framework/platform/win32/tcuWGLContextFactory.cpp

   1 /*-------------------------------------------------------------------------
   2  * drawElements Quality Program Tester Core
   3  * ----------------------------------------
   4  *
   5  * Copyright 2014 The Android Open Source Project
   6  *
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  *
  19  *//*!
  20  * \file
  21  * \brief WGL GL context factory.
  22  *//*--------------------------------------------------------------------*/
  23
  24 #include "tcuWGLContextFactory.hpp"
  25
  26 #include "gluRenderConfig.hpp"
  27 #include "tcuRenderTarget.hpp"
  28 #include "tcuWin32Window.hpp"
  29 #include "glwFunctions.hpp"
  30 #include "glwInitFunctions.hpp"
  31 #include "deString.h"
  32
  33 using std::vector;
  34
  35 namespace tcu
  36 {
  37 namespace wgl
  38 {
  39 namespace
  40 {
  41
  42 enum
  43 {
  44         DEFAULT_WINDOW_WIDTH    = 400,
  45         DEFAULT_WINDOW_HEIGHT   = 300
  46 };
  47
  48 class WGLFunctionLoader : public glw::FunctionLoader
  49 {
  50 public:
  51         WGLFunctionLoader (const wgl::Context& context)
  52                 : m_context(context)
  53         {
  54         }
  55
  56         glw::GenericFuncType get (const char* name) const
  57         {
  58                 return (glw::GenericFuncType)m_context.getGLFunction(name);
  59         }
  60
  61 private:
  62         const wgl::Context& m_context;
  63 };
  64
  65 class WGLContext : public glu::RenderContext
  66 {
  67 public:
  68                                                                         WGLContext                      (HINSTANCE instance, const wgl::Core& wglCore, const glu::RenderConfig& config);
  69                                                                         ~WGLContext                     (void);
  70
  71         glu::ContextType                                getType                         (void) const    { return m_contextType;                 }
  72         const RenderTarget&                             getRenderTarget         (void) const    { return m_renderTarget;                }
  73         void                                                    postIterate                     (void);
  74         const glw::Functions&                   getFunctions            (void) const    { return m_functions;                   }
  75
  76 private:
  77                                                                         WGLContext                      (const WGLContext& other);
  78         WGLContext&                                             operator=                       (const WGLContext& other);
  79
  80         glu::ContextType                                m_contextType;
  81
  82         win32::Window                                   m_window;
  83         wgl::Context*                                   m_context;
  84
  85         tcu::RenderTarget                               m_renderTarget;
  86         glw::Functions                                  m_functions;
  87 };
  88
  89 WGLContext::WGLContext (HINSTANCE instance, const wgl::Core& wglCore, const glu::RenderConfig& config)
  90         : m_contextType (config.type)
  91         , m_window              (instance,
  92                                          config.width   != glu::RenderConfig::DONT_CARE ? config.width  : DEFAULT_WINDOW_WIDTH,
  93                                          config.height  != glu::RenderConfig::DONT_CARE ? config.height : DEFAULT_WINDOW_HEIGHT)
  94         , m_context             (DE_NULL)
  95 {
  96         if (config.surfaceType != glu::RenderConfig::SURFACETYPE_WINDOW &&
  97                 config.surfaceType != glu::RenderConfig::SURFACETYPE_DONT_CARE)
  98                 throw NotSupportedError("Unsupported surface type");
  99
 100         HDC             deviceCtx       = m_window.getDeviceContext();
 101         int             pixelFormat     = 0;
 102
 103         if (config.id != glu::RenderConfig::DONT_CARE)
 104                 pixelFormat = config.id;
 105         else
 106                 pixelFormat = wgl::choosePixelFormat(wglCore, deviceCtx, config);
 107
 108         if (pixelFormat < 0)
 109                 throw NotSupportedError("Compatible WGL pixel format not found");
 110
 111         m_context = new wgl::Context(&wglCore, deviceCtx, config.type, pixelFormat);
 112
 113         try
 114         {
 115                 // Describe selected config & get render target props.
 116                 const wgl::PixelFormatInfo      info    = wglCore.getPixelFormatInfo(deviceCtx, pixelFormat);
 117                 const IVec2                                     size    = m_window.getSize();
 118
 119                 m_renderTarget = tcu::RenderTarget(size.x(), size.y(),
 120                                                                                    tcu::PixelFormat(info.redBits, info.greenBits, info.blueBits, info.alphaBits),
 121                                                                                    info.depthBits, info.stencilBits,
 122                                                                                    info.sampleBuffers ? info.samples : 0);
 123
 124                 // Load functions
 125                 {
 126                         WGLFunctionLoader funcLoader(*m_context);
 127                         glu::initFunctions(&m_functions, &funcLoader, config.type.getAPI());
 128                 }
 129
 130                 if (config.windowVisibility != glu::RenderConfig::VISIBILITY_VISIBLE &&
 131                         config.windowVisibility != glu::RenderConfig::VISIBILITY_HIDDEN)
 132                         throw NotSupportedError("Unsupported window visibility mode");
 133
 134                 m_window.setVisible(config.windowVisibility != glu::RenderConfig::VISIBILITY_HIDDEN);
 135         }
 136         catch (...)
 137         {
 138                 delete m_context;
 139                 throw;
 140         }
 141 }
 142
 143 WGLContext::~WGLContext (void)
 144 {
 145         delete m_context;
 146 }
 147
 148 void WGLContext::postIterate (void)
 149 {
 150         m_context->swapBuffers();
 151         m_window.processEvents();
 152 }
 153
 154 } // anonymous
 155
 156 ContextFactory::ContextFactory (HINSTANCE instance)
 157         : glu::ContextFactory   ("wgl", "Windows WGL OpenGL context")
 158         , m_instance                    (instance)
 159         , m_wglCore                             (instance)
 160 {
 161 }
 162
 163 glu::RenderContext* ContextFactory::createContext (const glu::RenderConfig& config, const tcu::CommandLine&) const
 164 {
 165         return new WGLContext(m_instance, m_wglCore, config);
 166 }
 167
 168 } // wgl
 169 } // tcu