michael@0: #include "precompiled.h"
michael@0: //
michael@0: // Copyright (c) 2002-2013 The ANGLE Project Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: //
michael@0: 
michael@0: // Texture.cpp: Implements the gl::Texture class and its derived classes
michael@0: // Texture2D and TextureCubeMap. Implements GL texture objects and related
michael@0: // functionality. [OpenGL ES 2.0.24] section 3.7 page 63.
michael@0: 
michael@0: #include "libGLESv2/Texture.h"
michael@0: 
michael@0: #include "libGLESv2/main.h"
michael@0: #include "libGLESv2/mathutil.h"
michael@0: #include "libGLESv2/utilities.h"
michael@0: #include "libGLESv2/renderer/Blit.h"
michael@0: #include "libGLESv2/Renderbuffer.h"
michael@0: #include "libGLESv2/renderer/Image.h"
michael@0: #include "libGLESv2/renderer/Renderer.h"
michael@0: #include "libGLESv2/renderer/TextureStorage.h"
michael@0: #include "libEGL/Surface.h"
michael@0: 
michael@0: namespace gl
michael@0: {
michael@0: 
michael@0: Texture::Texture(rx::Renderer *renderer, GLuint id) : RefCountObject(id)
michael@0: {
michael@0:     mRenderer = renderer;
michael@0: 
michael@0:     mSamplerState.minFilter = GL_NEAREST_MIPMAP_LINEAR;
michael@0:     mSamplerState.magFilter = GL_LINEAR;
michael@0:     mSamplerState.wrapS = GL_REPEAT;
michael@0:     mSamplerState.wrapT = GL_REPEAT;
michael@0:     mSamplerState.maxAnisotropy = 1.0f;
michael@0:     mSamplerState.lodOffset = 0;
michael@0:     mUsage = GL_NONE;
michael@0:     
michael@0:     mDirtyImages = true;
michael@0: 
michael@0:     mImmutable = false;
michael@0: }
michael@0: 
michael@0: Texture::~Texture()
michael@0: {
michael@0: }
michael@0: 
michael@0: // Returns true on successful filter state update (valid enum parameter)
michael@0: bool Texture::setMinFilter(GLenum filter)
michael@0: {
michael@0:     switch (filter)
michael@0:     {
michael@0:       case GL_NEAREST:
michael@0:       case GL_LINEAR:
michael@0:       case GL_NEAREST_MIPMAP_NEAREST:
michael@0:       case GL_LINEAR_MIPMAP_NEAREST:
michael@0:       case GL_NEAREST_MIPMAP_LINEAR:
michael@0:       case GL_LINEAR_MIPMAP_LINEAR:
michael@0:         mSamplerState.minFilter = filter;
michael@0:         return true;
michael@0:       default:
michael@0:         return false;
michael@0:     }
michael@0: }
michael@0: 
michael@0: // Returns true on successful filter state update (valid enum parameter)
michael@0: bool Texture::setMagFilter(GLenum filter)
michael@0: {
michael@0:     switch (filter)
michael@0:     {
michael@0:       case GL_NEAREST:
michael@0:       case GL_LINEAR:
michael@0:         mSamplerState.magFilter = filter;
michael@0:         return true;
michael@0:       default:
michael@0:         return false;
michael@0:     }
michael@0: }
michael@0: 
michael@0: // Returns true on successful wrap state update (valid enum parameter)
michael@0: bool Texture::setWrapS(GLenum wrap)
michael@0: {
michael@0:     switch (wrap)
michael@0:     {
michael@0:       case GL_REPEAT:
michael@0:       case GL_CLAMP_TO_EDGE:
michael@0:       case GL_MIRRORED_REPEAT:
michael@0:         mSamplerState.wrapS = wrap;
michael@0:         return true;
michael@0:       default:
michael@0:         return false;
michael@0:     }
michael@0: }
michael@0: 
michael@0: // Returns true on successful wrap state update (valid enum parameter)
michael@0: bool Texture::setWrapT(GLenum wrap)
michael@0: {
michael@0:     switch (wrap)
michael@0:     {
michael@0:       case GL_REPEAT:
michael@0:       case GL_CLAMP_TO_EDGE:
michael@0:       case GL_MIRRORED_REPEAT:
michael@0:         mSamplerState.wrapT = wrap;
michael@0:         return true;
michael@0:       default:
michael@0:         return false;
michael@0:     }
michael@0: }
michael@0: 
michael@0: // Returns true on successful max anisotropy update (valid anisotropy value)
michael@0: bool Texture::setMaxAnisotropy(float textureMaxAnisotropy, float contextMaxAnisotropy)
michael@0: {
michael@0:     textureMaxAnisotropy = std::min(textureMaxAnisotropy, contextMaxAnisotropy);
michael@0:     if (textureMaxAnisotropy < 1.0f)
michael@0:     {
michael@0:         return false;
michael@0:     }
michael@0: 
michael@0:     mSamplerState.maxAnisotropy = textureMaxAnisotropy;
michael@0: 
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: // Returns true on successful usage state update (valid enum parameter)
michael@0: bool Texture::setUsage(GLenum usage)
michael@0: {
michael@0:     switch (usage)
michael@0:     {
michael@0:       case GL_NONE:
michael@0:       case GL_FRAMEBUFFER_ATTACHMENT_ANGLE:
michael@0:         mUsage = usage;
michael@0:         return true;
michael@0:       default:
michael@0:         return false;
michael@0:     }
michael@0: }
michael@0: 
michael@0: GLenum Texture::getMinFilter() const
michael@0: {
michael@0:     return mSamplerState.minFilter;
michael@0: }
michael@0: 
michael@0: GLenum Texture::getMagFilter() const
michael@0: {
michael@0:     return mSamplerState.magFilter;
michael@0: }
michael@0: 
michael@0: GLenum Texture::getWrapS() const
michael@0: {
michael@0:     return mSamplerState.wrapS;
michael@0: }
michael@0: 
michael@0: GLenum Texture::getWrapT() const
michael@0: {
michael@0:     return mSamplerState.wrapT;
michael@0: }
michael@0: 
michael@0: float Texture::getMaxAnisotropy() const
michael@0: {
michael@0:     return mSamplerState.maxAnisotropy;
michael@0: }
michael@0: 
michael@0: int Texture::getLodOffset()
michael@0: {
michael@0:     rx::TextureStorageInterface *texture = getStorage(false);
