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svga: add support for TXL2 opcode

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This patch adds support for cubemap array texture lookup with
explicit LOD.

Fixes piglit test arb_texture_cube_map_array-cubemap-lod

Reviewed-by: Neha Bhende <bhenden@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Charmaine Lee 2017-05-05 14:24:53 -07:00 • committed by Brian Paul
parent 62402be407
commit 1df17fc697
1 changed files with 46 additions and 0 deletions
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46
src/gallium/drivers/svga/svga_tgsi_vgpu10.c
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@ -5323,6 +5323,50 @@ emit_txl_txb(struct svga_shader_emitter_v10 *emit,
}
/**
* Emit code for TGSI_OPCODE_TXL2 (explicit LOD) for cubemap array.
*/
static boolean
emit_txl2(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
unsigned target = inst->Texture.Texture;
unsigned opcode, unit;
int offsets[3];
struct tgsi_full_src_register coord, lod;
struct tex_swizzle_info swz_info;
assert(inst->Instruction.Opcode == TGSI_OPCODE_TXL2);
lod = scalar_src(&inst->Src[1], TGSI_SWIZZLE_X);
unit = inst->Src[2].Register.Index;
begin_tex_swizzle(emit, unit, inst, tgsi_is_shadow_target(target),
&swz_info);
get_texel_offsets(emit, inst, offsets);
coord = setup_texcoord(emit, unit, &inst->Src[0]);
/* SAMPLE_L dst, coord(s0), resource, sampler, lod(s3) */
begin_emit_instruction(emit);
opcode = VGPU10_OPCODE_SAMPLE_L;
emit_sample_opcode(emit, opcode, inst->Instruction.Saturate, offsets);
emit_dst_register(emit, get_tex_swizzle_dst(&swz_info));
emit_src_register(emit, &coord);
emit_resource_register(emit, unit);
emit_sampler_register(emit, unit);
emit_src_register(emit, &lod);
end_emit_instruction(emit);
end_tex_swizzle(emit, &swz_info);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_TXQ (texture query) instruction.
*/
@ -5588,6 +5632,8 @@ emit_vgpu10_instruction(struct svga_shader_emitter_v10 *emit,
return emit_txd(emit, inst);
case TGSI_OPCODE_TXF:
return emit_txf(emit, inst);
case TGSI_OPCODE_TXL2:
return emit_txl2(emit, inst);
case TGSI_OPCODE_TXQ:
return emit_txq(emit, inst);
case TGSI_OPCODE_UIF: