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st/mesa: use IO intrinsics in st_nir_lower_fog

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Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32779>
This commit is contained in:
Marek Olšák 2024-12-24 10:34:42 -05:00 • committed by Marge Bot
parent a408c0aa2b
commit 02b7396568
1 changed files with 13 additions and 4 deletions
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17
src/mesa/state_tracker/st_nir_lower_fog.c
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@ -11,10 +11,19 @@ static nir_def *
fog_result(nir_builder *b, nir_def *color, enum gl_fog_mode fog_mode, struct gl_program_parameter_list *paramList)
{
nir_shader *s = b->shader;
nir_variable *fogc_var =
nir_create_variable_with_location(s, nir_var_shader_in, VARYING_SLOT_FOGC, glsl_float_type());
nir_def *fogc = nir_load_var(b, fogc_var);
s->info.inputs_read |= VARYING_BIT_FOGC;
nir_def *fogc;
if (b->shader->info.io_lowered) {
nir_def *baryc = nir_load_barycentric_pixel(b, 32,
.interp_mode = INTERP_MODE_SMOOTH);
fogc = nir_load_interpolated_input(b, 1, 32, baryc, nir_imm_int(b, 0),
.io_semantics.location = VARYING_SLOT_FOGC);
} else {
nir_variable *fogc_var =
nir_create_variable_with_location(s, nir_var_shader_in, VARYING_SLOT_FOGC, glsl_float_type());
s->info.inputs_read |= VARYING_BIT_FOGC;
fogc = nir_load_var(b, fogc_var);
}
static const gl_state_index16 fog_params_tokens[STATE_LENGTH] = {STATE_FOG_PARAMS_OPTIMIZED};
static const gl_state_index16 fog_color_tokens[STATE_LENGTH] = {STATE_FOG_COLOR};