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 | 61 |
1 files changed, 28 insertions, 33 deletions
diff --git a/src/video_core/renderer_opengl/gl_stream_buffer.h b/src/video_core/renderer_opengl/gl_stream_buffer.h index 307a67113..6dbb6bfba 100644 --- a/src/video_core/renderer_opengl/gl_stream_buffer.h +++ b/src/video_core/renderer_opengl/gl_stream_buffer.h @@ -1,55 +1,50 @@ -// 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 <tuple> +#include <array> +#include <memory> +#include <span> +#include <utility> + #include <glad/glad.h> + #include "common/common_types.h" #include "video_core/renderer_opengl/gl_resource_manager.h" namespace OpenGL { -class Device; +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, GLsizeiptr size, bool vertex_data_usage); - ~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, 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); - - 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: - 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 buffer_size = 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 |