ModdingSupport/Uprising/Shaders/PostFX_Bloom.scrapeh

//////////////////////////////////////////////////////////////////////////////
// ©2008 Electronic Arts Inc
//
// Scrape script for bloom post effect
//////////////////////////////////////////////////////////////////////////////
#ifndef SCRAPE_SCRIPT_POSTFX_BLOOM_SCRAPEH
#define SCRAPE_SCRIPT_POSTFX_BLOOM_SCRAPEH

//
// Bloom
//

var shader PostEffectBloomShader PostFX_Bloom.fx

// The following values are the basic render target sizes used on each platform.
// They normally need to be set through code to accommodate the various display resolutions/aspect ratios,
// but they can overridden here for experimentation.
#define CODE_DRIVEN_TEXTURE_SIZES 1

#if CODE_DRIVEN_TEXTURE_SIZES
	#define HIGH_X $PostEffect.Bloom.TextureSizeHigh.x
	#define HIGH_Y $PostEffect.Bloom.TextureSizeHigh.y
	#define MEDIUM_X $PostEffect.Bloom.TextureSizeMedium.x
	#define MEDIUM_Y $PostEffect.Bloom.TextureSizeMedium.y
	#define LOW_X $PostEffect.Bloom.TextureSizeLow.x
	#define LOW_Y $PostEffect.Bloom.TextureSizeLow.y
#else
	#define WIDESCREEN 1

	#if defined(EA_PLATFORM_WINDOWS)
		// The PC seems to have most resolutions map somewhat "nice" to 256 wide based render targets,
		// eg our main 1024 screen res is 4x downsampled, up to big displays of 2560x1600 which can be 10x downsampled.
		#if !WIDESCREEN // 4:3
			#define HIGH_X 256 // 1024 / 4
			#define HIGH_Y 192 // 768 / 4
			#define MEDIUM_X 64 // HIGH_X / 4
			#define MEDIUM_Y 48 // HIGH_Y / 4
			#define LOW_X 16 // MEDIUM_X / 4
			#define LOW_Y 12 // MEDIUM_Y / 4
		#else // 16:9
			#define HIGH_X 256
			#define HIGH_Y 144
			#define MEDIUM_X 64
			#define MEDIUM_Y 36
			#define LOW_X 16
			#define LOW_Y 9
		#endif
	#else // XENON
		// On the Xenon our two resolutions are 960x720 and 1280x720,
		// both map nicely to 4x downsampling with a height of 180 and variable width.
		#if !WIDESCREEN // 4:3
			#define HIGH_X 240
			#define HIGH_Y 180
			#define MEDIUM_X 60
			#define MEDIUM_Y 45
			#define LOW_X 15
			#define LOW_Y 11
		#else // 16:9
			#define HIGH_X 320
			#define HIGH_Y 180
			#define MEDIUM_X 80
			#define MEDIUM_Y 45
			#define LOW_X 20
			#define LOW_Y 11
		#endif
	#endif
#endif

#define BLOOM_SURFACE_FORMAT $PostEffect.Bloom.SurfaceFormat
#define BLOOM_TEXTURE_FORMAT $PostEffect.Bloom.TextureFormat

var texture BloomTextureHigh0 HIGH_X HIGH_Y BLOOM_TEXTURE_FORMAT

#if defined(EA_PLATFORM_WINDOWS)
	var texture BloomTextureHigh1 HIGH_X HIGH_Y BLOOM_TEXTURE_FORMAT
	#define BloomRenderTargetHigh0 BloomTextureHigh0
	#define BloomRenderTargetHigh1 BloomTextureHigh1
#elif defined(EA_PLATFORM_XENON)
	#define BloomTextureHigh1 BloomTextureHigh0
	var surface BloomRenderTargetHigh0 edram HIGH_X HIGH_Y BLOOM_SURFACE_FORMAT
	#define BloomRenderTargetHigh1 BloomRenderTargetHigh0
#endif

var texture BloomTextureMedium0 MEDIUM_X MEDIUM_Y BLOOM_TEXTURE_FORMAT

#if defined(EA_PLATFORM_WINDOWS)
	var texture BloomTextureMedium1 MEDIUM_X MEDIUM_Y BLOOM_TEXTURE_FORMAT
	#define BloomRenderTargetMedium0 BloomTextureMedium0
	#define BloomRenderTargetMedium1 BloomTextureMedium1
#elif defined(EA_PLATFORM_XENON)
	#define BloomTextureMedium1 BloomTextureMedium0
	var surface BloomRenderTargetMedium0 edram MEDIUM_X MEDIUM_Y BLOOM_SURFACE_FORMAT
	#define BloomRenderTargetMedium1 BloomRenderTargetMedium0
#endif

var texture BloomTextureLow0 LOW_X LOW_Y BLOOM_TEXTURE_FORMAT

#if defined(EA_PLATFORM_WINDOWS)
	var texture BloomTextureLow1 LOW_X LOW_Y BLOOM_TEXTURE_FORMAT
	#define BloomRenderTargetLow0 BloomTextureLow0
	#define BloomRenderTargetLow1 BloomTextureLow1
#elif defined(EA_PLATFORM_XENON)
	#define BloomTextureLow1 BloomTextureLow0
	var surface BloomRenderTargetLow0 edram LOW_X LOW_Y BLOOM_SURFACE_FORMAT
	#define BloomRenderTargetLow1 BloomRenderTargetLow0
#endif

proc PostEffectBloom
	if PostEffect Bloom.IsEnabled
		beginevent UpdatePostFXBloom

