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buffer_cache: Return handles instead of pointer to handles

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The original idea of returning pointers is that handles can be moved.
The problem is that the implementation didn't take that in mind and made
everything harder to work with. This commit drops pointer to handles and
returns the handles themselves. While it is still true that handles can
be invalidated, this way we get an old handle instead of a dangling
pointer.

This problem can be solved in the future with sparse buffers.
This commit is contained in:
ReinUsesLisp
2020-04-04 02:54:55 -03:00
parent 7e4a132a77
commit 090fd3fefa
14 changed files with 90 additions and 228 deletions
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18
src/video_core/renderer_opengl/gl_buffer_cache.cpp
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@@ -55,33 +55,31 @@ void OGLBufferCache::WriteBarrier() {
glMemoryBarrier(GL_ALL_BARRIER_BITS);
}
const GLuint* OGLBufferCache::ToHandle(const Buffer& buffer) {
GLuint OGLBufferCache::ToHandle(const Buffer& buffer) {
return buffer->GetHandle();
}
const GLuint* OGLBufferCache::GetEmptyBuffer(std::size_t) {
static const GLuint null_buffer = 0;
return &null_buffer;
GLuint OGLBufferCache::GetEmptyBuffer(std::size_t) {
return 0;
}
void OGLBufferCache::UploadBlockData(const Buffer& buffer, std::size_t offset, std::size_t size,
const u8* data) {
glNamedBufferSubData(*buffer->GetHandle(), static_cast<GLintptr>(offset),
glNamedBufferSubData(buffer->GetHandle(), static_cast<GLintptr>(offset),
static_cast<GLsizeiptr>(size), data);
}
void OGLBufferCache::DownloadBlockData(const Buffer& buffer, std::size_t offset, std::size_t size,
u8* data) {
MICROPROFILE_SCOPE(OpenGL_Buffer_Download);
glGetNamedBufferSubData(*buffer->GetHandle(), static_cast<GLintptr>(offset),
glGetNamedBufferSubData(buffer->GetHandle(), static_cast<GLintptr>(offset),
static_cast<GLsizeiptr>(size), data);
}
void OGLBufferCache::CopyBlock(const Buffer& src, const Buffer& dst, std::size_t src_offset,
std::size_t dst_offset, std::size_t size) {
glCopyNamedBufferSubData(*src->GetHandle(), *dst->GetHandle(),
static_cast<GLintptr>(src_offset), static_cast<GLintptr>(dst_offset),
static_cast<GLsizeiptr>(size));
glCopyNamedBufferSubData(src->GetHandle(), dst->GetHandle(), static_cast<GLintptr>(src_offset),
static_cast<GLintptr>(dst_offset), static_cast<GLsizeiptr>(size));
}
OGLBufferCache::BufferInfo OGLBufferCache::ConstBufferUpload(const void* raw_pointer,
@@ -89,7 +87,7 @@ OGLBufferCache::BufferInfo OGLBufferCache::ConstBufferUpload(const void* raw_poi
DEBUG_ASSERT(cbuf_cursor < std::size(cbufs));
const GLuint& cbuf = cbufs[cbuf_cursor++];
glNamedBufferSubData(cbuf, 0, static_cast<GLsizeiptr>(size), raw_pointer);
return {&cbuf, 0};
return {cbuf, 0};
}
} // namespace OpenGL