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rescaling_pass: Logic simplification and minor style cleanup
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@ -183,7 +183,6 @@ IR::Program TranslateProgram(ObjectPool<IR::Inst>& inst_pool, ObjectPool<IR::Blo
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if (Settings::values.resolution_info.active) {
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Optimization::RescalingPass(program);
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}
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Optimization::DeadCodeEliminationPass(program);
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if (Settings::values.renderer_debug) {
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Optimization::VerificationPass(program);
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@ -14,11 +14,7 @@
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namespace Shader::Optimization {
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namespace {
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void VisitMark(const IR::Program& program, const IR::Inst& inst) {
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const bool is_fragment_shader{program.stage == Stage::Fragment};
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if (!is_fragment_shader) {
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return;
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}
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void VisitMark(const IR::Inst& inst) {
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switch (inst.GetOpcode()) {
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case IR::Opcode::ShuffleIndex:
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case IR::Opcode::ShuffleUp:
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@ -54,6 +50,7 @@ void VisitMark(const IR::Program& program, const IR::Inst& inst) {
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break;
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}
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}
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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 down_factor{ir.ResolutionDownFactor()};
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@ -64,50 +61,35 @@ void PatchFragCoord(IR::Block& block, IR::Inst& inst) {
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[[nodiscard]] IR::U32 Scale(IR::IREmitter& ir, const IR::U1& is_scaled, const IR::U32& value) {
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IR::U32 scaled_value{value};
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bool changed{};
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if (const u32 up_scale = Settings::values.resolution_info.up_scale; up_scale != 1) {
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scaled_value = ir.IMul(scaled_value, ir.Imm32(up_scale));
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changed = true;
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}
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if (const u32 down_shift = Settings::values.resolution_info.down_shift; down_shift != 0) {
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scaled_value = ir.ShiftRightArithmetic(scaled_value, ir.Imm32(down_shift));
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changed = true;
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}
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if (changed) {
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return IR::U32{ir.Select(is_scaled, scaled_value, value)};
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} else {
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return value;
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}
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}
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[[nodiscard]] IR::U32 SubScale(IR::IREmitter& ir, const IR::U1& is_scaled, const IR::U32& value,
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const IR::Attribute attrib) {
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const IR::F32 opt1{ir.Imm32(Settings::values.resolution_info.up_factor)};
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const IR::F32 base{ir.FPMul(ir.ConvertUToF(32, 32, value), opt1)};
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const IR::F32 up_factor{ir.Imm32(Settings::values.resolution_info.up_factor)};
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const IR::F32 base{ir.FPMul(ir.ConvertUToF(32, 32, value), up_factor)};
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const IR::F32 frag_coord{ir.GetAttribute(attrib)};
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const IR::F32 opt2{ir.Imm32(Settings::values.resolution_info.down_factor)};
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const IR::F32 floor{ir.FPMul(opt1, ir.FPFloor(ir.FPMul(frag_coord, opt2)))};
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const IR::U32 deviation{
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ir.ConvertFToU(32, ir.FPAdd(base, ir.FPAdd(frag_coord, ir.FPNeg(floor))))};
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return IR::U32{ir.Select(is_scaled, deviation, value)};
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const IR::F32 down_factor{ir.Imm32(Settings::values.resolution_info.down_factor)};
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const IR::F32 floor{ir.FPMul(up_factor, ir.FPFloor(ir.FPMul(frag_coord, down_factor)))};
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const IR::F16F32F64 deviation{ir.FPAdd(base, ir.FPAdd(frag_coord, ir.FPNeg(floor)))};
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return IR::U32{ir.Select(is_scaled, ir.ConvertFToU(32, deviation), value)};
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}
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[[nodiscard]] IR::U32 DownScale(IR::IREmitter& ir, const IR::U1& is_scaled, IR::U32 value) {
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[[nodiscard]] IR::U32 DownScale(IR::IREmitter& ir, const IR::U1& is_scaled, const IR::U32& value) {
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IR::U32 scaled_value{value};
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bool changed{};
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if (const u32 down_shift = Settings::values.resolution_info.down_shift; down_shift != 0) {
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scaled_value = ir.ShiftLeftLogical(scaled_value, ir.Imm32(down_shift));
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changed = true;
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}
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if (const u32 up_scale = Settings::values.resolution_info.up_scale; up_scale != 1) {
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scaled_value = ir.IDiv(scaled_value, ir.Imm32(up_scale));
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changed = true;
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}
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if (changed) {
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return IR::U32{ir.Select(is_scaled, scaled_value, value)};
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} else {
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return value;
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}
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}
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void PatchImageQueryDimensions(IR::Block& block, IR::Inst& inst) {
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@ -267,9 +249,12 @@ void Visit(const IR::Program& program, IR::Block& block, IR::Inst& inst) {
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} // Anonymous namespace
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void RescalingPass(IR::Program& program) {
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const bool is_fragment_shader{program.stage == Stage::Fragment};
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if (is_fragment_shader) {
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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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VisitMark(program, inst);
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VisitMark(inst);
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}
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}
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}
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for (IR::Block* const block : program.post_order_blocks) {
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