/**************************************************************************
*
* Copyright 2003 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 "i915_surface.h"
#include "i915_resource.h"
#include "i915_blit.h"
#include "i915_reg.h"
#include "i915_screen.h"
#include "pipe/p_defines.h"
#include "util/u_inlines.h"
#include "util/u_math.h"
#include "util/u_format.h"
#include "util/u_memory.h"
#include "util/u_pack_color.h"
/* Assumes all values are within bounds -- no checking at this level -
* do it higher up if required.
*/
static void
i915_surface_copy(struct pipe_context *pipe,
struct pipe_resource *dst, struct pipe_subresource subdst,
unsigned dstx, unsigned dsty, unsigned dstz,
struct pipe_resource *src, struct pipe_subresource subsrc,
unsigned srcx, unsigned srcy, unsigned srcz,
unsigned width, unsigned height)
{
struct i915_texture *dst_tex = i915_texture(dst);
struct i915_texture *src_tex = i915_texture(src);
struct pipe_resource *dpt = &dst_tex->b.b;
struct pipe_resource *spt = &src_tex->b.b;
unsigned dst_offset, src_offset; /* in bytes */
if (dst->target == PIPE_TEXTURE_CUBE) {
dst_offset = dst_tex->image_offset[subdst.level][subdst.face];
}
else if (dst->target == PIPE_TEXTURE_3D) {
dst_offset = dst_tex->image_offset[subdst.level][dstz];
}
else {
dst_offset = dst_tex->image_offset[subdst.level][0];
assert(subdst.face == 0);
assert(dstz == 0);
}
if (src->target == PIPE_TEXTURE_CUBE) {
src_offset = src_tex->image_offset[subsrc.level][subsrc.face];
}
else if (src->target == PIPE_TEXTURE_3D) {
src_offset = src_tex->image_offset[subsrc.level][srcz];
}
else {
src_offset = src_tex->image_offset[subsrc.level][0];
assert(subsrc.face == 0);
assert(srcz == 0);
}
assert( dst != src );
assert( util_format_get_blocksize(dpt->format) == util_format_get_blocksize(spt->format) );
assert( util_format_get_blockwidth(dpt->format) == util_format_get_blockwidth(spt->format) );
assert( util_format_get_blockheight(dpt->format) == util_format_get_blockheight(spt->format) );
assert( util_format_get_blockwidth(dpt->format) == 1 );
assert( util_format_get_blockheight(dpt->format) == 1 );
i915_copy_blit( i915_context(pipe),
util_format_get_blocksize(dpt->format),
(unsigned short) src_tex->stride, src_tex->buffer, src_offset,
(unsigned short) dst_tex->stride, dst_tex->buffer, dst_offset,
(short) srcx, (short) srcy, (short) dstx, (short) dsty, (short) width, (short) height );
}
static void
i915_clear_render_target(struct pipe_context *pipe,
struct pipe_surface *dst,
const float *rgba,
unsigned dstx, unsigned dsty,
unsigned width, unsigned height)
{
struct i915_texture *tex = i915_texture(dst->texture);
struct pipe_resource *pt = &tex->b.b;
union util_color uc;
assert(util_format_get_blockwidth(pt->format) == 1);
assert(util_format_get_blockheight(pt->format) == 1);
util_pack_color(rgba, dst->format, &uc);
i915_fill_blit( i915_context(pipe),
util_format_get_blocksize(pt->format),
XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB,
(unsigned short) tex->stride,
tex->buffer, dst->offset,
(short) dstx, (short) dsty,
(short) width, (short) height,
uc.ui );
}
static void
i915_clear_depth_stencil(struct pipe_context *pipe,
struct pipe_surface *dst,
unsigned clear_flags,
double depth,
unsigned stencil,
unsigned dstx, unsigned dsty,
unsigned width, unsigned height)
{
struct i915_texture *tex = i915_texture(dst->texture);
struct pipe_resource *pt = &tex->b.b;
unsigned packedds;
unsigned mask = 0;
assert(util_format_get_blockwidth(pt->format) == 1);
assert(util_format_get_blockheight(pt->format) == 1);
packedds = util_pack_z_stencil(dst->format, depth, stencil);
if (clear_flags & PIPE_CLEAR_DEPTH)
mask |= XY_COLOR_BLT_WRITE_RGB;
/* XXX presumably this does read-modify-write
(otherwise this won't work anyway). Hence will only want to
do it if really have stencil and it isn't cleared */
if ((clear_flags & PIPE_CLEAR_STENCIL) ||
(dst->format != PIPE_FORMAT_Z24_UNORM_S8_USCALED))
mask |= XY_COLOR_BLT_WRITE_ALPHA;
i915_fill_blit( i915_context(pipe),
util_format_get_blocksize(pt->format),
mask,
(unsigned short) tex->stride,
tex->buffer, dst->offset,
(short) dstx, (short) dsty,
(short) width, (short) height,
packedds );
}
/*
* Screen surface functions
*/
static struct pipe_surface *
i915_get_tex_surface(struct pipe_screen *screen,
struct pipe_resource *pt,
unsigned face, unsigned level, unsigned zslice,
unsigned flags)
{
struct i915_texture *tex = i915_texture(pt);
struct pipe_surface *ps;
unsigned offset; /* in bytes */
if (pt->target == PIPE_TEXTURE_CUBE) {
offset = tex->image_offset[level][face];
}
else if (pt->target == PIPE_TEXTURE_3D) {
offset = tex->image_offset[level][zslice];
}
else {
offset = tex->image_offset[level][0];
assert(face == 0);
assert(zslice == 0);
}
ps = CALLOC_STRUCT(pipe_surface);
if (ps) {
pipe_reference_init(&ps->reference, 1);
pipe_resource_reference(&ps->texture, pt);
ps->format = pt->format;
ps->width = u_minify(pt->width0, level);
ps->height = u_minify(pt->height0, level);
ps->offset = offset;
ps->usage = flags;
}
return ps;
}
static void
i915_tex_surface_destroy(struct pipe_surface *surf)
{
pipe_resource_reference(&surf->texture, NULL);
FREE(surf);
}
void
i915_init_surface_functions(struct i915_context *i915)
{
i915->base.resource_copy_region = i915_surface_copy;
i915->base.clear_render_target = i915_clear_render_target;
i915->base.clear_depth_stencil = i915_clear_depth_stencil;
}
/* No good reason for these to be in the screen.
*/
void
i915_init_screen_surface_functions(struct i915_screen *is)
{
is->base.get_tex_surface = i915_get_tex_surface;
is->base.tex_surface_destroy = i915_tex_surface_destroy;
}