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/**************************************************************************
*
* 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, unsigned dst_level,
unsigned dstx, unsigned dsty, unsigned dstz,
struct pipe_resource *src, unsigned src_level,
const struct pipe_box *src_box)
{
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 */
/* XXX cannot copy 3d regions at this time */
assert(src_box->depth == 1);
if (dst->target != PIPE_TEXTURE_CUBE &&
dst->target != PIPE_TEXTURE_3D)
assert(dstz == 0);
dst_offset = i915_texture_offset(dst_tex, dst_level, dstz);
if (src->target != PIPE_TEXTURE_CUBE &&
src->target != PIPE_TEXTURE_3D)
assert(src_box->z == 0);
src_offset = i915_texture_offset(src_tex, src_level, src_box->z);
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) src_box->x, (short) src_box->y, (short) dstx, (short) dsty,
(short) src_box->width, (short) src_box->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;
unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
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, 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;
unsigned offset = i915_texture_offset(tex, dst->u.tex.level, dst->u.tex.first_layer);
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, offset,
(short) dstx, (short) dsty,
(short) width, (short) height,
packedds );
}
/*
* Screen surface functions
*/
static struct pipe_surface *
i915_create_surface(struct pipe_context *ctx,
struct pipe_resource *pt,
const struct pipe_surface *surf_tmpl)
{
struct pipe_surface *ps;
assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
if (pt->target != PIPE_TEXTURE_CUBE &&
pt->target != PIPE_TEXTURE_3D)
assert(surf_tmpl->u.tex.first_layer == 0);
ps = CALLOC_STRUCT(pipe_surface);
if (ps) {
/* could subclass pipe_surface and store offset as it used to do */
pipe_reference_init(&ps->reference, 1);
pipe_resource_reference(&ps->texture, pt);
ps->format = surf_tmpl->format;
ps->width = u_minify(pt->width0, surf_tmpl->u.tex.level);
ps->height = u_minify(pt->height0, surf_tmpl->u.tex.level);
ps->u.tex.level = surf_tmpl->u.tex.level;
ps->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
ps->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
ps->usage = surf_tmpl->usage;
ps->context = ctx;
}
return ps;
}
static void
i915_surface_destroy(struct pipe_context *ctx,
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;
i915->base.create_surface = i915_create_surface;
i915->base.surface_destroy = i915_surface_destroy;
}
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