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nir: add mediump flag to IO semantics

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Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6621>
This commit is contained in:
Marek Olšák
2020-09-06 00:24:31 -04:00
committed by Marge Bot
parent 5e9e457383
commit c2ae39e0ce
3 changed files with 15 additions and 1 deletions
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3
src/compiler/nir/nir.h
View File

@@ -1784,7 +1784,8 @@ typedef struct {
unsigned dual_source_blend_index:1;
unsigned fb_fetch_output:1; /* for GL_KHR_blend_equation_advanced */
unsigned gs_streams:8; /* xxyyzzww: 2-bit stream index for each component */
unsigned _pad:9;
unsigned medium_precision:1; /* GLSL mediump qualifier */
unsigned _pad:8;
} nir_io_semantics;
#define NIR_INTRINSIC_MAX_INPUTS 5

9
src/compiler/nir/nir_lower_io.c
View File

@@ -309,6 +309,9 @@ emit_load(struct lower_io_state *state,
semantics.location = var->data.location;
semantics.num_slots = get_number_of_slots(state, var);
semantics.fb_fetch_output = var->data.fb_fetch_output;
semantics.medium_precision =
var->data.precision == GLSL_PRECISION_MEDIUM ||
var->data.precision == GLSL_PRECISION_LOW;
nir_intrinsic_set_io_semantics(load, semantics);
}
@@ -431,6 +434,9 @@ emit_store(struct lower_io_state *state, nir_ssa_def *data,
semantics.num_slots = get_number_of_slots(state, var);
semantics.dual_source_blend_index = var->data.index;
semantics.gs_streams = gs_streams;
semantics.medium_precision =
var->data.precision == GLSL_PRECISION_MEDIUM ||
var->data.precision == GLSL_PRECISION_LOW;
nir_intrinsic_set_io_semantics(store, semantics);
nir_builder_instr_insert(b, &store->instr);
@@ -562,6 +568,9 @@ lower_interpolate_at(nir_intrinsic_instr *intrin, struct lower_io_state *state,
nir_io_semantics semantics = {0};
semantics.location = var->data.location;
semantics.num_slots = get_number_of_slots(state, var);
semantics.medium_precision =
var->data.precision == GLSL_PRECISION_MEDIUM ||
var->data.precision == GLSL_PRECISION_LOW;
nir_intrinsic_set_io_semantics(load, semantics);
load->src[0] = nir_src_for_ssa(&bary_setup->dest.ssa);

4
src/compiler/nir/nir_print.c
View File

@@ -982,6 +982,10 @@ print_intrinsic_instr(nir_intrinsic_instr *instr, print_state *state)
}
fprintf(fp, ")");
}
if (state->shader->info.stage == MESA_SHADER_FRAGMENT &&
nir_intrinsic_io_semantics(instr).medium_precision) {
fprintf(fp, " mediump");
}
}
break;