From: Marek Olšák <marek.ol...@amd.com>
We can finally do this, because the opcodes are scalar now.
---
src/gallium/drivers/radeonsi/si_shader.c | 56 ++++----------------------------
1 file changed, 7 insertions(+), 49 deletions(-)
diff --git a/src/gallium/drivers/radeonsi/si_shader.c
b/src/gallium/drivers/radeonsi/si_shader.c
index c150ae4..7844ebd 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -5067,70 +5067,28 @@ static void si_llvm_emit_ddxy(
* this takes an I,J coordinate pair,
* and works out the X and Y derivatives.
* it returns DDX(I), DDX(J), DDY(I), DDY(J).
*/
static LLVMValueRef si_llvm_emit_ddxy_interp(
struct lp_build_tgsi_context *bld_base,
LLVMValueRef interp_ij)
{
struct si_shader_context *ctx = si_shader_context(bld_base);
struct gallivm_state *gallivm = bld_base->base.gallivm;
- LLVMValueRef store_ptr, load_ptr_x, load_ptr_y, load_ptr_ddx,
load_ptr_ddy, temp, temp2;
- LLVMValueRef tl, tr, bl, result[4], thread_id;
- unsigned c;
-
- thread_id = get_thread_id(ctx);
- store_ptr = build_gep0(ctx, ctx->lds, thread_id);
-
- temp = LLVMBuildAnd(gallivm->builder, thread_id,
- lp_build_const_int32(gallivm, TID_MASK_LEFT), "");
-
- temp2 = LLVMBuildAnd(gallivm->builder, thread_id,
- lp_build_const_int32(gallivm, TID_MASK_TOP), "");
-
- load_ptr_x = build_gep0(ctx, ctx->lds, temp);
-
- load_ptr_y = build_gep0(ctx, ctx->lds, temp2);
-
- load_ptr_ddx = build_gep0(ctx, ctx->lds,
- LLVMBuildAdd(gallivm->builder, temp,
- lp_build_const_int32(gallivm,
1), ""));
-
- load_ptr_ddy = build_gep0(ctx, ctx->lds,
- LLVMBuildAdd(gallivm->builder, temp2,
- lp_build_const_int32(gallivm,
2), ""));
-
- for (c = 0; c < 2; ++c) {
- LLVMValueRef store_val;
- LLVMValueRef c_ll = lp_build_const_int32(gallivm, c);
-
- store_val = LLVMBuildExtractElement(gallivm->builder,
- interp_ij, c_ll, "");
- LLVMBuildStore(gallivm->builder,
- store_val,
- store_ptr);
-
- tl = LLVMBuildLoad(gallivm->builder, load_ptr_x, "");
- tl = LLVMBuildBitCast(gallivm->builder, tl, ctx->f32, "");
-
- tr = LLVMBuildLoad(gallivm->builder, load_ptr_ddx, "");
- tr = LLVMBuildBitCast(gallivm->builder, tr, ctx->f32, "");
-
- result[c] = LLVMBuildFSub(gallivm->builder, tr, tl, "");
-
- tl = LLVMBuildLoad(gallivm->builder, load_ptr_y, "");
- tl = LLVMBuildBitCast(gallivm->builder, tl, ctx->f32, "");
-
- bl = LLVMBuildLoad(gallivm->builder, load_ptr_ddy, "");
- bl = LLVMBuildBitCast(gallivm->builder, bl, ctx->f32, "");
+ LLVMValueRef result[4], a;
+ unsigned i;
- result[c + 2] = LLVMBuildFSub(gallivm->builder, bl, tl, "");
+ for (i = 0; i < 2; i++) {
+ a = LLVMBuildExtractElement(gallivm->builder, interp_ij,
+ LLVMConstInt(ctx->i32, i, 0), "");
+ result[i] = lp_build_emit_llvm_unary(bld_base, TGSI_OPCODE_DDX,
a);
+ result[2+i] = lp_build_emit_llvm_unary(bld_base,
TGSI_OPCODE_DDY, a);
}
return lp_build_gather_values(gallivm, result, 4);
}
static void interp_fetch_args(
struct lp_build_tgsi_context *bld_base,
struct lp_build_emit_data *emit_data)
{
struct si_shader_context *ctx = si_shader_context(bld_base);
--
2.7.4
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