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#include "xorg_exa_tgsi.h"
/*### stupidity defined in X11/extensions/XI.h */
#undef Absolute
#include "pipe/p_format.h"
#include "pipe/p_context.h"
#include "pipe/p_state.h"
#include "pipe/p_inlines.h"
#include "pipe/p_shader_tokens.h"
#include "util/u_memory.h"
#include "util/u_simple_shaders.h"
#include "tgsi/tgsi_ureg.h"
#include "cso_cache/cso_context.h"
#define UNSUPPORTED_OP 0
struct shader_id {
int op : 8;
int mask : 1;
int component_alpha : 1;
int is_fill : 1;
};
/* SAMP[0] = dst
* SAMP[1] = src
* SAMP[2] = mask
* IN[0] = pos dst
* IN[1] = pos src
* IN[2] = pos mask
* CONST[0] = (0, 0, 0, 1)
*/
static const char over_op[] =
"SUB TEMP[3], CONST[0].wwww, TEMP[1].wwww\n"
"MUL TEMP[3], TEMP[0], TEMP[3]\n"
"ADD TEMP[0], TEMP[3], TEMP[0]\n";
static INLINE void
create_preamble(struct ureg_program *ureg)
{
}
static INLINE void
src_in_mask(struct ureg_program *ureg,
struct ureg_dst dst,
struct ureg_src src,
struct ureg_src mask)
{
/* MUL dst, src, mask.wwww */
ureg_MUL(ureg, dst, src,
ureg_scalar(mask, TGSI_SWIZZLE_W));
}
static INLINE
struct shader_id shader_state(int op,
PicturePtr src_picture,
PicturePtr mask_picture,
PicturePtr dst_picture)
{
struct shader_id sid;
sid.op = op;
sid.mask = (mask_picture != 0);
sid.component_alpha = (mask_picture->componentAlpha);
sid.is_fill = (src_picture->pSourcePict != 0);
if (sid.is_fill) {
sid.is_fill =
(src_picture->pSourcePict->type == SourcePictTypeSolidFill);
}
return sid;
}
struct xorg_shader xorg_shader_construct(struct exa_context *exa,
int op,
PicturePtr src_picture,
PicturePtr mask_picture,
PicturePtr dst_picture)
{
struct ureg_program *ureg;
struct ureg_src dst_sampler, src_sampler, mask_sampler;
struct ureg_src dst_pos, src_pos, mask_pos;
struct ureg_src src, mask;
struct shader_id sid = shader_state(op, src_picture,
mask_picture,
dst_picture);
struct xorg_shader shader = {0};
ureg = ureg_create(TGSI_PROCESSOR_FRAGMENT);
if (ureg == NULL)
return shader;
if (sid.is_fill)
return shader;
#if 0 /* unused right now */
dst_sampler = ureg_DECL_sampler(ureg);
dst_pos = ureg_DECL_fs_input(ureg,
TGSI_SEMANTIC_POSITION,
0,
TGSI_INTERPOLATE_PERSPECTIVE);
#endif
src_sampler = ureg_DECL_sampler(ureg);
src_pos = ureg_DECL_fs_input(ureg,
TGSI_SEMANTIC_POSITION,
1,
TGSI_INTERPOLATE_PERSPECTIVE);
if (sid.mask) {
mask_sampler = ureg_DECL_sampler(ureg);
src_pos = ureg_DECL_fs_input(ureg,
TGSI_SEMANTIC_POSITION,
2,
TGSI_INTERPOLATE_PERSPECTIVE);
}
ureg_TEX(ureg, ureg_dst(src),
TGSI_TEXTURE_2D, src_pos, src_sampler);
if (sid.mask) {
ureg_TEX(ureg, ureg_dst(mask),
TGSI_TEXTURE_2D, mask_pos, mask_sampler);
/* src IN mask */
src_in_mask(ureg, ureg_dst(src), src, mask);
}
ureg_END(ureg);
return shader;
}
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