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i965/vec4: Use NIR to do GS input remapping

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We're already doing this in the FS back-end.  This just does the same
thing in the vec4 back-end.

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Jason Ekstrand
2017-05-04 16:36:26 -07:00
parent e31042ab40
commit 2e9916ea04
9 changed files with 59 additions and 101 deletions
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10
src/intel/compiler/brw_vec4_gs_nir.cpp
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@@ -66,8 +66,10 @@ vec4_gs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
nir_const_value *vertex = nir_src_as_const_value(instr->src[0]);
nir_const_value *offset_reg = nir_src_as_const_value(instr->src[1]);
const unsigned input_array_stride = prog_data->urb_read_length * 2;
if (nir_dest_bit_size(instr->dest) == 64) {
src = src_reg(ATTR, BRW_VARYING_SLOT_COUNT * vertex->u32[0] +
src = src_reg(ATTR, input_array_stride * vertex->u32[0] +
instr->const_index[0] + offset_reg->u32[0],
glsl_type::dvec4_type);
@@ -85,15 +87,11 @@ vec4_gs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
/* Make up a type...we have no way of knowing... */
const glsl_type *const type = glsl_type::ivec(instr->num_components);
src = src_reg(ATTR, BRW_VARYING_SLOT_COUNT * vertex->u32[0] +
src = src_reg(ATTR, input_array_stride * vertex->u32[0] +
instr->const_index[0] + offset_reg->u32[0],
type);
src.swizzle = BRW_SWZ_COMP_INPUT(nir_intrinsic_component(instr));
/* gl_PointSize is passed in the .w component of the VUE header */
if (instr->const_index[0] == VARYING_SLOT_PSIZ)
src.swizzle = BRW_SWIZZLE_WWWW;
dest = get_nir_dest(instr->dest, src.type);
dest.writemask = brw_writemask_for_size(instr->num_components);
emit(MOV(dest, src));