diff options
Diffstat (limited to 'src/video_core/renderer_opengl/gl_stream_buffer.h')
-rw-r--r-- | src/video_core/renderer_opengl/gl_stream_buffer.h | 60 |
1 files changed, 25 insertions, 35 deletions
diff --git a/src/video_core/renderer_opengl/gl_stream_buffer.h b/src/video_core/renderer_opengl/gl_stream_buffer.h index dd9cf67eb..6dbb6bfba 100644 --- a/src/video_core/renderer_opengl/gl_stream_buffer.h +++ b/src/video_core/renderer_opengl/gl_stream_buffer.h @@ -1,9 +1,12 @@ -// Copyright 2018 Citra Emulator Project +// Copyright 2021 yuzu Emulator Project // Licensed under GPLv2 or any later version // Refer to the license.txt file included. #pragma once +#include <array> +#include <memory> +#include <span> #include <utility> #include <glad/glad.h> @@ -13,48 +16,35 @@ namespace OpenGL { -class Device; -class StateTracker; +class StreamBuffer { + static constexpr size_t STREAM_BUFFER_SIZE = 64 * 1024 * 1024; + static constexpr size_t NUM_SYNCS = 16; + static constexpr size_t REGION_SIZE = STREAM_BUFFER_SIZE / NUM_SYNCS; + static constexpr size_t MAX_ALIGNMENT = 256; + static_assert(STREAM_BUFFER_SIZE % MAX_ALIGNMENT == 0); + static_assert(STREAM_BUFFER_SIZE % NUM_SYNCS == 0); + static_assert(REGION_SIZE % MAX_ALIGNMENT == 0); -class OGLStreamBuffer : private NonCopyable { public: - explicit OGLStreamBuffer(const Device& device, StateTracker& state_tracker_); - ~OGLStreamBuffer(); - - /* - * 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, and the offset within the buffer. - * The actual used size must be specified on unmapping the chunk. - */ - std::pair<u8*, GLintptr> Map(GLsizeiptr size, GLintptr alignment = 0); - - void Unmap(GLsizeiptr size); - - GLuint Handle() const { - return gl_buffer.handle; - } + explicit StreamBuffer(); - u64 Address() const { - return gpu_address; - } + [[nodiscard]] std::pair<std::span<u8>, size_t> Request(size_t size) noexcept; - GLsizeiptr Size() const noexcept { - return BUFFER_SIZE; + [[nodiscard]] GLuint Handle() const noexcept { + return buffer.handle; } private: - static constexpr GLsizeiptr BUFFER_SIZE = 256 * 1024 * 1024; - - StateTracker& state_tracker; - - OGLBuffer gl_buffer; + [[nodiscard]] static size_t Region(size_t offset) noexcept { + return offset / REGION_SIZE; + } - GLuint64EXT gpu_address = 0; - GLintptr buffer_pos = 0; - GLsizeiptr mapped_size = 0; - u8* mapped_ptr = nullptr; + size_t iterator = 0; + size_t used_iterator = 0; + size_t free_iterator = 0; + u8* mapped_pointer = nullptr; + OGLBuffer buffer; + std::array<OGLSync, NUM_SYNCS> fences; }; } // namespace OpenGL |