Changeset 245 for trunk/src/gl/gl_context.cc

Timestamp:

05/27/14 16:26:53 (11 years ago)

Author:

epyon

Message:

• gl library wgl support
• gl context and window adoption

File:

• trunk/src/gl/gl_context.cc (modified) (4 diffs)

trunk/src/gl/gl_context.cc

@@ -362 +362 @@
 
 
-gl_context::gl_context( device* a_device, void* a_win_handle )
-        : context( a_device ), m_handle( nullptr )
+gl_context::gl_context( device* a_device )
+        : context( a_device )
+{
+}
+
+
+nv::gl_context::~gl_context()
+{
+}
+
+
+void gl_context::draw( primitive prim, const render_state& rs, program* p, vertex_array* va, size_t count )
+{
+        apply_render_state( rs );
+        if ( count > 0 )
+        {
+                p->bind();
+                va->bind();
+                if ( va->has_index_buffer() )
+                {
+                        glDrawElements( primitive_to_enum(prim), static_cast<GLsizei>( count ), datatype_to_gl_enum( va->get_index_buffer_type() ), 0 );
+                }
+                else
+                {
+                        glDrawArrays( primitive_to_enum(prim), 0, static_cast<GLsizei>( count ) );
+                }
+                va->unbind();
+                p->unbind();
+        }
+}
+
+nv::sdl_gl_context::sdl_gl_context( device* a_device, void* a_sdl_win_handle )
+        : gl_context( a_device ), m_handle( nullptr )
 {
 #if NV_SDL_VERSION == NV_SDL_20
-        m_handle = SDL_GL_CreateContext( static_cast<SDL_Window*>( a_win_handle ) );
+        m_handle = SDL_GL_CreateContext( static_cast<SDL_Window*>( a_sdl_win_handle ) );
 
         if ( m_handle == 0 )
@@ -384 +415 @@
         NV_LOG( LOG_INFO, "OpenGL GLSL Version : " << glGetString(GL_SHADING_LANGUAGE_VERSION) );
 #if NV_SDL_VERSION == NV_SDL_20
-//      SDL_GL_SetSwapInterval(1);
+        //      SDL_GL_SetSwapInterval(1);
 #endif
 
@@ -393 +424 @@
 }
 
-
-nv::gl_context::~gl_context()
+nv::sdl_gl_context::~sdl_gl_context()
 {
 #if NV_SDL_VERSION == NV_SDL_20
@@ -401 +431 @@
 }
 
-
-void gl_context::draw( primitive prim, const render_state& rs, program* p, vertex_array* va, size_t count )
-{
-        apply_render_state( rs );
-        if ( count > 0 )
-        {
-                p->bind();
-                va->bind();
-                if ( va->has_index_buffer() )
-                {
-                        glDrawElements( primitive_to_enum(prim), static_cast<GLsizei>( count ), datatype_to_gl_enum( va->get_index_buffer_type() ), 0 );
-                }
-                else
-                {
-                        glDrawArrays( primitive_to_enum(prim), 0, static_cast<GLsizei>( count ) );
-                }
-                va->unbind();
-                p->unbind();
-        }
-}
+nv::native_gl_context::native_gl_context( device* a_device, void* a_native_win_handle )
+        : gl_context( a_device ), m_handle( nullptr )
+{
+#if NV_PLATFORM == NV_WINDOWS
+
+// TODO: error checking
+        HDC hdc = (HDC)a_native_win_handle;
+
+        const int wgl_attrib_list[] =
+        {
+                WGL_DRAW_TO_WINDOW_ARB, GL_TRUE,
+                WGL_SUPPORT_OPENGL_ARB, GL_TRUE,
+                WGL_ACCELERATION_ARB,   WGL_FULL_ACCELERATION_ARB,
+                WGL_DOUBLE_BUFFER_ARB,  GL_TRUE,
+                WGL_PIXEL_TYPE_ARB,     WGL_TYPE_RGBA_ARB,
+                WGL_COLOR_BITS_ARB,     32,
+                WGL_DEPTH_BITS_ARB,     24,
+                WGL_STENCIL_BITS_ARB,   8,
+                0, 0  //End
+        };
+
+        unsigned int num_formats;
+        int pixel_format;
+        PIXELFORMATDESCRIPTOR pfd;
+
+        if ( FALSE == wglChoosePixelFormatARB(hdc, wgl_attrib_list, NULL, 1, &pixel_format, &num_formats) )
+        {
+                return;
+        }
+
+        if ( FALSE == SetPixelFormat(hdc, pixel_format, &pfd) )
+        {
+                //int err = GetLastError();
+                return;
+        }
+
+        int attribs[] =
+        {
+                WGL_CONTEXT_MAJOR_VERSION_ARB,   2,
+                WGL_CONTEXT_MINOR_VERSION_ARB,   1,
+                WGL_CONTEXT_PROFILE_MASK_ARB,  WGL_CONTEXT_CORE_PROFILE_BIT_ARB, 
+                //WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB,
+                0, 0  //End
+        };
+
+        HGLRC handle;
+        if ( 0 == (handle = wglCreateContextAttribsARB(hdc, 0, attribs) ) )
+        {
+                return;
+        }
+
+        if ( FALSE == dynwglMakeCurrent( hdc, handle ) )
+        {
+                return;
+        }     
+
+        m_handle = (void*)handle;
+#else
+        NV_ASSERT( false, "Native GL context not implemented for this platform!" );
+#endif
+        force_apply_render_state( m_render_state );
+}
+
+nv::native_gl_context::~native_gl_context()
+{
+#if NV_PLATFORM == NV_WINDOWS
+        dynwglDeleteContext( (HGLRC)m_handle );
+#endif
+}