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55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
// Copyright 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef GPU_COMMAND_BUFFER_COMMON_GPU_MEMORY_ALLOCATION_H_
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#define GPU_COMMAND_BUFFER_COMMON_GPU_MEMORY_ALLOCATION_H_
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#include "base/basictypes.h"
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namespace gpu {
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// These are per context memory allocation limits set by the GpuMemoryManager
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// and assigned to the browser and renderer context.
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// They will change over time, given memory availability, and browser state.
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struct MemoryAllocation {
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enum PriorityCutoff {
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// Allow no allocations.
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CUTOFF_ALLOW_NOTHING,
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// Allow only allocations that are strictly required for correct rendering.
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// For compositors, this is what is visible.
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CUTOFF_ALLOW_REQUIRED_ONLY,
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// Allow allocations that are not strictly needed for correct rendering, but
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// are nice to have for performance. For compositors, this includes textures
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// that are a few screens away from being visible.
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CUTOFF_ALLOW_NICE_TO_HAVE,
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// Allow all allocations.
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CUTOFF_ALLOW_EVERYTHING,
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CUTOFF_LAST = CUTOFF_ALLOW_EVERYTHING
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};
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// Limits when this renderer is visible.
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uint64 bytes_limit_when_visible;
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PriorityCutoff priority_cutoff_when_visible;
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MemoryAllocation()
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: bytes_limit_when_visible(0),
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priority_cutoff_when_visible(CUTOFF_ALLOW_NOTHING) {
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}
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MemoryAllocation(uint64 bytes_limit_when_visible)
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: bytes_limit_when_visible(bytes_limit_when_visible),
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priority_cutoff_when_visible(CUTOFF_ALLOW_EVERYTHING) {
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}
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bool Equals(const MemoryAllocation& other) const {
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return bytes_limit_when_visible ==
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other.bytes_limit_when_visible &&
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priority_cutoff_when_visible == other.priority_cutoff_when_visible;
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}
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};
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} // namespace content
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#endif // GPU_COMMAND_BUFFER_COMMON_GPU_MEMORY_ALLOCATION_H_
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