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/* $Id: texutil_tmp.h,v 1.1 2003-02-28 11:42:06 pj Exp $ */
/*
* Mesa 3-D graphics library
* Version: 4.0.2
*
* 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"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Author:
* Gareth Hughes
*/
/*
* For 2D and 3D texture images, we generate functions for
* - conversion without pixel unpacking and standard stride
* - conversion without pixel unpacking and non-standard stride
* - conversion with pixel unpacking and standard stride
* - conversion with pixel unpacking and non-standard stride
*
*
* Macros which need to be defined before including this file:
* TAG(x) - the function name wrapper
* DST_TYPE - the destination texel datatype (GLuint, GLushort, etc)
* DST_TEXELS_PER_DWORD - number of dest texels that'll fit in 4 bytes
* CONVERT_TEXEL - code to convert from source to dest texel
* CONVER_TEXEL_DWORD - if multiple texels fit in 4 bytes, this macros
* will convert/store multiple texels at once
* CONVERT_DIRECT - if defined, just memcpy texels from src to dest
* SRC_TEXEL_BYTES - bytes per source texel
* PRESERVE_DST_TYPE - if defined, don't undefined these macros at end
*/
#define DST_TEXEL_BYTES (4 / DST_TEXELS_PER_DWORD)
#define DST_ROW_BYTES (convert->width * DST_TEXEL_BYTES)
#define DST_ROW_STRIDE (convert->dstImageWidth * DST_TEXEL_BYTES)
#define DST_IMG_STRIDE (convert->dstImageWidth * \
convert->dstImageHeight * DST_TEXEL_BYTES)
/* =============================================================
* PRE: No pixelstore attribs, width == dstImageWidth.
*/
static GLboolean
TAG(texsubimage2d)( const struct convert_info *convert )
{
const GLubyte *src = (const GLubyte *)convert->srcImage;
GLuint *dst = (GLuint *)((GLubyte *)convert->dstImage +
(convert->yoffset * convert->dstImageWidth +
convert->xoffset) * DST_TEXEL_BYTES);
#if DEBUG_TEXUTIL
_mesa_debug( NULL, __FUNCTION__ "\n" );
#endif
#ifdef CONVERT_DIRECT
MEMCPY( dst, src, convert->height * DST_ROW_BYTES );
#else
{
const GLint texels = convert->width * convert->height;
const GLint dwords = texels / DST_TEXELS_PER_DWORD;
const GLint leftover = texels - dwords * DST_TEXELS_PER_DWORD;
GLint i;
for ( i = 0 ; i < dwords ; i++ ) {
CONVERT_TEXEL_DWORD( *dst++, src );
src += SRC_TEXEL_BYTES * DST_TEXELS_PER_DWORD;
}
for ( i = 0; i < leftover; i++ ) {
CONVERT_TEXEL( *dst++, src );
src += SRC_TEXEL_BYTES;
}
}
#endif
return GL_TRUE;
}
/* PRE: As above, height == dstImageHeight also.
*/
static GLboolean
TAG(texsubimage3d)( const struct convert_info *convert )
{
const GLubyte *src = (const GLubyte *)convert->srcImage;
GLuint *dst = (GLuint *)((GLubyte *)convert->dstImage +
((convert->zoffset * convert->height +
convert->yoffset) * convert->width +
convert->xoffset) * DST_TEXEL_BYTES);
#if DEBUG_TEXUTIL
_mesa_debug( NULL, __FUNCTION__ "\n" );
#endif
#ifdef CONVERT_DIRECT
MEMCPY( dst, src, convert->depth * convert->height * DST_ROW_BYTES );
#else
{
const GLint texels = convert->width * convert->height * convert->depth;
const GLint dwords = texels / DST_TEXELS_PER_DWORD;
const GLint leftover = texels - dwords * DST_TEXELS_PER_DWORD;
GLint i;
for ( i = 0 ; i < dwords ; i++ ) {
CONVERT_TEXEL_DWORD( *dst++, src );
src += SRC_TEXEL_BYTES * DST_TEXELS_PER_DWORD;
}
for ( i = 0; i < leftover; i++ ) {
CONVERT_TEXEL( *dst++, src );
src += SRC_TEXEL_BYTES;
}
}
#endif
return GL_TRUE;
}
/* =============================================================
* PRE: No pixelstore attribs, width != dstImageWidth.
