71 lines
2.1 KiB
C++
71 lines
2.1 KiB
C++
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// Copyright 2018 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <tuple>
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#include <vector>
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#include "common/alignment.h"
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#include "common/assert.h"
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#include "common/microprofile.h"
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#include "video_core/renderer_opengl/gl_device.h"
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#include "video_core/renderer_opengl/gl_state_tracker.h"
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#include "video_core/renderer_opengl/gl_stream_buffer.h"
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MICROPROFILE_DEFINE(OpenGL_StreamBuffer, "OpenGL", "Stream Buffer Orphaning",
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MP_RGB(128, 128, 192));
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namespace OpenGL {
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OGLStreamBuffer::OGLStreamBuffer(const Device& device, StateTracker& state_tracker_)
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: state_tracker{state_tracker_} {
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gl_buffer.Create();
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static constexpr GLbitfield flags = GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT;
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glNamedBufferStorage(gl_buffer.handle, BUFFER_SIZE, nullptr, flags);
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mapped_ptr = static_cast<u8*>(
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glMapNamedBufferRange(gl_buffer.handle, 0, BUFFER_SIZE, flags | GL_MAP_FLUSH_EXPLICIT_BIT));
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if (device.UseAssemblyShaders() || device.HasVertexBufferUnifiedMemory()) {
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glMakeNamedBufferResidentNV(gl_buffer.handle, GL_READ_ONLY);
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glGetNamedBufferParameterui64vNV(gl_buffer.handle, GL_BUFFER_GPU_ADDRESS_NV, &gpu_address);
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}
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}
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OGLStreamBuffer::~OGLStreamBuffer() {
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glUnmapNamedBuffer(gl_buffer.handle);
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gl_buffer.Release();
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}
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std::pair<u8*, GLintptr> OGLStreamBuffer::Map(GLsizeiptr size, GLintptr alignment) {
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ASSERT(size <= BUFFER_SIZE);
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ASSERT(alignment <= BUFFER_SIZE);
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mapped_size = size;
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if (alignment > 0) {
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buffer_pos = Common::AlignUp<std::size_t>(buffer_pos, alignment);
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}
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if (buffer_pos + size > BUFFER_SIZE) {
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MICROPROFILE_SCOPE(OpenGL_StreamBuffer);
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glInvalidateBufferData(gl_buffer.handle);
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state_tracker.InvalidateStreamBuffer();
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buffer_pos = 0;
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}
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return std::make_pair(mapped_ptr + buffer_pos, buffer_pos);
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}
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void OGLStreamBuffer::Unmap(GLsizeiptr size) {
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ASSERT(size <= mapped_size);
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if (size > 0) {
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glFlushMappedNamedBufferRange(gl_buffer.handle, buffer_pos, size);
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}
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buffer_pos += size;
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}
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} // namespace OpenGL
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