static void emit_fb_write( struct brw_wm_compile *c )
{
struct brw_fp_src payload_r0_depth = src_reg(BRW_FILE_PAYLOAD, PAYLOAD_DEPTH);
struct brw_fp_src outdepth = find_output_by_semantic(c, TGSI_SEMANTIC_POSITION, 0);
GLuint i;
outdepth = src_scalar(outdepth, Z);
for (i = 0 ; i < c->key.nr_cbufs; i++) {
struct brw_fp_src outcolor;
outcolor = find_output_by_semantic(c, TGSI_SEMANTIC_COLOR, i);
/* Use emit_tex_op so that we can specify the inst->target
* field, which is abused to contain the FB write target and the
* EOT marker
*/
emit_tex_op(c, WM_FB_WRITE,
dst_undef(),
(i == c->key.nr_cbufs - 1), /* EOT */
i,
0, /* no sampler */
outcolor,
payload_r0_depth,
outdepth);
}
}
static INLINE void emit_op1(struct brw_wm_compile *c,
GLuint op,
struct brw_fp_dst dest,
struct brw_fp_src src0)
{
emit_tex_op(c, op, dest, 0, 0, 0, src0, src_undef(), src_undef());
}
static INLINE void emit_op3(struct brw_wm_compile *c,
GLuint op,
struct brw_fp_dst dest,
struct brw_fp_src src0,
struct brw_fp_src src1,
struct brw_fp_src src2 )
{
emit_tex_op(c, op, dest, 0, 0, 0, src0, src1, src2);
}
static struct prog_instruction * emit_op(struct brw_wm_compile *c,
GLuint op,
struct prog_dst_register dest,
GLuint saturate,
struct prog_src_register src0,
struct prog_src_register src1,
struct prog_src_register src2 )
{
return emit_tex_op(c, op, dest, saturate,
TEX_UNIT_NONE, TEX_TARGET_NONE, 0, /* unit, tgt, shadow */
src0, src1, src2);
}
/**
* Some TEX instructions require extra code, cube map coordinate
* normalization, or coordinate scaling for RECT textures, etc.
* This function emits those extra instructions and the TEX
* instruction itself.
*/
static void precalc_tex( struct brw_wm_compile *c,
struct brw_fp_dst dst,
unsigned target,
unsigned unit,
struct brw_fp_src src0,
struct brw_fp_src sampler )
{
struct brw_fp_src coord;
struct brw_fp_dst tmp = dst_undef();
assert(unit < BRW_MAX_TEX_UNIT);
/* Cubemap: find longest component of coord vector and normalize
* it.
*/
if (target == TGSI_TEXTURE_CUBE) {
struct brw_fp_src tmpsrc;
tmp = get_temp(c);
tmpsrc = src_reg_from_dst(tmp);
/* tmp = abs(src0) */
emit_op1(c,
TGSI_OPCODE_MOV,
tmp,
src_abs(src0));
/* tmp.X = MAX(tmp.X, tmp.Y) */
emit_op2(c, TGSI_OPCODE_MAX,
dst_mask(tmp, BRW_WRITEMASK_X),
src_scalar(tmpsrc, X),
src_scalar(tmpsrc, Y));
/* tmp.X = MAX(tmp.X, tmp.Z) */
emit_op2(c, TGSI_OPCODE_MAX,
dst_mask(tmp, BRW_WRITEMASK_X),
tmpsrc,
src_scalar(tmpsrc, Z));
/* tmp.X = 1 / tmp.X */
emit_op1(c, TGSI_OPCODE_RCP,
dst_mask(tmp, BRW_WRITEMASK_X),
tmpsrc);
/* tmp = src0 * tmp.xxxx */
emit_op2(c, TGSI_OPCODE_MUL,
tmp,
src0,
src_scalar(tmpsrc, X));
coord = tmpsrc;
}
else if (target == TGSI_TEXTURE_RECT ||
target == TGSI_TEXTURE_SHADOWRECT) {
/* XXX: need a mechanism for internally generated constants.
*/
coord = src0;
}
else {
coord = src0;
}
/* Need to emit YUV texture conversions by hand. Probably need to
* do this here - the alternative is in brw_wm_emit.c, but the
* conversion requires allocating a temporary variable which we
* don't have the facility to do that late in the compilation.
*/
if (c->key.yuvtex_mask & (1 << unit)) {
/* convert ycbcr to RGBA */
GLboolean swap_uv = c->key.yuvtex_swap_mask & (1<<unit);
struct brw_fp_dst tmp = get_temp(c);
struct brw_fp_src tmpsrc = src_reg_from_dst(tmp);
struct brw_fp_src C0 = src_imm4f( c, -.5, -.0625, -.5, 1.164 );
struct brw_fp_src C1 = src_imm4f( c, 1.596, -0.813, 2.018, -.391 );
/* tmp = TEX ...
