port from perforce

ice/src/FluidContext.h

@@ -0,0 +1,117 @@
+#pragma once
+
+#include <d3d9.h>
+#include <d3dx9.h>
+
+struct InstanceData
+{
+	float pos[3];
+	float size;
+	float intensity;
+};
+
+struct FluidSettings
+{
+	float Softness;
+	float LightTransferAmmount;
+	float SpecularFactor;
+	float SpecularPower;
+	float TextureScale;
+	float TranslucencyAmmount;
+	float SurfaceTension;
+	float RefractAmmount;
+	int BlurSteps;
+	float RenderTextureSizeScale;
+
+	IDirect3DTexture9* DiffuseTexture;
+};
+
+struct Fluid
+{
+	FluidSettings Settings;
+
+	IDirect3DTexture9* renderTexture[4];
+	IDirect3DSurface9* renderSurface[4];
+
+	IDirect3DTexture9* renderTexturePingPong[8];
+	IDirect3DSurface9* renderSurfacePingPong[8];
+	IDirect3DSurface9* pongPongDepthBuffer;
+
+	D3DXVECTOR4 renderTargetPingPongDDX;
+};
+
+struct FluidParticleSystem
+{
+	unsigned int InstanceCount;
+	IDirect3DVertexBuffer9* InstanceDataBuffer;
+};
+
+class FluidContext
+{
+public:
+	void BuildUp(IDirect3DDevice9* device, int screenX, int screenY);
+
+	void RenderParticles(const FluidParticleSystem& particleInfo);
+	
+	void Begin(const D3DXMATRIX& viewProj, const D3DXMATRIX& view, const D3DXMATRIX& inverseView, const D3DXVECTOR4& eye, const D3DXVECTOR4& eyeDir, const Fluid& fluid);
+	void End();
+	void Display(const Fluid& fluid, IDirect3DTexture9* backgroundTexture);
+
+	FluidParticleSystem GenerateFluidParticleSystem(unsigned int instanceCount, InstanceData* initialData = NULL);
+	Fluid GenerateFluid(FluidSettings settings);
+	ID3DXEffect* effect;
+
+private:
+	IDirect3DDevice9* d3dDevice;
+	IDirect3DVertexDeclaration9* quadVertexDecl;
+	IDirect3DVertexDeclaration9* vertexDecl;
+	IDirect3DIndexBuffer9* quadIndexBuffer;
+	IDirect3DVertexBuffer9* quadVertexBuffer;
+
+	static const int renderTextureCount = 4; // pos, normal, density, ballpos
+
+	IDirect3DSurface9* backBufferDepthBuffer;
+	IDirect3DSurface9* backBuffer;
+
+	int renderTargetWidth;
+	int renderTargetHeight;
+	D3DXVECTOR4 renderTargetDDX;
+
+	const Fluid* currentFluid;
+};
+
+static const float particleQuadVerts[20] =
+{
+	-1.0f,-1.0f, 0.0f, 
+	0.0f, 1.0f,
+
+	-1.0f, 1.0f, 0.0f, 
+	0.0f, 0.0f,
+
+	1.0f,  1.0f, 0.0f, 
+	1.0f, 0.0f,
+
+	1.0f, -1.0f, 0.0f, 
+	1.0f, 1.0f
+};
+
+static const float screenQuadVerts[30] =
+{
+	-1.0f,-1.0f, 1.0f, 
+	0.0f, 1.0f,
+
+	-1.0f, 1.0f, 1.0f, 
+	0.0f, 0.0f,
+
+	1.0f,  1.0f, 1.0f, 
+	1.0f, 0.0f,
+
+	1.0f,  1.0f, 1.0f, 
+	1.0f, 0.0f,
+
+	-1.0f,-1.0f, 1.0f, 
+	0.0f, 1.0f,
+
+	1.0f, -1.0f, 1.0f, 
+	1.0f, 1.0f
+};