		// Fill debug pattern
		//setshader PostEffectBloomShader DebugPattern
		//renderfullquad

		// Copy frame buffer to RT
		callproc copyFrameBufferToTexture

		setdepth NULL

		// Downsample to high res texture
		settexture PostEffect Bloom.SourceTexture PostEffectFrameBufferTexture
		settosize PostEffect Bloom.SourceTextureSize PostEffectFrameBufferTexture

		settarget 0 BloomRenderTargetHigh0
		settosize PostEffect Bloom.TargetTextureSize BloomRenderTargetHigh0

		setshader PostEffectBloomShader DownsampleInitial
		renderquad
		XENON_RESOLVE(BloomTextureHigh0)

		// Downsample to medium res texture
		settexture PostEffect Bloom.SourceTexture BloomTextureHigh0
		settosize PostEffect Bloom.SourceTextureSize BloomTextureHigh0

		settarget 0 BloomRenderTargetMedium0
		setshader PostEffectBloomShader Downsample4x4
		renderquad
		XENON_RESOLVE(BloomTextureMedium0)

		// Downsample to low res texture
		settexture PostEffect Bloom.SourceTexture BloomTextureMedium0
		settosize PostEffect Bloom.SourceTextureSize BloomTextureMedium0

		settarget 0 BloomRenderTargetLow0
		setshader PostEffectBloomShader Downsample4x4
		renderquad
		XENON_RESOLVE(BloomTextureLow0)

		// Blur low res texture
		settexture PostEffect Bloom.SourceTexture BloomTextureLow0
		settosize PostEffect Bloom.SourceTextureSize BloomTextureLow0

		settarget 0 BloomRenderTargetLow1

		setshader PostEffectBloomShader BlurGaussian11x11U
		renderquad
		XENON_RESOLVE(BloomTextureLow1)

		settarget 0 BloomRenderTargetLow0

		settexture PostEffect Bloom.SourceTexture BloomTextureLow1
		settosize PostEffect Bloom.SourceTextureSize BloomTextureLow1

		setshader PostEffectBloomShader BlurGaussian11x11V
		renderquad
		XENON_RESOLVE(BloomTextureLow0)

		// Accumulate low and medium res texture
		settexture PostEffect FrameBufferTexture BloomTextureMedium0
		settexture PostEffect Bloom.SourceTexture BloomTextureLow0

		settarget 0 BloomRenderTargetMedium1

		setshader PostEffectBloomShader Accumulate
		renderquad
		XENON_RESOLVE(BloomTextureMedium1)

		// Blur medium res texture
		settexture PostEffect Bloom.SourceTexture BloomTextureMedium1
		settosize PostEffect Bloom.SourceTextureSize BloomTextureMedium1

		settarget 0 BloomRenderTargetMedium0
		setshader PostEffectBloomShader BlurGaussian11x11U
		renderquad
		XENON_RESOLVE(BloomTextureMedium0)

		settexture PostEffect Bloom.SourceTexture BloomTextureMedium0
		settosize PostEffect Bloom.SourceTextureSize BloomTextureMedium0

		settarget 0 BloomRenderTargetMedium1
		setshader PostEffectBloomShader BlurGaussian11x11V
		renderquad
		XENON_RESOLVE(BloomTextureMedium1)

		// Accumulate medium and high res texture
		settexture PostEffect FrameBufferTexture BloomTextureHigh0
		settexture PostEffect Bloom.SourceTexture BloomTextureMedium1

		settarget 0 BloomRenderTargetHigh1
		setshader PostEffectBloomShader Accumulate
		renderquad
		XENON_RESOLVE(BloomTextureHigh1)


		// Blur high res texture
		settexture PostEffect Bloom.SourceTexture BloomTextureHigh1
		settosize PostEffect Bloom.SourceTextureSize BloomTextureHigh1

		settarget 0 BloomRenderTargetHigh0
		setshader PostEffectBloomShader BlurGaussian11x11U
		renderquad
		XENON_RESOLVE(BloomTextureHigh0)

		settexture PostEffect Bloom.SourceTexture BloomTextureHigh0
		settosize PostEffect Bloom.SourceTextureSize BloomTextureHigh0

		settarget 0 BloomRenderTargetHigh1
		setshader PostEffectBloomShader BlurGaussian11x11V
		renderquad
		XENON_RESOLVE(BloomTextureHigh1)

		// Reset render target to screen
		callproc setFrameRenderTarget

		// Accumulate high res texture and frame buffer
		settexture PostEffect FrameBufferTexture PostEffectFrameBufferTexture
		settexture PostEffect Bloom.SourceTexture BloomTextureHigh1

		setshader PostEffectBloomShader AccumulateFinal
		renderquad

		// Fill half the screen with an intermediate texture for debugging
		//callproc setFrameRenderTarget
		//settexture PostEffect FrameBufferTexture BloomTextureHigh1
		//setshader PostEffectBloomShader DebugDisplay
		//renderfullquad

		callproc setFrameDepthBuffer
		
		endevent UpdatePostFXBloom
	endif
endproc

#endif // SCRAPE_SCRIPT_POSTFX_BLOOM_SCRAPEH