*/
emit_tex_op(c,
TGSI_OPCODE_TEX,
dst_saturate(tmp, dst.saturate),
unit,
target,
sampler.index,
coord,
src_undef(),
src_undef());
/* tmp.xyz = ADD TMP, C0
*/
emit_op2(c, TGSI_OPCODE_ADD,
dst_mask(tmp, BRW_WRITEMASK_XYZ),
tmpsrc,
C0);
/* YUV.y = MUL YUV.y, C0.w
*/
emit_op2(c, TGSI_OPCODE_MUL,
dst_mask(tmp, BRW_WRITEMASK_Y),
tmpsrc,
src_scalar(C0, W));
/*
* if (UV swaped)
* RGB.xyz = MAD YUV.zzx, C1, YUV.y
* else
* RGB.xyz = MAD YUV.xxz, C1, YUV.y
*/
emit_op3(c, TGSI_OPCODE_MAD,
dst_mask(dst, BRW_WRITEMASK_XYZ),
( swap_uv ?
src_swizzle(tmpsrc, Z,Z,X,X) :
src_swizzle(tmpsrc, X,X,Z,Z)),
C1,
src_scalar(tmpsrc, Y));
/* RGB.y = MAD YUV.z, C1.w, RGB.y
*/
emit_op3(c,
TGSI_OPCODE_MAD,
dst_mask(dst, BRW_WRITEMASK_Y),
src_scalar(tmpsrc, Z),
src_scalar(C1, W),
src_scalar(src_reg_from_dst(dst), Y));
release_temp(c, tmp);
}
else {
/* ordinary RGBA tex instruction */
emit_tex_op(c,
TGSI_OPCODE_TEX,
dst,
unit,
target,
sampler.index,
coord,
src_undef(),
src_undef());
}
/* XXX: add GL_EXT_texture_swizzle support to gallium -- by
* generating shader variants in mesa state tracker.
*/
/* Release this temp if we ended up allocating it:
*/
if (!dst_is_undef(tmp))
release_temp(c, tmp);
}
/**
* Some TEX instructions require extra code, cube map coordinate
* normalization, or coordinate scaling for RECT textures, etc.
* This function emits those extra instructions and the TEX
* instruction itself.
*/
static void precalc_tex( struct brw_wm_compile *c,
const struct prog_instruction *inst )
{
struct prog_src_register coord;
struct prog_dst_register tmpcoord;
const GLuint unit = c->fp->program.Base.SamplerUnits[inst->TexSrcUnit];
assert(unit < BRW_MAX_TEX_UNIT);
if (inst->TexSrcTarget == TEXTURE_CUBE_INDEX) {
struct prog_instruction *out;
struct prog_dst_register tmp0 = get_temp(c);
struct prog_src_register tmp0src = src_reg_from_dst(tmp0);
struct prog_dst_register tmp1 = get_temp(c);
struct prog_src_register tmp1src = src_reg_from_dst(tmp1);
struct prog_src_register src0 = inst->SrcReg[0];
/* find longest component of coord vector and normalize it */
tmpcoord = get_temp(c);
coord = src_reg_from_dst(tmpcoord);
/* tmpcoord = src0 (i.e.: coord = src0) */
out = emit_op(c, OPCODE_MOV,
tmpcoord,
0,
src0,
src_undef(),
src_undef());
out->SrcReg[0].Negate = NEGATE_NONE;
out->SrcReg[0].Abs = 1;
/* tmp0 = MAX(coord.X, coord.Y) */
emit_op(c, OPCODE_MAX,
tmp0,
0,
src_swizzle1(coord, X),
src_swizzle1(coord, Y),
src_undef());
/* tmp1 = MAX(tmp0, coord.Z) */
emit_op(c, OPCODE_MAX,
tmp1,
0,
tmp0src,
src_swizzle1(coord, Z),
src_undef());
/* tmp0 = 1 / tmp1 */
emit_op(c, OPCODE_RCP,
dst_mask(tmp0, WRITEMASK_X),
0,
tmp1src,
src_undef(),
src_undef());
/* tmpCoord = src0 * tmp0 */
emit_op(c, OPCODE_MUL,
tmpcoord,
0,
src0,
src_swizzle1(tmp0src, SWIZZLE_X),
src_undef());
release_temp(c, tmp0);
release_temp(c, tmp1);
}
else if (inst->TexSrcTarget == TEXTURE_RECT_INDEX) {
struct prog_src_register scale =
search_or_add_param5( c,
STATE_INTERNAL,
STATE_TEXRECT_SCALE,
unit,
0,0 );
tmpcoord = get_temp(c);
/* coord.xy = MUL inst->SrcReg[0], { 1/width, 1/height }
*/
emit_op(c,
OPCODE_MUL,
tmpcoord,
0,
inst->SrcReg[0],
src_swizzle(scale,
SWIZZLE_X,
SWIZZLE_Y,
SWIZZLE_ONE,
SWIZZLE_ONE),
src_undef());
coord = src_reg_from_dst(tmpcoord);
}
else {
coord = inst->SrcReg[0];
}
/* Need to emit YUV texture conversions by hand. Probably need to
* do this here - the alternative is in brw_wm_emit.c, but the
* conversion requires allocating a temporary variable which we
* don't have the facility to do that late in the compilation.
