51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
// Copyright 2014 Citra Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#pragma once
|
|
|
|
#include <functional>
|
|
#include "video_core/regs_pipeline.h"
|
|
|
|
namespace Pica {
|
|
|
|
/*
|
|
* Utility class to build triangles from a series of vertices,
|
|
* according to a given triangle topology.
|
|
*/
|
|
template <typename VertexType>
|
|
struct PrimitiveAssembler {
|
|
using TriangleHandler =
|
|
std::function<void(const VertexType& v0, const VertexType& v1, const VertexType& v2)>;
|
|
|
|
PrimitiveAssembler(
|
|
PipelineRegs::TriangleTopology topology = PipelineRegs::TriangleTopology::List);
|
|
|
|
/*
|
|
* Queues a vertex, builds primitives from the vertex queue according to the given
|
|
* triangle topology, and calls triangle_handler for each generated primitive.
|
|
* NOTE: We could specify the triangle handler in the constructor, but this way we can
|
|
* keep event and handler code next to each other.
|
|
*/
|
|
void SubmitVertex(const VertexType& vtx, TriangleHandler triangle_handler);
|
|
|
|
/**
|
|
* Resets the internal state of the PrimitiveAssembler.
|
|
*/
|
|
void Reset();
|
|
|
|
/**
|
|
* Reconfigures the PrimitiveAssembler to use a different triangle topology.
|
|
*/
|
|
void Reconfigure(PipelineRegs::TriangleTopology topology);
|
|
|
|
private:
|
|
PipelineRegs::TriangleTopology topology;
|
|
|
|
int buffer_index;
|
|
VertexType buffer[2];
|
|
bool strip_ready = false;
|
|
};
|
|
|
|
} // namespace
|