*/
static GLboolean
TAG(texsubimage2d_stride)( const struct convert_info *convert )
{
const GLubyte *src = (const GLubyte *)convert->srcImage;
DST_TYPE *dst = (DST_TYPE *)((GLubyte *)convert->dstImage +
(convert->yoffset * convert->dstImageWidth +
convert->xoffset) * DST_TEXEL_BYTES);
GLint adjust;
GLint row, col;
adjust = convert->dstImageWidth - convert->width;
#if DEBUG_TEXUTIL
_mesa_debug( NULL, __FUNCTION__ ":\n" );
_mesa_debug( NULL, " x=%d y=%d w=%d h=%d s=%d\n",
convert->xoffset, convert->yoffset, convert->width,
convert->height, convert->dstImageWidth );
_mesa_debug( NULL, " adjust=%d\n", adjust );
#endif
for ( row = 0 ; row < convert->height ; row++ ) {
for ( col = 0 ; col < convert->width ; col++ ) {
CONVERT_TEXEL( *dst++, src );
src += SRC_TEXEL_BYTES;
}
dst += adjust;
}
return GL_TRUE;
}
/* PRE: As above, or height != dstImageHeight also.
*/
static GLboolean
TAG(texsubimage3d_stride)( const struct convert_info *convert )
{
const GLubyte *src = (const GLubyte *)convert->srcImage;
DST_TYPE *dst = (DST_TYPE *)((GLubyte *)convert->dstImage +
((convert->zoffset * convert->dstImageHeight +
convert->yoffset) * convert->dstImageWidth +
convert->xoffset) * DST_TEXEL_BYTES);
GLint adjust;
GLint row, col, img;
adjust = convert->dstImageWidth - convert->width;
#if DEBUG_TEXUTIL
_mesa_debug( NULL, __FUNCTION__ ":\n" );
_mesa_debug( NULL, " x=%d y=%d w=%d h=%d s=%d\n",
convert->xoffset, convert->yoffset, convert->width,
convert->height, convert->dstImageWidth );
_mesa_debug( NULL, " adjust=%d\n", adjust );
#endif
for ( img = 0 ; img < convert->depth ; img++ ) {
for ( row = 0 ; row < convert->height ; row++ ) {
for ( col = 0 ; col < convert->width ; col++ ) {
CONVERT_TEXEL( *dst++, src );
src += SRC_TEXEL_BYTES;
}
dst += adjust;
}
/* FIXME: ... */
}
return GL_TRUE;
}
/* =============================================================
* PRE: Require pixelstore attribs, width == dstImageWidth.
*/
static GLboolean
TAG(texsubimage2d_unpack)( const struct convert_info *convert )
{
const GLubyte *src = (const GLubyte *)
_mesa_image_address( convert->unpacking, convert->srcImage,
convert->width, convert->height,
convert->format, convert->type, 0, 0, 0 );
const GLint srcRowStride =
_mesa_image_row_stride( convert->unpacking, convert->width,
convert->format, convert->type );
GLint row, col;
#if DEBUG_TEXUTIL
_mesa_debug( NULL, __FUNCTION__ "\n" );
#endif
if (convert->width & (DST_TEXELS_PER_DWORD - 1)) {
/* Can't use dword conversion (i.e. when width = 1 and texels/dword = 2
* or width = 2 and texels/dword = 4).
