radv: Remove remaining hard coded references to VS.

Reviewed-by: Dave Airlie <airlied@redhat.com>

src/amd/vulkan/radv_cmd_buffer.c

@@ -493,6 +493,14 @@ radv_lookup_user_sgpr(struct radv_pipeline *pipeline,
 		      gl_shader_stage stage,
 		      int idx)
 {
+	if (stage == MESA_SHADER_VERTEX) {
+		if (pipeline->shaders[MESA_SHADER_VERTEX])
+			return &pipeline->shaders[MESA_SHADER_VERTEX]->info.user_sgprs_locs.shader_data[idx];
+		if (pipeline->shaders[MESA_SHADER_TESS_CTRL])
+			return &pipeline->shaders[MESA_SHADER_TESS_CTRL]->info.user_sgprs_locs.shader_data[idx];
+		if (pipeline->shaders[MESA_SHADER_GEOMETRY])
+			return &pipeline->shaders[MESA_SHADER_GEOMETRY]->info.user_sgprs_locs.shader_data[idx];
+	}
 	return &pipeline->shaders[stage]->info.user_sgprs_locs.shader_data[idx];
 }
 
@@ -716,9 +724,12 @@ radv_emit_vertex_shader(struct radv_cmd_buffer *cmd_buffer,
 {
 	struct radv_shader_variant *vs;
 
-	assert (pipeline->shaders[MESA_SHADER_VERTEX]);
+	radeon_set_context_reg(cmd_buffer->cs, R_028A84_VGT_PRIMITIVEID_EN, pipeline->graphics.vgt_primitiveid_en);
 
+	/* Skip shaders merged into HS/GS */
 	vs = pipeline->shaders[MESA_SHADER_VERTEX];
+	if (!vs)
+		return;
 
 	if (vs->info.vs.as_ls)
 		radv_emit_hw_ls(cmd_buffer, vs);
@@ -726,8 +737,6 @@ radv_emit_vertex_shader(struct radv_cmd_buffer *cmd_buffer,
 		radv_emit_hw_es(cmd_buffer, vs, &vs->info.vs.es_info);
 	else
 		radv_emit_hw_vs(cmd_buffer, pipeline, vs, &vs->info.vs.outinfo);
-
-	radeon_set_context_reg(cmd_buffer->cs, R_028A84_VGT_PRIMITIVEID_EN, pipeline->graphics.vgt_primitiveid_en);
 }
 
 
@@ -1697,7 +1706,7 @@ radv_cmd_buffer_update_vertex_descriptors(struct radv_cmd_buffer *cmd_buffer)
 
 	if ((cmd_buffer->state.pipeline != cmd_buffer->state.emitted_pipeline || cmd_buffer->state.vb_dirty) &&
 	    cmd_buffer->state.pipeline->vertex_elements.count &&
-	    cmd_buffer->state.pipeline->shaders[MESA_SHADER_VERTEX]->info.info.vs.has_vertex_buffers) {
+	    radv_get_vertex_shader(cmd_buffer->state.pipeline)->info.info.vs.has_vertex_buffers) {
 		struct radv_vertex_elements_info *velems = &cmd_buffer->state.pipeline->vertex_elements;
 		unsigned vb_offset;
 		void *vb_ptr;
@@ -2989,7 +2998,7 @@ radv_cs_emit_indirect_draw_packet(struct radv_cmd_buffer *cmd_buffer,
 	struct radeon_winsys_cs *cs = cmd_buffer->cs;
 	unsigned di_src_sel = indexed ? V_0287F0_DI_SRC_SEL_DMA
 	                              : V_0287F0_DI_SRC_SEL_AUTO_INDEX;
-	bool draw_id_enable = cmd_buffer->state.pipeline->shaders[MESA_SHADER_VERTEX]->info.info.vs.needs_draw_id;
+	bool draw_id_enable = radv_get_vertex_shader(cmd_buffer->state.pipeline)->info.info.vs.needs_draw_id;
 	uint32_t base_reg = cmd_buffer->state.pipeline->graphics.vtx_base_sgpr;
 	assert(base_reg);
 

src/amd/vulkan/radv_pipeline.c

@@ -1207,6 +1207,16 @@ static void si_multiwave_lds_size_workaround(struct radv_device *device,
 		*lds_size = MAX2(*lds_size, 8);
 }
 
+struct radv_shader_variant *
+radv_get_vertex_shader(struct radv_pipeline *pipeline)
+{
+	if (pipeline->shaders[MESA_SHADER_VERTEX])
+		return pipeline->shaders[MESA_SHADER_VERTEX];
+	if (pipeline->shaders[MESA_SHADER_TESS_CTRL])
+		return pipeline->shaders[MESA_SHADER_TESS_CTRL];
+	return pipeline->shaders[MESA_SHADER_GEOMETRY];
+}
+
 static void
 calculate_tess_state(struct radv_pipeline *pipeline,
 		     const VkGraphicsPipelineCreateInfo *pCreateInfo)
@@ -1223,7 +1233,7 @@ calculate_tess_state(struct radv_pipeline *pipeline,
 
 	/* This calculates how shader inputs and outputs among VS, TCS, and TES
 	 * are laid out in LDS. */
-	num_tcs_inputs = util_last_bit64(pipeline->shaders[MESA_SHADER_VERTEX]->info.vs.outputs_written);
+	num_tcs_inputs = util_last_bit64(radv_get_vertex_shader(pipeline)->info.vs.outputs_written);
 
 	num_tcs_outputs = util_last_bit64(pipeline->shaders[MESA_SHADER_TESS_CTRL]->info.tcs.outputs_written); //tcs->outputs_written
 	num_tcs_output_cp = pipeline->shaders[MESA_SHADER_TESS_CTRL]->info.tcs.tcs_vertices_out; //TCS VERTICES OUT
@@ -2024,7 +2034,7 @@ radv_pipeline_init(struct radv_pipeline *pipeline,
 	if (loc->sgpr_idx != -1) {
 		pipeline->graphics.vtx_base_sgpr = radv_shader_stage_to_user_data_0(MESA_SHADER_VERTEX, device->physical_device->rad_info.chip_class, radv_pipeline_has_gs(pipeline), radv_pipeline_has_tess(pipeline));
 		pipeline->graphics.vtx_base_sgpr += loc->sgpr_idx * 4;
-		if (pipeline->shaders[MESA_SHADER_VERTEX]->info.info.vs.needs_draw_id)
+		if (radv_get_vertex_shader(pipeline)->info.info.vs.needs_draw_id)
 			pipeline->graphics.vtx_emit_num = 3;
 		else
 			pipeline->graphics.vtx_emit_num = 2;

src/amd/vulkan/radv_private.h

@@ -1129,6 +1129,8 @@ struct ac_userdata_info *radv_lookup_user_sgpr(struct radv_pipeline *pipeline,
 					       gl_shader_stage stage,
 					       int idx);
 
+struct radv_shader_variant *radv_get_vertex_shader(struct radv_pipeline *pipeline);
+
 struct radv_graphics_pipeline_create_info {
 	bool use_rectlist;
 	bool db_depth_clear;