michael@0:     return texture ? texture->getLodOffset() : 0;
michael@0: }
michael@0: 
michael@0: void Texture::getSamplerState(SamplerState *sampler)
michael@0: {
michael@0:     *sampler = mSamplerState;
michael@0:     sampler->lodOffset = getLodOffset();
michael@0: }
michael@0: 
michael@0: GLenum Texture::getUsage() const
michael@0: {
michael@0:     return mUsage;
michael@0: }
michael@0: 
michael@0: bool Texture::isMipmapFiltered() const
michael@0: {
michael@0:     switch (mSamplerState.minFilter)
michael@0:     {
michael@0:       case GL_NEAREST:
michael@0:       case GL_LINEAR:
michael@0:         return false;
michael@0:       case GL_NEAREST_MIPMAP_NEAREST:
michael@0:       case GL_LINEAR_MIPMAP_NEAREST:
michael@0:       case GL_NEAREST_MIPMAP_LINEAR:
michael@0:       case GL_LINEAR_MIPMAP_LINEAR:
michael@0:         return true;
michael@0:       default: UNREACHABLE();
michael@0:         return false;
michael@0:     }
michael@0: }
michael@0: 
michael@0: void Texture::setImage(GLint unpackAlignment, const void *pixels, rx::Image *image)
michael@0: {
michael@0:     if (pixels != NULL)
michael@0:     {
michael@0:         image->loadData(0, 0, image->getWidth(), image->getHeight(), unpackAlignment, pixels);
michael@0:         mDirtyImages = true;
michael@0:     }
michael@0: }
michael@0: 
michael@0: void Texture::setCompressedImage(GLsizei imageSize, const void *pixels, rx::Image *image)
michael@0: {
michael@0:     if (pixels != NULL)
michael@0:     {
michael@0:         image->loadCompressedData(0, 0, image->getWidth(), image->getHeight(), pixels);
michael@0:         mDirtyImages = true;
michael@0:     }
michael@0: }
michael@0: 
michael@0: bool Texture::subImage(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels, rx::Image *image)
michael@0: {
michael@0:     if (pixels != NULL)
michael@0:     {
michael@0:         image->loadData(xoffset, yoffset, width, height, unpackAlignment, pixels);
michael@0:         mDirtyImages = true;
michael@0:     }
michael@0: 
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: bool Texture::subImageCompressed(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void *pixels, rx::Image *image)
michael@0: {
michael@0:     if (pixels != NULL)
michael@0:     {
michael@0:         image->loadCompressedData(xoffset, yoffset, width, height, pixels);
michael@0:         mDirtyImages = true;
michael@0:     }
michael@0: 
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: rx::TextureStorageInterface *Texture::getNativeTexture()
michael@0: {
michael@0:     // ensure the underlying texture is created
michael@0: 
michael@0:     rx::TextureStorageInterface *storage = getStorage(false);
michael@0:     if (storage)
michael@0:     {
michael@0:         updateTexture();
michael@0:     }
michael@0: 
michael@0:     return storage;
michael@0: }
michael@0: 
michael@0: bool Texture::hasDirtyImages() const
michael@0: {
michael@0:     return mDirtyImages;
michael@0: }
michael@0: 
michael@0: void Texture::resetDirty()
michael@0: {
michael@0:     mDirtyImages = false;
michael@0: }
michael@0: 
michael@0: unsigned int Texture::getTextureSerial()
michael@0: {
michael@0:     rx::TextureStorageInterface *texture = getStorage(false);
michael@0:     return texture ? texture->getTextureSerial() : 0;
michael@0: }
michael@0: 
michael@0: unsigned int Texture::getRenderTargetSerial(GLenum target)
michael@0: {
michael@0:     rx::TextureStorageInterface *texture = getStorage(true);
michael@0:     return texture ? texture->getRenderTargetSerial(target) : 0;
michael@0: }
michael@0: 
michael@0: bool Texture::isImmutable() const
michael@0: {
michael@0:     return mImmutable;
michael@0: }
michael@0: 
michael@0: GLint Texture::creationLevels(GLsizei width, GLsizei height) const
michael@0: {
michael@0:     if ((isPow2(width) && isPow2(height)) || mRenderer->getNonPower2TextureSupport())
michael@0:     {
michael@0:         return 0;   // Maximum number of levels
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         // OpenGL ES 2.0 without GL_OES_texture_npot does not permit NPOT mipmaps.
michael@0:         return 1;
michael@0:     }
michael@0: }
michael@0: 
michael@0: GLint Texture::creationLevels(GLsizei size) const
michael@0: {
michael@0:     return creationLevels(size, size);
michael@0: }
michael@0: 
michael@0: Texture2D::Texture2D(rx::Renderer *renderer, GLuint id) : Texture(renderer, id)
michael@0: {
michael@0:     mTexStorage = NULL;
michael@0:     mSurface = NULL;
michael@0:     mColorbufferProxy = NULL;
michael@0:     mProxyRefs = 0;
michael@0: 
michael@0:     for (int i = 0; i < IMPLEMENTATION_MAX_TEXTURE_LEVELS; ++i)
michael@0:     {
michael@0:         mImageArray[i] = renderer->createImage();
michael@0:     }
michael@0: }
michael@0: 
michael@0: Texture2D::~Texture2D()
michael@0: {
michael@0:     mColorbufferProxy = NULL;
michael@0: 
michael@0:     delete mTexStorage;
michael@0:     mTexStorage = NULL;
michael@0:     
michael@0:     if (mSurface)
michael@0:     {
michael@0:         mSurface->setBoundTexture(NULL);
michael@0:         mSurface = NULL;
michael@0:     }
michael@0: 
michael@0:     for (int i = 0; i < IMPLEMENTATION_MAX_TEXTURE_LEVELS; ++i)
michael@0:     {
michael@0:         delete mImageArray[i];
michael@0:     }
michael@0: }
michael@0: 
michael@0: // We need to maintain a count of references to renderbuffers acting as 
michael@0: // proxies for this texture, so that we do not attempt to use a pointer 
michael@0: // to a renderbuffer proxy which has been deleted.
