1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/angle/src/libGLESv2/Texture.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,275 @@
1.4 +//
1.5 +// Copyright (c) 2002-2013 The ANGLE Project Authors. All rights reserved.
1.6 +// Use of this source code is governed by a BSD-style license that can be
1.7 +// found in the LICENSE file.
1.8 +//
1.9 +
1.10 +// Texture.h: Defines the abstract gl::Texture class and its concrete derived
1.11 +// classes Texture2D and TextureCubeMap. Implements GL texture objects and
1.12 +// related functionality. [OpenGL ES 2.0.24] section 3.7 page 63.
1.13 +
1.14 +#ifndef LIBGLESV2_TEXTURE_H_
1.15 +#define LIBGLESV2_TEXTURE_H_
1.16 +
1.17 +#include <vector>
1.18 +
1.19 +#define GL_APICALL
1.20 +#include <GLES2/gl2.h>
1.21 +
1.22 +#include "common/debug.h"
1.23 +#include "common/RefCountObject.h"
1.24 +#include "libGLESv2/angletypes.h"
1.25 +
1.26 +namespace egl
1.27 +{
1.28 +class Surface;
1.29 +}
1.30 +
1.31 +namespace rx
1.32 +{
1.33 +class Renderer;
1.34 +class TextureStorageInterface;
1.35 +class TextureStorageInterface2D;
1.36 +class TextureStorageInterfaceCube;
1.37 +class RenderTarget;
1.38 +class Image;
1.39 +}
1.40 +
1.41 +namespace gl
1.42 +{
1.43 +class Framebuffer;
1.44 +class Renderbuffer;
1.45 +
1.46 +enum
1.47 +{
1.48 + // These are the maximums the implementation can support
1.49 + // The actual GL caps are limited by the device caps
1.50 + // and should be queried from the Context
1.51 + IMPLEMENTATION_MAX_TEXTURE_SIZE = 16384,
1.52 + IMPLEMENTATION_MAX_CUBE_MAP_TEXTURE_SIZE = 16384,
1.53 +
1.54 + IMPLEMENTATION_MAX_TEXTURE_LEVELS = 15 // 1+log2 of MAX_TEXTURE_SIZE
1.55 +};
1.56 +
1.57 +class Texture : public RefCountObject
1.58 +{
1.59 + public:
1.60 + Texture(rx::Renderer *renderer, GLuint id);
1.61 +
1.62 + virtual ~Texture();
1.63 +
1.64 + virtual void addProxyRef(const Renderbuffer *proxy) = 0;
1.65 + virtual void releaseProxy(const Renderbuffer *proxy) = 0;
1.66 +
1.67 + virtual GLenum getTarget() const = 0;
1.68 +
1.69 + bool setMinFilter(GLenum filter);
1.70 + bool setMagFilter(GLenum filter);
1.71 + bool setWrapS(GLenum wrap);
1.72 + bool setWrapT(GLenum wrap);
1.73 + bool setMaxAnisotropy(float textureMaxAnisotropy, float contextMaxAnisotropy);
1.74 + bool setUsage(GLenum usage);
1.75 +
1.76 + GLenum getMinFilter() const;
1.77 + GLenum getMagFilter() const;
1.78 + GLenum getWrapS() const;
1.79 + GLenum getWrapT() const;
1.80 + float getMaxAnisotropy() const;
1.81 + int getLodOffset();
1.82 + void getSamplerState(SamplerState *sampler);
1.83 + GLenum getUsage() const;
1.84 + bool isMipmapFiltered() const;
1.85 +
1.86 + virtual bool isSamplerComplete() const = 0;
1.87 +
1.88 + rx::TextureStorageInterface *getNativeTexture();
1.89 + virtual Renderbuffer *getRenderbuffer(GLenum target) = 0;
1.90 +
1.91 + virtual void generateMipmaps() = 0;
1.92 + virtual void copySubImage(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source) = 0;
1.93 +
1.94 + bool hasDirtyParameters() const;
1.95 + bool hasDirtyImages() const;
1.96 + void resetDirty();
1.97 + unsigned int getTextureSerial();
1.98 + unsigned int getRenderTargetSerial(GLenum target);
1.99 +
1.100 + bool isImmutable() const;
1.101 +
1.102 + static const GLuint INCOMPLETE_TEXTURE_ID = static_cast<GLuint>(-1); // Every texture takes an id at creation time. The value is arbitrary because it is never registered with the resource manager.
