// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cstring>
#include "common/cityhash.h"
#include "shader_recompiler/shader_info.h"
#include "video_core/renderer_opengl/gl_graphics_program.h"
#include "video_core/renderer_opengl/gl_shader_manager.h"
#include "video_core/renderer_opengl/gl_state_tracker.h"
#include "video_core/texture_cache/texture_cache.h"
namespace OpenGL {
using Shader::ImageBufferDescriptor;
using Tegra::Texture::TexturePair;
using VideoCommon::ImageId;
constexpr u32 MAX_TEXTURES = 64;
constexpr u32 MAX_IMAGES = 8;
size_t GraphicsProgramKey::Hash() const noexcept {
return static_cast<size_t>(Common::CityHash64(reinterpret_cast<const char*>(this), Size()));
}
bool GraphicsProgramKey::operator==(const GraphicsProgramKey& rhs) const noexcept {
return std::memcmp(this, &rhs, Size()) == 0;
}
GraphicsProgram::GraphicsProgram(TextureCache& texture_cache_, BufferCache& buffer_cache_,
Tegra::MemoryManager& gpu_memory_,
Tegra::Engines::Maxwell3D& maxwell3d_,
ProgramManager& program_manager_, StateTracker& state_tracker_,
OGLProgram program_,
const std::array<const Shader::Info*, 5>& infos)
: texture_cache{texture_cache_}, buffer_cache{buffer_cache_},
gpu_memory{gpu_memory_}, maxwell3d{maxwell3d_}, program_manager{program_manager_},
state_tracker{state_tracker_}, program{std::move(program_)} {
std::ranges::transform(infos, stage_infos.begin(),
[](const Shader::Info* info) { return info ? *info : Shader::Info{}; });
u32 num_textures{};
u32 num_images{};
for (size_t stage = 0; stage < base_uniform_bindings.size() - 1; ++stage) {
const auto& info{stage_infos[stage]};
base_uniform_bindings[stage + 1] = base_uniform_bindings[stage];
base_storage_bindings[stage + 1] = base_storage_bindings[stage];
for (const auto& desc : info.constant_buffer_descriptors) {
base_uniform_bindings[stage + 1] += desc.count;
}
for (const auto& desc : info.storage_buffers_descriptors) {
base_storage_bindings[stage + 1] += desc.count;
}
for (const auto& desc : info.texture_buffer_descriptors) {
num_texture_buffers[stage] += desc.count;
num_textures += desc.count;
}
for (const auto& desc : info.image_buffer_descriptors) {
num_image_buffers[stage] += desc.count;
num_images += desc.count;
}
for (const auto& desc : info.texture_descriptors) {
num_textures += desc.count;
}
for (const auto& desc : info.image_descriptors) {
num_images += desc.count;
}
}
ASSERT(num_textures <= MAX_TEXTURES);
ASSERT(num_images <= MAX_IMAGES);
}
struct Spec {
static constexpr std::array<bool, 5> enabled_stages{true, true, true, true, true};
static constexpr bool has_storage_buffers = true;
static constexpr bool has_texture_buffers = true;
static constexpr bool has_image_buffers = true;
static constexpr bool has_images = true;
};
void GraphicsProgram::Configure(bool is_indexed) {
std::array<ImageId, MAX_TEXTURES + MAX_IMAGES> image_view_ids;
std::array<u32, MAX_TEXTURES + MAX_IMAGES> image_view_indices;
std::array<GLuint, MAX_TEXTURES> samplers;
size_t image_view_index{};
GLsizei sampler_binding{};
texture_cache.SynchronizeGraphicsDescriptors();
buffer_cache.runtime.SetBaseUniformBindings(base_uniform_bindings);
buffer_cache.runtime.SetBaseStorageBindings(base_storage_bindings);
const auto& regs{maxwell3d.regs};
const bool via_header_index{regs.sampler_index == Maxwell::SamplerIndex::ViaHeaderIndex};
const auto config_stage{[&](size_t stage) {
const Shader::Info& info{stage_infos[stage]};
buffer_cache.SetEnabledUniformBuffers(stage, info.constant_buffer_mask);
buffer_cache.UnbindGraphicsStorageBuffers(stage);
if constexpr (Spec::has_storage_buffers) {
size_t ssbo_index{};
for (const auto& desc : info.storage_buffers_descriptors) {
ASSERT(desc.count == 1);
buffer_cache.BindGraphicsStorageBuffer(stage, ssbo_index, desc.cbuf_index,
desc.cbuf_offset, desc.is_written);
++ssbo_index;
}
}
const auto& cbufs{maxwell3d.state.shader_stages[stage].const_buffers};
const auto read_handle{[&](const auto& desc, u32 index) {
ASSERT(cbufs[desc.cbuf_index].enabled);
const u32 index_offset{index << desc.size_shift};
const u32 offset{desc.cbuf_offset + index_offset};
const GPUVAddr addr{cbufs[desc.cbuf_index].address + offset};
if constexpr (std::is_same_v<decltype(desc), const Shader::TextureDescriptor&> ||
std::is_same_v<decltype(desc), const Shader::TextureBufferDescriptor&>) {
if (desc.has_secondary) {
ASSERT(cbufs[desc.secondary_cbuf_index].enabled);
const u32 second_offset{desc.secondary_cbuf_offset + index_offset};
const GPUVAddr separate_addr{cbufs[desc.secondary_cbuf_index].address +
second_offset};
const u32 lhs_raw{gpu_memory.Read<u32>(addr)};
const u32 rhs_raw{gpu_memory.Read<u32>(separate_addr)};
const u32 raw{lhs_raw | rhs_raw};
return TexturePair(raw, via_header_index);
}
}
return TexturePair(gpu_memory.Read<u32>(addr), via_header_index);
}};