michael@0: void Texture2D::addProxyRef(const Renderbuffer *proxy)
michael@0: {
michael@0:     mProxyRefs++;
michael@0: }
michael@0: 
michael@0: void Texture2D::releaseProxy(const Renderbuffer *proxy)
michael@0: {
michael@0:     if (mProxyRefs > 0)
michael@0:         mProxyRefs--;
michael@0: 
michael@0:     if (mProxyRefs == 0)
michael@0:         mColorbufferProxy = NULL;
michael@0: }
michael@0: 
michael@0: GLenum Texture2D::getTarget() const
michael@0: {
michael@0:     return GL_TEXTURE_2D;
michael@0: }
michael@0: 
michael@0: GLsizei Texture2D::getWidth(GLint level) const
michael@0: {
michael@0:     if (level < IMPLEMENTATION_MAX_TEXTURE_LEVELS)
michael@0:         return mImageArray[level]->getWidth();
michael@0:     else
michael@0:         return 0;
michael@0: }
michael@0: 
michael@0: GLsizei Texture2D::getHeight(GLint level) const
michael@0: {
michael@0:     if (level < IMPLEMENTATION_MAX_TEXTURE_LEVELS)
michael@0:         return mImageArray[level]->getHeight();
michael@0:     else
michael@0:         return 0;
michael@0: }
michael@0: 
michael@0: GLenum Texture2D::getInternalFormat(GLint level) const
michael@0: {
michael@0:     if (level < IMPLEMENTATION_MAX_TEXTURE_LEVELS)
michael@0:         return mImageArray[level]->getInternalFormat();
michael@0:     else
michael@0:         return GL_NONE;
michael@0: }
michael@0: 
michael@0: GLenum Texture2D::getActualFormat(GLint level) const
michael@0: {
michael@0:     if (level < IMPLEMENTATION_MAX_TEXTURE_LEVELS)
michael@0:         return mImageArray[level]->getActualFormat();
michael@0:     else
michael@0:         return D3DFMT_UNKNOWN;
michael@0: }
michael@0: 
michael@0: void Texture2D::redefineImage(GLint level, GLint internalformat, GLsizei width, GLsizei height)
michael@0: {
michael@0:     releaseTexImage();
michael@0: 
michael@0:     // If there currently is a corresponding storage texture image, it has these parameters
michael@0:     const int storageWidth = std::max(1, mImageArray[0]->getWidth() >> level);
michael@0:     const int storageHeight = std::max(1, mImageArray[0]->getHeight() >> level);
michael@0:     const int storageFormat = mImageArray[0]->getInternalFormat();
michael@0: 
michael@0:     mImageArray[level]->redefine(mRenderer, internalformat, width, height, false);
michael@0: 
michael@0:     if (mTexStorage)
michael@0:     {
michael@0:         const int storageLevels = mTexStorage->levelCount();
michael@0:         
michael@0:         if ((level >= storageLevels && storageLevels != 0) ||
michael@0:             width != storageWidth ||
michael@0:             height != storageHeight ||
michael@0:             internalformat != storageFormat)   // Discard mismatched storage
michael@0:         {
michael@0:             for (int i = 0; i < IMPLEMENTATION_MAX_TEXTURE_LEVELS; i++)
michael@0:             {
michael@0:                 mImageArray[i]->markDirty();
michael@0:             }
michael@0: 
michael@0:             delete mTexStorage;
michael@0:             mTexStorage = NULL;
michael@0:             mDirtyImages = true;
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: void Texture2D::setImage(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels)
michael@0: {
michael@0:     GLint internalformat = ConvertSizedInternalFormat(format, type);
michael@0:     redefineImage(level, internalformat, width, height);
michael@0: 
michael@0:     Texture::setImage(unpackAlignment, pixels, mImageArray[level]);
michael@0: }
michael@0: 
michael@0: void Texture2D::bindTexImage(egl::Surface *surface)
michael@0: {
michael@0:     releaseTexImage();
michael@0: 
michael@0:     GLint internalformat = surface->getFormat();
michael@0: 
michael@0:     mImageArray[0]->redefine(mRenderer, internalformat, surface->getWidth(), surface->getHeight(), true);
michael@0: 
michael@0:     delete mTexStorage;
michael@0:     mTexStorage = new rx::TextureStorageInterface2D(mRenderer, surface->getSwapChain());
michael@0: 
michael@0:     mDirtyImages = true;
michael@0:     mSurface = surface;
michael@0:     mSurface->setBoundTexture(this);
michael@0: }
michael@0: 
michael@0: void Texture2D::releaseTexImage()
michael@0: {
michael@0:     if (mSurface)
michael@0:     {
michael@0:         mSurface->setBoundTexture(NULL);
michael@0:         mSurface = NULL;
michael@0: 
michael@0:         if (mTexStorage)
michael@0:         {
michael@0:             delete mTexStorage;
michael@0:             mTexStorage = NULL;
michael@0:         }
michael@0: 
michael@0:         for (int i = 0; i < IMPLEMENTATION_MAX_TEXTURE_LEVELS; i++)
michael@0:         {
michael@0:             mImageArray[i]->redefine(mRenderer, GL_NONE, 0, 0, true);
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: void Texture2D::setCompressedImage(GLint level, GLenum format, GLsizei width, GLsizei height, GLsizei imageSize, const void *pixels)
michael@0: {
michael@0:     // compressed formats don't have separate sized internal formats-- we can just use the compressed format directly
michael@0:     redefineImage(level, format, width, height);
michael@0: 
michael@0:     Texture::setCompressedImage(imageSize, pixels, mImageArray[level]);
michael@0: }
michael@0: 
michael@0: void Texture2D::commitRect(GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height)
michael@0: {
michael@0:     if (level < levelCount())
michael@0:     {
michael@0:         rx::Image *image = mImageArray[level];
michael@0:         if (image->updateSurface(mTexStorage, level, xoffset, yoffset, width, height))
michael@0:         {
michael@0:             image->markClean();
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: void Texture2D::subImage(GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels)
michael@0: {
michael@0:     if (Texture::subImage(xoffset, yoffset, width, height, format, type, unpackAlignment, pixels, mImageArray[level]))
michael@0:     {
michael@0:         commitRect(level, xoffset, yoffset, width, height);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void Texture2D::subImageCompressed(GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void *pixels)
michael@0: {
michael@0:     if (Texture::subImageCompressed(xoffset, yoffset, width, height, format, imageSize, pixels, mImageArray[level]))
michael@0:     {
michael@0:         commitRect(level, xoffset, yoffset, width, height);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void Texture2D::copyImage(GLint level, GLenum format, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source)
michael@0: {
michael@0:     GLint internalformat = ConvertSizedInternalFormat(format, GL_UNSIGNED_BYTE);
michael@0:     redefineImage(level, internalformat, width, height);
michael@0: 
michael@0:     if (!mImageArray[level]->isRenderableFormat())
michael@0:     {
michael@0:         mImageArray[level]->copy(0, 0, x, y, width, height, source);
michael@0:         mDirtyImages = true;
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         if (!mTexStorage || !mTexStorage->isRenderTarget())
michael@0:         {
michael@0:             convertToRenderTarget();
michael@0:         }
michael@0:         
michael@0:         mImageArray[level]->markClean();
michael@0: 
michael@0:         if (width != 0 && height != 0 && level < levelCount())
michael@0:         {
michael@0:             gl::Rectangle sourceRect;
michael@0:             sourceRect.x = x;
michael@0:             sourceRect.width = width;
michael@0:             sourceRect.y = y;
michael@0:             sourceRect.height = height;
michael@0: 
michael@0:             mRenderer->copyImage(source, sourceRect, format, 0, 0, mTexStorage, level);
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: void Texture2D::copySubImage(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source)
michael@0: {
michael@0:     if (xoffset + width > mImageArray[level]->getWidth() || yoffset + height > mImageArray[level]->getHeight())
michael@0:     {
michael@0:         return gl::error(GL_INVALID_VALUE);
michael@0:     }
michael@0: 
michael@0:     if (!mImageArray[level]->isRenderableFormat() || (!mTexStorage && !isSamplerComplete()))
michael@0:     {
michael@0:         mImageArray[level]->copy(xoffset, yoffset, x, y, width, height, source);
michael@0:         mDirtyImages = true;
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         if (!mTexStorage || !mTexStorage->isRenderTarget())
michael@0:         {
michael@0:             convertToRenderTarget();
michael@0:         }
michael@0:         
michael@0:         updateTexture();
michael@0: 
michael@0:         if (level < levelCount())
michael@0:         {
michael@0:             gl::Rectangle sourceRect;
michael@0:             sourceRect.x = x;
michael@0:             sourceRect.width = width;
michael@0:             sourceRect.y = y;
michael@0:             sourceRect.height = height;
michael@0: 
michael@0:             mRenderer->copyImage(source, sourceRect, 
michael@0:                                  gl::ExtractFormat(mImageArray[0]->getInternalFormat()),
michael@0:                                  xoffset, yoffset, mTexStorage, level);
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: void Texture2D::storage(GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height)
michael@0: {
michael@0:     delete mTexStorage;
michael@0:     mTexStorage = new rx::TextureStorageInterface2D(mRenderer, levels, internalformat, mUsage, false, width, height);
michael@0:     mImmutable = true;
michael@0: 
michael@0:     for (int level = 0; level < levels; level++)
michael@0:     {
michael@0:         mImageArray[level]->redefine(mRenderer, internalformat, width, height, true);
michael@0:         width = std::max(1, width >> 1);
michael@0:         height = std::max(1, height >> 1);
michael@0:     }
michael@0: 
michael@0:     for (int level = levels; level < IMPLEMENTATION_MAX_TEXTURE_LEVELS; level++)
michael@0:     {
michael@0:         mImageArray[level]->redefine(mRenderer, GL_NONE, 0, 0, true);
michael@0:     }
michael@0: 
michael@0:     if (mTexStorage->isManaged())
michael@0:     {
michael@0:         int levels = levelCount();
michael@0: 
michael@0:         for (int level = 0; level < levels; level++)
michael@0:         {
michael@0:             mImageArray[level]->setManagedSurface(mTexStorage, level);
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: // Tests for 2D texture sampling completeness. [OpenGL ES 2.0.24] section 3.8.2 page 85.
