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Update the stream_buffer helper from Citra.

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Please see https://github.com/citra-emu/citra/pull/3666 for more details.
This commit is contained in:
Markus Wick 2018-08-09 21:31:46 +02:00
parent 5926fbd3d7
commit d7298ec262
4 changed files with 111 additions and 197 deletions
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36
src/video_core/renderer_opengl/gl_rasterizer.cpp
View file

@ -36,7 +36,8 @@ MICROPROFILE_DEFINE(OpenGL_Drawing, "OpenGL", "Drawing", MP_RGB(128, 128, 192));
MICROPROFILE_DEFINE(OpenGL_Blits, "OpenGL", "Blits", MP_RGB(100, 100, 255));
MICROPROFILE_DEFINE(OpenGL_CacheManagement, "OpenGL", "Cache Mgmt", MP_RGB(100, 255, 100));
RasterizerOpenGL::RasterizerOpenGL(Core::Frontend::EmuWindow& window) : emu_window{window} {
RasterizerOpenGL::RasterizerOpenGL(Core::Frontend::EmuWindow& window)
: emu_window{window}, stream_buffer(GL_ARRAY_BUFFER, STREAM_BUFFER_SIZE) {
// Create sampler objects
for (size_t i = 0; i < texture_samplers.size(); ++i) {
texture_samplers[i].Create();
@ -57,9 +58,7 @@ RasterizerOpenGL::RasterizerOpenGL(Core::Frontend::EmuWindow& window) : emu_wind
const std::string_view extension{
reinterpret_cast<const char*>(glGetStringi(GL_EXTENSIONS, i))};
if (extension == "GL_ARB_buffer_storage") {
has_ARB_buffer_storage = true;
} else if (extension == "GL_ARB_direct_state_access") {
if (extension == "GL_ARB_direct_state_access") {
has_ARB_direct_state_access = true;
} else if (extension == "GL_ARB_separate_shader_objects") {
has_ARB_separate_shader_objects = true;
@ -86,16 +85,14 @@ RasterizerOpenGL::RasterizerOpenGL(Core::Frontend::EmuWindow& window) : emu_wind
hw_vao.Create();
stream_buffer = OGLStreamBuffer::MakeBuffer(has_ARB_buffer_storage, GL_ARRAY_BUFFER);
stream_buffer->Create(STREAM_BUFFER_SIZE, STREAM_BUFFER_SIZE / 2);
state.draw.vertex_buffer = stream_buffer->GetHandle();
state.draw.vertex_buffer = stream_buffer.GetHandle();
shader_program_manager = std::make_unique<GLShader::ProgramManager>();
state.draw.shader_program = 0;
state.draw.vertex_array = hw_vao.handle;
state.Apply();
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, stream_buffer->GetHandle());
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, stream_buffer.GetHandle());
for (unsigned index = 0; index < uniform_buffers.size(); ++index) {
auto& buffer = uniform_buffers[index];
@ -111,13 +108,7 @@ RasterizerOpenGL::RasterizerOpenGL(Core::Frontend::EmuWindow& window) : emu_wind
LOG_CRITICAL(Render_OpenGL, "Sync fixed function OpenGL state here!");
}
RasterizerOpenGL::~RasterizerOpenGL() {
if (stream_buffer != nullptr) {
state.draw.vertex_buffer = stream_buffer->GetHandle();
state.Apply();
stream_buffer->Release();
}
}
RasterizerOpenGL::~RasterizerOpenGL() {}
std::pair<u8*, GLintptr> RasterizerOpenGL::SetupVertexArrays(u8* array_ptr,
GLintptr buffer_offset) {
@ -126,7 +117,7 @@ std::pair<u8*, GLintptr> RasterizerOpenGL::SetupVertexArrays(u8* array_ptr,
const auto& memory_manager = Core::System::GetInstance().GPU().memory_manager;
state.draw.vertex_array = hw_vao.handle;
state.draw.vertex_buffer = stream_buffer->GetHandle();
state.draw.vertex_buffer = stream_buffer.GetHandle();
state.Apply();
// Upload all guest vertex arrays sequentially to our buffer
@ -145,7 +136,7 @@ std::pair<u8*, GLintptr> RasterizerOpenGL::SetupVertexArrays(u8* array_ptr,
Memory::ReadBlock(*memory_manager->GpuToCpuAddress(start), array_ptr, size);
// Bind the vertex array to the buffer at the current offset.
glBindVertexBuffer(index, stream_buffer->GetHandle(), buffer_offset, vertex_array.stride);
glBindVertexBuffer(index, stream_buffer.GetHandle(), buffer_offset, vertex_array.stride);
ASSERT_MSG(vertex_array.divisor == 0, "Vertex buffer divisor unimplemented");
@ -205,7 +196,7 @@ void RasterizerOpenGL::SetupShaders(u8* buffer_ptr, GLintptr buffer_offset) {
// Helper function for uploading uniform data
const auto copy_buffer = [&](GLuint handle, GLintptr offset, GLsizeiptr size) {
if (has_ARB_direct_state_access) {
glCopyNamedBufferSubData(stream_buffer->GetHandle(), handle, offset, 0, size);
glCopyNamedBufferSubData(stream_buffer.GetHandle(), handle, offset, 0, size);
} else {
glBindBuffer(GL_COPY_WRITE_BUFFER, handle);
glCopyBufferSubData(GL_ARRAY_BUFFER, GL_COPY_WRITE_BUFFER, offset, 0, size);
@ -456,7 +447,7 @@ void RasterizerOpenGL::DrawArrays() {
const u64 index_buffer_size{regs.index_array.count * regs.index_array.FormatSizeInBytes()};
const unsigned vertex_num{is_indexed ? regs.index_array.count : regs.vertex_buffer.count};
state.draw.vertex_buffer = stream_buffer->GetHandle();
state.draw.vertex_buffer = stream_buffer.GetHandle();
state.Apply();
size_t buffer_size = CalculateVertexArraysSize();
@ -471,8 +462,8 @@ void RasterizerOpenGL::DrawArrays() {
u8* buffer_ptr;
GLintptr buffer_offset;
std::tie(buffer_ptr, buffer_offset) =
stream_buffer->Map(static_cast<GLsizeiptr>(buffer_size), 4);
std::tie(buffer_ptr, buffer_offset, std::ignore) =
stream_buffer.Map(static_cast<GLsizeiptr>(buffer_size), 4);
u8* offseted_buffer;
std::tie(offseted_buffer, buffer_offset) = SetupVertexArrays(buffer_ptr, buffer_offset);
@ -500,7 +491,8 @@ void RasterizerOpenGL::DrawArrays() {
SetupShaders(offseted_buffer, buffer_offset);
stream_buffer->Unmap();
// TODO: Don't use buffer_size here, use the updated buffer_offset.
stream_buffer.Unmap(buffer_size);
shader_program_manager->ApplyTo(state);
state.Apply();

