- // switch rendering to adaptor provided (default) buffer
- mImpl->context.BindFramebuffer( GL_FRAMEBUFFER, 0 );
-
- mImpl->context.Viewport( mImpl->defaultSurfaceRect.x,
- mImpl->defaultSurfaceRect.y,
- mImpl->defaultSurfaceRect.width,
- mImpl->defaultSurfaceRect.height );
-
- mImpl->context.ClearColor( mImpl->backgroundColor.r,
- mImpl->backgroundColor.g,
- mImpl->backgroundColor.b,
- mImpl->backgroundColor.a );
-
- mImpl->context.ClearStencil( 0 );
-
- // Clear the entire color, depth and stencil buffers for the default framebuffer.
- // It is important to clear all 3 buffers, for performance on deferred renderers like Mali
- // e.g. previously when the depth & stencil buffers were NOT cleared, it caused the DDK to exceed a "vertex count limit",
- // and then stall. That problem is only noticeable when rendering a large number of vertices per frame.
- mImpl->context.SetScissorTest( false );
- mImpl->context.ColorMask( true );
- mImpl->context.DepthMask( true );
- mImpl->context.StencilMask( 0xFF ); // 8 bit stencil mask, all 1's
- mImpl->context.Clear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT, Context::FORCE_CLEAR );
-
- // reset the program matrices for all programs once per frame
- // this ensures we will set view and projection matrix once per program per camera
- // @todo move programs out of context onto a program controller and let that handle this
- mImpl->programController.ResetProgramMatrices();
-
- // if we don't have default shader, no point doing the render calls
- if( mImpl->defaultShader )
- {
- size_t count = mImpl->instructions.Count( mImpl->renderBufferIndex );
- for ( size_t i = 0; i < count; ++i )
- {
- RenderInstruction& instruction = mImpl->instructions.At( mImpl->renderBufferIndex, i );