michael@0: bool Texture2D::isSamplerComplete() const
michael@0: {
michael@0:     GLsizei width = mImageArray[0]->getWidth();
michael@0:     GLsizei height = mImageArray[0]->getHeight();
michael@0: 
michael@0:     if (width <= 0 || height <= 0)
michael@0:     {
michael@0:         return false;
michael@0:     }
michael@0: 
michael@0:     bool mipmapping = isMipmapFiltered();
michael@0:     bool filtering, renderable;
michael@0: 
michael@0:     if ((IsFloat32Format(getInternalFormat(0)) && !mRenderer->getFloat32TextureSupport(&filtering, &renderable)) ||
michael@0:         (IsFloat16Format(getInternalFormat(0)) && !mRenderer->getFloat16TextureSupport(&filtering, &renderable)))
michael@0:     {
michael@0:         if (mSamplerState.magFilter != GL_NEAREST ||
michael@0:             (mSamplerState.minFilter != GL_NEAREST && mSamplerState.minFilter != GL_NEAREST_MIPMAP_NEAREST))
michael@0:         {
michael@0:             return false;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     bool npotSupport = mRenderer->getNonPower2TextureSupport();
michael@0: 
michael@0:     if (!npotSupport)
michael@0:     {
michael@0:         if ((mSamplerState.wrapS != GL_CLAMP_TO_EDGE && !isPow2(width)) ||
michael@0:             (mSamplerState.wrapT != GL_CLAMP_TO_EDGE && !isPow2(height)))
michael@0:         {
michael@0:             return false;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     if (mipmapping)
michael@0:     {
michael@0:         if (!npotSupport)
michael@0:         {
michael@0:             if (!isPow2(width) || !isPow2(height))
michael@0:             {
michael@0:                 return false;
michael@0:             }
michael@0:         }
michael@0: 
michael@0:         if (!isMipmapComplete())
michael@0:         {
michael@0:             return false;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: // Tests for 2D texture (mipmap) completeness. [OpenGL ES 2.0.24] section 3.7.10 page 81.
michael@0: bool Texture2D::isMipmapComplete() const
michael@0: {
michael@0:     if (isImmutable())
michael@0:     {
michael@0:         return true;
michael@0:     }
michael@0: 
michael@0:     GLsizei width = mImageArray[0]->getWidth();
michael@0:     GLsizei height = mImageArray[0]->getHeight();
michael@0: 
michael@0:     if (width <= 0 || height <= 0)
michael@0:     {
michael@0:         return false;
michael@0:     }
michael@0: 
michael@0:     int q = log2(std::max(width, height));
michael@0: 
michael@0:     for (int level = 1; level <= q; level++)
michael@0:     {
michael@0:         if (mImageArray[level]->getInternalFormat() != mImageArray[0]->getInternalFormat())
michael@0:         {
michael@0:             return false;
michael@0:         }
michael@0: 
michael@0:         if (mImageArray[level]->getWidth() != std::max(1, width >> level))
michael@0:         {
michael@0:             return false;
michael@0:         }
michael@0: 
michael@0:         if (mImageArray[level]->getHeight() != std::max(1, height >> level))
michael@0:         {
michael@0:             return false;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: bool Texture2D::isCompressed(GLint level) const
michael@0: {
michael@0:     return IsCompressed(getInternalFormat(level));
michael@0: }
michael@0: 
michael@0: bool Texture2D::isDepth(GLint level) const
michael@0: {
michael@0:     return IsDepthTexture(getInternalFormat(level));
michael@0: }
michael@0: 
michael@0: // Constructs a native texture resource from the texture images
michael@0: void Texture2D::createTexture()
michael@0: {
michael@0:     GLsizei width = mImageArray[0]->getWidth();
michael@0:     GLsizei height = mImageArray[0]->getHeight();
michael@0: 
michael@0:     if (!(width > 0 && height > 0))
michael@0:         return; // do not attempt to create native textures for nonexistant data
michael@0: 
michael@0:     GLint levels = creationLevels(width, height);
michael@0:     GLenum internalformat = mImageArray[0]->getInternalFormat();
michael@0: 
michael@0:     delete mTexStorage;
michael@0:     mTexStorage = new rx::TextureStorageInterface2D(mRenderer, levels, internalformat, mUsage, false, width, height);
michael@0:     
michael@0:     if (mTexStorage->isManaged())
michael@0:     {
michael@0:         int levels = levelCount();
michael@0: 
michael@0:         for (int level = 0; level < levels; level++)
michael@0:         {
michael@0:             mImageArray[level]->setManagedSurface(mTexStorage, level);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     mDirtyImages = true;
michael@0: }
michael@0: 
michael@0: void Texture2D::updateTexture()
michael@0: {
michael@0:     bool mipmapping = (isMipmapFiltered() && isMipmapComplete());
michael@0: 
michael@0:     int levels = (mipmapping ? levelCount() : 1);
michael@0: 
michael@0:     for (int level = 0; level < levels; level++)
michael@0:     {
michael@0:         rx::Image *image = mImageArray[level];
michael@0: 
michael@0:         if (image->isDirty())
michael@0:         {
michael@0:             commitRect(level, 0, 0, mImageArray[level]->getWidth(), mImageArray[level]->getHeight());
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: void Texture2D::convertToRenderTarget()
michael@0: {
michael@0:     rx::TextureStorageInterface2D *newTexStorage = NULL;
michael@0: 
michael@0:     if (mImageArray[0]->getWidth() != 0 && mImageArray[0]->getHeight() != 0)
michael@0:     {
michael@0:         GLsizei width = mImageArray[0]->getWidth();
michael@0:         GLsizei height = mImageArray[0]->getHeight();
michael@0:         GLint levels = mTexStorage != NULL ? mTexStorage->levelCount() : creationLevels(width, height);
michael@0:         GLenum internalformat = mImageArray[0]->getInternalFormat();
michael@0: 
michael@0:         newTexStorage = new rx::TextureStorageInterface2D(mRenderer, levels, internalformat, GL_FRAMEBUFFER_ATTACHMENT_ANGLE, true, width, height);
michael@0: 
michael@0:         if (mTexStorage != NULL)
michael@0:         {
michael@0:             if (!mRenderer->copyToRenderTarget(newTexStorage, mTexStorage))
michael@0:             {   
michael@0:                 delete newTexStorage;
michael@0:                 return gl::error(GL_OUT_OF_MEMORY);
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     delete mTexStorage;
michael@0:     mTexStorage = newTexStorage;
michael@0: 
michael@0:     mDirtyImages = true;
michael@0: }
michael@0: 
michael@0: void Texture2D::generateMipmaps()
michael@0: {
michael@0:     if (!mRenderer->getNonPower2TextureSupport())
michael@0:     {
michael@0:         if (!isPow2(mImageArray[0]->getWidth()) || !isPow2(mImageArray[0]->getHeight()))
michael@0:         {
michael@0:             return gl::error(GL_INVALID_OPERATION);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     // Purge array levels 1 through q and reset them to represent the generated mipmap levels.