const auto add_image{[&](const auto& desc) {
for (u32 index = 0; index < desc.count; ++index) {
const auto handle{read_handle(desc, index)};
image_view_indices[image_view_index++] = handle.first;
}
}};
if constexpr (Spec::has_texture_buffers) {
for (const auto& desc : info.texture_buffer_descriptors) {
for (u32 index = 0; index < desc.count; ++index) {
const auto handle{read_handle(desc, index)};
image_view_indices[image_view_index++] = handle.first;
samplers[sampler_binding++] = 0;
}
}
}
if constexpr (Spec::has_image_buffers) {
for (const auto& desc : info.image_buffer_descriptors) {
add_image(desc);
}
}
for (const auto& desc : info.texture_descriptors) {
for (u32 index = 0; index < desc.count; ++index) {
const auto handle{read_handle(desc, index)};
image_view_indices[image_view_index++] = handle.first;
Sampler* const sampler{texture_cache.GetGraphicsSampler(handle.second)};
samplers[sampler_binding++] = sampler->Handle();
}
}
if constexpr (Spec::has_images) {
for (const auto& desc : info.image_descriptors) {
add_image(desc);
}
}
}};
if constexpr (Spec::enabled_stages[0]) {
config_stage(0);
}
if constexpr (Spec::enabled_stages[1]) {
config_stage(1);
}
if constexpr (Spec::enabled_stages[2]) {
config_stage(2);
}
if constexpr (Spec::enabled_stages[3]) {
config_stage(3);
}
if constexpr (Spec::enabled_stages[4]) {
config_stage(4);
}
const std::span indices_span(image_view_indices.data(), image_view_index);
texture_cache.FillGraphicsImageViews(indices_span, image_view_ids);
ImageId* texture_buffer_index{image_view_ids.data()};
const auto bind_stage_info{[&](size_t stage) {
size_t index{};
const auto add_buffer{[&](const auto& desc) {
constexpr bool is_image = std::is_same_v<decltype(desc), const ImageBufferDescriptor&>;
for (u32 i = 0; i < desc.count; ++i) {
bool is_written{false};
if constexpr (is_image) {
is_written = desc.is_written;
}
ImageView& image_view{texture_cache.GetImageView(*texture_buffer_index)};
buffer_cache.BindGraphicsTextureBuffer(stage, index, image_view.GpuAddr(),
image_view.BufferSize(), image_view.format,
is_written, is_image);
++index;
++texture_buffer_index;
}
}};
const Shader::Info& info{stage_infos[stage]};
buffer_cache.UnbindGraphicsTextureBuffers(stage);
if constexpr (Spec::has_texture_buffers) {
for (const auto& desc : info.texture_buffer_descriptors) {
add_buffer(desc);
}
}
if constexpr (Spec::has_image_buffers) {
for (const auto& desc : info.image_buffer_descriptors) {
add_buffer(desc);
}
}
for (const auto& desc : info.texture_descriptors) {
texture_buffer_index += desc.count;
}
if constexpr (Spec::has_images) {
for (const auto& desc : info.image_descriptors) {
texture_buffer_index += desc.count;
}
}
}};
if constexpr (Spec::enabled_stages[0]) {
bind_stage_info(0);
}
if constexpr (Spec::enabled_stages[1]) {
bind_stage_info(1);
}
if constexpr (Spec::enabled_stages[2]) {
bind_stage_info(2);
}
if constexpr (Spec::enabled_stages[3]) {
bind_stage_info(3);
}
if constexpr (Spec::enabled_stages[4]) {
bind_stage_info(4);
}
buffer_cache.UpdateGraphicsBuffers(is_indexed);
buffer_cache.BindHostGeometryBuffers(is_indexed);
const ImageId* views_it{image_view_ids.data()};
GLsizei texture_binding = 0;
GLsizei image_binding = 0;
std::array<GLuint, MAX_TEXTURES> textures;
std::array<GLuint, MAX_IMAGES> images;
const auto prepare_stage{[&](size_t stage) {
buffer_cache.runtime.SetImagePointers(&textures[texture_binding], &images[image_binding]);
buffer_cache.BindHostStageBuffers(stage);
texture_binding += num_texture_buffers[stage];
image_binding += num_image_buffers[stage];
const auto& info{stage_infos[stage]};
for (const auto& desc : info.texture_descriptors) {
for (u32 index = 0; index < desc.count; ++index) {
ImageView& image_view{texture_cache.GetImageView(*(views_it++))};
textures[texture_binding++] = image_view.Handle(desc.type);
}
}
for (const auto& desc : info.image_descriptors) {
for (u32 index = 0; index < desc.count; ++index) {
ImageView& image_view{texture_cache.GetImageView(*(views_it++))};
images[image_binding++] = image_view.Handle(desc.type);
}
}
}};
if constexpr (Spec::enabled_stages[0]) {
prepare_stage(0);
}
if constexpr (Spec::enabled_stages[1]) {
prepare_stage(1);
}
if constexpr (Spec::enabled_stages[2]) {
prepare_stage(2);
}
if constexpr (Spec::enabled_stages[3]) {
prepare_stage(3);
}
if constexpr (Spec::enabled_stages[4]) {
prepare_stage(4);
}
if (texture_binding != 0) {
ASSERT(texture_binding == sampler_binding);
glBindTextures(0, texture_binding, textures.data());
glBindSamplers(0, sampler_binding, samplers.data());
}
if (image_binding != 0) {
glBindImageTextures(0, image_binding, images.data());
}
texture_cache.UpdateRenderTargets(false);
state_tracker.BindFramebuffer(texture_cache.GetFramebuffer()->Handle());
program_manager.BindProgram(program.handle);
}
} // namespace OpenGL
