/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
#include "st_context.h"
#include "st_format.h"
#include "st_texture.h"
#include "enums.h"
#include "pipe/p_state.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_inlines.h"
#include "pipe/p_util.h"
#include "pipe/p_inlines.h"
#include "pipe/p_winsys.h"
#define DBG if(0) printf
#if 0
static GLenum
target_to_target(GLenum target)
{
switch (target) {
case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
return GL_TEXTURE_CUBE_MAP_ARB;
default:
return target;
}
}
#endif
/**
* Allocate a new pipe_texture object
* width0, height0, depth0 are the dimensions of the level 0 image
* (the highest resolution). last_level indicates how many mipmap levels
* to allocate storage for. For non-mipmapped textures, this will be zero.
*/
struct pipe_texture *
st_texture_create(struct st_context *st,
enum pipe_texture_target target,
enum pipe_format format,
GLuint last_level,
GLuint width0,
GLuint height0,
GLuint depth0,
GLuint compress_byte)
{
struct pipe_texture pt, *newtex;
assert(target <= PIPE_TEXTURE_CUBE);
DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
_mesa_lookup_enum_by_nr(target),
_mesa_lookup_enum_by_nr(format), last_level);
assert(format);
memset(&pt, 0, sizeof(pt));
pt.target = target;
pt.format = format;
pt.last_level = last_level;
pt.width[0] = width0;
pt.height[0] = height0;
pt.depth[0] = depth0;
pt.compressed = compress_byte ? 1 : 0;
pt.cpp = pt.compressed ? compress_byte : st_sizeof_format(format);
newtex = st->pipe->texture_create(st->pipe, &pt);
assert(!newtex || newtex->refcount == 1);
return newtex;
}
/**
* Check if a texture image be pulled into a unified mipmap texture.
* This mirrors the completeness test in a lot of ways.
*
* Not sure whether I want to pass gl_texture_image here.
*/
GLboolean
st_texture_match_image(const struct pipe_texture *pt,
const struct gl_texture_image *image,
GLuint face, GLuint level)
{
/* Images with borders are never pulled into mipmap textures.
*/
if (image->Border)
return GL_FALSE;
if (st_mesa_format_to_pipe_format(image->TexFormat->MesaFormat) != pt->format ||
image->IsCompressed != pt->compressed)
return GL_FALSE;
/* Test image dimensions against the base level image adjusted for
* minification. This will also catch images not present in the
* texture, changed targets, etc.
*/
if (image->Width != pt->width[level] ||
image->Height != pt->height[level] ||
image->Depth != pt->depth[level])
return GL_FALSE;
return GL_TRUE;
}
#if 000
/* Although we use the image_offset[] array to store relative offsets
* to cube faces, Mesa doesn't know anything about this and expects
* each cube face to be treated as a separate image.
*
* These functions present that view to mesa:
*/
const GLuint *
st_texture_depth_offsets(struct pipe_texture *pt, GLuint level)
{
static const GLuint zero = 0;
if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1)
return &zero;
else
return pt->level[level].image_offset;
}
/**
* Return the offset to the given mipmap texture image within the
* texture memory buffer, in bytes.
*/
GLuint
st_texture_image_offset(const struct pipe_texture * pt,
GLuint face, GLuint level)
{
if (pt->target == PIPE_TEXTURE_CUBE)
return (pt->level[level].level_offset +
pt->level[level].image_offset[face] * pt->cpp);
else
return pt->level[level].level_offset;
}
#endif
/**
* Map a teximage in a mipmap texture.
* \param row_stride returns row stride in bytes
* \param image_stride returns image stride in bytes (for 3D textures).
* \return address of mapping
*/
GLubyte *
st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
GLuint zoffset)
{
struct pipe_texture *pt = stImage->pt;
DBG("%s \n", __FUNCTION__);
stImage->surface = st->pipe->get_tex_surface(st->pipe, pt, stImage->face,
stImage->level, zoffset);
return pipe_surface_map(stImage->surface);
}
void
st_texture_image_unmap(struct st_texture_image *stImage)
{
DBG("%s\n", __FUNCTION__);
pipe_surface_unmap(stImage->surface);
pipe_surface_reference(&stImage->surface, NULL);
}
/**
* Upload data to a rectangular sub-region. Lots of choices how to do this:
*
* - memcpy by span to current destination
* - upload data as new buffer and blit
*
* Currently always memcpy.
*/
static void
st_surface_data(struct pipe_context *pipe,
struct pipe_surface *dst,
unsigned dstx, unsigned dsty,
const void *src, unsigned src_pitch,
unsigned srcx, unsigned srcy, unsigned width, unsigned height)
{
pipe_copy_rect(pipe_surface_map(dst),
dst->cpp,
dst->pitch,
dstx, dsty, width, height, src, src_pitch, srcx, srcy);
pipe_surface_unmap(dst);
}
/* Upload data for a particular image.
*/
void
st_texture_image_data(struct pipe_context *pipe,
struct pipe_texture *dst,
GLuint face,
GLuint level,
void *src,
GLuint src_row_pitch, GLuint src_image_pitch)
{
GLuint depth = dst->depth[level];
GLuint i;
GLuint height = 0;
const GLubyte *srcUB = src;
struct pipe_surface *dst_surface;
DBG("%s\n", __FUNCTION__);
for (i = 0; i < depth; i++) {
height = dst->height[level];
if(dst->compressed)
height /= 4;
dst_surface = pipe->get_tex_surface(pipe, dst, face, level, i);
st_surface_data(pipe, dst_surface,
0, 0, /* dstx, dsty */
srcUB,
src_row_pitch,
0, 0, /* source x, y */
dst->width[level], height); /* width, height */
pipe_surface_reference(&dst_surface, NULL);
srcUB += src_image_pitch * dst->cpp;
}
}
/* Copy mipmap image between textures
*/
void
st_texture_image_copy(struct pipe_context *pipe,
struct pipe_texture *dst, GLuint dstLevel,
struct pipe_texture *src,
GLuint face)
{
GLuint width = dst->width[dstLevel];
GLuint height = dst->height[dstLevel];
GLuint depth = dst->depth[dstLevel];
struct pipe_surface *src_surface;
struct pipe_surface *dst_surface;
GLuint i;
/* XXX this is a hack */
if (dst->compressed)
height /= 4;
for (i = 0; i < depth; i++) {
GLuint srcLevel;
/* find src texture level of needed size */
for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
if (src->width[srcLevel] == width &&
src->height[srcLevel] == height) {
break;
}
}
assert(src->width[srcLevel] == width);
assert(src->height[srcLevel] == height);
dst_surface = pipe->get_tex_surface(pipe, dst, face, dstLevel, i);
src_surface = pipe->get_tex_surface(pipe, src, face, srcLevel, i);
pipe->surface_copy(pipe,
FALSE,
dst_surface,
0, 0, /* destX, Y */
src_surface,
0, 0, /* srcX, Y */
width, height);
pipe_surface_reference(&dst_surface, NULL);
pipe_surface_reference(&src_surface, NULL);
}
}