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ir3: Use shared mediump output lowering 

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Acked-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4716>
This commit is contained in:
Alyssa Rosenzweig 2020-04-23 19:12:43 -04:00 committed by Marge Bot
parent 42c9bbaeed
commit 6943eda5c9
1 changed files with 1 additions and 49 deletions
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50
src/freedreno/ir3/ir3_shader.c
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@ -289,54 +289,6 @@ ir3_shader_destroy(struct ir3_shader *shader)
free(shader);
}
static bool
lower_output_var(nir_shader *nir, int location)
{
nir_foreach_variable (var, &nir->outputs) {
if (var->data.driver_location == location &&
((var->data.precision == GLSL_PRECISION_MEDIUM) ||
(var->data.precision == GLSL_PRECISION_LOW))) {
if (glsl_get_base_type(var->type) == GLSL_TYPE_FLOAT)
var->type = glsl_float16_type(var->type);
return glsl_get_base_type(var->type) == GLSL_TYPE_FLOAT16;
}
}
return false;
}
static void
lower_mediump_outputs(nir_shader *nir)
{
nir_function_impl *impl = nir_shader_get_entrypoint(nir);
assert(impl);
/* Get rid of old derefs before we change the types of the variables */
nir_opt_dce(nir);
nir_builder b;
nir_builder_init(&b, impl);
nir_foreach_block_safe (block, impl) {
nir_foreach_instr_safe (instr, block) {
if (instr->type != nir_instr_type_intrinsic)
continue;
nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr);
if (intr->intrinsic != nir_intrinsic_store_output)
continue;
if (!lower_output_var(nir, nir_intrinsic_base(intr)))
continue;
b.cursor = nir_before_instr(&intr->instr);
nir_instr_rewrite_src(&intr->instr, &intr->src[0],
nir_src_for_ssa(nir_f2f16(&b, intr->src[0].ssa)));
}
}
}
struct ir3_shader *
ir3_shader_from_nir(struct ir3_compiler *compiler, nir_shader *nir)
{
@ -353,7 +305,7 @@ ir3_shader_from_nir(struct ir3_compiler *compiler, nir_shader *nir)
if (compiler->gpu_id >= 600 &&
nir->info.stage == MESA_SHADER_FRAGMENT &&
!(ir3_shader_debug & IR3_DBG_NOFP16))
lower_mediump_outputs(nir);
NIR_PASS_V(nir, nir_lower_mediump_outputs);
if (nir->info.stage == MESA_SHADER_FRAGMENT) {
/* NOTE: lower load_barycentric_at_sample first, since it