void CGlowObjectManager::RenderGlowModels( const CViewSetup *pSetup, int nSplitScreenSlot, CMatRenderContextPtr &pRenderContext )
{
//==========================================================================================//
// This renders solid pixels with the correct coloring for each object that needs the glow. //
// After this function returns, this image will then be blurred and added into the frame //
// buffer with the objects stenciled out. //
//==========================================================================================//
pRenderContext->PushRenderTargetAndViewport();
// Save modulation color and blend
Vector vOrigColor;
render->GetColorModulation( vOrigColor.Base() );
float flOrigBlend = render->GetBlend();
ITexture *pRtFullFrame = materials->FindTexture( FULL_FRAME_TEXTURE, TEXTURE_GROUP_RENDER_TARGET );
SetRenderTargetAndViewPort( pRtFullFrame, pSetup->width, pSetup->height );
pRenderContext->ClearColor3ub( 0, 0, 0 );
pRenderContext->ClearBuffers( true, false, false );
// Set override material for glow color
IMaterial *pMatGlowColor = NULL;
pMatGlowColor = materials->FindMaterial( "dev/glow_color", TEXTURE_GROUP_OTHER, true );
// Draw the objects //
for ( int i = 0; i < m_GlowObjectDefinitions.Count(); ++ i )
{
if ( m_GlowObjectDefinitions[i].IsUnused() || !m_GlowObjectDefinitions[i].ShouldDraw( nSplitScreenSlot ) )
continue;
g_pStudioRender->ForcedMaterialOverride( pMatGlowColor );
if ( m_GlowObjectDefinitions[i].m_bFullBloomRender )
{
// Disabled because stencil test on off-screen buffers doesn't work with MSAA on.
// Also, the normal model render does not seem to work on the off-screen buffer
//g_pStudioRender->ForcedMaterialOverride( NULL );
// ShaderStencilState_t stencilState;
// stencilState.m_bEnable = true;
// stencilState.m_nReferenceValue = m_GlowObjectDefinitions[i].m_nFullBloomStencilTestValue;
// stencilState.m_nTestMask = 0xFF;
// stencilState.m_CompareFunc = SHADER_STENCILFUNC_EQUAL;
// stencilState.m_PassOp = SHADER_STENCILOP_KEEP;
// stencilState.m_FailOp = SHADER_STENCILOP_KEEP;
// stencilState.m_ZFailOp = SHADER_STENCILOP_KEEP;
//
// pRenderContext->SetStencilState( stencilState );
}
else
{
// Disabled because stencil test on off-screen buffers doesn't work with MSAA on
// Most features still work, but some (e.g. partial occlusion) don't
// ShaderStencilState_t stencilState;
// stencilState.m_bEnable = true;
// stencilState.m_nReferenceValue = 1;
// stencilState.m_nTestMask = 0x1;
// stencilState.m_CompareFunc = SHADER_STENCILFUNC_EQUAL;
// stencilState.m_PassOp = SHADER_STENCILOP_KEEP;
// stencilState.m_FailOp = SHADER_STENCILOP_KEEP;
// stencilState.m_ZFailOp = SHADER_STENCILOP_KEEP;
//
// pRenderContext->SetStencilState( stencilState );
}
render->SetBlend( m_GlowObjectDefinitions[i].m_flGlowAlpha );
Vector vGlowColor = m_GlowObjectDefinitions[i].m_vGlowColor * m_GlowObjectDefinitions[i].m_flGlowAlpha;
render->SetColorModulation( &vGlowColor[0] ); // This only sets rgb, not alpha
m_GlowObjectDefinitions[i].DrawModel();
}
g_pStudioRender->ForcedMaterialOverride( NULL );
render->SetColorModulation( vOrigColor.Base() );
render->SetBlend( flOrigBlend );
ShaderStencilState_t stencilStateDisable;
stencilStateDisable.m_bEnable = false;
pRenderContext->SetStencilState( stencilStateDisable );
pRenderContext->PopRenderTargetAndViewport();
}
void CGlowObjectManager::ApplyEntityGlowEffects( const CViewSetup *pSetup, int nSplitScreenSlot, CMatRenderContextPtr &pRenderContext, float flBloomScale, int x, int y, int w, int h )
{
static bool s_bFirstPass = true;
//=======================================================//
// Render objects into stencil buffer //
//=======================================================//
// Set override shader to the same simple shader we use to render the glow models
