1 /* 2 ----------------------------------------------------------------------------- 3 This source file is part of OGRE 4 (Object-oriented Graphics Rendering Engine) 5 For the latest info, see http://www.ogre3d.org/ 6 7 Copyright (c) 2008 Renato Araujo Oliveira Filho <renatox@gmail.com> 8 Copyright (c) 2000-2013 Torus Knot Software Ltd 9 10 Permission is hereby granted, free of charge, to any person obtaining a copy 11 of this software and associated documentation files (the "Software"), to deal 12 in the Software without restriction, including without limitation the rights 13 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 14 copies of the Software, and to permit persons to whom the Software is 15 furnished to do so, subject to the following conditions: 16 17 The above copyright notice and this permission notice shall be included in 18 all copies or substantial portions of the Software. 19 20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 23 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 24 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 25 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 26 THE SOFTWARE. 27 ----------------------------------------------------------------------------- 28 */ 29 30 #include "OgreGLESTextureManager.h" 31 #include "OgreGLESRenderTexture.h" 32 #include "OgreRoot.h" 33 #include "OgreRenderSystem.h" 34 35 36 namespace Ogre { GLESTextureManager(GLESSupport & support)37 GLESTextureManager::GLESTextureManager(GLESSupport& support) 38 : TextureManager(), mGLSupport(support), mWarningTextureID(0) 39 { 40 // Register with group manager 41 ResourceGroupManager::getSingleton()._registerResourceManager(mResourceType, this); 42 } 43 ~GLESTextureManager()44 GLESTextureManager::~GLESTextureManager() 45 { 46 // Unregister with group manager 47 ResourceGroupManager::getSingleton()._unregisterResourceManager(mResourceType); 48 // Delete warning texture 49 glDeleteTextures(1, &mWarningTextureID); 50 GL_CHECK_ERROR; 51 } 52 createImpl(const String & name,ResourceHandle handle,const String & group,bool isManual,ManualResourceLoader * loader,const NameValuePairList * createParams)53 Resource* GLESTextureManager::createImpl(const String& name, ResourceHandle handle, 54 const String& group, bool isManual, 55 ManualResourceLoader* loader, 56 const NameValuePairList* createParams) 57 { 58 return OGRE_NEW GLESTexture(this, name, handle, group, isManual, loader, mGLSupport); 59 } 60 61 //----------------------------------------------------------------------------- createWarningTexture()62 void GLESTextureManager::createWarningTexture() 63 { 64 // Generate warning texture 65 size_t width = 8; 66 size_t height = 8; 67 68 uint16* data = new uint16[width * height]; 69 70 // Yellow/black stripes 71 for(size_t y = 0; y < height; ++y) 72 { 73 for(size_t x = 0; x < width; ++x) 74 { 75 data[y * width + x] = (((x + y) % 8) < 4) ? 0x0000 : 0xFFF0; 76 } 77 } 78 79 GL_CHECK_ERROR; 80 // Create GL resource 81 glGenTextures(1, &mWarningTextureID); 82 GL_CHECK_ERROR; 83 glBindTexture(GL_TEXTURE_2D, mWarningTextureID); 84 GL_CHECK_ERROR; 85 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, 86 GL_UNSIGNED_SHORT_5_6_5, (void*)data); 87 GL_CHECK_ERROR; 88 // Free memory 89 delete [] data; 90 } 91 getNativeFormat(TextureType ttype,PixelFormat format,int usage)92 PixelFormat GLESTextureManager::getNativeFormat(TextureType ttype, PixelFormat format, int usage) 93 { 94 // Adjust requested parameters to capabilities 95 const RenderSystemCapabilities *caps = Root::getSingleton().getRenderSystem()->getCapabilities(); 96 97 // Check compressed texture support 98 // if a compressed format not supported, revert to PF_A8R8G8B8 99 if (PixelUtil::isCompressed(format) && 100 !caps->hasCapability(RSC_TEXTURE_COMPRESSION_DXT) && 101 !caps->hasCapability(RSC_TEXTURE_COMPRESSION_PVRTC) && 102 !caps->hasCapability(RSC_TEXTURE_COMPRESSION_ATC) && 103 !caps->hasCapability(RSC_TEXTURE_COMPRESSION_ETC1)) 104 { 105 return PF_A8R8G8B8; 106 } 107 // if floating point textures not supported, revert to PF_A8R8G8B8 108 if (PixelUtil::isFloatingPoint(format) && 109 !caps->hasCapability(RSC_TEXTURE_FLOAT)) 110 { 111 return PF_A8R8G8B8; 112 } 113 114 // Check if this is a valid rendertarget format 115 if (usage & TU_RENDERTARGET) 116 { 117 /// Get closest supported alternative 118 /// If mFormat is supported it's returned 119 return GLESRTTManager::getSingleton().getSupportedAlternative(format); 120 } 121 122 // Supported 123 return format; 124 } 125 isHardwareFilteringSupported(TextureType ttype,PixelFormat format,int usage,bool preciseFormatOnly)126 bool GLESTextureManager::isHardwareFilteringSupported(TextureType ttype, PixelFormat format, int usage, 127 bool preciseFormatOnly) 128 { 129 if (format == PF_UNKNOWN) 130 { 131 return false; 132 } 133 134 // Check native format 135 PixelFormat nativeFormat = getNativeFormat(ttype, format, usage); 136 if (preciseFormatOnly && format != nativeFormat) 137 { 138 return false; 139 } 140 141 // Assume non-floating point is supported always 142 if (!PixelUtil::isFloatingPoint(nativeFormat)) 143 { 144 return true; 145 } 146 147 return false; 148 } 149 } 150