3
src/video_core/renderer_opengl/gl_rasterizer.h
View file

@ -139,7 +139,6 @@ private:
/// Syncs the blend state to match the guest state
void SyncBlendState();
bool has_ARB_buffer_storage = false;
bool has_ARB_direct_state_access = false;
bool has_ARB_separate_shader_objects = false;
bool has_ARB_vertex_attrib_binding = false;
@ -160,7 +159,7 @@ private:
ssbos;
static constexpr size_t STREAM_BUFFER_SIZE = 128 * 1024 * 1024;
std::unique_ptr<OGLStreamBuffer> stream_buffer;
OGLStreamBuffer stream_buffer;
OGLBuffer uniform_buffer;
OGLFramebuffer framebuffer;

227
src/video_core/renderer_opengl/gl_stream_buffer.cpp
View file

@ -9,174 +9,91 @@
#include "video_core/renderer_opengl/gl_state.h"
#include "video_core/renderer_opengl/gl_stream_buffer.h"
class OrphanBuffer : public OGLStreamBuffer {
public:
explicit OrphanBuffer(GLenum target) : OGLStreamBuffer(target) {}
~OrphanBuffer() override;
OGLStreamBuffer::OGLStreamBuffer(GLenum target, GLsizeiptr size, bool prefer_coherent)
: gl_target(target), buffer_size(size) {
gl_buffer.Create();
glBindBuffer(gl_target, gl_buffer.handle);
private:
void Create(size_t size, size_t sync_subdivide) override;
void Release() override;
GLsizeiptr allocate_size = size;
if (target == GL_ARRAY_BUFFER) {
// On AMD GPU there is a strange crash in indexed drawing. The crash happens when the buffer
// read position is near the end and is an out-of-bound access to the vertex buffer. This is
// probably a bug in the driver and is related to the usage of vec3<byte> attributes in the
// vertex array. Doubling the allocation size for the vertex buffer seems to avoid the
// crash.
allocate_size *= 2;
}
std::pair<u8*, GLintptr> Map(size_t size, size_t alignment) override;
void Unmap() override;
if (GLAD_GL_ARB_buffer_storage) {
persistent = true;
coherent = prefer_coherent;
GLbitfield flags =
GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | (coherent ? GL_MAP_COHERENT_BIT : 0);
glBufferStorage(gl_target, allocate_size, nullptr, flags);
mapped_ptr = static_cast<u8*>(glMapBufferRange(
gl_target, 0, buffer_size, flags | (coherent ? 0 : GL_MAP_FLUSH_EXPLICIT_BIT)));
} else {
glBufferData(gl_target, allocate_size, nullptr, GL_STREAM_DRAW);
}
}
std::vector<u8> data;
};
class StorageBuffer : public OGLStreamBuffer {
public:
explicit StorageBuffer(GLenum target) : OGLStreamBuffer(target) {}
~StorageBuffer() override;
private:
void Create(size_t size, size_t sync_subdivide) override;
void Release() override;
std::pair<u8*, GLintptr> Map(size_t size, size_t alignment) override;
void Unmap() override;
struct Fence {
OGLSync sync;
size_t offset;
};
std::deque<Fence> head;
std::deque<Fence> tail;
u8* mapped_ptr;
};
OGLStreamBuffer::OGLStreamBuffer(GLenum target) {
gl_target = target;
OGLStreamBuffer::~OGLStreamBuffer() {
if (persistent) {
glBindBuffer(gl_target, gl_buffer.handle);
glUnmapBuffer(gl_target);
}
gl_buffer.Release();
}
GLuint OGLStreamBuffer::GetHandle() const {
return gl_buffer.handle;
}
std::unique_ptr<OGLStreamBuffer> OGLStreamBuffer::MakeBuffer(bool storage_buffer, GLenum target) {
if (storage_buffer) {
return std::make_unique<StorageBuffer>(target);
}
return std::make_unique<OrphanBuffer>(target);
GLsizeiptr OGLStreamBuffer::GetSize() const {
return buffer_size;
}
OrphanBuffer::~OrphanBuffer() {
Release();
}
void OrphanBuffer::Create(size_t size, size_t /*sync_subdivide*/) {
buffer_pos = 0;
buffer_size = size;
data.resize(buffer_size);
if (gl_buffer.handle == 0) {
gl_buffer.Create();
glBindBuffer(gl_target, gl_buffer.handle);
}
glBufferData(gl_target, static_cast<GLsizeiptr>(buffer_size), nullptr, GL_STREAM_DRAW);
}
