Re: [Mesa-dev] [PATCH 1/4] ac/shader: scan output usage mask for VS and TES

[Dave Airlie]

On 1 March 2018 at 20:54, Samuel Pitoiset  wrote:
> Signed-off-by: Samuel Pitoiset 

For the series:

Reviewed-by: Dave Airlie 

Dave.
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[Mesa-dev] [PATCH 1/4] ac/shader: scan output usage mask for VS and TES

[Samuel Pitoiset]

Signed-off-by: Samuel Pitoiset 
---
 src/amd/common/ac_shader_info.c | 18 ++
 src/amd/common/ac_shader_info.h |  4 
 2 files changed, 22 insertions(+)

diff --git a/src/amd/common/ac_shader_info.c b/src/amd/common/ac_shader_info.c
index 57d7edec76..98de963147 100644
--- a/src/amd/common/ac_shader_info.c
+++ b/src/amd/common/ac_shader_info.c
@@ -146,6 +146,24 @@ gather_intrinsic_info(const nir_shader *nir, const 
nir_intrinsic_instr *instr,
}
}
break;
+   case nir_intrinsic_store_var: {
+   nir_deref_var *dvar = instr->variables[0];
+   nir_variable *var = dvar->var;
+
+   if (var->data.mode == nir_var_shader_out) {
+   unsigned idx = var->data.location;
+   unsigned comp = var->data.location_frac;
+
+   if (nir->info.stage == MESA_SHADER_VERTEX) {
+   info->vs.output_usage_mask[idx] |=
+   instr->const_index[0] << comp;
+   } else if (nir->info.stage == MESA_SHADER_TESS_EVAL) {
+   info->tes.output_usage_mask[idx] |=
+   instr->const_index[0] << comp;
+   }
+   }
+   break;
+   }
default:
break;
}
diff --git a/src/amd/common/ac_shader_info.h b/src/amd/common/ac_shader_info.h
index 60ddfd2d71..12a1dcf915 100644
--- a/src/amd/common/ac_shader_info.h
+++ b/src/amd/common/ac_shader_info.h
@@ -37,10 +37,14 @@ struct ac_shader_info {
bool uses_prim_id;
struct {
uint8_t input_usage_mask[VERT_ATTRIB_MAX];
+   uint8_t output_usage_mask[VARYING_SLOT_VAR31 + 1];
bool has_vertex_buffers; /* needs vertex buffers and base/start 
*/
bool needs_draw_id;
bool needs_instance_id;
} vs;
+   struct {
+   uint8_t output_usage_mask[VARYING_SLOT_VAR31 + 1];
+   } tes;
struct {
bool force_persample;
bool needs_sample_positions;
-- 
2.16.2

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