// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <span>
#include "video_core/buffer_cache/buffer_cache.h"
#include "video_core/renderer_opengl/gl_buffer_cache.h"
#include "video_core/renderer_opengl/gl_device.h"
namespace OpenGL {
namespace {
struct BindlessSSBO {
GLuint64EXT address;
GLsizei length;
GLsizei padding;
};
static_assert(sizeof(BindlessSSBO) == sizeof(GLuint) * 4);
constexpr std::array PROGRAM_LUT{
GL_VERTEX_PROGRAM_NV, GL_TESS_CONTROL_PROGRAM_NV, GL_TESS_EVALUATION_PROGRAM_NV,
GL_GEOMETRY_PROGRAM_NV, GL_FRAGMENT_PROGRAM_NV,
};
} // Anonymous namespace
Buffer::Buffer(BufferCacheRuntime&, VideoCommon::NullBufferParams null_params)
: VideoCommon::BufferBase<VideoCore::RasterizerInterface>(null_params) {}
Buffer::Buffer(BufferCacheRuntime& runtime, VideoCore::RasterizerInterface& rasterizer_,
VAddr cpu_addr_, u64 size_bytes_)
: VideoCommon::BufferBase<VideoCore::RasterizerInterface>(rasterizer_, cpu_addr_, size_bytes_) {
buffer.Create();
const std::string name = fmt::format("Buffer 0x{:x}", CpuAddr());
glObjectLabel(GL_BUFFER, buffer.handle, static_cast<GLsizei>(name.size()), name.data());
glNamedBufferData(buffer.handle, SizeBytes(), nullptr, GL_DYNAMIC_DRAW);
if (runtime.has_unified_vertex_buffers) {
glGetNamedBufferParameterui64vNV(buffer.handle, GL_BUFFER_GPU_ADDRESS_NV, &address);
}
}
void Buffer::ImmediateUpload(size_t offset, std::span<const u8> data) noexcept {
glNamedBufferSubData(buffer.handle, static_cast<GLintptr>(offset),
static_cast<GLsizeiptr>(data.size_bytes()), data.data());
}
void Buffer::ImmediateDownload(size_t offset, std::span<u8> data) noexcept {
glGetNamedBufferSubData(buffer.handle, static_cast<GLintptr>(offset),
static_cast<GLsizeiptr>(data.size_bytes()), data.data());
}
void Buffer::MakeResident(GLenum access) noexcept {
// Abuse GLenum's order to exit early
// GL_NONE (default) < GL_READ_ONLY < GL_READ_WRITE
if (access <= current_residency_access || buffer.handle == 0) {
return;
}
if (std::exchange(current_residency_access, access) != GL_NONE) {
// If the buffer is already resident, remove its residency before promoting it
glMakeNamedBufferNonResidentNV(buffer.handle);
}
glMakeNamedBufferResidentNV(buffer.handle, access);
}
BufferCacheRuntime::BufferCacheRuntime(const Device& device_)
: device{device_}, has_fast_buffer_sub_data{device.HasFastBufferSubData()},
use_assembly_shaders{device.UseAssemblyShaders()},
has_unified_vertex_buffers{device.HasVertexBufferUnifiedMemory()},
stream_buffer{has_fast_buffer_sub_data ? std::nullopt : std::make_optional<StreamBuffer>()} {
GLint gl_max_attributes;
glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &gl_max_attributes);
max_attributes = static_cast<u32>(gl_max_attributes);
for (auto& stage_uniforms : fast_uniforms) {
for (OGLBuffer& buffer : stage_uniforms) {
buffer.Create();
glNamedBufferData(buffer.handle, BufferCache::DEFAULT_SKIP_CACHE_SIZE, nullptr,
GL_STREAM_DRAW);
}
}
for (auto& stage_uniforms : copy_uniforms) {
for (OGLBuffer& buffer : stage_uniforms) {
buffer.Create();
glNamedBufferData(buffer.handle, 0x10'000, nullptr, GL_STREAM_COPY);
}
}
for (OGLBuffer& buffer : copy_compute_uniforms) {
buffer.Create();
glNamedBufferData(buffer.handle, 0x10'000, nullptr, GL_STREAM_COPY);
}
}
void BufferCacheRuntime::CopyBuffer(Buffer& dst_buffer, Buffer& src_buffer,
std::span<const VideoCommon::BufferCopy> copies) {
for (const VideoCommon::BufferCopy& copy : copies) {
glCopyNamedBufferSubData(
src_buffer.Handle(), dst_buffer.Handle(), static_cast<GLintptr>(copy.src_offset),
static_cast<GLintptr>(copy.dst_offset), static_cast<GLsizeiptr>(copy.size));
}
}
void BufferCacheRuntime::BindIndexBuffer(Buffer& buffer, u32 offset, u32 size) {
if (has_unified_vertex_buffers) {
buffer.MakeResident(GL_READ_ONLY);