1.103 +
1.104 + protected:
1.105 + void setImage(GLint unpackAlignment, const void *pixels, rx::Image *image);
1.106 + bool subImage(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels, rx::Image *image);
1.107 + void setCompressedImage(GLsizei imageSize, const void *pixels, rx::Image *image);
1.108 + bool subImageCompressed(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void *pixels, rx::Image *image);
1.109 +
1.110 + GLint creationLevels(GLsizei width, GLsizei height) const;
1.111 + GLint creationLevels(GLsizei size) const;
1.112 +
1.113 + virtual void createTexture() = 0;
1.114 + virtual void updateTexture() = 0;
1.115 + virtual void convertToRenderTarget() = 0;
1.116 + virtual rx::RenderTarget *getRenderTarget(GLenum target) = 0;
1.117 +
1.118 + virtual int levelCount() = 0;
1.119 +
1.120 + rx::Renderer *mRenderer;
1.121 +
1.122 + SamplerState mSamplerState;
1.123 + GLenum mUsage;
1.124 +
1.125 + bool mDirtyImages;
1.126 +
1.127 + bool mImmutable;
1.128 +
1.129 + private:
1.130 + DISALLOW_COPY_AND_ASSIGN(Texture);
1.131 +
1.132 + virtual rx::TextureStorageInterface *getStorage(bool renderTarget) = 0;
1.133 +};
1.134 +
1.135 +class Texture2D : public Texture
1.136 +{
1.137 + public:
1.138 + Texture2D(rx::Renderer *renderer, GLuint id);
1.139 +
1.140 + ~Texture2D();
1.141 +
1.142 + void addProxyRef(const Renderbuffer *proxy);
1.143 + void releaseProxy(const Renderbuffer *proxy);
1.144 +
1.145 + virtual GLenum getTarget() const;
1.146 +
1.147 + GLsizei getWidth(GLint level) const;
1.148 + GLsizei getHeight(GLint level) const;
1.149 + GLenum getInternalFormat(GLint level) const;
1.150 + GLenum getActualFormat(GLint level) const;
1.151 + bool isCompressed(GLint level) const;
1.152 + bool isDepth(GLint level) const;
1.153 +
1.154 + void setImage(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
1.155 + void setCompressedImage(GLint level, GLenum format, GLsizei width, GLsizei height, GLsizei imageSize, const void *pixels);
1.156 + void subImage(GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
1.157 + void subImageCompressed(GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void *pixels);
1.158 + void copyImage(GLint level, GLenum format, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source);
1.159 + virtual void copySubImage(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source);
1.160 + void storage(GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height);
1.161 +
1.162 + virtual bool isSamplerComplete() const;
1.163 + virtual void bindTexImage(egl::Surface *surface);
1.164 + virtual void releaseTexImage();
1.165 +
1.166 + virtual void generateMipmaps();
1.167 +
1.168 + virtual Renderbuffer *getRenderbuffer(GLenum target);
1.169 +
1.170 + protected:
1.171 + friend class RenderbufferTexture2D;
1.172 + virtual rx::RenderTarget *getRenderTarget(GLenum target);
1.173 + virtual rx::RenderTarget *getDepthStencil(GLenum target);
1.174 + virtual int levelCount();
1.175 +
1.176 + private:
1.177 + DISALLOW_COPY_AND_ASSIGN(Texture2D);
1.178 +
1.179 + virtual void createTexture();
1.180 + virtual void updateTexture();
1.181 + virtual void convertToRenderTarget();
1.182 + virtual rx::TextureStorageInterface *getStorage(bool renderTarget);
1.183 +
1.184 + bool isMipmapComplete() const;
1.185 +
1.186 + void redefineImage(GLint level, GLint internalformat, GLsizei width, GLsizei height);
1.187 + void commitRect(GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height);
1.188 +
1.189 + rx::Image *mImageArray[IMPLEMENTATION_MAX_TEXTURE_LEVELS];
1.190 +
1.191 + rx::TextureStorageInterface2D *mTexStorage;
1.192 + egl::Surface *mSurface;
1.193 +
1.194 + // A specific internal reference count is kept for colorbuffer proxy references,
1.195 + // because, as the renderbuffer acting as proxy will maintain a binding pointer
1.196 + // back to this texture, there would be a circular reference if we used a binding
1.197 + // pointer here. This reference count will cause the pointer to be set to NULL if
1.198 + // the count drops to zero, but will not cause deletion of the Renderbuffer.
