, height, depth; /* Subimage region */
GLint index;
};
-typedef GLboolean (*convert_func)( struct gl_texture_convert *convert );
+typedef GLboolean (*convert_func)( const struct convert_info *convert );
+/* bitvalues for convert->index */
#define CONVERT_STRIDE_BIT 0x1
#define CONVERT_UNPACKING_BIT 0x2
/* =============================================================
- * RGBA8888 textures:
+ * Convert to RGBA8888 textures:
*/
#define DST_TYPE GLuint
#define CONVERT_RGBA8888( name ) \
static GLboolean \
-convert_##name##_rgba8888( struct gl_texture_convert *convert ) \
+convert_##name##_rgba8888( const struct convert_info *convert ) \
{ \
convert_func *tab; \
GLint index = convert->index; \
/* =============================================================
- * ARGB8888 textures:
+ * Convert to ARGB8888 textures:
*/
#define DST_TYPE GLuint
#define CONVERT_ARGB8888( name ) \
static GLboolean \
-convert_##name##_argb8888( struct gl_texture_convert *convert ) \
+convert_##name##_argb8888( const struct convert_info *convert ) \
{ \
convert_func *tab; \
GLint index = convert->index; \
/* =============================================================
- * RGB888 textures:
+ * Convert to RGB888 textures:
*/
static GLboolean
-convert_texsubimage2d_rgb888( struct gl_texture_convert *convert )
+convert_texsubimage2d_rgb888( const struct convert_info *convert )
{
/* This is a placeholder for now...
*/
}
static GLboolean
-convert_texsubimage3d_rgb888( struct gl_texture_convert *convert )
+convert_texsubimage3d_rgb888( const struct convert_info *convert )
{
/* This is a placeholder for now...
*/
/* =============================================================
- * RGB565 textures:
+ * Convert to RGB565 textures:
*/
#define DST_TYPE GLushort
#define CONVERT_RGB565( name ) \
static GLboolean \
-convert_##name##_rgb565( struct gl_texture_convert *convert ) \
+convert_##name##_rgb565( const struct convert_info *convert ) \
{ \
convert_func *tab; \
GLint index = convert->index; \
/* =============================================================
- * ARGB4444 textures:
+ * Convert to ARGB4444 textures:
*/
#define DST_TYPE GLushort
#define CONVERT_ARGB4444( name ) \
static GLboolean \
-convert_##name##_argb4444( struct gl_texture_convert *convert ) \
+convert_##name##_argb4444( const struct convert_info *convert ) \
{ \
convert_func *tab; \
GLint index = convert->index; \
/* =============================================================
- * ARGB1555 textures:
+ * Convert to ARGB1555 textures:
*/
#define DST_TYPE GLushort
#include "texutil_tmp.h"
-#if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
+#ifdef MESA_BIG_ENDIAN
#define CONVERT_TEXEL( dst, src ) \
{ const GLushort s = *(GLushort *)src; \
#define CONVERT_ARGB1555( name ) \
static GLboolean \
-convert_##name##_argb1555( struct gl_texture_convert *convert ) \
+convert_##name##_argb1555( const struct convert_info *convert ) \
{ \
convert_func *tab; \
GLint index = convert->index; \
#define CONVERT_AL88( name ) \
static GLboolean \
-convert_##name##_al88( struct gl_texture_convert *convert ) \
+convert_##name##_al88( const struct convert_info *convert ) \
{ \
convert_func *tab; \
GLint index = convert->index; \
/* =============================================================
- * RGB332 textures:
+ * Convert to RGB332 textures:
*/
static GLboolean
-convert_texsubimage2d_rgb332( struct gl_texture_convert *convert )
+convert_texsubimage2d_rgb332( const struct convert_info *convert )
{
/* This is a placeholder for now...
*/
}
static GLboolean
-convert_texsubimage3d_rgb332( struct gl_texture_convert *convert )
+convert_texsubimage3d_rgb332( const struct convert_info *convert )
{
/* This is a placeholder for now...