void OrphanBuffer::Release() {
gl_buffer.Release();
}
std::pair<u8*, GLintptr> OrphanBuffer::Map(size_t size, size_t alignment) {
buffer_pos = Common::AlignUp(buffer_pos, alignment);
if (buffer_pos + size > buffer_size) {
Create(std::max(buffer_size, size), 0);
}
mapped_size = size;
return std::make_pair(&data[buffer_pos], static_cast<GLintptr>(buffer_pos));
}
void OrphanBuffer::Unmap() {
glBufferSubData(gl_target, static_cast<GLintptr>(buffer_pos),
static_cast<GLsizeiptr>(mapped_size), &data[buffer_pos]);
buffer_pos += mapped_size;
}
StorageBuffer::~StorageBuffer() {
Release();
}
void StorageBuffer::Create(size_t size, size_t sync_subdivide) {
if (gl_buffer.handle != 0)
return;
buffer_pos = 0;
buffer_size = size;
buffer_sync_subdivide = std::max<size_t>(sync_subdivide, 1);
gl_buffer.Create();
glBindBuffer(gl_target, gl_buffer.handle);
glBufferStorage(gl_target, static_cast<GLsizeiptr>(buffer_size), nullptr,
GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT);
mapped_ptr = reinterpret_cast<u8*>(
glMapBufferRange(gl_target, 0, static_cast<GLsizeiptr>(buffer_size),
GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_FLUSH_EXPLICIT_BIT));
}
void StorageBuffer::Release() {
if (gl_buffer.handle == 0)
return;
glUnmapBuffer(gl_target);
gl_buffer.Release();
head.clear();
tail.clear();
}
std::pair<u8*, GLintptr> StorageBuffer::Map(size_t size, size_t alignment) {
std::tuple<u8*, GLintptr, bool> OGLStreamBuffer::Map(GLsizeiptr size, GLintptr alignment) {
ASSERT(size <= buffer_size);
OGLSync sync;
buffer_pos = Common::AlignUp(buffer_pos, alignment);
size_t effective_offset = Common::AlignDown(buffer_pos, buffer_sync_subdivide);
if (!head.empty() &&
(effective_offset > head.back().offset || buffer_pos + size > buffer_size)) {
ASSERT(head.back().sync.handle == 0);
head.back().sync.Create();
}
if (buffer_pos + size > buffer_size) {
if (!tail.empty()) {
std::swap(sync, tail.back().sync);
tail.clear();
}
std::swap(tail, head);
buffer_pos = 0;
effective_offset = 0;
}
while (!tail.empty() && buffer_pos + size > tail.front().offset) {
std::swap(sync, tail.front().sync);
tail.pop_front();
}
if (sync.handle != 0) {
glClientWaitSync(sync.handle, GL_SYNC_FLUSH_COMMANDS_BIT, GL_TIMEOUT_IGNORED);
sync.Release();
}
if (head.empty() || effective_offset > head.back().offset) {
head.emplace_back();
head.back().offset = effective_offset;
}
ASSERT(alignment <= buffer_size);
mapped_size = size;
return std::make_pair(&mapped_ptr[buffer_pos], static_cast<GLintptr>(buffer_pos));
if (alignment > 0) {
buffer_pos = Common::AlignUp<size_t>(buffer_pos, alignment);
}
void StorageBuffer::Unmap() {
glFlushMappedBufferRange(gl_target, static_cast<GLintptr>(buffer_pos),
static_cast<GLsizeiptr>(mapped_size));
buffer_pos += mapped_size;
bool invalidate = false;
if (buffer_pos + size > buffer_size) {
buffer_pos = 0;
invalidate = true;
if (persistent) {
glUnmapBuffer(gl_target);
}
}
if (invalidate | !persistent) {
GLbitfield flags = GL_MAP_WRITE_BIT | (persistent ? GL_MAP_PERSISTENT_BIT : 0) |
(coherent ? GL_MAP_COHERENT_BIT : GL_MAP_FLUSH_EXPLICIT_BIT) |
(invalidate ? GL_MAP_INVALIDATE_BUFFER_BIT : GL_MAP_UNSYNCHRONIZED_BIT);
mapped_ptr = static_cast<u8*>(
glMapBufferRange(gl_target, buffer_pos, buffer_size - buffer_pos, flags));
mapped_offset = buffer_pos;
}
return std::make_tuple(mapped_ptr + buffer_pos - mapped_offset, buffer_pos, invalidate);
}
void OGLStreamBuffer::Unmap(GLsizeiptr size) {
ASSERT(size <= mapped_size);
if (!coherent && size > 0) {
glFlushMappedBufferRange(gl_target, buffer_pos - mapped_offset, size);
}
if (!persistent) {
glUnmapBuffer(gl_target);
}
buffer_pos += size;
}

