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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/webgl/webgl_context_attribute_helpers.h"
#include "third_party/blink/renderer/core/frame/settings.h"
#include "ui/gl/gpu_preference.h"
namespace blink {
V8WebGLPowerPreference::Enum ToGLPowerPreference(
CanvasContextCreationAttributesCore::PowerPreference power_preference) {
switch (power_preference) {
case CanvasContextCreationAttributesCore::PowerPreference::kDefault:
return V8WebGLPowerPreference::Enum::kDefault;
case CanvasContextCreationAttributesCore::PowerPreference::kLowPower:
return V8WebGLPowerPreference::Enum::kLowPower;
case CanvasContextCreationAttributesCore::PowerPreference::kHighPerformance:
return V8WebGLPowerPreference::Enum::kHighPerformance;
}
}
WebGLContextAttributes* ToWebGLContextAttributes(
const CanvasContextCreationAttributesCore& attrs) {
WebGLContextAttributes* result = WebGLContextAttributes::Create();
result->setAlpha(attrs.alpha);
result->setDepth(attrs.depth);
result->setStencil(attrs.stencil);
result->setAntialias(attrs.antialias);
result->setPremultipliedAlpha(attrs.premultiplied_alpha);
result->setPreserveDrawingBuffer(attrs.preserve_drawing_buffer);
result->setPowerPreference(ToGLPowerPreference(attrs.power_preference));
result->setFailIfMajorPerformanceCaveat(
attrs.fail_if_major_performance_caveat);
result->setXrCompatible(attrs.xr_compatible);
result->setDesynchronized(attrs.desynchronized);
return result;
}
Platform::ContextAttributes ToPlatformContextAttributes(
const CanvasContextCreationAttributesCore& attrs,
Platform::ContextType context_type) {
Platform::ContextAttributes result;
result.prefer_low_power_gpu =
(PowerPreferenceToGpuPreference(attrs.power_preference) ==
gl::GpuPreference::kLowPower);
result.fail_if_major_performance_caveat =
attrs.fail_if_major_performance_caveat;
result.context_type = context_type;
return result;
}
gl::GpuPreference PowerPreferenceToGpuPreference(
CanvasContextCreationAttributesCore::PowerPreference power_preference) {
// This code determines the handling of the "default" power preference.
if (power_preference ==
CanvasContextCreationAttributesCore::PowerPreference::kHighPerformance) {
return gl::GpuPreference::kHighPerformance;
}
return gl::GpuPreference::kLowPower;
}
} // namespace blink
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