glBufferAddressRangeNV(GL_ELEMENT_ARRAY_ADDRESS_NV, 0, buffer.HostGpuAddr() + offset,
static_cast<GLsizeiptr>(size));
} else {
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer.Handle());
index_buffer_offset = offset;
}
}
void BufferCacheRuntime::BindVertexBuffer(u32 index, Buffer& buffer, u32 offset, u32 size,
u32 stride) {
if (index >= max_attributes) {
return;
}
if (has_unified_vertex_buffers) {
buffer.MakeResident(GL_READ_ONLY);
glBindVertexBuffer(index, 0, 0, static_cast<GLsizei>(stride));
glBufferAddressRangeNV(GL_VERTEX_ATTRIB_ARRAY_ADDRESS_NV, index,
buffer.HostGpuAddr() + offset, static_cast<GLsizeiptr>(size));
} else {
glBindVertexBuffer(index, buffer.Handle(), static_cast<GLintptr>(offset),
static_cast<GLsizei>(stride));
}
}
void BufferCacheRuntime::BindUniformBuffer(size_t stage, u32 binding_index, Buffer& buffer,
u32 offset, u32 size) {
if (use_assembly_shaders) {
GLuint handle;
if (offset != 0) {
handle = copy_uniforms[stage][binding_index].handle;
glCopyNamedBufferSubData(buffer.Handle(), handle, offset, 0, size);
} else {
handle = buffer.Handle();
}
glBindBufferRangeNV(PABO_LUT[stage], binding_index, handle, 0,
static_cast<GLsizeiptr>(size));
} else {
const GLuint base_binding = device.GetBaseBindings(stage).uniform_buffer;
const GLuint binding = base_binding + binding_index;
glBindBufferRange(GL_UNIFORM_BUFFER, binding, buffer.Handle(),
static_cast<GLintptr>(offset), static_cast<GLsizeiptr>(size));
}
}
void BufferCacheRuntime::BindComputeUniformBuffer(u32 binding_index, Buffer& buffer, u32 offset,
u32 size) {
if (use_assembly_shaders) {
GLuint handle;
if (offset != 0) {
handle = copy_compute_uniforms[binding_index].handle;
glCopyNamedBufferSubData(buffer.Handle(), handle, offset, 0, size);
} else {
handle = buffer.Handle();
}
glBindBufferRangeNV(GL_COMPUTE_PROGRAM_PARAMETER_BUFFER_NV, binding_index, handle, 0,
static_cast<GLsizeiptr>(size));
} else {
glBindBufferRange(GL_UNIFORM_BUFFER, binding_index, buffer.Handle(),
static_cast<GLintptr>(offset), static_cast<GLsizeiptr>(size));
}
}
void BufferCacheRuntime::BindStorageBuffer(size_t stage, u32 binding_index, Buffer& buffer,
u32 offset, u32 size, bool is_written) {
if (use_assembly_shaders) {
const BindlessSSBO ssbo{
.address = buffer.HostGpuAddr() + offset,
.length = static_cast<GLsizei>(size),
.padding = 0,
};
buffer.MakeResident(is_written ? GL_READ_WRITE : GL_READ_ONLY);
glProgramLocalParametersI4uivNV(PROGRAM_LUT[stage], binding_index, 1,
reinterpret_cast<const GLuint*>(&ssbo));
} else {
const GLuint base_binding = device.GetBaseBindings(stage).shader_storage_buffer;
const GLuint binding = base_binding + binding_index;
glBindBufferRange(GL_SHADER_STORAGE_BUFFER, binding, buffer.Handle(),
static_cast<GLintptr>(offset), static_cast<GLsizeiptr>(size));
}
}
void BufferCacheRuntime::BindComputeStorageBuffer(u32 binding_index, Buffer& buffer, u32 offset,
u32 size, bool is_written) {
if (use_assembly_shaders) {
const BindlessSSBO ssbo{
.address = buffer.HostGpuAddr() + offset,
.length = static_cast<GLsizei>(size),
.padding = 0,
};
buffer.MakeResident(is_written ? GL_READ_WRITE : GL_READ_ONLY);
glProgramLocalParametersI4uivNV(GL_COMPUTE_PROGRAM_NV, binding_index, 1,
reinterpret_cast<const GLuint*>(&ssbo));
} else if (size == 0) {
glBindBufferRange(GL_SHADER_STORAGE_BUFFER, binding_index, 0, 0, 0);
} else {
glBindBufferRange(GL_SHADER_STORAGE_BUFFER, binding_index, buffer.Handle(),
static_cast<GLintptr>(offset), static_cast<GLsizeiptr>(size));
}
}
void BufferCacheRuntime::BindTransformFeedbackBuffer(u32 index, Buffer& buffer, u32 offset,
u32 size) {
glBindBufferRange(GL_TRANSFORM_FEEDBACK_BUFFER, index, buffer.Handle(),
static_cast<GLintptr>(offset), static_cast<GLsizeiptr>(size));
}
} // namespace OpenGL
