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gl_stream_buffer: Use InvalidateBufferData instead unmap and map 

Making the stream buffer resident increases GPU usage significantly on
some games. This seems to be addressed invalidating the stream buffer
with InvalidateBufferData instead of using a Unmap + Map (with
invalidation flags).
This commit is contained in:
ReinUsesLisp 2020-06-18 21:53:47 -03:00
parent 41a4090320
commit 39c97f1b65
2 changed files with 5 additions and 15 deletions
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19
src/video_core/renderer_opengl/gl_stream_buffer.cpp
View File

@ -57,30 +57,21 @@ std::tuple<u8*, GLintptr, bool> OGLStreamBuffer::Map(GLsizeiptr size, GLintptr a
bool invalidate = false;
if (buffer_pos + size > buffer_size) {
MICROPROFILE_SCOPE(OpenGL_StreamBuffer);
glInvalidateBufferData(gl_buffer.handle);
buffer_pos = 0;
invalidate = true;
glUnmapNamedBuffer(gl_buffer.handle);
}
if (invalidate) {
static const GLbitfield flags = GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT |
GL_MAP_INVALIDATE_BUFFER_BIT | GL_MAP_FLUSH_EXPLICIT_BIT;
MICROPROFILE_SCOPE(OpenGL_StreamBuffer);
mapped_ptr = static_cast<u8*>(
glMapNamedBufferRange(gl_buffer.handle, buffer_pos, buffer_size - buffer_pos, flags));
mapped_offset = buffer_pos;
}
return std::make_tuple(mapped_ptr + buffer_pos - mapped_offset, buffer_pos, invalidate);
return std::make_tuple(mapped_ptr + buffer_pos, buffer_pos, invalidate);
}
void OGLStreamBuffer::Unmap(GLsizeiptr size) {
ASSERT(size <= mapped_size);
if (size > 0) {
glFlushMappedNamedBufferRange(gl_buffer.handle, buffer_pos - mapped_offset, size);
glFlushMappedNamedBufferRange(gl_buffer.handle, buffer_pos, size);
}
buffer_pos += size;

1
src/video_core/renderer_opengl/gl_stream_buffer.h
View File

@ -48,7 +48,6 @@ private:
GLuint64EXT gpu_address = 0;
GLintptr buffer_pos = 0;
GLsizeiptr buffer_size = 0;
GLintptr mapped_offset = 0;
GLsizeiptr mapped_size = 0;
u8* mapped_ptr = nullptr;
};