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/*
* Copyright (C) 2010 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_TEXTURE_H
#define ANDROID_HWUI_TEXTURE_H
#include <GLES2/gl2.h>
namespace android {
namespace uirenderer {
class Caches;
class UvMapper;
/**
* Represents an OpenGL texture.
*/
class Texture {
public:
Texture(Caches& caches) : mCaches(caches) { }
virtual ~Texture() { }
inline void setWrap(GLenum wrap, bool bindTexture = false, bool force = false,
GLenum renderTarget = GL_TEXTURE_2D) {
setWrapST(wrap, wrap, bindTexture, force, renderTarget);
}
virtual void setWrapST(GLenum wrapS, GLenum wrapT, bool bindTexture = false,
bool force = false, GLenum renderTarget = GL_TEXTURE_2D);
inline void setFilter(GLenum filter, bool bindTexture = false, bool force = false,
GLenum renderTarget = GL_TEXTURE_2D) {
setFilterMinMag(filter, filter, bindTexture, force, renderTarget);
}
virtual void setFilterMinMag(GLenum min, GLenum mag, bool bindTexture = false,
bool force = false, GLenum renderTarget = GL_TEXTURE_2D);
/**
* Convenience method to call glDeleteTextures() on this texture's id.
*/
void deleteTexture() const;
/**
* Name of the texture.
*/
GLuint id = 0;
/**
* Generation of the backing bitmap,
*/
uint32_t generation = 0;
/**
* Indicates whether the texture requires blending.
*/
bool blend = false;
/**
* Width of the backing bitmap.
*/
uint32_t width = 0;
/**
* Height of the backing bitmap.
*/
uint32_t height = 0;
/**
* Indicates whether this texture should be cleaned up after use.
*/
bool cleanup = false;
/**
* Optional, size of the original bitmap.
*/
uint32_t bitmapSize = 0;
/**
* Indicates whether this texture will use trilinear filtering.
*/
bool mipMap = false;
/**
* Optional, pointer to a texture coordinates mapper.
*/
const UvMapper* uvMapper = nullptr;
/**
* Whether or not the Texture is marked in use and thus not evictable for
* the current frame. This is reset at the start of a new frame.
*/
void* isInUse = nullptr;
private:
/**
* Last wrap modes set on this texture.
*/
GLenum mWrapS = GL_CLAMP_TO_EDGE;
GLenum mWrapT = GL_CLAMP_TO_EDGE;
/**
* Last filters set on this texture.
*/
GLenum mMinFilter = GL_NEAREST;
GLenum mMagFilter = GL_NEAREST;
bool mFirstFilter = true;
bool mFirstWrap = true;
Caches& mCaches;
}; // struct Texture
class AutoTexture {
public:
AutoTexture(const Texture* texture): mTexture(texture) { }
~AutoTexture() {
if (mTexture && mTexture->cleanup) {
mTexture->deleteTexture();
delete mTexture;
}
}
private:
const Texture* mTexture;
}; // class AutoTexture
}; // namespace uirenderer
}; // namespace android
#endif // ANDROID_HWUI_TEXTURE_H
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