*/
if (c->key.yuvtex_mask & (1 << unit)) {
/* convert ycbcr to RGBA */
GLboolean swap_uv = c->key.yuvtex_swap_mask & (1<<unit);
/*
CONST C0 = { -.5, -.0625, -.5, 1.164 }
CONST C1 = { 1.596, -0.813, 2.018, -.391 }
UYV = TEX ...
UYV.xyz = ADD UYV, C0
UYV.y = MUL UYV.y, C0.w
if (UV swaped)
RGB.xyz = MAD UYV.zzx, C1, UYV.y
else
RGB.xyz = MAD UYV.xxz, C1, UYV.y
RGB.y = MAD UYV.z, C1.w, RGB.y
*/
struct prog_dst_register dst = inst->DstReg;
struct prog_dst_register tmp = get_temp(c);
struct prog_src_register tmpsrc = src_reg_from_dst(tmp);
struct prog_src_register C0 = search_or_add_const4f( c, -.5, -.0625, -.5, 1.164 );
struct prog_src_register C1 = search_or_add_const4f( c, 1.596, -0.813, 2.018, -.391 );
/* tmp = TEX ...
*/
emit_tex_op(c,
OPCODE_TEX,
tmp,
inst->SaturateMode,
unit,
inst->TexSrcTarget,
inst->TexShadow,
coord,
src_undef(),
src_undef());
/* tmp.xyz = ADD TMP, C0
*/
emit_op(c,
OPCODE_ADD,
dst_mask(tmp, WRITEMASK_XYZ),
0,
tmpsrc,
C0,
src_undef());
/* YUV.y = MUL YUV.y, C0.w
*/
emit_op(c,
OPCODE_MUL,
dst_mask(tmp, WRITEMASK_Y),
0,
tmpsrc,
src_swizzle1(C0, W),
src_undef());
/*
* if (UV swaped)
* RGB.xyz = MAD YUV.zzx, C1, YUV.y
* else
* RGB.xyz = MAD YUV.xxz, C1, YUV.y
*/
emit_op(c,
OPCODE_MAD,
dst_mask(dst, WRITEMASK_XYZ),
0,
swap_uv?src_swizzle(tmpsrc, Z,Z,X,X):src_swizzle(tmpsrc, X,X,Z,Z),
C1,
src_swizzle1(tmpsrc, Y));
/* RGB.y = MAD YUV.z, C1.w, RGB.y
*/
emit_op(c,
OPCODE_MAD,
dst_mask(dst, WRITEMASK_Y),
0,
src_swizzle1(tmpsrc, Z),
src_swizzle1(C1, W),
src_swizzle1(src_reg_from_dst(dst), Y));
release_temp(c, tmp);
}
else {
/* ordinary RGBA tex instruction */
emit_tex_op(c,
OPCODE_TEX,
inst->DstReg,
inst->SaturateMode,
unit,
inst->TexSrcTarget,
inst->TexShadow,
coord,
src_undef(),
src_undef());
}
/* For GL_EXT_texture_swizzle: */
if (c->key.tex_swizzles[unit] != SWIZZLE_NOOP) {
/* swizzle the result of the TEX instruction */
struct prog_src_register tmpsrc = src_reg_from_dst(inst->DstReg);
emit_op(c, OPCODE_SWZ,
inst->DstReg,
SATURATE_OFF, /* saturate already done above */
src_swizzle4(tmpsrc, c->key.tex_swizzles[unit]),
src_undef(),
src_undef());
}
if ((inst->TexSrcTarget == TEXTURE_RECT_INDEX) ||
(inst->TexSrcTarget == TEXTURE_CUBE_INDEX))
release_temp(c, tmpcoord);
}