*/
#define CONVERT_CI8( name ) \
static GLboolean \
-convert_##name##_ci8( struct gl_texture_convert *convert ) \
+convert_##name##_ci8( const struct convert_info *convert ) \
{ \
convert_func *tab; \
GLint index = convert->index; \
CONVERT_CI8( texsubimage3d )
+/* =============================================================
+ * convert to YCBCR textures:
+ */
+
+#define DST_TYPE GLushort
+#define DST_TEXELS_PER_DWORD 2
+
+#define CONVERT_TEXEL( dst, src ) \
+ dst = (src[0] << 8) | src[1];
+
+#define CONVERT_DIRECT
+
+#define SRC_TEXEL_BYTES 2
+
+#define TAG(x) x##_ycbcr_direct
+#include "texutil_tmp.h"
+
+
+#define CONVERT_YCBCR( name ) \
+static GLboolean \
+convert_##name##_ycbcr( const struct convert_info *convert ) \
+{ \
+ convert_func *tab; \
+ GLint index = convert->index; \
+ \
+ if (convert->format != GL_YCBCR_MESA) { \
+ /* Can't handle this source format/type combination */ \
+ return GL_FALSE; \
+ } \
+ tab = name##_tab_ycbcr_direct; \
+ \
+ return tab[index]( convert ); \
+}
+
+CONVERT_YCBCR( texsubimage2d )
+CONVERT_YCBCR( texsubimage3d )
+
+
+/* =============================================================
+ * convert to YCBCR_REV textures:
+ */
+
+#define DST_TYPE GLushort
+#define DST_TEXELS_PER_DWORD 2
+
+#define CONVERT_TEXEL( dst, src ) \
+ dst = (src[1] << 8) | src[0];
+
+#define CONVERT_DIRECT
+
+#define SRC_TEXEL_BYTES 2
+
+#define TAG(x) x##_ycbcr_rev_direct
+#include "texutil_tmp.h"
+
+
+#define CONVERT_YCBCR_REV( name ) \
+static GLboolean \
+convert_##name##_ycbcr_rev( const struct convert_info *convert ) \
+{ \
+ convert_func *tab; \
+ GLint index = convert->index; \
+ \
+ if (convert->format != GL_YCBCR_MESA) { \
+ /* Can't handle this source format/type combination */ \
+ return GL_FALSE; \
+ } \
+ tab = name##_tab_ycbcr_rev_direct; \
+ \
+ return tab[index]( convert ); \
+}
+
+CONVERT_YCBCR_REV( texsubimage2d )
+CONVERT_YCBCR_REV( texsubimage3d )
+
+
/* =============================================================
* Global entry points
*/
-static convert_func gl_convert_texsubimage2d_tab[] = {
+static convert_func convert_texsubimage2d_tab[] = {
convert_texsubimage2d_rgba8888,
convert_texsubimage2d_argb8888,
convert_texsubimage2d_rgb888,
convert_texsubimage2d_ci8,
convert_texsubimage2d_ci8,
convert_texsubimage2d_ci8,
+ convert_texsubimage2d_ycbcr,
+ convert_texsubimage2d_ycbcr_rev,
};
-static convert_func gl_convert_texsubimage3d_tab[] = {
+static convert_func convert_texsubimage3d_tab[] = {
convert_texsubimage3d_rgba8888,
convert_texsubimage3d_argb8888,
convert_texsubimage3d_rgb888,
convert_texsubimage3d_ci8,
convert_texsubimage3d_ci8,
convert_texsubimage3d_ci8,
+ convert_texsubimage3d_ycbcr,
+ convert_texsubimage3d_ycbcr_rev,
};
const struct gl_pixelstore_attrib *unpacking,
const GLvoid *srcImage, GLvoid *dstImage )
{
- struct gl_texture_convert convert;
+ struct convert_info convert;
ASSERT( unpacking );
ASSERT( srcImage );
ASSERT( dstImage );
ASSERT( mesaFormat >= MESA_FORMAT_RGBA8888 );
- ASSERT( mesaFormat <= MESA_FORMAT_CI8 );
+ ASSERT( mesaFormat <= MESA_FORMAT_YCBCR_REV );
/* Make it easier to pass all the parameters around.
