mirror of https://git.h3cjp.net/H3cJP/citra.git
64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
// Copyright 2023 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include "common/bit_set.h"
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#include "video_core/pica/regs_shader.h"
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#include "video_core/pica/shader_unit.h"
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namespace Pica {
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ShaderUnit::ShaderUnit(GeometryEmitter* emitter) : emitter_ptr{emitter} {}
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ShaderUnit::~ShaderUnit() = default;
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void ShaderUnit::LoadInput(const ShaderRegs& config, const AttributeBuffer& buffer) {
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const u32 max_attribute = config.max_input_attribute_index;
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for (u32 attr = 0; attr <= max_attribute; ++attr) {
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const u32 reg = config.GetRegisterForAttribute(attr);
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input[reg] = buffer[attr];
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}
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}
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void ShaderUnit::WriteOutput(const ShaderRegs& config, AttributeBuffer& buffer) {
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u32 output_index{};
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for (u32 reg : Common::BitSet<u32>(config.output_mask)) {
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buffer[output_index++] = output[reg];
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}
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}
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void GeometryEmitter::Emit(std::span<Common::Vec4<f24>, 16> output_regs) {
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ASSERT(vertex_id < 3);
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u32 output_index{};
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for (u32 reg : Common::BitSet<u32>(output_mask)) {
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buffer[vertex_id][output_index++] = output_regs[reg];
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}
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if (prim_emit) {
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if (winding) {
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handlers->winding_setter();
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}
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for (std::size_t i = 0; i < buffer.size(); ++i) {
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handlers->vertex_handler(buffer[i]);
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}
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}
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}
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GeometryShaderUnit::GeometryShaderUnit() : ShaderUnit{&emitter} {}
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GeometryShaderUnit::~GeometryShaderUnit() = default;
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void GeometryShaderUnit::SetVertexHandlers(VertexHandler vertex_handler,
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WindingSetter winding_setter) {
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emitter.handlers = new Handlers;
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emitter.handlers->vertex_handler = vertex_handler;
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emitter.handlers->winding_setter = winding_setter;
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}
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void GeometryShaderUnit::ConfigOutput(const ShaderRegs& config) {
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emitter.output_mask = config.output_mask;
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}
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} // namespace Pica
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