From: Dave Airlie <[email protected]>

The fragment shader was trying to read this, but nothing
was exporting it from the vertex shader. This handles
it like the prim id export.

Fixes:
dEQP-VK.multiview.secondary_cmd_buffer.*
dEQP-VK.multiview.index.fragment_shader.*

Signed-off-by: Dave Airlie <[email protected]>
---
 src/amd/vulkan/radv_nir_to_llvm.c | 18 ++++++++++++++++--
 src/amd/vulkan/radv_pipeline.c    |  4 ++++
 src/amd/vulkan/radv_shader.h      |  2 ++
 src/amd/vulkan/radv_shader_info.c |  2 ++
 4 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/src/amd/vulkan/radv_nir_to_llvm.c 
b/src/amd/vulkan/radv_nir_to_llvm.c
index cedcd38b3a2..e2e64463fae 100644
--- a/src/amd/vulkan/radv_nir_to_llvm.c
+++ b/src/amd/vulkan/radv_nir_to_llvm.c
@@ -2183,7 +2183,7 @@ radv_load_output(struct radv_shader_context *ctx, 
unsigned index, unsigned chan)
 
 static void
 handle_vs_outputs_post(struct radv_shader_context *ctx,
-                      bool export_prim_id,
+                      bool export_prim_id, bool export_layer_id,
                       struct radv_vs_output_info *outinfo)
 {
        uint32_t param_count = 0;
@@ -2363,6 +2363,18 @@ handle_vs_outputs_post(struct radv_shader_context *ctx,
                outinfo->export_prim_id = true;
        }
 
+       if (export_layer_id) {
+               LLVMValueRef values[4];
+
+               values[0] = layer_value;
+               for (unsigned j = 1; j < 4; j++)
+                       values[j] = ctx->ac.f32_0;
+
+               radv_export_param(ctx, param_count, values, 0xf);
+
+               outinfo->vs_output_param_offset[VARYING_SLOT_LAYER] = 
param_count++;
+       }
+
        outinfo->pos_exports = num_pos_exports;
        outinfo->param_exports = param_count;
 }
@@ -2825,6 +2837,7 @@ handle_shader_outputs_post(struct ac_shader_abi *abi, 
unsigned max_outputs,
                        handle_es_outputs_post(ctx, 
&ctx->shader_info->vs.es_info);
                else
                        handle_vs_outputs_post(ctx, 
ctx->options->key.vs.export_prim_id,
+                                              
ctx->options->key.vs.export_layer_id,
                                               &ctx->shader_info->vs.outinfo);
                break;
        case MESA_SHADER_FRAGMENT:
@@ -2841,6 +2854,7 @@ handle_shader_outputs_post(struct ac_shader_abi *abi, 
unsigned max_outputs,
                        handle_es_outputs_post(ctx, 
&ctx->shader_info->tes.es_info);
                else
                        handle_vs_outputs_post(ctx, 
ctx->options->key.tes.export_prim_id,
+                                              
ctx->options->key.tes.export_layer_id,
                                               &ctx->shader_info->tes.outinfo);
                break;
        default:
@@ -3439,7 +3453,7 @@ ac_gs_copy_shader_emit(struct radv_shader_context *ctx)
                }
                idx += slot_inc;
        }
-       handle_vs_outputs_post(ctx, false, &ctx->shader_info->vs.outinfo);
+       handle_vs_outputs_post(ctx, false, false, 
&ctx->shader_info->vs.outinfo);
 }
 
 void
diff --git a/src/amd/vulkan/radv_pipeline.c b/src/amd/vulkan/radv_pipeline.c
index 52a6d23718e..89c5e699414 100644
--- a/src/amd/vulkan/radv_pipeline.c
+++ b/src/amd/vulkan/radv_pipeline.c
@@ -1718,8 +1718,12 @@ void radv_create_shaders(struct radv_pipeline *pipeline,
                /* TODO: These are no longer used as keys we should refactor 
this */
                keys[MESA_SHADER_VERTEX].vs.export_prim_id =
                        
pipeline->shaders[MESA_SHADER_FRAGMENT]->info.info.ps.prim_id_input;
+               keys[MESA_SHADER_VERTEX].vs.export_layer_id =
+                       
pipeline->shaders[MESA_SHADER_FRAGMENT]->info.info.ps.layer_input;
                keys[MESA_SHADER_TESS_EVAL].tes.export_prim_id =
                        
pipeline->shaders[MESA_SHADER_FRAGMENT]->info.info.ps.prim_id_input;
+               keys[MESA_SHADER_TESS_EVAL].tes.export_layer_id =
+                       
pipeline->shaders[MESA_SHADER_FRAGMENT]->info.info.ps.layer_input;
        }
 
        if (device->physical_device->rad_info.chip_class >= GFX9 && 
modules[MESA_SHADER_TESS_CTRL]) {
diff --git a/src/amd/vulkan/radv_shader.h b/src/amd/vulkan/radv_shader.h
index 40e92b52f38..ae30d6125b1 100644
--- a/src/amd/vulkan/radv_shader.h
+++ b/src/amd/vulkan/radv_shader.h
@@ -58,11 +58,13 @@ struct radv_vs_variant_key {
        uint32_t as_es:1;
        uint32_t as_ls:1;
        uint32_t export_prim_id:1;
+       uint32_t export_layer_id:1;
 };
 
 struct radv_tes_variant_key {
        uint32_t as_es:1;
        uint32_t export_prim_id:1;
+       uint32_t export_layer_id:1;
        uint8_t num_patches;
        uint8_t tcs_num_outputs;
 };
diff --git a/src/amd/vulkan/radv_shader_info.c 
b/src/amd/vulkan/radv_shader_info.c
index ded3281516d..7208bd2f587 100644
--- a/src/amd/vulkan/radv_shader_info.c
+++ b/src/amd/vulkan/radv_shader_info.c
@@ -90,6 +90,8 @@ gather_intrinsic_info(const nir_shader *nir, const 
nir_intrinsic_instr *instr,
                break;
        case nir_intrinsic_load_view_index:
                info->needs_multiview_view_index = true;
+               if (nir->info.stage == MESA_SHADER_FRAGMENT)
+                       info->ps.layer_input = true;
                break;
        case nir_intrinsic_load_invocation_id:
                info->uses_invocation_id = true;
-- 
2.14.3

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