//--------------------------------------------------------------------------------------
// Name: Render()
// Desc:
//--------------------------------------------------------------------------------------
VOID CSample::Render()
{
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
RenderShadowMapToFBO();
RenderLightingToFBO();
RenderBlendedLightingAndShadowMap();
if( m_bShowShadowMap )
{
// must turn off texture comparison, otherwise rendering the texture
// to screen will be wrong
glBindTexture( GL_TEXTURE_2D, m_hShadowMapTexId );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_NONE);
glBindTexture( GL_TEXTURE_2D, 0 );
glBindFramebuffer( GL_FRAMEBUFFER, 0 );
FrmRenderTextureToScreen_GLES( 0, 0, m_nShadowMapFBOTextureWidth, m_nShadowMapFBOTextureHeight, m_hShadowMapTexId,
m_hOverlayShader, m_hOverlayScreenSizeLoc );
// Turn comparison back on for hardware shadow map comparison
glBindTexture( GL_TEXTURE_2D, m_hShadowMapTexId );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_REF_TO_TEXTURE);
glBindTexture( GL_TEXTURE_2D, 0 );
}
// Update the timer
m_Timer.MarkFrame();
// Render the user interface
m_UserInterface.Render( m_Timer.GetFrameRate() );
}
//--------------------------------------------------------------------------------------
// Name: FrmRenderTextureToScreen()
// Desc: Helper function to render a texture in screenspace.
//--------------------------------------------------------------------------------------
VOID FrmRenderTextureToScreen_GLES( FLOAT32 sx, FLOAT32 sy, FLOAT32 fScale,
CFrmTexture* pTexture,
INT32 hShaderProgram, INT32 hScreenSizeLoc )
{
FrmRenderTextureToScreen_GLES( sx, sy,
fScale * pTexture->m_nWidth,
fScale * pTexture->m_nHeight,
pTexture->m_hTextureHandle,
hShaderProgram, hScreenSizeLoc );
}