michael@0:     unsigned int q = log2(std::max(mImageArray[0]->getWidth(), mImageArray[0]->getHeight()));
michael@0:     for (unsigned int i = 1; i <= q; i++)
michael@0:     {
michael@0:         redefineImage(i, mImageArray[0]->getInternalFormat(),
michael@0:                       std::max(mImageArray[0]->getWidth() >> i, 1),
michael@0:                       std::max(mImageArray[0]->getHeight() >> i, 1));
michael@0:     }
michael@0: 
michael@0:     if (mTexStorage && mTexStorage->isRenderTarget())
michael@0:     {
michael@0:         for (unsigned int i = 1; i <= q; i++)
michael@0:         {
michael@0:             mTexStorage->generateMipmap(i);
michael@0: 
michael@0:             mImageArray[i]->markClean();
michael@0:         }
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         for (unsigned int i = 1; i <= q; i++)
michael@0:         {
michael@0:             mRenderer->generateMipmap(mImageArray[i], mImageArray[i - 1]);
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: Renderbuffer *Texture2D::getRenderbuffer(GLenum target)
michael@0: {
michael@0:     if (target != GL_TEXTURE_2D)
michael@0:     {
michael@0:         return gl::error(GL_INVALID_OPERATION, (Renderbuffer *)NULL);
michael@0:     }
michael@0: 
michael@0:     if (mColorbufferProxy == NULL)
michael@0:     {
michael@0:         mColorbufferProxy = new Renderbuffer(mRenderer, id(), new RenderbufferTexture2D(this, target));
michael@0:     }
michael@0: 
michael@0:     return mColorbufferProxy;
michael@0: }
michael@0: 
michael@0: rx::RenderTarget *Texture2D::getRenderTarget(GLenum target)
michael@0: {
michael@0:     ASSERT(target == GL_TEXTURE_2D);
michael@0: 
michael@0:     // ensure the underlying texture is created
michael@0:     if (getStorage(true) == NULL)
michael@0:     {
michael@0:         return NULL;
michael@0:     }
michael@0: 
michael@0:     updateTexture();
michael@0:     
michael@0:     // ensure this is NOT a depth texture
michael@0:     if (isDepth(0))
michael@0:     {
michael@0:         return NULL;
michael@0:     }
michael@0: 
michael@0:     return mTexStorage->getRenderTarget();
michael@0: }
michael@0: 
michael@0: rx::RenderTarget *Texture2D::getDepthStencil(GLenum target)
michael@0: {
michael@0:     ASSERT(target == GL_TEXTURE_2D);
michael@0: 
michael@0:     // ensure the underlying texture is created
michael@0:     if (getStorage(true) == NULL)
michael@0:     {
michael@0:         return NULL;
michael@0:     }
michael@0: 
michael@0:     updateTexture();
michael@0: 
michael@0:     // ensure this is actually a depth texture
michael@0:     if (!isDepth(0))
michael@0:     {
michael@0:         return NULL;
michael@0:     }
michael@0:     return mTexStorage->getRenderTarget();
michael@0: }
michael@0: 
michael@0: int Texture2D::levelCount()
michael@0: {
michael@0:     return mTexStorage ? mTexStorage->levelCount() : 0;
michael@0: }
michael@0: 
michael@0: rx::TextureStorageInterface *Texture2D::getStorage(bool renderTarget)
michael@0: {
michael@0:     if (!mTexStorage || (renderTarget && !mTexStorage->isRenderTarget()))
michael@0:     {
michael@0:         if (renderTarget)
michael@0:         {
michael@0:             convertToRenderTarget();
michael@0:         }
michael@0:         else
michael@0:         {
michael@0:             createTexture();
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     return mTexStorage;
michael@0: }
michael@0: 
michael@0: TextureCubeMap::TextureCubeMap(rx::Renderer *renderer, GLuint id) : Texture(renderer, id)
michael@0: {
michael@0:     mTexStorage = NULL;
michael@0:     for (int i = 0; i < 6; i++)
michael@0:     {
michael@0:         mFaceProxies[i] = NULL;
michael@0:         mFaceProxyRefs[i] = 0;
michael@0: 
michael@0:         for (int j = 0; j < IMPLEMENTATION_MAX_TEXTURE_LEVELS; ++j)
michael@0:         {
michael@0:             mImageArray[i][j] = renderer->createImage();
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: TextureCubeMap::~TextureCubeMap()
michael@0: {
michael@0:     for (int i = 0; i < 6; i++)
michael@0:     {
michael@0:         mFaceProxies[i] = NULL;
michael@0: 
michael@0:         for (int j = 0; j < IMPLEMENTATION_MAX_TEXTURE_LEVELS; ++j)
michael@0:         {
michael@0:             delete mImageArray[i][j];
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     delete mTexStorage;
michael@0:     mTexStorage = NULL;
michael@0: }
michael@0: 
michael@0: // We need to maintain a count of references to renderbuffers acting as 
michael@0: // proxies for this texture, so that the texture is not deleted while 
michael@0: // proxy references still exist. If the reference count drops to zero,
michael@0: // we set our proxy pointer NULL, so that a new attempt at referencing
michael@0: // will cause recreation.