*/
if ( convert_needs_unpacking( unpacking, format, type ) )
convert.index |= CONVERT_UNPACKING_BIT;
- return gl_convert_texsubimage2d_tab[mesaFormat]( &convert );
+ ASSERT(convert.index < 4);
+
+ return convert_texsubimage2d_tab[mesaFormat]( &convert );
}
* with the _mesa_transfer_teximage() function. That function will also
* do image transfer operations such as scale/bias and convolution.
*
- * Input:
+ * \param
* mesaFormat - one of the MESA_FORMAT_* values from texformat.h
* xoffset, yoffset - position in dest image to put data
* width, height - incoming image size, also size of dest region.
* destImage - pointer to dest image
*/
GLboolean
-_mesa_convert_texsubimage2d( GLint mesaFormat,
+_mesa_convert_texsubimage2d( GLint mesaFormat, /* dest */
GLint xoffset, GLint yoffset,
GLint width, GLint height,
GLint destImageWidth,
- GLenum format, GLenum type,
+ GLenum format, GLenum type, /* source */
const struct gl_pixelstore_attrib *unpacking,
const GLvoid *srcImage, GLvoid *dstImage )
{
- struct gl_texture_convert convert;
+ struct convert_info convert;
ASSERT( unpacking );
ASSERT( srcImage );
ASSERT( dstImage );
ASSERT( mesaFormat >= MESA_FORMAT_RGBA8888 );
- ASSERT( mesaFormat <= MESA_FORMAT_CI8 );
+ ASSERT( mesaFormat <= MESA_FORMAT_YCBCR_REV );
/* Make it easier to pass all the parameters around.
*/
if ( width != destImageWidth )
convert.index |= CONVERT_STRIDE_BIT;
- return gl_convert_texsubimage2d_tab[mesaFormat]( &convert );
+ return convert_texsubimage2d_tab[mesaFormat]( &convert );
}
GLboolean
-_mesa_convert_texsubimage3d( GLint mesaFormat,
+_mesa_convert_texsubimage3d( GLint mesaFormat, /* dest */
GLint xoffset, GLint yoffset, GLint zoffset,
GLint width, GLint height, GLint depth,
GLint dstImageWidth, GLint dstImageHeight,
- GLenum format, GLenum type,
+ GLenum format, GLenum type, /* source */
const struct gl_pixelstore_attrib *unpacking,
const GLvoid *srcImage, GLvoid *dstImage )
{
- struct gl_texture_convert convert;
+ struct convert_info convert;
ASSERT( unpacking );
ASSERT( srcImage );
ASSERT( dstImage );
ASSERT( mesaFormat >= MESA_FORMAT_RGBA8888 );
- ASSERT( mesaFormat <= MESA_FORMAT_CI8 );
+ ASSERT( mesaFormat <= MESA_FORMAT_YCBCR_REV );
/* Make it easier to pass all the parameters around.
*/
if ( width != dstImageWidth || height != dstImageHeight )
convert.index |= CONVERT_STRIDE_BIT;
- return gl_convert_texsubimage3d_tab[mesaFormat]( &convert );
+ return convert_texsubimage3d_tab[mesaFormat]( &convert );
}
const TYPE *src = (const TYPE *)srcImage; \
TYPE *dst = (TYPE *)dstImage; \
\
- if ( srcHeight <= dstHeight ) { \
+ if ( srcHeight < dstHeight ) { \
const GLint hScale = dstHeight / srcHeight; \
- if ( srcWidth <= dstWidth ) { \
+ if ( srcWidth < dstWidth ) { \
const GLint wScale = dstWidth / srcWidth; \
INNER_LOOP( TYPE, /, / ); \
} \
} \
else { \
const GLint hScale = srcHeight / dstHeight; \
- if ( srcWidth <= dstWidth ) { \
+ if ( srcWidth < dstWidth ) { \
const GLint wScale = dstWidth / srcWidth; \
INNER_LOOP( TYPE, *, / ); \
} \
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