fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-05 11:48:06 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

i965/fs: Implement texture projection support.

Browse source 
Our fragment program backend implements support for TXP directly, and
there's no NIR lowering pass to remove the projection.  When we switch
fragment program support over to NIR, we need to support it somehow.

It's easy enough to support directly.

v2: Split out offset/tex_offset rename (requested by Jordan).

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
This commit is contained in:
Kenneth Graunke 2015-01-31 23:36:52 -08:00
parent 0a9bcf9e39
commit 649173b473
1 changed files with 10 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
src/mesa/drivers/dri/i965/brw_fs_nir.cpp
View file

@ -1744,6 +1744,7 @@ fs_visitor::nir_emit_texture(nir_tex_instr *instr)
int lod_components = 0, offset_components = 0;
fs_reg coordinate, shadow_comparitor, lod, lod2, sample_index, mcs, tex_offset;
fs_reg projector;
for (unsigned i = 0; i < instr->num_srcs; i++) {
fs_reg src = get_nir_src(instr->src[i].src);
@ -1796,7 +1797,8 @@ fs_visitor::nir_emit_texture(nir_tex_instr *instr)
offset_components = instr->coord_components;
break;
case nir_tex_src_projector:
unreachable("should be lowered");
projector = retype(src, BRW_REGISTER_TYPE_F);
break;
case nir_tex_src_sampler_offset: {
/* Figure out the highest possible sampler index and mark it as used */
@ -1820,6 +1822,13 @@ fs_visitor::nir_emit_texture(nir_tex_instr *instr)
}
}
if (projector.file != BAD_FILE) {
fs_reg invproj = vgrf(glsl_type::float_type);
emit_math(SHADER_OPCODE_RCP, invproj, projector);
for (int i = 0; i < 3; i++)
emit(MUL(offset(coordinate, i), offset(coordinate, i), invproj));
}
if (instr->op == nir_texop_txf_ms) {
if (brw->gen >= 7 &&
key_tex->compressed_multisample_layout_mask & (1 << sampler)) {