michael@0: void TextureCubeMap::addProxyRef(const Renderbuffer *proxy)
michael@0: {
michael@0:     for (int i = 0; i < 6; i++)
michael@0:     {
michael@0:         if (mFaceProxies[i] == proxy)
michael@0:             mFaceProxyRefs[i]++;
michael@0:     }
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::releaseProxy(const Renderbuffer *proxy)
michael@0: {
michael@0:     for (int i = 0; i < 6; i++)
michael@0:     {
michael@0:         if (mFaceProxies[i] == proxy)
michael@0:         {
michael@0:             if (mFaceProxyRefs[i] > 0)
michael@0:                 mFaceProxyRefs[i]--;
michael@0: 
michael@0:             if (mFaceProxyRefs[i] == 0)
michael@0:                 mFaceProxies[i] = NULL;
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: GLenum TextureCubeMap::getTarget() const
michael@0: {
michael@0:     return GL_TEXTURE_CUBE_MAP;
michael@0: }
michael@0: 
michael@0: GLsizei TextureCubeMap::getWidth(GLenum target, GLint level) const
michael@0: {
michael@0:     if (level < IMPLEMENTATION_MAX_TEXTURE_LEVELS)
michael@0:         return mImageArray[faceIndex(target)][level]->getWidth();
michael@0:     else
michael@0:         return 0;
michael@0: }
michael@0: 
michael@0: GLsizei TextureCubeMap::getHeight(GLenum target, GLint level) const
michael@0: {
michael@0:     if (level < IMPLEMENTATION_MAX_TEXTURE_LEVELS)
michael@0:         return mImageArray[faceIndex(target)][level]->getHeight();
michael@0:     else
michael@0:         return 0;
michael@0: }
michael@0: 
michael@0: GLenum TextureCubeMap::getInternalFormat(GLenum target, GLint level) const
michael@0: {
michael@0:     if (level < IMPLEMENTATION_MAX_TEXTURE_LEVELS)
michael@0:         return mImageArray[faceIndex(target)][level]->getInternalFormat();
michael@0:     else
michael@0:         return GL_NONE;
michael@0: }
michael@0: 
michael@0: GLenum TextureCubeMap::getActualFormat(GLenum target, GLint level) const
michael@0: {
michael@0:     if (level < IMPLEMENTATION_MAX_TEXTURE_LEVELS)
michael@0:         return mImageArray[faceIndex(target)][level]->getActualFormat();
michael@0:     else
michael@0:         return D3DFMT_UNKNOWN;
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::setImagePosX(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels)
michael@0: {
michael@0:     setImage(0, level, width, height, format, type, unpackAlignment, pixels);
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::setImageNegX(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels)
michael@0: {
michael@0:     setImage(1, level, width, height, format, type, unpackAlignment, pixels);
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::setImagePosY(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels)
michael@0: {
michael@0:     setImage(2, level, width, height, format, type, unpackAlignment, pixels);
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::setImageNegY(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels)
michael@0: {
michael@0:     setImage(3, level, width, height, format, type, unpackAlignment, pixels);
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::setImagePosZ(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels)
michael@0: {
michael@0:     setImage(4, level, width, height, format, type, unpackAlignment, pixels);
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::setImageNegZ(GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels)
michael@0: {
michael@0:     setImage(5, level, width, height, format, type, unpackAlignment, pixels);
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::setCompressedImage(GLenum face, GLint level, GLenum format, GLsizei width, GLsizei height, GLsizei imageSize, const void *pixels)
michael@0: {
michael@0:     // compressed formats don't have separate sized internal formats-- we can just use the compressed format directly
michael@0:     redefineImage(faceIndex(face), level, format, width, height);
michael@0: 
michael@0:     Texture::setCompressedImage(imageSize, pixels, mImageArray[faceIndex(face)][level]);
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::commitRect(int face, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height)
michael@0: {
michael@0:     if (level < levelCount())
michael@0:     {
michael@0:         rx::Image *image = mImageArray[face][level];
michael@0:         if (image->updateSurface(mTexStorage, face, level, xoffset, yoffset, width, height))
michael@0:             image->markClean();
michael@0:     }
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::subImage(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels)
michael@0: {
michael@0:     if (Texture::subImage(xoffset, yoffset, width, height, format, type, unpackAlignment, pixels, mImageArray[faceIndex(target)][level]))
michael@0:     {
michael@0:         commitRect(faceIndex(target), level, xoffset, yoffset, width, height);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::subImageCompressed(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void *pixels)
michael@0: {
michael@0:     if (Texture::subImageCompressed(xoffset, yoffset, width, height, format, imageSize, pixels, mImageArray[faceIndex(target)][level]))
michael@0:     {
michael@0:         commitRect(faceIndex(target), level, xoffset, yoffset, width, height);
michael@0:     }
michael@0: }
michael@0: 
michael@0: // Tests for cube map sampling completeness. [OpenGL ES 2.0.24] section 3.8.2 page 86.
michael@0: bool TextureCubeMap::isSamplerComplete() const
michael@0: {
michael@0:     int size = mImageArray[0][0]->getWidth();
michael@0: 
michael@0:     bool mipmapping = isMipmapFiltered();
michael@0:     bool filtering, renderable;
michael@0: 
michael@0:     if ((gl::ExtractType(getInternalFormat(GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0)) == GL_FLOAT && !mRenderer->getFloat32TextureSupport(&filtering, &renderable)) ||
michael@0:         (gl::ExtractType(getInternalFormat(GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0) == GL_HALF_FLOAT_OES) && !mRenderer->getFloat16TextureSupport(&filtering, &renderable)))
michael@0:     {
michael@0:         if (mSamplerState.magFilter != GL_NEAREST ||
michael@0:             (mSamplerState.minFilter != GL_NEAREST && mSamplerState.minFilter != GL_NEAREST_MIPMAP_NEAREST))
michael@0:         {
michael@0:             return false;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     if (!isPow2(size) && !mRenderer->getNonPower2TextureSupport())
michael@0:     {
michael@0:         if (mSamplerState.wrapS != GL_CLAMP_TO_EDGE || mSamplerState.wrapT != GL_CLAMP_TO_EDGE || mipmapping)
michael@0:         {
michael@0:             return false;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     if (!mipmapping)
michael@0:     {
michael@0:         if (!isCubeComplete())
michael@0:         {
michael@0:             return false;
michael@0:         }
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         if (!isMipmapCubeComplete())   // Also tests for isCubeComplete()
michael@0:         {
michael@0:             return false;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: // Tests for cube texture completeness. [OpenGL ES 2.0.24] section 3.7.10 page 81.