*/
DST_TYPE *dst = (DST_TYPE *)((GLubyte *)convert->dstImage +
(convert->yoffset * convert->width +
convert->xoffset) * DST_TEXEL_BYTES);
for ( row = 0 ; row < convert->height ; row++ ) {
const GLubyte *srcRow = src;
for ( col = 0; col < convert->width; col++ ) {
CONVERT_TEXEL(*dst, src);
src += SRC_TEXEL_BYTES;
}
src = srcRow + srcRowStride;
}
}
else {
/* the common case */
GLuint *dst = (GLuint *)((GLubyte *)convert->dstImage +
(convert->yoffset * convert->width +
convert->xoffset) * DST_TEXEL_BYTES);
for ( row = 0 ; row < convert->height ; row++ ) {
#ifdef CONVERT_DIRECT
MEMCPY( dst, src, DST_ROW_STRIDE );
src += srcRowStride;
dst = (GLuint *)((GLubyte *)dst + DST_ROW_STRIDE);
#else
const GLubyte *srcRow = src;
for ( col = convert->width / DST_TEXELS_PER_DWORD ; col ; col-- ) {
CONVERT_TEXEL_DWORD( *dst++, src );
src += SRC_TEXEL_BYTES * DST_TEXELS_PER_DWORD;
}
src = srcRow + srcRowStride;
#endif
}
}
return GL_TRUE;
}
/* PRE: as above, height == dstImageHeight also.
*/
static GLboolean
TAG(texsubimage3d_unpack)( const struct convert_info *convert )
{
const GLubyte *src = (const GLubyte *)
_mesa_image_address( convert->unpacking, convert->srcImage,
convert->width, convert->height,
convert->format, convert->type, 0, 0, 0 );
const GLint srcImgStride = (const GLubyte *)
_mesa_image_address( convert->unpacking, convert->srcImage,
convert->width, convert->height,
convert->format, convert->type, 1, 0, 0 ) - src;
const GLint srcRowStride =
_mesa_image_row_stride( convert->unpacking, convert->width,
convert->format, convert->type );
GLint row, col, img;
#if DEBUG_TEXUTIL
_mesa_debug( NULL, __FUNCTION__ "\n" );
#endif
if (convert->width & (DST_TEXELS_PER_DWORD - 1)) {
/* Can't use dword conversion (i.e. when width = 1 and texels/dword = 2
* or width = 2 and texels/dword = 4).
*/
DST_TYPE *dst = (DST_TYPE *)((GLubyte *)convert->dstImage +
((convert->zoffset * convert->height +
convert->yoffset) * convert->width +
convert->xoffset) * DST_TEXEL_BYTES);
for ( img = 0 ; img < convert->depth ; img++ ) {
const GLubyte *srcImage = src;
for ( row = 0 ; row < convert->height ; row++ ) {
const GLubyte *srcRow = src;
for ( col = 0; col < convert->width; col++ ) {
CONVERT_TEXEL(*dst, src);
src += SRC_TEXEL_BYTES;
}
src = srcRow + srcRowStride;
}
src = srcImage + srcImgStride;
}
}
else {
/* the common case */
GLuint *dst = (GLuint *)((GLubyte *)convert->dstImage +
((convert->zoffset * convert->height +
convert->yoffset) * convert->width +
convert->xoffset) * DST_TEXEL_BYTES);
for ( img = 0 ; img < convert->depth ; img++ ) {
const GLubyte *srcImage = src;
for ( row = 0 ; row < convert->height ; row++ ) {
#ifdef CONVERT_DIRECT
MEMCPY( dst, src, DST_ROW_STRIDE );
src += srcRowStride;
dst = (GLuint *)((GLubyte *)dst + DST_ROW_STRIDE);
#else
const GLubyte *srcRow = src;
for ( col = convert->width / DST_TEXELS_PER_DWORD ; col ; col-- ) {
CONVERT_TEXEL_DWORD( *dst++, src );
src += SRC_TEXEL_BYTES * DST_TEXELS_PER_DWORD;
}
src = srcRow + srcRowStride;
#endif
}
src = srcImage + srcImgStride;
}
}
return GL_TRUE;
}
/* =============================================================
* PRE: Require pixelstore attribs, width != dstImageWidth.
