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Diffstat (limited to '')
-rw-r--r-- | src/video_core/renderer_opengl/gl_buffer_cache.cpp | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/src/video_core/renderer_opengl/gl_buffer_cache.cpp b/src/video_core/renderer_opengl/gl_buffer_cache.cpp new file mode 100644 index 000000000..c85fbd306 --- /dev/null +++ b/src/video_core/renderer_opengl/gl_buffer_cache.cpp @@ -0,0 +1,90 @@ +// Copyright 2018 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "common/alignment.h" +#include "common/assert.h" +#include "core/core.h" +#include "core/memory.h" +#include "video_core/renderer_opengl/gl_buffer_cache.h" + +namespace OpenGL { + +OGLBufferCache::OGLBufferCache(size_t size) : stream_buffer(GL_ARRAY_BUFFER, size) {} + +GLintptr OGLBufferCache::UploadMemory(Tegra::GPUVAddr gpu_addr, size_t size, size_t alignment, + bool cache) { + auto& memory_manager = Core::System::GetInstance().GPU().MemoryManager(); + const boost::optional<VAddr> cpu_addr{memory_manager.GpuToCpuAddress(gpu_addr)}; + + // Cache management is a big overhead, so only cache entries with a given size. + // TODO: Figure out which size is the best for given games. + cache &= size >= 2048; + + if (cache) { + auto entry = TryGet(*cpu_addr); + if (entry) { + if (entry->size >= size && entry->alignment == alignment) { + return entry->offset; + } + Unregister(entry); + } + } + + AlignBuffer(alignment); + GLintptr uploaded_offset = buffer_offset; + + Memory::ReadBlock(*cpu_addr, buffer_ptr, size); + + buffer_ptr += size; + buffer_offset += size; + + if (cache) { + auto entry = std::make_shared<CachedBufferEntry>(); + entry->offset = uploaded_offset; + entry->size = size; + entry->alignment = alignment; + entry->addr = *cpu_addr; + Register(entry); + } + + return uploaded_offset; +} + +GLintptr OGLBufferCache::UploadHostMemory(const void* raw_pointer, size_t size, size_t alignment) { + AlignBuffer(alignment); + std::memcpy(buffer_ptr, raw_pointer, size); + GLintptr uploaded_offset = buffer_offset; + + buffer_ptr += size; + buffer_offset += size; + return uploaded_offset; +} + +void OGLBufferCache::Map(size_t max_size) { + bool invalidate; + std::tie(buffer_ptr, buffer_offset_base, invalidate) = + stream_buffer.Map(static_cast<GLsizeiptr>(max_size), 4); + buffer_offset = buffer_offset_base; + + if (invalidate) { + InvalidateAll(); + } +} +void OGLBufferCache::Unmap() { + stream_buffer.Unmap(buffer_offset - buffer_offset_base); +} + +GLuint OGLBufferCache::GetHandle() { + return stream_buffer.GetHandle(); +} + +void OGLBufferCache::AlignBuffer(size_t alignment) { + // Align the offset, not the mapped pointer + GLintptr offset_aligned = + static_cast<GLintptr>(Common::AlignUp(static_cast<size_t>(buffer_offset), alignment)); + buffer_ptr += offset_aligned - buffer_offset; + buffer_offset = offset_aligned; +} + +} // namespace OpenGL |