fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-08 17:48:10 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

i965/nir/vec4: Implement nir_intrinsic_load_ssbo

Browse source 
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
This commit is contained in:
Iago Toral Quiroga 2015-09-10 12:01:02 +02:00 • committed by Samuel Iglesias Gonsalvez
parent 5b186aafe7
commit e3f9c7829c
1 changed files with 54 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

54
src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
View file

@ -712,6 +712,60 @@ vec4_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
break;
}
case nir_intrinsic_load_ssbo_indirect:
has_indirect = true;
/* fallthrough */
case nir_intrinsic_load_ssbo: {
assert(devinfo->gen >= 7);
nir_const_value *const_uniform_block =
nir_src_as_const_value(instr->src[0]);
src_reg surf_index;
if (const_uniform_block) {
unsigned index = prog_data->base.binding_table.ubo_start +
const_uniform_block->u[0];
surf_index = src_reg(index);
brw_mark_surface_used(&prog_data->base, index);
} else {
surf_index = src_reg(this, glsl_type::uint_type);
emit(ADD(dst_reg(surf_index), get_nir_src(instr->src[0], 1),
src_reg(prog_data->base.binding_table.ubo_start)));
surf_index = emit_uniformize(surf_index);
/* Assume this may touch any UBO. It would be nice to provide
* a tighter bound, but the array information is already lowered away.
*/
brw_mark_surface_used(&prog_data->base,
prog_data->base.binding_table.ubo_start +
shader_prog->NumUniformBlocks - 1);
}
src_reg offset_reg = src_reg(this, glsl_type::uint_type);
unsigned const_offset_bytes = 0;
if (has_indirect) {
emit(MOV(dst_reg(offset_reg), get_nir_src(instr->src[1], 1)));
} else {
const_offset_bytes = instr->const_index[0];
emit(MOV(dst_reg(offset_reg), src_reg(const_offset_bytes)));
}
/* Read the vector */
const vec4_builder bld = vec4_builder(this).at_end()
.annotate(current_annotation, base_ir);
src_reg read_result = emit_untyped_read(bld, surf_index, offset_reg,
1 /* dims */, 4 /* size*/,
BRW_PREDICATE_NONE);
dst_reg dest = get_nir_dest(instr->dest);
read_result.type = dest.type;
read_result.swizzle = brw_swizzle_for_size(instr->num_components);
emit(MOV(dest, read_result));
break;
}
case nir_intrinsic_load_vertex_id:
unreachable("should be lowered by lower_vertex_id()");