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// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
//
// 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.
// Texture.h: Defines the abstract Texture class and its concrete derived
// classes Texture2D and TextureCubeMap. Implements GL texture objects and
// related functionality. [OpenGL ES 2.0.24] section 3.7 page 63.
#ifndef LIBGLES_CM_TEXTURE_H_
#define LIBGLES_CM_TEXTURE_H_
#include "Renderbuffer.h"
#include "common/Object.hpp"
#include "utilities.h"
#include "libEGL/Texture.hpp"
#include "common/debug.h"
#include <GLES/gl.h>
#include <vector>
namespace gl { class Surface; }
namespace es1
{
class Framebuffer;
enum
{
IMPLEMENTATION_MAX_TEXTURE_LEVELS = sw::MIPMAP_LEVELS,
IMPLEMENTATION_MAX_TEXTURE_SIZE = 1 << (IMPLEMENTATION_MAX_TEXTURE_LEVELS - 1),
IMPLEMENTATION_MAX_CUBE_MAP_TEXTURE_SIZE = 1 << (IMPLEMENTATION_MAX_TEXTURE_LEVELS - 1),
IMPLEMENTATION_MAX_RENDERBUFFER_SIZE = sw::OUTLINE_RESOLUTION,
};
class Texture : public egl::Texture
{
public:
explicit Texture(GLuint name);
sw::Resource *getResource() const;
virtual void addProxyRef(const Renderbuffer *proxy) = 0;
virtual void releaseProxy(const Renderbuffer *proxy) = 0;
virtual GLenum getTarget() const = 0;
bool setMinFilter(GLenum filter);
bool setMagFilter(GLenum filter);
bool setWrapS(GLenum wrap);
bool setWrapT(GLenum wrap);
bool setMaxAnisotropy(GLfloat textureMaxAnisotropy);
void setGenerateMipmap(GLboolean enable);
void setCropRect(GLint u, GLint v, GLint w, GLint h);
GLenum getMinFilter() const;
GLenum getMagFilter() const;
GLenum getWrapS() const;
GLenum getWrapT() const;
GLfloat getMaxAnisotropy() const;
GLboolean getGenerateMipmap() const;
GLint getCropRectU() const;
GLint getCropRectV() const;
GLint getCropRectW() const;
GLint getCropRectH() const;
virtual GLsizei getWidth(GLenum target, GLint level) const = 0;
virtual GLsizei getHeight(GLenum target, GLint level) const = 0;
virtual GLenum getFormat(GLenum target, GLint level) const = 0;
virtual GLenum getType(GLenum target, GLint level) const = 0;
virtual sw::Format getInternalFormat(GLenum target, GLint level) const = 0;
virtual int getLevelCount() const = 0;
virtual bool isSamplerComplete() const = 0;
virtual bool isCompressed(GLenum target, GLint level) const = 0;
virtual bool isDepth(GLenum target, GLint level) const = 0;
virtual Renderbuffer *getRenderbuffer(GLenum target) = 0;
virtual egl::Image *getRenderTarget(GLenum target, unsigned int level) = 0;
egl::Image *createSharedImage(GLenum target, unsigned int level);
virtual bool isShared(GLenum target, unsigned int level) const = 0;
virtual void generateMipmaps() = 0;
virtual void autoGenerateMipmaps() = 0;
virtual void copySubImage(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source) = 0;
protected:
~Texture() override;
void setImage(egl::Context *context, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels, egl::Image *image);
void subImage(egl::Context *context, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels, egl::Image *image);
void setCompressedImage(GLsizei imageSize, const void *pixels, egl::Image *image);
void subImageCompressed(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void *pixels, egl::Image *image);
bool copy(egl::Image *source, const sw::Rect &sourceRect, GLenum destFormat, GLint xoffset, GLint yoffset, egl::Image *dest);
bool isMipmapFiltered() const;
GLenum mMinFilter;
GLenum mMagFilter;
GLenum mWrapS;
GLenum mWrapT;
GLfloat mMaxAnisotropy;
GLboolean generateMipmap;
GLint cropRectU;
GLint cropRectV;
GLint cropRectW;
GLint cropRectH;
sw::Resource *resource;
};
class Texture2D : public Texture
{
public:
explicit Texture2D(GLuint name);
void addProxyRef(const Renderbuffer *proxy) override;
void releaseProxy(const Renderbuffer *proxy) override;
void sweep() override;
GLenum getTarget() const override;
GLsizei getWidth(GLenum target, GLint level) const override;
GLsizei getHeight(GLenum target, GLint level) const override;
GLenum getFormat(GLenum target, GLint level) const override;
GLenum getType(GLenum target, GLint level) const override;
sw::Format getInternalFormat(GLenum target, GLint level) const override;
int getLevelCount() const override;
void setImage(egl::Context *context, GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
void setCompressedImage(GLint level, GLenum format, GLsizei width, GLsizei height, GLsizei imageSize, const void *pixels);
void subImage(egl::Context *context, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
void subImageCompressed(GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void *pixels);
void copyImage(GLint level, GLenum format, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source);
void copySubImage(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source);
void setSharedImage(egl::Image *image);
bool isSamplerComplete() const override;
bool isCompressed(GLenum target, GLint level) const override;
bool isDepth(GLenum target, GLint level) const override;
void bindTexImage(gl::Surface *surface);
void releaseTexImage() override;
void generateMipmaps() override;
void autoGenerateMipmaps() override;
Renderbuffer *getRenderbuffer(GLenum target) override;
egl::Image *getRenderTarget(GLenum target, unsigned int level) override;
bool isShared(GLenum target, unsigned int level) const override;
egl::Image *getImage(unsigned int level);
protected:
~Texture2D() override;
bool isMipmapComplete() const;
egl::Image *image[IMPLEMENTATION_MAX_TEXTURE_LEVELS];
gl::Surface *mSurface;
// A specific internal reference count is kept for colorbuffer proxy references,
// because, as the renderbuffer acting as proxy will maintain a binding pointer
// back to this texture, there would be a circular reference if we used a binding
// pointer here. This reference count will cause the pointer to be set to null if
// the count drops to zero, but will not cause deletion of the Renderbuffer.
Renderbuffer *mColorbufferProxy;
unsigned int mProxyRefs;
};
class TextureExternal : public Texture2D
{
public:
explicit TextureExternal(GLuint name);
GLenum getTarget() const override;
protected:
~TextureExternal() override;
};
}
#endif // LIBGLES_CM_TEXTURE_H_