IMaterial *pMatGlowColor = materials->FindMaterial( "dev/glow_color", TEXTURE_GROUP_OTHER, true );
g_pStudioRender->ForcedMaterialOverride( pMatGlowColor );
ShaderStencilState_t stencilStateDisable;
stencilStateDisable.m_bEnable = false;
float flSavedBlend = render->GetBlend();
// Set alpha to 0 so we don't touch any color pixels
render->SetBlend( 0.0f );
pRenderContext->OverrideDepthEnable( true, false );
RenderableInstance_t instance;
instance.m_nAlpha = 255;
int iNumGlowObjects = 0;
for ( int i = 0; i < m_GlowObjectDefinitions.Count(); ++ i )
{
if ( m_GlowObjectDefinitions[i].IsUnused() || !m_GlowObjectDefinitions[i].ShouldDraw( nSplitScreenSlot ) )
continue;
// Full bloom rendered objects should not be stenciled out here
if ( m_GlowObjectDefinitions[i].m_bFullBloomRender )
{
++ iNumGlowObjects;
continue;
}
if ( m_GlowObjectDefinitions[i].m_bRenderWhenOccluded || m_GlowObjectDefinitions[i].m_bRenderWhenUnoccluded )
{
if ( m_GlowObjectDefinitions[i].m_bRenderWhenOccluded && m_GlowObjectDefinitions[i].m_bRenderWhenUnoccluded )
{
ShaderStencilState_t stencilState;
stencilState.m_bEnable = true;
stencilState.m_nReferenceValue = 1;
stencilState.m_CompareFunc = SHADER_STENCILFUNC_ALWAYS;
stencilState.m_PassOp = SHADER_STENCILOP_SET_TO_REFERENCE;
stencilState.m_FailOp = SHADER_STENCILOP_KEEP;
stencilState.m_ZFailOp = SHADER_STENCILOP_SET_TO_REFERENCE;
pRenderContext->SetStencilState( stencilState );
m_GlowObjectDefinitions[i].DrawModel();
}
else if ( m_GlowObjectDefinitions[i].m_bRenderWhenOccluded )
{
ShaderStencilState_t stencilState;
stencilState.m_bEnable = true;
stencilState.m_nReferenceValue = 1;
stencilState.m_CompareFunc = SHADER_STENCILFUNC_ALWAYS;
stencilState.m_PassOp = SHADER_STENCILOP_KEEP;
stencilState.m_FailOp = SHADER_STENCILOP_KEEP;
stencilState.m_ZFailOp = SHADER_STENCILOP_SET_TO_REFERENCE;
pRenderContext->SetStencilState( stencilState );
m_GlowObjectDefinitions[i].DrawModel();
}
else if ( m_GlowObjectDefinitions[i].m_bRenderWhenUnoccluded )
{
ShaderStencilState_t stencilState;
stencilState.m_bEnable = true;
stencilState.m_nReferenceValue = 2;
stencilState.m_nTestMask = 0x1;
stencilState.m_nWriteMask = 0x3;
stencilState.m_CompareFunc = SHADER_STENCILFUNC_EQUAL;
stencilState.m_PassOp = SHADER_STENCILOP_INCREMENT_CLAMP;
stencilState.m_FailOp = SHADER_STENCILOP_KEEP;
stencilState.m_ZFailOp = SHADER_STENCILOP_SET_TO_REFERENCE;
pRenderContext->SetStencilState( stencilState );
m_GlowObjectDefinitions[i].DrawModel();
}
}
iNumGlowObjects++;
}
// Need to do a 2nd pass to warm stencil for objects which are rendered only when occluded
for ( int i = 0; i < m_GlowObjectDefinitions.Count(); ++ i )
{
if ( m_GlowObjectDefinitions[i].IsUnused() || !m_GlowObjectDefinitions[i].ShouldDraw( nSplitScreenSlot ) )
continue;
// Full bloom rendered objects should not be stenciled out here
if ( m_GlowObjectDefinitions[i].m_bFullBloomRender )
continue;
if ( m_GlowObjectDefinitions[i].m_bRenderWhenOccluded && !m_GlowObjectDefinitions[i].m_bRenderWhenUnoccluded )
{
ShaderStencilState_t stencilState;
stencilState.m_bEnable = true;
stencilState.m_nReferenceValue = 2;
stencilState.m_CompareFunc = SHADER_STENCILFUNC_ALWAYS;
stencilState.m_PassOp = SHADER_STENCILOP_SET_TO_REFERENCE;
stencilState.m_FailOp = SHADER_STENCILOP_KEEP;
stencilState.m_ZFailOp = SHADER_STENCILOP_KEEP;
pRenderContext->SetStencilState( stencilState );
m_GlowObjectDefinitions[i].DrawModel();
}
}
pRenderContext->OverrideDepthEnable( false, false );
render->SetBlend( flSavedBlend );
pRenderContext->SetStencilState( stencilStateDisable );
g_pStudioRender->ForcedMaterialOverride( NULL );
// If there aren't any objects to glow, don't do all this other stuff
// this fixes a bug where if there are glow objects in the list, but none of them are glowing,
// the whole screen blooms.
