From: Timothy Arceri Date: Mon, 23 May 2016 06:48:05 +0000 (+1000) Subject: i965: enable component packing for vs and fs X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7f53fead5cf9a85c74a94d359dd5fccfbb87856c;p=mesa.git i965: enable component packing for vs and fs Rather than trying to work out the total number of components used at a location we simply treat all outputs as vec4s. This removes the need for complex code looping over varyings to match packed locations and the need for storing the total number of components used at each location. Reviewed-by: Alejandro Piñeiro Reviewed-by: Kenneth Graunke --- diff --git a/src/mesa/drivers/dri/i965/brw_fs.h b/src/mesa/drivers/dri/i965/brw_fs.h index 574475f071a..fc1e1c4a2c5 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.h +++ b/src/mesa/drivers/dri/i965/brw_fs.h @@ -317,7 +317,6 @@ public: fs_reg frag_stencil; fs_reg sample_mask; fs_reg outputs[VARYING_SLOT_MAX]; - unsigned output_components[VARYING_SLOT_MAX]; fs_reg dual_src_output; bool do_dual_src; int first_non_payload_grf; diff --git a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp index 4d4c94a55bd..65bca6d6dbc 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp @@ -67,13 +67,12 @@ fs_visitor::nir_setup_single_output_varying(fs_reg *reg, } } else { assert(type->is_scalar() || type->is_vector()); - unsigned num_elements = type->vector_elements; + unsigned num_iter = 1; if (type->is_double()) - num_elements *= 2; - for (unsigned count = 0; count < num_elements; count += 4) { + num_iter = 2; + for (unsigned count = 0; count < num_iter; count++) { this->outputs[*location] = *reg; - this->output_components[*location] = MIN2(4, num_elements - count); - *reg = offset(*reg, bld, this->output_components[*location]); + *reg = offset(*reg, bld, 4); (*location)++; } } @@ -114,7 +113,6 @@ fs_visitor::nir_setup_outputs() /* Writing gl_FragColor outputs to all color regions. */ for (unsigned int i = 0; i < MAX2(key->nr_color_regions, 1); i++) { this->outputs[i] = reg; - this->output_components[i] = 4; } } else if (var->data.location == FRAG_RESULT_DEPTH) { this->frag_depth = reg; @@ -123,8 +121,6 @@ fs_visitor::nir_setup_outputs() } else if (var->data.location == FRAG_RESULT_SAMPLE_MASK) { this->sample_mask = reg; } else { - int vector_elements = var->type->without_array()->vector_elements; - /* gl_FragData or a user-defined FS output */ assert(var->data.location >= FRAG_RESULT_DATA0 && var->data.location < FRAG_RESULT_DATA0+BRW_MAX_DRAW_BUFFERS); @@ -132,8 +128,7 @@ fs_visitor::nir_setup_outputs() /* General color output. */ for (unsigned int i = 0; i < MAX2(1, var->type->length); i++) { int output = var->data.location - FRAG_RESULT_DATA0 + i; - this->outputs[output] = offset(reg, bld, vector_elements * i); - this->output_components[output] = vector_elements; + this->outputs[output] = offset(reg, bld, 4 * i); } } break; @@ -2360,6 +2355,7 @@ fs_visitor::nir_emit_vs_intrinsic(const fs_builder &bld, case nir_intrinsic_load_input: { fs_reg src = fs_reg(ATTR, instr->const_index[0], dest.type); + unsigned first_component = nir_intrinsic_component(instr); unsigned num_components = instr->num_components; enum brw_reg_type type = dest.type; @@ -2368,7 +2364,7 @@ fs_visitor::nir_emit_vs_intrinsic(const fs_builder &bld, src = offset(src, bld, const_offset->u32[0]); for (unsigned j = 0; j < num_components; j++) { - bld.MOV(offset(dest, bld, j), offset(src, bld, j)); + bld.MOV(offset(dest, bld, j), offset(src, bld, j + first_component)); } if (type == BRW_REGISTER_TYPE_DF) { @@ -4103,6 +4099,7 @@ fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr new_dest = offset(new_dest, bld, const_offset->u32[0]); unsigned num_components = instr->num_components; + unsigned first_component = nir_intrinsic_component(instr); unsigned bit_size = instr->src[0].is_ssa ? instr->src[0].ssa->bit_size : instr->src[0].reg.reg->bit_size; if (bit_size == 64) { @@ -4116,7 +4113,8 @@ fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr } for (unsigned j = 0; j < num_components; j++) { - bld.MOV(offset(new_dest, bld, j), offset(src, bld, j)); + bld.MOV(offset(new_dest, bld, j + first_component), + offset(src, bld, j)); } break; } diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp index 156a6306b77..6d843749f44 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp @@ -459,8 +459,7 @@ fs_visitor::emit_fb_writes() src0_alpha = offset(outputs[0], bld, 3); inst = emit_single_fb_write(abld, this->outputs[target], reg_undef, - src0_alpha, - this->output_components[target]); + src0_alpha, 4); inst->target = target; } } @@ -545,9 +544,7 @@ void fs_visitor::compute_clip_distance(gl_clip_plane *clip_planes) const fs_builder abld = bld.annotate("user clip distances"); this->outputs[VARYING_SLOT_CLIP_DIST0] = vgrf(glsl_type::vec4_type); - this->output_components[VARYING_SLOT_CLIP_DIST0] = 4; this->outputs[VARYING_SLOT_CLIP_DIST1] = vgrf(glsl_type::vec4_type); - this->output_components[VARYING_SLOT_CLIP_DIST1] = 4; for (int i = 0; i < key->nr_userclip_plane_consts; i++) { fs_reg u = userplane[i]; @@ -724,10 +721,8 @@ fs_visitor::emit_urb_writes(const fs_reg &gs_vertex_count) sources[length++] = reg; } } else { - for (unsigned i = 0; i < output_components[varying]; i++) + for (unsigned i = 0; i < 4; i++) sources[length++] = offset(this->outputs[varying], bld, i); - for (unsigned i = output_components[varying]; i < 4; i++) - sources[length++] = brw_imm_d(0); } break; } @@ -901,7 +896,6 @@ fs_visitor::init() this->nir_ssa_values = NULL; memset(&this->payload, 0, sizeof(this->payload)); - memset(this->output_components, 0, sizeof(this->output_components)); this->source_depth_to_render_target = false; this->runtime_check_aads_emit = false; this->first_non_payload_grf = 0; diff --git a/src/mesa/drivers/dri/i965/brw_nir.c b/src/mesa/drivers/dri/i965/brw_nir.c index fe7653137ea..388ae9e0386 100644 --- a/src/mesa/drivers/dri/i965/brw_nir.c +++ b/src/mesa/drivers/dri/i965/brw_nir.c @@ -302,8 +302,8 @@ brw_nir_lower_vue_outputs(nir_shader *nir, if (is_scalar) { nir_assign_var_locations(&nir->outputs, &nir->num_outputs, VARYING_SLOT_VAR0, - type_size_scalar); - nir_lower_io(nir, nir_var_shader_out, type_size_scalar); + type_size_vec4_times_4); + nir_lower_io(nir, nir_var_shader_out, type_size_vec4_times_4); } else { nir_foreach_variable(var, &nir->outputs) var->data.driver_location = var->data.location; @@ -340,8 +340,8 @@ void brw_nir_lower_fs_outputs(nir_shader *nir) { nir_assign_var_locations(&nir->outputs, &nir->num_outputs, - FRAG_RESULT_DATA0, type_size_scalar); - nir_lower_io(nir, nir_var_shader_out, type_size_scalar); + FRAG_RESULT_DATA0, type_size_vec4_times_4); + nir_lower_io(nir, nir_var_shader_out, type_size_vec4_times_4); } void