radeonsi: extract si_build_tcs_epilog_function

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c
index 628b8c3..b33f54a 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -7716,6 +7716,51 @@ static bool si_shader_select_tes_parts(struct si_screen *sscreen,
 }
 
 /**
+ * Compile the TCS epilog function. This writes tesselation factors to memory
+ * based on the output primitive type of the tesselator (determined by TES).
+ */
+static void si_build_tcs_epilog_function(struct si_shader_context *ctx,
+                                        union si_shader_part_key *key)
+{
+       struct gallivm_state *gallivm = &ctx->gallivm;
+       struct lp_build_tgsi_context *bld_base = &ctx->soa.bld_base;
+       LLVMTypeRef params[16];
+       LLVMValueRef func;
+       int last_sgpr, num_params;
+
+       /* Declare inputs. Only RW_BUFFERS and TESS_FACTOR_OFFSET are used. */
+       params[SI_PARAM_RW_BUFFERS] = const_array(ctx->v16i8, SI_NUM_RW_BUFFERS);
+       params[SI_PARAM_CONST_BUFFERS] = ctx->i64;
+       params[SI_PARAM_SAMPLERS] = ctx->i64;
+       params[SI_PARAM_IMAGES] = ctx->i64;
+       params[SI_PARAM_SHADER_BUFFERS] = ctx->i64;
+       params[SI_PARAM_TCS_OFFCHIP_LAYOUT] = ctx->i32;
+       params[SI_PARAM_TCS_OUT_OFFSETS] = ctx->i32;
+       params[SI_PARAM_TCS_OUT_LAYOUT] = ctx->i32;
+       params[SI_PARAM_TCS_IN_LAYOUT] = ctx->i32;
+       params[ctx->param_oc_lds = SI_PARAM_TCS_OC_LDS] = ctx->i32;
+       params[SI_PARAM_TESS_FACTOR_OFFSET] = ctx->i32;
+       last_sgpr = SI_PARAM_TESS_FACTOR_OFFSET;
+       num_params = last_sgpr + 1;
+
+       params[num_params++] = ctx->i32; /* patch index within the wave (REL_PATCH_ID) */
+       params[num_params++] = ctx->i32; /* invocation ID within the patch */
+       params[num_params++] = ctx->i32; /* LDS offset where tess factors should be loaded from */
+
+       /* Create the function. */
+       si_create_function(ctx, "tcs_epilog", NULL, 0, params, num_params, last_sgpr);
+       declare_tess_lds(ctx);
+       func = ctx->main_fn;
+
+       si_write_tess_factors(bld_base,
+                             LLVMGetParam(func, last_sgpr + 1),
+                             LLVMGetParam(func, last_sgpr + 2),
+                             LLVMGetParam(func, last_sgpr + 3));
+
+       LLVMBuildRetVoid(gallivm->builder);
+}
+
+/**
  * Compile the TCS epilog. This writes tesselation factors to memory based on
  * the output primitive type of the tesselator (determined by TES).
  */
@@ -7728,47 +7773,15 @@ static bool si_compile_tcs_epilog(struct si_screen *sscreen,
        struct si_shader shader = {};
        struct si_shader_context ctx;
        struct gallivm_state *gallivm = &ctx.gallivm;
-       struct lp_build_tgsi_context *bld_base = &ctx.soa.bld_base;
-       LLVMTypeRef params[16];
-       LLVMValueRef func;
-       int last_sgpr, num_params;
        bool status = true;
 
        si_init_shader_ctx(&ctx, sscreen, &shader, tm);
        ctx.type = PIPE_SHADER_TESS_CTRL;
        shader.key.tcs.epilog = key->tcs_epilog.states;
 
-       /* Declare inputs. Only RW_BUFFERS and TESS_FACTOR_OFFSET are used. */
-       params[SI_PARAM_RW_BUFFERS] = const_array(ctx.v16i8, SI_NUM_RW_BUFFERS);
-       params[SI_PARAM_CONST_BUFFERS] = ctx.i64;
-       params[SI_PARAM_SAMPLERS] = ctx.i64;
-       params[SI_PARAM_IMAGES] = ctx.i64;
-       params[SI_PARAM_SHADER_BUFFERS] = ctx.i64;
-       params[SI_PARAM_TCS_OFFCHIP_LAYOUT] = ctx.i32;
-       params[SI_PARAM_TCS_OUT_OFFSETS] = ctx.i32;
-       params[SI_PARAM_TCS_OUT_LAYOUT] = ctx.i32;
-       params[SI_PARAM_TCS_IN_LAYOUT] = ctx.i32;
-       params[ctx.param_oc_lds = SI_PARAM_TCS_OC_LDS] = ctx.i32;
-       params[SI_PARAM_TESS_FACTOR_OFFSET] = ctx.i32;
-       last_sgpr = SI_PARAM_TESS_FACTOR_OFFSET;
-       num_params = last_sgpr + 1;
-
-       params[num_params++] = ctx.i32; /* patch index within the wave (REL_PATCH_ID) */
-       params[num_params++] = ctx.i32; /* invocation ID within the patch */
-       params[num_params++] = ctx.i32; /* LDS offset where tess factors should be loaded from */
-
-       /* Create the function. */
-       si_create_function(&ctx, "tcs_epilog", NULL, 0, params, num_params, last_sgpr);
-       declare_tess_lds(&ctx);
-       func = ctx.main_fn;
-
-       si_write_tess_factors(bld_base,
-                             LLVMGetParam(func, last_sgpr + 1),
-                             LLVMGetParam(func, last_sgpr + 2),
-                             LLVMGetParam(func, last_sgpr + 3));
+       si_build_tcs_epilog_function(&ctx, key);
 
        /* Compile. */
-       LLVMBuildRetVoid(gallivm->builder);
        si_llvm_finalize_module(&ctx,
                r600_extra_shader_checks(&sscreen->b, PIPE_SHADER_TESS_CTRL));