Files
frameworks_base/libs/hwui/utils/PaintUtils.h
Stan Iliev c8e22a6532 TextureView Vulkan support and optimized OpenGL draw
Render TextureView as hardware bitmaps, instead of GL textures.
Cache SkImage for each observed GraphicBuffer, which is faster
even for GL.
Implement C++ SurfaceTexture, which allows Java SurfaceTexture
to be used with Vulkan HWUI render thread and application GL.
threads. Delete GLLayer and VkLayer classes and texture code
from old HWUI pipeline.

Test: Ran skiagl and skiavk pipeline with a TextureView app.
Test: TextureView CTS tests pass for GL pipeline.
Test: Ran Android NDK Native codec sample app.
Change-Id: Idc94f864ce2d34fd6ceff4be4fc7d3327e99879c
2018-08-29 10:22:03 -04:00

107 lines
3.2 KiB
C++

/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef PAINT_UTILS_H
#define PAINT_UTILS_H
#include <GLES2/gl2.h>
#include <utils/Blur.h>
#include <SkColorFilter.h>
#include <SkDrawLooper.h>
#include <SkPaint.h>
#include <SkShader.h>
namespace android {
namespace uirenderer {
/**
* Utility methods for accessing data within SkPaint, and providing defaults
* with optional SkPaint pointers.
*/
class PaintUtils {
public:
static inline GLenum getFilter(const SkPaint* paint) {
if (!paint || paint->getFilterQuality() != kNone_SkFilterQuality) {
return GL_LINEAR;
}
return GL_NEAREST;
}
static bool isOpaquePaint(const SkPaint* paint) {
if (!paint) return true; // default (paintless) behavior is SrcOver, black
if (paint->getAlpha() != 0xFF || PaintUtils::isBlendedShader(paint->getShader()) ||
PaintUtils::isBlendedColorFilter(paint->getColorFilter())) {
return false;
}
// Only let simple srcOver / src blending modes declare opaque, since behavior is clear.
SkBlendMode mode = paint->getBlendMode();
return mode == SkBlendMode::kSrcOver || mode == SkBlendMode::kSrc;
}
static bool isBlendedShader(const SkShader* shader) {
if (shader == nullptr) {
return false;
}
return !shader->isOpaque();
}
static bool isBlendedColorFilter(const SkColorFilter* filter) {
if (filter == nullptr) {
return false;
}
return (filter->getFlags() & SkColorFilter::kAlphaUnchanged_Flag) == 0;
}
struct TextShadow {
SkScalar radius;
float dx;
float dy;
SkColor color;
};
static inline bool getTextShadow(const SkPaint* paint, TextShadow* textShadow) {
SkDrawLooper::BlurShadowRec blur;
if (paint && paint->getLooper() && paint->getLooper()->asABlurShadow(&blur)) {
if (textShadow) {
textShadow->radius = Blur::convertSigmaToRadius(blur.fSigma);
textShadow->dx = blur.fOffset.fX;
textShadow->dy = blur.fOffset.fY;
textShadow->color = blur.fColor;
}
return true;
}
return false;
}
static inline bool hasTextShadow(const SkPaint* paint) { return getTextShadow(paint, nullptr); }
static inline SkBlendMode getBlendModeDirect(const SkPaint* paint) {
return paint ? paint->getBlendMode() : SkBlendMode::kSrcOver;
}
static inline int getAlphaDirect(const SkPaint* paint) {
return paint ? paint->getAlpha() : 255;
}
}; // class PaintUtils
} /* namespace uirenderer */
} /* namespace android */
#endif /* PAINT_UTILS_H */