71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
#pragma once
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/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2022 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*
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* @modified Tom Clay, 2026 - Adapted for ReXGlue runtime
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*/
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#include <cstdint>
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#include <optional>
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#include <rex/graphics/pipeline/shader/interpreter.h>
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#include <rex/graphics/pipeline/shader/shader.h>
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#include <rex/graphics/register_file.h>
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#include <rex/graphics/trace_writer.h>
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#include <rex/memory.h>
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namespace rex::graphics {
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class DrawExtentEstimator {
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public:
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DrawExtentEstimator(const RegisterFile& register_file, const memory::Memory& memory,
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TraceWriter* trace_writer)
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: register_file_(register_file),
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memory_(memory),
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trace_writer_(trace_writer),
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shader_interpreter_(register_file, memory) {
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shader_interpreter_.SetTraceWriter(trace_writer);
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}
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// The shader must have its ucode analyzed.
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uint32_t EstimateVertexMaxY(const Shader& vertex_shader);
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uint32_t EstimateMaxY(bool try_to_estimate_vertex_max_y, const Shader& vertex_shader);
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private:
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class PositionYExportSink : public ShaderInterpreter::ExportSink {
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public:
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void Export(ucode::ExportRegister export_register, const float* value,
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uint32_t value_mask) override;
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void Reset() {
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position_y_.reset();
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position_w_.reset();
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point_size_.reset();
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vertex_kill_.reset();
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}
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const std::optional<float>& position_y() const { return position_y_; }
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const std::optional<float>& position_w() const { return position_w_; }
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const std::optional<float>& point_size() const { return point_size_; }
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const std::optional<uint32_t>& vertex_kill() const { return vertex_kill_; }
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private:
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std::optional<float> position_y_;
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std::optional<float> position_w_;
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std::optional<float> point_size_;
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std::optional<uint32_t> vertex_kill_;
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};
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const RegisterFile& register_file_;
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const memory::Memory& memory_;
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TraceWriter* trace_writer_;
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ShaderInterpreter shader_interpreter_;
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};
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} // namespace rex::graphics
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