if ( iNumGlowObjects <= 0 )
return;
//=============================================
// Render the glow colors to _rt_FullFrameFB
//=============================================
{
PIXEvent pixEvent( pRenderContext, "RenderGlowModels" );
RenderGlowModels( pSetup, nSplitScreenSlot, pRenderContext );
}
//===================================
// Setup state for downsample/bloom
//===================================
pRenderContext->PushRenderTargetAndViewport();
// Get viewport
int nSrcWidth = pSetup->width;
int nSrcHeight = pSetup->height;
int nViewportX, nViewportY, nViewportWidth, nViewportHeight;
pRenderContext->GetViewport( nViewportX, nViewportY, nViewportWidth, nViewportHeight );
// Get material and texture pointers
IMaterial *pMatDownsample = materials->FindMaterial( "dev/glow_downsample", TEXTURE_GROUP_OTHER, true);
IMaterial *pMatBlurX = materials->FindMaterial( "dev/glow_blur_x", TEXTURE_GROUP_OTHER, true );
IMaterial *pMatBlurY = materials->FindMaterial( "dev/glow_blur_y", TEXTURE_GROUP_OTHER, true );
ITexture *pRtFullFrame = materials->FindTexture( FULL_FRAME_TEXTURE, TEXTURE_GROUP_RENDER_TARGET );
ITexture *pRtQuarterSize0 = materials->FindTexture( "_rt_SmallFB0", TEXTURE_GROUP_RENDER_TARGET );
ITexture *pRtQuarterSize1 = materials->FindTexture( "_rt_SmallFB1", TEXTURE_GROUP_RENDER_TARGET );
//============================================
// Downsample _rt_FullFrameFB to _rt_SmallFB0
//============================================
// First clear the full target to black if we're not going to touch every pixel
if ( ( pRtQuarterSize0->GetActualWidth() != ( pSetup->width / 4 ) ) || ( pRtQuarterSize0->GetActualHeight() != ( pSetup->height / 4 ) ) )
{
SetRenderTargetAndViewPort( pRtQuarterSize0, pRtQuarterSize0->GetActualWidth(), pRtQuarterSize0->GetActualHeight() );
pRenderContext->ClearColor3ub( 0, 0, 0 );
pRenderContext->ClearBuffers( true, false, false );
}
// Set the viewport
SetRenderTargetAndViewPort( pRtQuarterSize0, pSetup->width / 4, pSetup->height / 4 );
IMaterialVar *pbloomexpvar = pMatDownsample->FindVar( "$bloomexp", null );
if ( pbloomexpvar != NULL )
{
pbloomexpvar->SetFloatValue( 2.5f );
}
IMaterialVar *pbloomsaturationvar = pMatDownsample->FindVar( "$bloomsaturation", null );
if ( pbloomsaturationvar != NULL )
{
pbloomsaturationvar->SetFloatValue( 1.0f );
}
// note the -2's below. Thats because we are downsampling on each axis and the shader
// accesses pixels on both sides of the source coord
int nFullFbWidth = nSrcWidth;
int nFullFbHeight = nSrcHeight;
pRenderContext->DrawScreenSpaceRectangle( pMatDownsample, 0, 0, nSrcWidth/4, nSrcHeight/4,
0, 0, nFullFbWidth - 4, nFullFbHeight - 4,
pRtFullFrame->GetActualWidth(), pRtFullFrame->GetActualHeight() );
//============================//
// Guassian blur x rt0 to rt1 //
//============================//
// First clear the full target to black if we're not going to touch every pixel