42
src/video_core/renderer_opengl/gl_stream_buffer.h
View file

@ -2,35 +2,41 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include <tuple>
#include <glad/glad.h>
#include "common/common_types.h"
#include "video_core/renderer_opengl/gl_resource_manager.h"
class OGLStreamBuffer : private NonCopyable {
public:
explicit OGLStreamBuffer(GLenum target);
virtual ~OGLStreamBuffer() = default;
public:
static std::unique_ptr<OGLStreamBuffer> MakeBuffer(bool storage_buffer, GLenum target);
virtual void Create(size_t size, size_t sync_subdivide) = 0;
virtual void Release() {}
explicit OGLStreamBuffer(GLenum target, GLsizeiptr size, bool prefer_coherent = false);
~OGLStreamBuffer();
GLuint GetHandle() const;
GLsizeiptr GetSize() const;
virtual std::pair<u8*, GLintptr> Map(size_t size, size_t alignment) = 0;
virtual void Unmap() = 0;
/*
* Allocates a linear chunk of memory in the GPU buffer with at least "size" bytes
* and the optional alignment requirement.
* If the buffer is full, the whole buffer is reallocated which invalidates old chunks.
* The return values are the pointer to the new chunk, the offset within the buffer,
* and the invalidation flag for previous chunks.
* The actual used size must be specified on unmapping the chunk.
*/
std::tuple<u8*, GLintptr, bool> Map(GLsizeiptr size, GLintptr alignment = 0);
protected:
void Unmap(GLsizeiptr size);
private:
OGLBuffer gl_buffer;
GLenum gl_target;
size_t buffer_pos = 0;
size_t buffer_size = 0;
size_t buffer_sync_subdivide = 0;
size_t mapped_size = 0;
bool coherent = false;
bool persistent = false;
GLintptr buffer_pos = 0;
GLsizeiptr buffer_size = 0;
GLintptr mapped_offset = 0;
GLsizeiptr mapped_size = 0;
u8* mapped_ptr = nullptr;
};