1 #ifndef _GLURENDERCONTEXT_HPP 2 #define _GLURENDERCONTEXT_HPP 3 /*------------------------------------------------------------------------- 4 * drawElements Quality Program OpenGL ES Utilities 5 * ------------------------------------------------ 6 * 7 * Copyright 2014 The Android Open Source Project 8 * 9 * Licensed under the Apache License, Version 2.0 (the "License"); 10 * you may not use this file except in compliance with the License. 11 * You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 * 21 *//*! 22 * \file 23 * \brief OpenGL ES rendering context. 24 *//*--------------------------------------------------------------------*/ 25 26 #include "tcuDefs.hpp" 27 28 namespace tcu 29 { 30 class CommandLine; 31 class Platform; 32 class RenderTarget; 33 } 34 35 namespace glw 36 { 37 class Functions; 38 class FunctionLoader; 39 } 40 41 namespace glu 42 { 43 44 class ContextType; 45 class ContextInfo; 46 47 enum Profile 48 { 49 PROFILE_ES = 0, //!< OpenGL ES 50 PROFILE_CORE, //!< OpenGL Core Profile 51 PROFILE_COMPATIBILITY, //!< OpenGL Compatibility Profile 52 53 PROFILE_LAST 54 }; 55 56 enum ContextFlags 57 { 58 CONTEXT_ROBUST = (1<<0), //!< Robust context 59 CONTEXT_DEBUG = (1<<1), //!< Debug context 60 CONTEXT_FORWARD_COMPATIBLE = (1<<2) //!< Forward-compatible context 61 }; 62 63 inline ContextFlags operator| (ContextFlags a, ContextFlags b) { return ContextFlags((deUint32)a|(deUint32)b); } 64 inline ContextFlags operator& (ContextFlags a, ContextFlags b) { return ContextFlags((deUint32)a&(deUint32)b); } 65 inline ContextFlags operator~ (ContextFlags a) { return ContextFlags(~(deUint32)a); } 66 67 /*--------------------------------------------------------------------*//*! 68 * \brief Rendering API version and profile. 69 *//*--------------------------------------------------------------------*/ 70 class ApiType 71 { 72 public: 73 ApiType (void) : m_bits(pack(0, 0, PROFILE_LAST)) {} 74 ApiType (int major, int minor, Profile profile) : m_bits(pack(major, minor, profile)) {} 75 76 int getMajorVersion (void) const { return int((m_bits>>MAJOR_SHIFT) & ((1u<<MAJOR_BITS)-1u)); } 77 int getMinorVersion (void) const { return int((m_bits>>MINOR_SHIFT) & ((1u<<MINOR_BITS)-1u)); } 78 Profile getProfile (void) const { return Profile((m_bits>>PROFILE_SHIFT) & ((1u<<PROFILE_BITS)-1u)); } 79 80 bool operator== (ApiType other) const { return m_bits == other.m_bits; } 81 bool operator!= (ApiType other) const { return m_bits != other.m_bits; } 82 83 // Shorthands 84 static ApiType es (int major, int minor) { return ApiType(major, minor, PROFILE_ES); } 85 static ApiType core (int major, int minor) { return ApiType(major, minor, PROFILE_CORE); } 86 static ApiType compatibility (int major, int minor) { return ApiType(major, minor, PROFILE_COMPATIBILITY); } 87 88 protected: 89 ApiType (deUint32 bits) : m_bits(bits) {} 90 static ApiType fromBits (deUint32 bits) { return ApiType(bits); } 91 92 static deUint32 pack (int major, int minor, Profile profile); 93 94 deUint32 m_bits; 95 96 enum 97 { 98 MAJOR_BITS = 4, 99 MINOR_BITS = 4, 100 PROFILE_BITS = 2, 101 TOTAL_API_BITS = MAJOR_BITS+MINOR_BITS+PROFILE_BITS, 102 103 MAJOR_SHIFT = 0, 104 MINOR_SHIFT = MAJOR_SHIFT+MAJOR_BITS, 105 PROFILE_SHIFT = MINOR_SHIFT+MINOR_BITS 106 }; 107 }; 108 109 inline deUint32 ApiType::pack (int major, int minor, Profile profile) 110 { 111 deUint32 bits = 0; 112 113 DE_ASSERT((deUint32(major) & ~((1<<MAJOR_BITS)-1)) == 0); 114 DE_ASSERT((deUint32(minor) & ~((1<<MINOR_BITS)-1)) == 0); 115 DE_ASSERT((deUint32(profile) & ~((1<<PROFILE_BITS)-1)) == 0); 116 117 bits |= deUint32(major) << MAJOR_SHIFT; 118 bits |= deUint32(minor) << MINOR_SHIFT; 119 bits |= deUint32(profile) << PROFILE_SHIFT; 120 121 return bits; 122 } 123 124 /*--------------------------------------------------------------------*//*! 125 * \brief Rendering context type. 126 * 127 * ContextType differs from API type by adding context flags. They are 128 * crucial in for example determining when GL core context supports 129 * certain API version (forward-compatible bit). 