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shader: Fix resolution scaling pass
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parent
fb924ea85c
commit
1672e9ba09
@ -221,6 +221,7 @@ add_library(shader_recompiler STATIC
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ir_opt/lower_fp16_to_fp32.cpp
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ir_opt/lower_int64_to_int32.cpp
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ir_opt/passes.h
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ir_opt/rescaling_pass.cpp
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ir_opt/ssa_rewrite_pass.cpp
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ir_opt/texture_pass.cpp
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ir_opt/verification_pass.cpp
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@ -430,6 +430,9 @@ void VisitUsages(Info& info, IR::Inst& inst) {
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case IR::Opcode::IsHelperInvocation:
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info.uses_is_helper_invocation = true;
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break;
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case IR::Opcode::ResolutionDownFactor:
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info.uses_rescaling_uniform = true;
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break;
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case IR::Opcode::LaneId:
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info.uses_subgroup_invocation_id = true;
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break;
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@ -19,6 +19,7 @@ void GlobalMemoryToStorageBufferPass(IR::Program& program);
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void IdentityRemovalPass(IR::Program& program);
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void LowerFp16ToFp32(IR::Program& program);
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void LowerInt64ToInt32(IR::Program& program);
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void RescalingPass(IR::Program& program);
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void SsaRewritePass(IR::Program& program);
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void TexturePass(Environment& env, IR::Program& program);
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void VerificationPass(const IR::Program& program);
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@ -3,7 +3,9 @@
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// Refer to the license.txt file included.
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#include "common/alignment.h"
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#include "common/settings.h"
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#include "shader_recompiler/environment.h"
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#include "shader_recompiler/frontend/ir/ir_emitter.h"
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#include "shader_recompiler/frontend/ir/modifiers.h"
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#include "shader_recompiler/frontend/ir/program.h"
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#include "shader_recompiler/frontend/ir/value.h"
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@ -12,59 +14,49 @@
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namespace Shader::Optimization {
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namespace {
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void PatchFragCoord(IR::Inst& inst) {
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void PatchFragCoord(IR::Block& block, IR::Inst& inst) {
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IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)};
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const IR::F32 inv_resolution_factor = IR::F32{Settings::values.resolution_info.down_factor};
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const IR::F32 new_get_attribute = ir.GetAttribute(inst.Arg(0).Attribute());
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const IR::F32 mul = ir.FMul(new_get_attribute, inv_resolution_factor);
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const IR::U1 should_rescale = IR::U1{true};
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const IR::F32 selection = ir.Select(should_rescale, mul, new_get_attribute);
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inst.ReplaceUsesWith(selection);
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const IR::F32 down_factor{ir.ResolutionDownFactor()};
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const IR::F32 frag_coord{&inst};
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const IR::F32 downscaled_frag_coord{ir.FPMul(frag_coord, down_factor)};
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inst.ReplaceUsesWith(downscaled_frag_coord);
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}
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void Visit(Info& info, IR::Inst& inst) {
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info.requires_rescaling_uniform = false;
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void Visit(const IR::Program& program, IR::Block& block, IR::Inst& inst) {
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const bool is_fragment_shader{program.stage == Stage::Fragment};
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switch (inst.GetOpcode()) {
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case IR::Opcode::GetAttribute: {
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conast auto attrib = inst.Arg(0).Attribute();
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const bool is_frag =
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attrib == IR::Attribute::PositionX || attrib == IR::Attribute::PositionY;
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const bool must_path = is_frag && program.stage == Stage::Fragment;
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if (must_path) {
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PatchFragCoord(inst);
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info.requires_rescaling_uniform = true;
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const IR::Attribute attr{inst.Arg(0).Attribute()};
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switch (attr) {
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case IR::Attribute::PositionX:
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case IR::Attribute::PositionY:
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if (is_fragment_shader) {
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PatchFragCoord(block, inst);
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}
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break;
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default:
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break;
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}
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break;
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}
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case IR::Opcode::ImageQueryDimensions: {
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info.requires_rescaling_uniform |= true;
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case IR::Opcode::ImageQueryDimensions:
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break;
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}
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case IR::Opcode::ImageFetch: {
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info.requires_rescaling_uniform |= true;
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case IR::Opcode::ImageFetch:
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break;
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}
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case IR::Opcode::ImageRead: {
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info.requires_rescaling_uniform |= true;
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case IR::Opcode::ImageRead:
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break;
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}
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case IR::Opcode::ImageWrite: {
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info.requires_rescaling_uniform |= true;
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case IR::Opcode::ImageWrite:
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break;
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}
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default:
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break;
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}
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}
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} // Anonymous namespace
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} // namespace
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void RescalingPass(Environment& env, IR::Program& program) {
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Info& info{program.info};
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void RescalingPass(IR::Program& program) {
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for (IR::Block* const block : program.post_order_blocks) {
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for (IR::Inst& inst : block->Instructions()) {
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Visit(info, inst);
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Visit(program, *block, inst);
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}
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}
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}
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@ -172,7 +172,7 @@ struct Info {
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bool uses_global_memory{};
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bool uses_atomic_image_u32{};
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bool uses_shadow_lod{};
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bool requires_rescaling_uniform{};
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bool uses_rescaling_uniform{};
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IR::Type used_constant_buffer_types{};
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IR::Type used_storage_buffer_types{};
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