[Mesa-dev] [PATCH 2/2] anv/pipeline: set active_stages early

[Caio Marcelo de Oliveira Filho]

Since the intermediate states of active_stages are not used,
i.e. active_stages is read only after all stages were set into it,
just set its value before compiling the shaders.

This will allow to conditionally run certain passes based on what
other shaders are being used, e.g. a certain pass might only be
applicable to the vertex shader if there's no geometry or tessellation
shader being used.
---
 src/intel/vulkan/anv_pipeline.c  | 12 +++++++++---
 src/intel/vulkan/genX_pipeline.c |  1 +
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/intel/vulkan/anv_pipeline.c b/src/intel/vulkan/anv_pipeline.c
index cb34f3be77..fba0039240 100644
--- a/src/intel/vulkan/anv_pipeline.c
+++ b/src/intel/vulkan/anv_pipeline.c
@@ -501,7 +501,6 @@ anv_pipeline_add_compiled_stage(struct anv_pipeline *pipeline,
                                 struct anv_shader_bin *shader)
 {
    pipeline->shaders[stage] = shader;
-   pipeline->active_stages |= mesa_to_vk_shader_stage(stage);
 }
 
 static VkResult
@@ -1334,11 +1333,18 @@ anv_pipeline_init(struct anv_pipeline *pipeline,
    const VkPipelineShaderStageCreateInfo *pStages[MESA_SHADER_STAGES] = {};
    struct anv_shader_module *modules[MESA_SHADER_STAGES] = {};
    for (uint32_t i = 0; i < pCreateInfo->stageCount; i++) {
-      gl_shader_stage stage = ffs(pCreateInfo->pStages[i].stage) - 1;
+      VkShaderStageFlagBits vk_stage = pCreateInfo->pStages[i].stage;
+      gl_shader_stage stage = ffs(vk_stage) - 1;
       pStages[stage] = &pCreateInfo->pStages[i];
       modules[stage] = anv_shader_module_from_handle(pStages[stage]->module);
+      pipeline->active_stages |= vk_stage;
    }
 
+   if (pipeline->active_stages & VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT)
+      pipeline->active_stages |= VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT;
+
+   assert(pipeline->active_stages & VK_SHADER_STAGE_VERTEX_BIT);
+
    if (modules[MESA_SHADER_VERTEX]) {
       result = anv_pipeline_compile_vs(pipeline, cache, pCreateInfo,
                                        modules[MESA_SHADER_VERTEX],
@@ -1378,7 +1384,7 @@ anv_pipeline_init(struct anv_pipeline *pipeline,
          goto compile_fail;
    }
 
-   assert(pipeline->active_stages & VK_SHADER_STAGE_VERTEX_BIT);
+   assert(pipeline->shaders[MESA_SHADER_VERTEX]);
 
    anv_pipeline_setup_l3_config(pipeline, false);
 
diff --git a/src/intel/vulkan/genX_pipeline.c b/src/intel/vulkan/genX_pipeline.c
index 9c08bc2033..eb2d414735 100644
--- a/src/intel/vulkan/genX_pipeline.c
+++ b/src/intel/vulkan/genX_pipeline.c
@@ -1787,6 +1787,7 @@ compute_pipeline_create(
    pipeline->needs_data_cache = false;
 
    assert(pCreateInfo->stage.stage == VK_SHADER_STAGE_COMPUTE_BIT);
+   pipeline->active_stages |= VK_SHADER_STAGE_COMPUTE_BIT;
    ANV_FROM_HANDLE(anv_shader_module, module,  pCreateInfo->stage.module);
    result = anv_pipeline_compile_cs(pipeline, cache, pCreateInfo, module,
                                     pCreateInfo->stage.pName,
-- 
2.16.2