130 * 131 * \note You should NEVER compare ContextTypes against each other, as 132 * you most likely don't want to take flags into account. For example 133 * the test code almost certainly doesn't want to check that you have 134 * EXACTLY ES3.1 context with debug, but without for example robustness. 135 *//*--------------------------------------------------------------------*/ 136 class ContextType : private ApiType 137 { 138 public: 139 ContextType (void) {} 140 ContextType (int major, int minor, Profile profile, ContextFlags flags = ContextFlags(0)); 141 explicit ContextType (ApiType apiType, ContextFlags flags = ContextFlags(0)); 142 143 ApiType getAPI (void) const { return ApiType::fromBits(m_bits & ((1u<<TOTAL_API_BITS)-1u)); } 144 ContextFlags getFlags (void) const { return ContextFlags((m_bits>>FLAGS_SHIFT) & ((1u<<FLAGS_BITS)-1u)); } 145 146 using ApiType::getMajorVersion; 147 using ApiType::getMinorVersion; 148 using ApiType::getProfile; 149 150 protected: 151 static deUint32 pack (deUint32 apiBits, ContextFlags flags); 152 153 enum 154 { 155 FLAGS_BITS = 3, 156 TOTAL_CONTEXT_BITS = TOTAL_API_BITS+FLAGS_BITS, 157 FLAGS_SHIFT = TOTAL_API_BITS 158 }; 159 }; 160 161 inline ContextType::ContextType (int major, int minor, Profile profile, ContextFlags flags) 162 : ApiType(major, minor, profile) 163 { 164 m_bits = pack(m_bits, flags); 165 } 166 167 inline ContextType::ContextType (ApiType apiType, ContextFlags flags) 168 : ApiType(apiType) 169 { 170 m_bits = pack(m_bits, flags); 171 } 172 173 inline deUint32 ContextType::pack (deUint32 apiBits, ContextFlags flags) 174 { 175 deUint32 bits = apiBits; 176 177 DE_ASSERT((deUint32(flags) & ~((1<<FLAGS_BITS)-1)) == 0); 178 bits |= deUint32(flags) << FLAGS_SHIFT; 179 180 return bits; 181 } 182 183 inline bool isContextTypeES (ContextType type) { return type.getAPI().getProfile() == PROFILE_ES; } 184 inline bool isContextTypeGLCore (ContextType type) { return type.getAPI().getProfile() == PROFILE_CORE; } 185 inline bool isContextTypeGLCompatibility(ContextType type) { return type.getAPI().getProfile() == PROFILE_COMPATIBILITY; } 186 bool contextSupports (ContextType ctxType, ApiType requiredApiType); 187 188 /*--------------------------------------------------------------------*//*! 189 * \brief Rendering context abstraction. 190 *//*--------------------------------------------------------------------*/ 191 class RenderContext 192 { 193 public: 194 RenderContext (void) {} 195 virtual ~RenderContext (void) {} 196 197 //! Get context type. Must match to type given to ContextFactory::createContext(). 198 virtual ContextType getType (void) const = DE_NULL; 199 200 //! Get GL function table. Should be filled with all core entry points for context type. 201 virtual const glw::Functions& getFunctions (void) const = DE_NULL; 202 203 //! Get render target information. 204 virtual const tcu::RenderTarget& getRenderTarget (void) const = DE_NULL; 205 206 //! Do post-render actions (swap buffers for example). 207 virtual void postIterate (void) = DE_NULL; 208 209 //! Get default framebuffer. 210 virtual deUint32 getDefaultFramebuffer (void) const { return 0; } 211 212 private: 213 RenderContext (const RenderContext& other); // Not allowed! 214 RenderContext& operator= (const RenderContext& other); // Not allowed! 215 }; 216 217 // Utilities 218 219 RenderContext* createDefaultRenderContext (tcu::Platform& platform, const tcu::CommandLine& cmdLine, ApiType apiType); 220 221 void initCoreFunctions (glw::Functions* dst, const glw::FunctionLoader* loader, ApiType apiType); 222 void initExtensionFunctions (glw::Functions* dst, const glw::FunctionLoader* loader, ApiType apiType, int numExtensions, const char* const* extensions); 223 224 // \note initFunctions() and initExtensionFunctions() without explicit extension list 225 // use glGetString* to query list of extensions, so it needs current GL context. 226 void initFunctions (glw::Functions* dst, const glw::FunctionLoader* loader, ApiType apiType); 227 void initExtensionFunctions (glw::Functions* dst, const glw::FunctionLoader* loader, ApiType apiType); 228 229 } // glu 230 231 #endif // _GLURENDERCONTEXT_HPP 232
