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/*
* Copyright (C) 2015 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 ANDROID_HWUI_BAKED_OP_RENDERER_H
#define ANDROID_HWUI_BAKED_OP_RENDERER_H
#include "BakedOpState.h"
#include "Matrix.h"
namespace android {
namespace uirenderer {
class Caches;
struct Glop;
class Layer;
class RenderState;
/**
* Main rendering manager for a collection of work - one frame + any contained FBOs.
*
* Manages frame and FBO lifecycle, binding the GL framebuffer as appropriate. This is the only
* place where FBOs are bound, created, and destroyed.
*
* All rendering operations will be sent by the Dispatcher, a collection of static methods,
* which has intentionally limited access to the renderer functionality.
*/
class BakedOpRenderer {
public:
/**
* Position agnostic shadow lighting info. Used with all shadow ops in scene.
*/
struct LightInfo {
float lightRadius = 0;
uint8_t ambientShadowAlpha = 0;
uint8_t spotShadowAlpha = 0;
};
BakedOpRenderer(Caches& caches, RenderState& renderState, bool opaque, const LightInfo& lightInfo)
: mRenderState(renderState)
, mCaches(caches)
, mOpaque(opaque)
, mLightInfo(lightInfo) {
}
RenderState& renderState() { return mRenderState; }
Caches& caches() { return mCaches; }
void startFrame(uint32_t width, uint32_t height, const Rect& repaintRect);
void endFrame();
OffscreenBuffer* startTemporaryLayer(uint32_t width, uint32_t height);
void startRepaintLayer(OffscreenBuffer* offscreenBuffer, const Rect& repaintRect);
void endLayer();
Texture* getTexture(const SkBitmap* bitmap);
const LightInfo& getLightInfo() { return mLightInfo; }
void renderGlop(const BakedOpState& state, const Glop& glop);
bool didDraw() { return mHasDrawn; }
private:
void setViewport(uint32_t width, uint32_t height);
void clearColorBuffer(const Rect& clearRect);
RenderState& mRenderState;
Caches& mCaches;
bool mOpaque;
bool mHasDrawn = false;
// render target state - setup by start/end layer/frame
// only valid to use in between start/end pairs.
struct {
GLuint frameBufferId = 0;
OffscreenBuffer* offscreenBuffer = nullptr;
uint32_t viewportWidth = 0;
uint32_t viewportHeight = 0;
Matrix4 orthoMatrix;
} mRenderTarget;
const LightInfo mLightInfo;
};
}; // namespace uirenderer
}; // namespace android
#endif // ANDROID_HWUI_BAKED_OP_RENDERER_H
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