//-----------------------------------------------------------------------------
// Debugging aid to display a texture
//-----------------------------------------------------------------------------
static void OverlayShowTexture( const char* textureName, float scale )
{
bool foundVar;
IMaterial *pMaterial;
IMaterialVar *BaseTextureVar;
ITexture *pTex;
float x, y, w, h;
// ___error is created in code in CMaterialSystem::CreateDebugMaterials()
pMaterial = materials->FindMaterial( "___error", TEXTURE_GROUP_OTHER, true );
BaseTextureVar = pMaterial->FindVar( "$basetexture", &foundVar, false );
if (!foundVar)
return;
CMatRenderContextPtr pRenderContext( materials );
if ( textureName && textureName[0] )
{
pTex = materials->FindTexture( textureName, TEXTURE_GROUP_OTHER, false );
BaseTextureVar->SetTextureValue( pTex );
w = pTex->GetActualWidth() * scale;
h = pTex->GetActualHeight() * scale;
}
else
{
w = h = 64.0f * scale;
}
// Center relative to current viewport
int nViewportX, nViewportY, nViewportWidth, nViewportHeight;
pRenderContext->GetViewport( nViewportX, nViewportY, nViewportWidth, nViewportHeight );
x = ( nViewportWidth - w ) * 0.5f;
y = ( nViewportHeight - h ) * 0.5f;
pRenderContext->Bind( pMaterial );
IMesh* pMesh = pRenderContext->GetDynamicMesh( true );
CMeshBuilder meshBuilder;
meshBuilder.Begin( pMesh, MATERIAL_QUADS, 1 );
meshBuilder.Position3f( x, y, 0.0f );
meshBuilder.TexCoord2f( 0, 0.0f, 0.0f );
meshBuilder.AdvanceVertex();
meshBuilder.Position3f( x+w, y, 0.0f );
meshBuilder.TexCoord2f( 0, 1.0f, 0.0f );
meshBuilder.AdvanceVertex();
meshBuilder.Position3f( x+w, y+h, 0.0f );
meshBuilder.TexCoord2f( 0, 1.0f, 1.0f );
meshBuilder.AdvanceVertex();
meshBuilder.Position3f( x, y+h, 0.0f );
meshBuilder.TexCoord2f( 0, 0.0f, 1.0f );
meshBuilder.AdvanceVertex();
meshBuilder.End();
pMesh->Draw();
}
//-----------------------------------------------------------------------------
// Debugging aid to display a texture
//-----------------------------------------------------------------------------
static void OverlayShowTexture( const char* textureName, float scale )
{
bool foundVar;
IMaterial *pMaterial;
IMaterialVar *BaseTextureVar;
ITexture *pTex;
float x, y, w, h;
// screen safe
x = 32;
y = 32;
pMaterial = materials->FindMaterial( "___debug", TEXTURE_GROUP_OTHER, true );
BaseTextureVar = pMaterial->FindVar( "$basetexture", &foundVar, false );
if (!foundVar)
return;
CMatRenderContextPtr pRenderContext( materials );
if ( textureName && textureName[0] )
{
pTex = materials->FindTexture( textureName, TEXTURE_GROUP_OTHER, false );
BaseTextureVar->SetTextureValue( pTex );
w = pTex->GetActualWidth() * scale;
h = pTex->GetActualHeight() * scale;
}
else
{
w = h = 64.0f * scale;
}
pRenderContext->Bind( pMaterial );
IMesh* pMesh = pRenderContext->GetDynamicMesh( true );
CMeshBuilder meshBuilder;
meshBuilder.Begin( pMesh, MATERIAL_QUADS, 1 );
meshBuilder.Position3f( x, y, 0.0f );
meshBuilder.TexCoord2f( 0, 0.0f, 0.0f );
meshBuilder.AdvanceVertex();
meshBuilder.Position3f( x+w, y, 0.0f );
meshBuilder.TexCoord2f( 0, 1.0f, 0.0f );
meshBuilder.AdvanceVertex();
meshBuilder.Position3f( x+w, y+h, 0.0f );
meshBuilder.TexCoord2f( 0, 1.0f, 1.0f );
meshBuilder.AdvanceVertex();
meshBuilder.Position3f( x, y+h, 0.0f );
meshBuilder.TexCoord2f( 0, 0.0f, 1.0f );
meshBuilder.AdvanceVertex();
meshBuilder.End();
pMesh->Draw();
}
//------------------------------------------------------------------------------
// CExampleEffect render
//------------------------------------------------------------------------------
void CExampleEffect::Render( int x, int y, int w, int h )
{
if ( !IsEnabled() )
return;
// Render Effect
Rect_t actualRect;
UpdateScreenEffectTexture( 0, x, y, w, h, false, &actualRect );
ITexture *pTexture = GetFullFrameFrameBufferTexture( 0 );
CMatRenderContextPtr pRenderContext( materials );
pRenderContext->DrawScreenSpaceRectangle( m_Material, x, y, w, h,
actualRect.x, actualRect.y, actualRect.x+actualRect.width-1, actualRect.y+actualRect.height-1,
pTexture->GetActualWidth(), pTexture->GetActualHeight() );
}
void draw_pp_shader( const CViewSetup &view, IMaterial *pMaterial)
{
int x = view.x;
int y = view.y;
int w = view.width;
int h = view.height;
Rect_t actualRect;
UpdateScreenEffectTexture( 0, x, y, w, h, false, &actualRect);
int u1 = actualRect.x;
int v1 = actualRect.y;
int u2 = actualRect.x+actualRect.width-1;
int v2 = actualRect.y+actualRect.height-1;
ITexture *pTexture = GetFullFrameFrameBufferTexture( 0 );
int aw = pTexture->GetActualWidth();
int ah = pTexture->GetActualHeight();
CMatRenderContextPtr pRenderContext( materials );
pRenderContext->DrawScreenSpaceRectangle( pMaterial, x, y, w, h, u1, v1, u2, v2, aw, ah );
pRenderContext.SafeRelease();
}
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 );
}
}
void CGodRaysEffect::Render( int x, int y, int w, int h )
{
CMatRenderContextPtr pRenderContext( materials );
// Save off the current render target and put the occlusion
// mask on the top of the rt stack.
