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// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <array>
#include <cstddef>
#include <type_traits>
#include "common/common_types.h"
#include "core/core.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/gpu.h"
#include "video_core/renderer_opengl/gl_state_tracker.h"
#define OFF(field_name) MAXWELL3D_REG_INDEX(field_name)
#define NUM(field_name) (sizeof(Maxwell3D::Regs::field_name) / sizeof(u32))
namespace OpenGL {
namespace {
using namespace Dirty;
using namespace VideoCommon::Dirty;
using Tegra::Engines::Maxwell3D;
using Regs = Maxwell3D::Regs;
using Dirty = std::remove_reference_t<decltype(Maxwell3D::dirty)>;
using Tables = std::remove_reference_t<decltype(Maxwell3D::dirty.tables)>;
using Table = std::remove_reference_t<decltype(Maxwell3D::dirty.tables[0])>;
template <typename Integer>
void FillBlock(Table& table, std::size_t begin, std::size_t num, Integer dirty_index) {
const auto it = std::begin(table) + begin;
std::fill(it, it + num, static_cast<u8>(dirty_index));
}
template <typename Integer1, typename Integer2>
void FillBlock(Tables& tables, std::size_t begin, std::size_t num, Integer1 index_a,
Integer2 index_b) {
FillBlock(tables[0], begin, num, index_a);
FillBlock(tables[1], begin, num, index_b);
}
void SetupDirtyRenderTargets(Tables& tables) {
static constexpr std::size_t num_per_rt = NUM(rt[0]);
static constexpr std::size_t begin = OFF(rt);
static constexpr std::size_t num = num_per_rt * Regs::NumRenderTargets;
for (std::size_t rt = 0; rt < Regs::NumRenderTargets; ++rt) {
FillBlock(tables[0], begin + rt * num_per_rt, num_per_rt, ColorBuffer0 + rt);
}
FillBlock(tables[1], begin, num, RenderTargets);
static constexpr std::array zeta_flags{ZetaBuffer, RenderTargets};
for (std::size_t i = 0; i < std::size(zeta_flags); ++i) {
const u8 flag = zeta_flags[i];
auto& table = tables[i];
table[OFF(zeta_enable)] = flag;
table[OFF(zeta_width)] = flag;
table[OFF(zeta_height)] = flag;
FillBlock(table, OFF(zeta), NUM(zeta), flag);
}
}
void SetupDirtyColorMasks(Tables& tables) {
tables[0][OFF(color_mask_common)] = ColorMaskCommon;
for (std::size_t rt = 0; rt < Regs::NumRenderTargets; ++rt) {
const std::size_t offset = OFF(color_mask) + rt * NUM(color_mask[0]);
FillBlock(tables[0], offset, NUM(color_mask[0]), ColorMask0 + rt);
}
FillBlock(tables[1], OFF(color_mask), NUM(color_mask), ColorMasks);
}
void SetupDirtyVertexFormat(Tables& tables) {
for (std::size_t i = 0; i < Regs::NumVertexAttributes; ++i) {
const std::size_t offset = OFF(vertex_attrib_format) + i * NUM(vertex_attrib_format[0]);
FillBlock(tables[0], offset, NUM(vertex_attrib_format[0]), VertexFormat0 + i);
}
FillBlock(tables[1], OFF(vertex_attrib_format), Regs::NumVertexAttributes, VertexFormats);
}
void SetupDirtyViewports(Tables& tables) {
for (std::size_t i = 0; i < Regs::NumViewports; ++i) {
const std::size_t transf_offset = OFF(viewport_transform) + i * NUM(viewport_transform[0]);
const std::size_t viewport_offset = OFF(viewports) + i * NUM(viewports[0]);
FillBlock(tables[0], transf_offset, NUM(viewport_transform[0]), Viewport0 + i);
FillBlock(tables[0], viewport_offset, NUM(viewports[0]), Viewport0 + i);
}
FillBlock(tables[1], OFF(viewport_transform), NUM(viewport_transform), Viewports);
FillBlock(tables[1], OFF(viewports), NUM(viewports), Viewports);
tables[0][OFF(viewport_transform_enabled)] = ViewportTransform;
tables[1][OFF(viewport_transform_enabled)] = Viewports;
}
void SetupDirtyScissors(Tables& tables) {
for (std::size_t i = 0; i < Regs::NumViewports; ++i) {
const std::size_t offset = OFF(scissor_test) + i * NUM(scissor_test[0]);
FillBlock(tables[0], offset, NUM(scissor_test[0]), Scissor0 + i);
}
FillBlock(tables[1], OFF(scissor_test), NUM(scissor_test), Scissors);
}
} // Anonymous namespace
StateTracker::StateTracker(Core::System& system) : system{system} {}
void StateTracker::Initialize() {
auto& dirty = system.GPU().Maxwell3D().dirty;
std::size_t entry_index = 0;
const auto AddEntry = [&dirty, &entry_index](std::size_t dirty_register) {
dirty.on_write_stores[entry_index++] = static_cast<u8>(dirty_register);
};
AddEntry(RenderTargets);
for (std::size_t i = 0; i < Regs::NumRenderTargets; ++i) {
AddEntry(ColorBuffer0 + i);
}
AddEntry(ZetaBuffer);
auto& tables = dirty.tables;
SetupDirtyRenderTargets(tables);
SetupDirtyColorMasks(tables);
SetupDirtyViewports(tables);
SetupDirtyScissors(tables);
SetupDirtyVertexFormat(tables);
}
} // namespace OpenGL
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