michael@0: bool TextureCubeMap::isCubeComplete() const
michael@0: {
michael@0:     if (mImageArray[0][0]->getWidth() <= 0 || mImageArray[0][0]->getHeight() != mImageArray[0][0]->getWidth())
michael@0:     {
michael@0:         return false;
michael@0:     }
michael@0: 
michael@0:     for (unsigned int face = 1; face < 6; face++)
michael@0:     {
michael@0:         if (mImageArray[face][0]->getWidth() != mImageArray[0][0]->getWidth() ||
michael@0:             mImageArray[face][0]->getWidth() != mImageArray[0][0]->getHeight() ||
michael@0:             mImageArray[face][0]->getInternalFormat() != mImageArray[0][0]->getInternalFormat())
michael@0:         {
michael@0:             return false;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: bool TextureCubeMap::isMipmapCubeComplete() const
michael@0: {
michael@0:     if (isImmutable())
michael@0:     {
michael@0:         return true;
michael@0:     }
michael@0: 
michael@0:     if (!isCubeComplete())
michael@0:     {
michael@0:         return false;
michael@0:     }
michael@0: 
michael@0:     GLsizei size = mImageArray[0][0]->getWidth();
michael@0: 
michael@0:     int q = log2(size);
michael@0: 
michael@0:     for (int face = 0; face < 6; face++)
michael@0:     {
michael@0:         for (int level = 1; level <= q; level++)
michael@0:         {
michael@0:             if (mImageArray[face][level]->getInternalFormat() != mImageArray[0][0]->getInternalFormat())
michael@0:             {
michael@0:                 return false;
michael@0:             }
michael@0: 
michael@0:             if (mImageArray[face][level]->getWidth() != std::max(1, size >> level))
michael@0:             {
michael@0:                 return false;
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: bool TextureCubeMap::isCompressed(GLenum target, GLint level) const
michael@0: {
michael@0:     return IsCompressed(getInternalFormat(target, level));
michael@0: }
michael@0: 
michael@0: // Constructs a native texture resource from the texture images, or returns an existing one
michael@0: void TextureCubeMap::createTexture()
michael@0: {
michael@0:     GLsizei size = mImageArray[0][0]->getWidth();
michael@0: 
michael@0:     if (!(size > 0))
michael@0:         return; // do not attempt to create native textures for nonexistant data
michael@0: 
michael@0:     GLint levels = creationLevels(size);
michael@0:     GLenum internalformat = mImageArray[0][0]->getInternalFormat();
michael@0: 
michael@0:     delete mTexStorage;
michael@0:     mTexStorage = new rx::TextureStorageInterfaceCube(mRenderer, levels, internalformat, mUsage, false, size);
michael@0: 
michael@0:     if (mTexStorage->isManaged())
michael@0:     {
michael@0:         int levels = levelCount();
michael@0: 
michael@0:         for (int face = 0; face < 6; face++)
michael@0:         {
michael@0:             for (int level = 0; level < levels; level++)
michael@0:             {
michael@0:                 mImageArray[face][level]->setManagedSurface(mTexStorage, face, level);
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     mDirtyImages = true;
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::updateTexture()
michael@0: {
michael@0:     bool mipmapping = isMipmapFiltered() && isMipmapCubeComplete();
michael@0: 
michael@0:     for (int face = 0; face < 6; face++)
michael@0:     {
michael@0:         int levels = (mipmapping ? levelCount() : 1);
michael@0: 
michael@0:         for (int level = 0; level < levels; level++)
michael@0:         {
michael@0:             rx::Image *image = mImageArray[face][level];
michael@0: 
michael@0:             if (image->isDirty())
michael@0:             {
michael@0:                 commitRect(face, level, 0, 0, image->getWidth(), image->getHeight());
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::convertToRenderTarget()
michael@0: {
michael@0:     rx::TextureStorageInterfaceCube *newTexStorage = NULL;
michael@0: 
michael@0:     if (mImageArray[0][0]->getWidth() != 0)
michael@0:     {
michael@0:         GLsizei size = mImageArray[0][0]->getWidth();
michael@0:         GLint levels = mTexStorage != NULL ? mTexStorage->levelCount() : creationLevels(size);
michael@0:         GLenum internalformat = mImageArray[0][0]->getInternalFormat();
michael@0: 
michael@0:         newTexStorage = new rx::TextureStorageInterfaceCube(mRenderer, levels, internalformat, GL_FRAMEBUFFER_ATTACHMENT_ANGLE, true, size);
michael@0: 
michael@0:         if (mTexStorage != NULL)
michael@0:         {
michael@0:             if (!mRenderer->copyToRenderTarget(newTexStorage, mTexStorage))
michael@0:             {
michael@0:                 delete newTexStorage;
michael@0:                 return gl::error(GL_OUT_OF_MEMORY);
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     delete mTexStorage;
michael@0:     mTexStorage = newTexStorage;
michael@0: 
michael@0:     mDirtyImages = true;
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::setImage(int faceIndex, GLint level, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint unpackAlignment, const void *pixels)
michael@0: {
michael@0:     GLint internalformat = ConvertSizedInternalFormat(format, type);
michael@0:     redefineImage(faceIndex, level, internalformat, width, height);
michael@0: 
michael@0:     Texture::setImage(unpackAlignment, pixels, mImageArray[faceIndex][level]);
michael@0: }
michael@0: 
michael@0: unsigned int TextureCubeMap::faceIndex(GLenum face)
michael@0: {
michael@0:     META_ASSERT(GL_TEXTURE_CUBE_MAP_NEGATIVE_X - GL_TEXTURE_CUBE_MAP_POSITIVE_X == 1);
michael@0:     META_ASSERT(GL_TEXTURE_CUBE_MAP_POSITIVE_Y - GL_TEXTURE_CUBE_MAP_POSITIVE_X == 2);
michael@0:     META_ASSERT(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y - GL_TEXTURE_CUBE_MAP_POSITIVE_X == 3);
michael@0:     META_ASSERT(GL_TEXTURE_CUBE_MAP_POSITIVE_Z - GL_TEXTURE_CUBE_MAP_POSITIVE_X == 4);
michael@0:     META_ASSERT(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z - GL_TEXTURE_CUBE_MAP_POSITIVE_X == 5);
michael@0: 
michael@0:     return face - GL_TEXTURE_CUBE_MAP_POSITIVE_X;
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::redefineImage(int face, GLint level, GLint internalformat, GLsizei width, GLsizei height)
michael@0: {
michael@0:     // If there currently is a corresponding storage texture image, it has these parameters
michael@0:     const int storageWidth = std::max(1, mImageArray[0][0]->getWidth() >> level);
michael@0:     const int storageHeight = std::max(1, mImageArray[0][0]->getHeight() >> level);
michael@0:     const int storageFormat = mImageArray[0][0]->getInternalFormat();
michael@0: 
michael@0:     mImageArray[face][level]->redefine(mRenderer, internalformat, width, height, false);
michael@0: 
michael@0:     if (mTexStorage)
michael@0:     {
michael@0:         const int storageLevels = mTexStorage->levelCount();
michael@0:         
michael@0:         if ((level >= storageLevels && storageLevels != 0) ||
michael@0:             width != storageWidth ||
michael@0:             height != storageHeight ||
michael@0:             internalformat != storageFormat)   // Discard mismatched storage
michael@0:         {
michael@0:             for (int i = 0; i < IMPLEMENTATION_MAX_TEXTURE_LEVELS; i++)
michael@0:             {
michael@0:                 for (int f = 0; f < 6; f++)
michael@0:                 {
michael@0:                     mImageArray[f][i]->markDirty();
michael@0:                 }
michael@0:             }
michael@0: 
michael@0:             delete mTexStorage;
michael@0:             mTexStorage = NULL;
michael@0: 
michael@0:             mDirtyImages = true;
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::copyImage(GLenum target, GLint level, GLenum format, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source)
michael@0: {
michael@0:     unsigned int faceindex = faceIndex(target);
