1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <array>
#include "common/assert.h"
#include "common/common_types.h"
#include "core/core.h"
#include "core/memory.h"
#include "video_core/renderer_opengl/gl_buffer_cache.h"
#include "video_core/renderer_opengl/gl_primitive_assembler.h"
namespace OpenGL {
constexpr u32 TRIANGLES_PER_QUAD = 6;
constexpr std::array<u32, TRIANGLES_PER_QUAD> QUAD_MAP = {0, 1, 2, 0, 2, 3};
PrimitiveAssembler::PrimitiveAssembler(OGLBufferCache& buffer_cache) : buffer_cache(buffer_cache) {}
PrimitiveAssembler::~PrimitiveAssembler() = default;
std::size_t PrimitiveAssembler::CalculateQuadSize(u32 count) const {
ASSERT_MSG(count % 4 == 0, "Quad count is expected to be a multiple of 4");
return (count / 4) * TRIANGLES_PER_QUAD * sizeof(GLuint);
}
GLintptr PrimitiveAssembler::MakeQuadArray(u32 first, u32 count) {
const std::size_t size{CalculateQuadSize(count)};
auto [dst_pointer, index_offset] = buffer_cache.ReserveMemory(size);
for (u32 primitive = 0; primitive < count / 4; ++primitive) {
for (u32 i = 0; i < TRIANGLES_PER_QUAD; ++i) {
const u32 index = first + primitive * 4 + QUAD_MAP[i];
std::memcpy(dst_pointer, &index, sizeof(index));
dst_pointer += sizeof(index);
}
}
return index_offset;
}
GLintptr PrimitiveAssembler::MakeQuadIndexed(Tegra::GPUVAddr gpu_addr, std::size_t index_size,
u32 count) {
const std::size_t map_size{CalculateQuadSize(count)};
auto [dst_pointer, index_offset] = buffer_cache.ReserveMemory(map_size);
auto& memory_manager = Core::System::GetInstance().GPU().MemoryManager();
const auto cpu_addr{memory_manager.GpuToCpuAddress(gpu_addr)};
ASSERT_MSG(cpu_addr, "Invalid GPU address");
const u8* source{Memory::GetPointer(*cpu_addr)};
for (u32 primitive = 0; primitive < count / 4; ++primitive) {
for (std::size_t i = 0; i < TRIANGLES_PER_QUAD; ++i) {
const u32 index = primitive * 4 + QUAD_MAP[i];
const u8* src_offset = source + (index * index_size);
std::memcpy(dst_pointer, src_offset, index_size);
dst_pointer += index_size;
}
}
return index_offset;
}
} // namespace OpenGL
|