if ( s_bFirstPass || ( pRtQuarterSize1->GetActualWidth() != ( pSetup->width / 4 ) ) || ( pRtQuarterSize1->GetActualHeight() != ( pSetup->height / 4 ) ) )
{
// On the first render, this viewport may require clearing
s_bFirstPass = false;
SetRenderTargetAndViewPort( pRtQuarterSize1, pRtQuarterSize1->GetActualWidth(), pRtQuarterSize1->GetActualHeight() );
pRenderContext->ClearColor3ub( 0, 0, 0 );
pRenderContext->ClearBuffers( true, false, false );
}
// Set the viewport
SetRenderTargetAndViewPort( pRtQuarterSize1, pSetup->width / 4, pSetup->height / 4 );
pRenderContext->DrawScreenSpaceRectangle( pMatBlurX, 0, 0, nSrcWidth/4, nSrcHeight/4,
0, 0, nSrcWidth/4-1, nSrcHeight/4-1,
pRtQuarterSize0->GetActualWidth(), pRtQuarterSize0->GetActualHeight() );
//============================//
// Gaussian blur y rt1 to rt0 //
//============================//
SetRenderTargetAndViewPort( pRtQuarterSize0, pSetup->width / 4, pSetup->height / 4 );
IMaterialVar *pBloomAmountVar = pMatBlurY->FindVar( "$bloomamount", NULL );
pBloomAmountVar->SetFloatValue( flBloomScale );
pRenderContext->DrawScreenSpaceRectangle( pMatBlurY, 0, 0, nSrcWidth / 4, nSrcHeight / 4,
0, 0, nSrcWidth / 4 - 1, nSrcHeight / 4 - 1,
pRtQuarterSize1->GetActualWidth(), pRtQuarterSize1->GetActualHeight() );
// Pop RT
pRenderContext->PopRenderTargetAndViewport();
{
//=======================================================================================================//
// At this point, pRtQuarterSize0 is filled with the fully colored glow around everything as solid glowy //
// blobs. Now we need to stencil out the original objects by only writing pixels that have no //
// stencil bits set in the range we care about. //
//=======================================================================================================//
IMaterial *pMatHaloAddToScreen = materials->FindMaterial( "dev/halo_add_to_screen", TEXTURE_GROUP_OTHER, true );
// Do not fade the glows out at all (weight = 1.0)
IMaterialVar *pDimVar = pMatHaloAddToScreen->FindVar( "$C0_X", NULL );
pDimVar->SetFloatValue( 1.0f );
ShaderStencilState_t stencilState;
stencilState.m_bEnable = true;
stencilState.m_nWriteMask = 0x0; // We're not changing stencil
stencilState.m_nTestMask = 0x3;
stencilState.m_nReferenceValue = 0x0;
stencilState.m_CompareFunc = SHADER_STENCILFUNC_EQUAL;
stencilState.m_PassOp = SHADER_STENCILOP_KEEP;
stencilState.m_FailOp = SHADER_STENCILOP_KEEP;
stencilState.m_ZFailOp = SHADER_STENCILOP_KEEP;
pRenderContext->SetStencilState( stencilState );
// Draw quad
pRenderContext->DrawScreenSpaceRectangle( pMatHaloAddToScreen, 0, 0, nViewportWidth, nViewportHeight,
0.0f, -0.5f, nSrcWidth / 4 - 1, nSrcHeight / 4 - 1,
pRtQuarterSize1->GetActualWidth(),
pRtQuarterSize1->GetActualHeight() );
// Disable stencil
pRenderContext->SetStencilState( stencilStateDisable );
}
}