*/
static GLboolean
TAG(texsubimage2d_stride_unpack)( const struct convert_info *convert )
{
const GLubyte *src = (const GLubyte *)
_mesa_image_address( convert->unpacking, convert->srcImage,
convert->width, convert->height,
convert->format, convert->type, 0, 0, 0 );
const GLint srcRowStride =
_mesa_image_row_stride( convert->unpacking, convert->width,
convert->format, convert->type );
DST_TYPE *dst = (DST_TYPE *)((GLubyte *)convert->dstImage +
(convert->yoffset * convert->dstImageWidth +
convert->xoffset) * DST_TEXEL_BYTES);
GLint adjust;
GLint row, col;
(void) col;
adjust = convert->dstImageWidth - convert->width;
#if DEBUG_TEXUTIL
_mesa_debug( NULL, __FUNCTION__ ":\n" );
_mesa_debug( NULL, " x=%d y=%d w=%d h=%d s=%d\n",
convert->xoffset, convert->yoffset, convert->width,
convert->height, convert->dstImageWidth );
_mesa_debug( NULL, " adjust=%d\n", adjust );
#endif
for ( row = 0 ; row < convert->height ; row++ ) {
#ifdef CONVERT_DIRECT
MEMCPY( dst, src, DST_ROW_BYTES );
src += srcRowStride;
dst += convert->dstImageWidth;
#else
const GLubyte *srcRow = src;
for ( col = 0 ; col < convert->width ; col++ ) {
CONVERT_TEXEL( *dst++, src );
src += SRC_TEXEL_BYTES;
}
src = srcRow + srcRowStride;
dst += adjust;
#endif
}
return GL_TRUE;
}
/* PRE: As above, or height != dstImageHeight also.
*/
static GLboolean
TAG(texsubimage3d_stride_unpack)( const struct convert_info *convert )
{
const GLubyte *src = (const GLubyte *)
_mesa_image_address( convert->unpacking, convert->srcImage,
convert->width, convert->height,
convert->format, convert->type, 0, 0, 0 );
const GLint srcImgStride = (const GLubyte *)
_mesa_image_address( convert->unpacking, convert->srcImage,
convert->width, convert->height,
convert->format, convert->type, 1, 0, 0 ) - src;
const GLint srcRowStride =
_mesa_image_row_stride( convert->unpacking, convert->width,
convert->format, convert->type );
DST_TYPE *dst = (DST_TYPE *)((GLubyte *)convert->dstImage +
((convert->zoffset * convert->dstImageHeight +
convert->yoffset) * convert->dstImageWidth +
convert->xoffset) * DST_TEXEL_BYTES);
GLint adjust;
GLint row, col, img;
(void) col;
adjust = convert->dstImageWidth - convert->width;
#if DEBUG_TEXUTIL
_mesa_debug( NULL, __FUNCTION__ ":\n" );
_mesa_debug( NULL, " x=%d y=%d w=%d h=%d s=%d\n",
convert->xoffset, convert->yoffset, convert->width,
convert->height, convert->dstImageWidth );
_mesa_debug( NULL, " adjust=%d\n", adjust );
#endif
for ( img = 0 ; img < convert->depth ; img++ ) {
const GLubyte *srcImage = src;
for ( row = 0 ; row < convert->height ; row++ ) {
#ifdef CONVERT_DIRECT
MEMCPY( dst, src, DST_ROW_BYTES );
src += srcRowStride;
dst += convert->dstImageWidth;
#else
const GLubyte *srcRow = src;
for ( col = 0 ; col < convert->width ; col++ ) {
CONVERT_TEXEL( *dst++, src );
src += SRC_TEXEL_BYTES;
}
src = srcRow + srcRowStride;
dst += adjust;
#endif
}
src = srcImage + srcImgStride;
}
return GL_TRUE;
}
static convert_func TAG(texsubimage2d_tab)[] = {
TAG(texsubimage2d),
TAG(texsubimage2d_stride),
TAG(texsubimage2d_unpack),
TAG(texsubimage2d_stride_unpack),
};
static convert_func TAG(texsubimage3d_tab)[] = {
TAG(texsubimage3d),
TAG(texsubimage3d_stride),
TAG(texsubimage3d_unpack),
TAG(texsubimage3d_stride_unpack),
};
#ifndef PRESERVE_DST_TYPE
#undef DST_TYPE
#undef DST_TEXELS_PER_DWORD
#endif
#undef SRC_TEXEL_BYTES
#undef DST_TEXEL_BYTES
#undef DST_ROW_BYTES
#undef DST_ROW_STRIDE
#undef CONVERT_TEXEL
#undef CONVERT_TEXEL_DWORD
#undef CONVERT_DIRECT
#undef TAG
#undef PRESERVE_DST_TYPE