michael@0:     GLint internalformat = gl::ConvertSizedInternalFormat(format, GL_UNSIGNED_BYTE);
michael@0:     redefineImage(faceindex, level, internalformat, width, height);
michael@0: 
michael@0:     if (!mImageArray[faceindex][level]->isRenderableFormat())
michael@0:     {
michael@0:         mImageArray[faceindex][level]->copy(0, 0, x, y, width, height, source);
michael@0:         mDirtyImages = true;
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         if (!mTexStorage || !mTexStorage->isRenderTarget())
michael@0:         {
michael@0:             convertToRenderTarget();
michael@0:         }
michael@0:         
michael@0:         mImageArray[faceindex][level]->markClean();
michael@0: 
michael@0:         ASSERT(width == height);
michael@0: 
michael@0:         if (width > 0 && level < levelCount())
michael@0:         {
michael@0:             gl::Rectangle sourceRect;
michael@0:             sourceRect.x = x;
michael@0:             sourceRect.width = width;
michael@0:             sourceRect.y = y;
michael@0:             sourceRect.height = height;
michael@0: 
michael@0:             mRenderer->copyImage(source, sourceRect, format, 0, 0, mTexStorage, target, level);
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::copySubImage(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height, Framebuffer *source)
michael@0: {
michael@0:     GLsizei size = mImageArray[faceIndex(target)][level]->getWidth();
michael@0: 
michael@0:     if (xoffset + width > size || yoffset + height > size)
michael@0:     {
michael@0:         return gl::error(GL_INVALID_VALUE);
michael@0:     }
michael@0: 
michael@0:     unsigned int faceindex = faceIndex(target);
michael@0: 
michael@0:     if (!mImageArray[faceindex][level]->isRenderableFormat() || (!mTexStorage && !isSamplerComplete()))
michael@0:     {
michael@0:         mImageArray[faceindex][level]->copy(0, 0, x, y, width, height, source);
michael@0:         mDirtyImages = true;
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         if (!mTexStorage || !mTexStorage->isRenderTarget())
michael@0:         {
michael@0:             convertToRenderTarget();
michael@0:         }
michael@0:         
michael@0:         updateTexture();
michael@0: 
michael@0:         if (level < levelCount())
michael@0:         {
michael@0:             gl::Rectangle sourceRect;
michael@0:             sourceRect.x = x;
michael@0:             sourceRect.width = width;
michael@0:             sourceRect.y = y;
michael@0:             sourceRect.height = height;
michael@0: 
michael@0:             mRenderer->copyImage(source, sourceRect, gl::ExtractFormat(mImageArray[0][0]->getInternalFormat()), 
michael@0:                                  xoffset, yoffset, mTexStorage, target, level);
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::storage(GLsizei levels, GLenum internalformat, GLsizei size)
michael@0: {
michael@0:     delete mTexStorage;
michael@0:     mTexStorage = new rx::TextureStorageInterfaceCube(mRenderer, levels, internalformat, mUsage, false, size);
michael@0:     mImmutable = true;
michael@0: 
michael@0:     for (int level = 0; level < levels; level++)
michael@0:     {
michael@0:         for (int face = 0; face < 6; face++)
michael@0:         {
michael@0:             mImageArray[face][level]->redefine(mRenderer, internalformat, size, size, true);
michael@0:             size = std::max(1, size >> 1);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     for (int level = levels; level < IMPLEMENTATION_MAX_TEXTURE_LEVELS; level++)
michael@0:     {
michael@0:         for (int face = 0; face < 6; face++)
michael@0:         {
michael@0:             mImageArray[face][level]->redefine(mRenderer, GL_NONE, 0, 0, true);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     if (mTexStorage->isManaged())
michael@0:     {
michael@0:         int levels = levelCount();
michael@0: 
michael@0:         for (int face = 0; face < 6; face++)
michael@0:         {
michael@0:             for (int level = 0; level < levels; level++)
michael@0:             {
michael@0:                 mImageArray[face][level]->setManagedSurface(mTexStorage, face, level);
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: void TextureCubeMap::generateMipmaps()
michael@0: {
michael@0:     if (!isCubeComplete())
michael@0:     {
michael@0:         return gl::error(GL_INVALID_OPERATION);
michael@0:     }
michael@0: 
michael@0:     if (!mRenderer->getNonPower2TextureSupport())
michael@0:     {
michael@0:         if (!isPow2(mImageArray[0][0]->getWidth()))
michael@0:         {
michael@0:             return gl::error(GL_INVALID_OPERATION);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     // Purge array levels 1 through q and reset them to represent the generated mipmap levels.
michael@0:     unsigned int q = log2(mImageArray[0][0]->getWidth());
michael@0:     for (unsigned int f = 0; f < 6; f++)
michael@0:     {
michael@0:         for (unsigned int i = 1; i <= q; i++)
michael@0:         {
michael@0:             redefineImage(f, i, mImageArray[f][0]->getInternalFormat(),
michael@0:                           std::max(mImageArray[f][0]->getWidth() >> i, 1),
michael@0:                           std::max(mImageArray[f][0]->getWidth() >> i, 1));
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     if (mTexStorage && mTexStorage->isRenderTarget())
michael@0:     {
michael@0:         for (unsigned int f = 0; f < 6; f++)
michael@0:         {
michael@0:             for (unsigned int i = 1; i <= q; i++)
michael@0:             {
michael@0:                 mTexStorage->generateMipmap(f, i);
michael@0: 
michael@0:                 mImageArray[f][i]->markClean();
michael@0:             }
michael@0:         }
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         for (unsigned int f = 0; f < 6; f++)
michael@0:         {
michael@0:             for (unsigned int i = 1; i <= q; i++)
michael@0:             {
michael@0:                 mRenderer->generateMipmap(mImageArray[f][i], mImageArray[f][i - 1]);
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: Renderbuffer *TextureCubeMap::getRenderbuffer(GLenum target)
michael@0: {
michael@0:     if (!IsCubemapTextureTarget(target))
michael@0:     {
michael@0:         return gl::error(GL_INVALID_OPERATION, (Renderbuffer *)NULL);
michael@0:     }
michael@0: 
michael@0:     unsigned int face = faceIndex(target);
michael@0: 
michael@0:     if (mFaceProxies[face] == NULL)
michael@0:     {
michael@0:         mFaceProxies[face] = new Renderbuffer(mRenderer, id(), new RenderbufferTextureCubeMap(this, target));
michael@0:     }
michael@0: 
michael@0:     return mFaceProxies[face];
michael@0: }
michael@0: 
michael@0: rx::RenderTarget *TextureCubeMap::getRenderTarget(GLenum target)
michael@0: {
michael@0:     ASSERT(IsCubemapTextureTarget(target));
michael@0: 
michael@0:     // ensure the underlying texture is created
michael@0:     if (getStorage(true) == NULL)
michael@0:     {
michael@0:         return NULL;
michael@0:     }
michael@0: 
michael@0:     updateTexture();
michael@0:     
michael@0:     return mTexStorage->getRenderTarget(target);
michael@0: }
michael@0: 
michael@0: int TextureCubeMap::levelCount()
michael@0: {
michael@0:     return mTexStorage ? mTexStorage->levelCount() - getLodOffset() : 0;
michael@0: }
michael@0: 
michael@0: rx::TextureStorageInterface *TextureCubeMap::getStorage(bool renderTarget)
michael@0: {
michael@0:     if (!mTexStorage || (renderTarget && !mTexStorage->isRenderTarget()))
michael@0:     {
michael@0:         if (renderTarget)
michael@0:         {
michael@0:             convertToRenderTarget();
michael@0:         }
michael@0:         else
michael@0:         {
michael@0:             createTexture();
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     return mTexStorage;
michael@0: }
michael@0: 
michael@0: }