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freedreno/a3xx/compiler: 1D textures 

Gallium already gives us height==1 for these, so the texture state is
already setup correctly to emulate 1D textures as a Nx1 2D texture.  We
just need to supply the .y coord.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
This commit is contained in:
Rob Clark 2014-05-17 13:49:52 -04:00
parent 6f84f64643
commit 88ba9de917
1 changed files with 25 additions and 4 deletions
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29
src/gallium/drivers/freedreno/a3xx/fd3_compiler.c
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@ -1091,14 +1091,18 @@ trans_samp(const struct instr_translater *t,
switch (t->arg) {
case TGSI_OPCODE_TEX:
switch (tex) {
case TGSI_TEXTURE_1D:
order = (int8_t[4]){ 0, -1, -1, -1 }; /* coord.x */
src_wrmask = TGSI_WRITEMASK_XY;
break;
case TGSI_TEXTURE_2D:
case TGSI_TEXTURE_RECT:
order = (int8_t[4]){ 0, 1, -1, -1 };
order = (int8_t[4]){ 0, 1, -1, -1 }; /* coord.xy */
src_wrmask = TGSI_WRITEMASK_XY;
break;
case TGSI_TEXTURE_3D:
case TGSI_TEXTURE_CUBE:
order = (int8_t[4]){ 0, 1, 2, -1 };
order = (int8_t[4]){ 0, 1, 2, -1 }; /* coord.xyz */
src_wrmask = TGSI_WRITEMASK_XYZ;
flags |= IR3_INSTR_3D;
break;
@ -1110,14 +1114,18 @@ trans_samp(const struct instr_translater *t,
break;
case TGSI_OPCODE_TXP:
switch (tex) {
case TGSI_TEXTURE_1D:
order = (int8_t[4]){ 0, -1, 3, -1 }; /* coord.xw */
src_wrmask = TGSI_WRITEMASK_XYZ;
break;
case TGSI_TEXTURE_2D:
case TGSI_TEXTURE_RECT:
order = (int8_t[4]){ 0, 1, 3, -1 };
order = (int8_t[4]){ 0, 1, 3, -1 }; /* coord.xyw */
src_wrmask = TGSI_WRITEMASK_XYZ;
break;
case TGSI_TEXTURE_3D:
case TGSI_TEXTURE_CUBE:
order = (int8_t[4]){ 0, 1, 2, 3 };
order = (int8_t[4]){ 0, 1, 2, 3 }; /* coord.xyzw */
src_wrmask = TGSI_WRITEMASK_XYZW;
flags |= IR3_INSTR_3D;
break;
@ -1137,6 +1145,10 @@ trans_samp(const struct instr_translater *t,
if (is_rel_or_const(coord))
needs_mov = true;
/* 1D textures we fix up w/ 0.0 as 2nd coord: */
if (tex == TGSI_TEXTURE_1D)
needs_mov = true;
/* The texture sample instructions need to coord in successive
* registers/components (ie. src.xy but not src.yx). And TXP
* needs the .w component in .z for 2D.. so in some cases we
@ -1166,6 +1178,15 @@ trans_samp(const struct instr_translater *t,
src_swiz(coord, order[j]));
}
/* fix up .y coord: */
if (tex == TGSI_TEXTURE_1D) {
instr = instr_create(ctx, 1, 0);
instr->cat1.src_type = type_mov;
instr->cat1.dst_type = type_mov;
add_dst_reg(ctx, instr, &tmp_dst, 1); /* .y */
ir3_reg_create(instr, 0, IR3_REG_IMMED)->fim_val = 0.5;
}
coord = tmp_src;
}