citra/src/video_core/vertex_loader.h

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#pragma once
#include <iterator>
#include <algorithm>
#include "video_core/pica.h"
#include "video_core/shader/shader.h"
namespace Pica {
class MemoryAccesses {
/// Combine overlapping and close ranges
void SimplifyRanges() {
for (auto it = ranges.begin(); it != ranges.end(); ++it) {
// NOTE: We add 32 to the range end address to make sure "close" ranges are combined, too
auto it2 = std::next(it);
while (it2 != ranges.end() && it->first + it->second + 32 >= it2->first) {
it->second = std::max(it->second, it2->first + it2->second - it->first);
it2 = ranges.erase(it2);
}
}
}
public:
/// Record a particular memory access in the list
void AddAccess(u32 paddr, u32 size) {
// Create new range or extend existing one
ranges[paddr] = std::max(ranges[paddr], size);
// Simplify ranges...
SimplifyRanges();
}
/// Map of accessed ranges (mapping start address to range size)
std::map<u32, u32> ranges;
};
class VertexLoader {
public:
void Setup(const Pica::Regs& regs);
void LoadVertex(u32 base_address, int index, int vertex, Shader::InputVertex& input, MemoryAccesses& memory_accesses);
int GetNumTotalAttributes() const { return num_total_attributes; }
private:
u32 vertex_attribute_sources[16];
u32 vertex_attribute_strides[16] = {};
Regs::VertexAttributeFormat vertex_attribute_formats[16] = {};
u32 vertex_attribute_elements[16] = {};
bool vertex_attribute_is_default[16];
int num_total_attributes;
};
} // namespace Pica