pRenderContext->PushRenderTargetAndViewport( m_OcclusionMask );
// Create the god rays rendering view.
CViewRender* pViewRender = CViewRender::GetMainView();
CRefPtr<CGodRaysView> pGodRaysView = new CGodRaysView( pViewRender );
// Set the sun instance.
pGodRaysView->m_pSun = m_pSun;
// Draw the occlusion mask.
pViewRender->AddViewToScene( pGodRaysView );
// Restore original render targets.
pRenderContext->PopRenderTargetAndViewport();
// Now, downsample the occlusion mask. Start by setting the quarter
// sized render target as the texture to render to.
pRenderContext->PushRenderTargetAndViewport( m_SmallRT0 );
// Get the dimensions of the god rays texture.
ITexture* pMaskTexture = m_OcclusionMask;
const int nSrcWidth = pMaskTexture->GetActualWidth();
const int nSrcHeight = pMaskTexture->GetActualHeight();
const int nQtrWidth = nSrcWidth / 4;
const int nQtrHeight = nSrcHeight / 4;
// Blit the data from the occlusion mask texture to the quarter sized one
// and use the downsample shader to do it with.
pRenderContext->DrawScreenSpaceRectangle(
m_DownsampleMaterial,
0, 0,
nQtrWidth, nQtrHeight,
0, 0,
nSrcWidth - 2, nSrcHeight - 2,
nSrcWidth, nSrcHeight );
// Restore the original render target.
pRenderContext->PopRenderTargetAndViewport();
Vector vLightPos;
GetLightPosition( vLightPos );
if( SetMaterialParms( vLightPos ) )
{
// Apply godrays on _rt_SmallFB0 -> _rt_SmallFB1.
pRenderContext->PushRenderTargetAndViewport( m_SmallRT1 );
pRenderContext->DrawScreenSpaceRectangle(
m_GodRaysMaterial,
0, 0,
nQtrWidth, nQtrHeight,
0, 0,
nQtrWidth - 2, nQtrHeight - 2,
nQtrWidth, nQtrHeight );
pRenderContext->PopRenderTargetAndViewport();
// Now blur _rt_SmallFB1 -> _rt_SmallFB0.
pRenderContext->PushRenderTargetAndViewport( m_SmallRT0 );
pRenderContext->DrawScreenSpaceRectangle(
m_BlurYMaterial,
0, 0,
nQtrWidth, nQtrHeight,
0, 0,
nQtrWidth - 2, nQtrHeight - 2,
nQtrWidth, nQtrHeight );
pRenderContext->PopRenderTargetAndViewport();
// Now blur _rt_SmallFB0 -> _rt_SmallFB1.
pRenderContext->PushRenderTargetAndViewport( m_SmallRT1 );
pRenderContext->DrawScreenSpaceRectangle(
m_BlurXMaterial,
0, 0,
nQtrWidth, nQtrHeight,
0, 0,
nQtrWidth - 2, nQtrHeight - 2,
nQtrWidth, nQtrHeight );
// Restore old render target and viewport.
pRenderContext->PopRenderTargetAndViewport();
// This forces the framebuffer to update with the latest scene.
UpdateScreenEffectTexture( 0, x, y, w, h, true );
// Now combine the godrays results with the main frame buffer.
pRenderContext->DrawScreenSpaceQuad( m_GodRaysCombineMaterial );
}
// Release the render context.
pRenderContext->Release();
}