1.199 + Renderbuffer *mColorbufferProxy;
1.200 + unsigned int mProxyRefs;
1.201 +};
1.202 +
1.203 +class TextureCubeMap : public Texture
1.204 +{
1.205 + public:
1.206 + TextureCubeMap(rx::Renderer *renderer, GLuint id);
1.207 +
1.208 + ~TextureCubeMap();
1.209 +
1.210 + void addProxyRef(const Renderbuffer *proxy);
1.211 + void releaseProxy(const Renderbuffer *proxy);
1.212 +
1.213 + virtual GLenum getTarget() const;
1.214 +
1.215 + GLsizei getWidth(GLenum target, GLint level) const;
1.216 + GLsizei getHeight(GLenum target, GLint level) const;
1.217 + GLenum getInternalFormat(GLenum target, GLint level) const;
1.218 + GLenum getActualFormat(GLenum target, GLint level) const;
1.219 + bool isCompressed(GLenum target, GLint level) const;
1.220 +
1.221 + void setImagePosX(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
1.222 + void setImageNegX(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
1.223 + void setImagePosY(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
1.224 + void setImageNegY(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
1.225 + void setImagePosZ(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
1.226 + void setImageNegZ(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
1.227 +
1.228 + void setCompressedImage(GLenum face, GLint level, GLenum format, GLsizei width, GLsizei height, GLsizei imageSize, const void *pixels);
1.229 +
1.230 + void subImage(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
1.231 + void subImageCompressed(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void *pixels);
1.232 + void copyImage(GLenum target, GLint level, GLenum format, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source);
1.233 + virtual void copySubImage(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source);
1.234 + void storage(GLsizei levels, GLenum internalformat, GLsizei size);
1.235 +
1.236 + virtual bool isSamplerComplete() const;
1.237 +
1.238 + virtual void generateMipmaps();
1.239 +
1.240 + virtual Renderbuffer *getRenderbuffer(GLenum target);
1.241 +
1.242 + static unsigned int faceIndex(GLenum face);
1.243 +
1.244 + protected:
1.245 + friend class RenderbufferTextureCubeMap;
1.246 + virtual rx::RenderTarget *getRenderTarget(GLenum target);
1.247 + virtual int levelCount();
1.248 +
1.249 + private:
1.250 + DISALLOW_COPY_AND_ASSIGN(TextureCubeMap);
1.251 +
1.252 + virtual void createTexture();
1.253 + virtual void updateTexture();
1.254 + virtual void convertToRenderTarget();
1.255 + virtual rx::TextureStorageInterface *getStorage(bool renderTarget);
1.256 +
1.257 + bool isCubeComplete() const;
1.258 + bool isMipmapCubeComplete() const;
1.259 +
1.260 + void setImage(int faceIndex, GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels);
1.261 + void commitRect(int faceIndex, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height);
1.262 + void redefineImage(int faceIndex, GLint level, GLint internalformat, GLsizei width, GLsizei height);
1.263 +
1.264 + rx::Image *mImageArray[6][IMPLEMENTATION_MAX_TEXTURE_LEVELS];
1.265 +
1.266 + rx::TextureStorageInterfaceCube *mTexStorage;
1.267 +
1.268 + // A specific internal reference count is kept for colorbuffer proxy references,
1.269 + // because, as the renderbuffer acting as proxy will maintain a binding pointer
1.270 + // back to this texture, there would be a circular reference if we used a binding
1.271 + // pointer here. This reference count will cause the pointer to be set to NULL if
1.272 + // the count drops to zero, but will not cause deletion of the Renderbuffer.
1.273 + Renderbuffer *mFaceProxies[6];
1.274 + unsigned int *mFaceProxyRefs[6];
1.275 +};
1.276 +}
1.277 +
1.278 +#endif // LIBGLESV2_TEXTURE_H_
