From 73cb17f41bf019df504d2d2af4ebdf45aa3201c6 Mon Sep 17 00:00:00 2001
From: FernandoS27 <fsahmkow27@gmail.com>
Date: Sun, 4 Apr 2021 09:38:15 +0200
Subject: shader: Implement indexed Position and ClipDistances
---
.../backend/spirv/emit_context.cpp | 40 ++++++++++++++++++++++
1 file changed, 40 insertions(+)
(limited to 'src/shader_recompiler/backend/spirv/emit_context.cpp')
diff --git a/src/shader_recompiler/backend/spirv/emit_context.cpp b/src/shader_recompiler/backend/spirv/emit_context.cpp
index eadecb0641..e22bb5371e 100644
--- a/src/shader_recompiler/backend/spirv/emit_context.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_context.cpp
@@ -327,6 +327,10 @@ void EmitContext::DefineAttributeMemAccess(const Info& info) {
const Id compare_index{OpShiftRightLogical(U32[1], base_index, Constant(U32[1], 2U))};
std::vector<Sirit::Literal> literals;
std::vector<Id> labels;
+ if (info.loads_position) {
+ literals.push_back(static_cast<u32>(IR::Attribute::PositionX) >> 2);
+ labels.push_back(OpLabel());
+ }
const u32 base_attribute_value = static_cast<u32>(IR::Attribute::Generic0X) >> 2;
for (u32 i = 0; i < info.input_generics.size(); i++) {
if (!info.input_generics[i].used) {
@@ -340,6 +344,12 @@ void EmitContext::DefineAttributeMemAccess(const Info& info) {
AddLabel(default_label);
OpReturnValue(Constant(F32[1], 0.0f));
size_t label_index = 0;
+ if (info.loads_position) {
+ AddLabel(labels[label_index]);
+ const Id result{OpLoad(F32[1], OpAccessChain(input_f32, input_position, masked_index))};
+ OpReturnValue(result);
+ label_index++;
+ }
for (u32 i = 0; i < info.input_generics.size(); i++) {
if (!info.input_generics[i].used) {
continue;
@@ -377,6 +387,10 @@ void EmitContext::DefineAttributeMemAccess(const Info& info) {
const Id compare_index{OpShiftRightLogical(U32[1], base_index, Constant(U32[1], 2U))};
std::vector<Sirit::Literal> literals;
std::vector<Id> labels;
+ if (info.stores_position) {
+ literals.push_back(static_cast<u32>(IR::Attribute::PositionX) >> 2);
+ labels.push_back(OpLabel());
+ }
const u32 base_attribute_value = static_cast<u32>(IR::Attribute::Generic0X) >> 2;
for (u32 i = 0; i < info.stores_generics.size(); i++) {
if (!info.stores_generics[i]) {
@@ -385,11 +399,24 @@ void EmitContext::DefineAttributeMemAccess(const Info& info) {
literals.push_back(base_attribute_value + i);
labels.push_back(OpLabel());
}
+ if (info.stores_clip_distance) {
+ literals.push_back(static_cast<u32>(IR::Attribute::ClipDistance0) >> 2);
+ labels.push_back(OpLabel());
+ literals.push_back(static_cast<u32>(IR::Attribute::ClipDistance4) >> 2);
+ labels.push_back(OpLabel());
+ }
OpSelectionMerge(end_block, spv::SelectionControlMask::MaskNone);
OpSwitch(compare_index, default_label, literals, labels);
AddLabel(default_label);
OpReturn();
size_t label_index = 0;
+ if (info.stores_position) {
+ AddLabel(labels[label_index]);
+ const Id pointer{OpAccessChain(output_f32, output_position, masked_index)};
+ OpStore(pointer, store_value);
+ OpReturn();
+ label_index++;
+ }
for (u32 i = 0; i < info.stores_generics.size(); i++) {
if (!info.stores_generics[i]) {
continue;
@@ -401,6 +428,19 @@ void EmitContext::DefineAttributeMemAccess(const Info& info) {
OpReturn();
label_index++;
}
+ if (info.stores_clip_distance) {
+ AddLabel(labels[label_index]);
+ const Id pointer{OpAccessChain(output_f32, clip_distances, masked_index)};
+ OpStore(pointer, store_value);
+ OpReturn();
+ label_index++;
+ AddLabel(labels[label_index]);
+ const Id fixed_index{OpIAdd(U32[1], masked_index, Constant(U32[1], 4))};
+ const Id pointer2{OpAccessChain(output_f32, clip_distances, fixed_index)};
+ OpStore(pointer2, store_value);
+ OpReturn();
+ label_index++;
+ }
AddLabel(end_block);
OpUnreachable();
OpFunctionEnd();
--
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