static void WaterSimulation(void)
{
LPDIRECT3DDEVICE9 device = GutGetGraphicsDeviceDX9();
device->SetRenderTarget(0, g_pSurfaces[TEX_HEIGHT2]);
device->SetDepthStencilSurface(NULL);
D3DXHANDLE shader = g_pWaterEffect->GetTechniqueByName("WaterSimulation");
D3DXHANDLE heightmap_current_var = g_pWaterEffect->GetParameterByName(NULL, "heightmap_current");
D3DXHANDLE heightmap_prev_var = g_pWaterEffect->GetParameterByName(NULL, "heightmap_prev");
D3DXHANDLE texturesize_var = g_pWaterEffect->GetParameterByName(NULL, "texture_size");
D3DXHANDLE damping_var = g_pWaterEffect->GetParameterByName(NULL, "fDamping");
Vector4 texturesize;
texturesize[0] = 1.0f/(float)g_ImageInfo.m_iWidth;
texturesize[1] = 1.0f/(float)g_ImageInfo.m_iHeight;
texturesize[2] = (float)g_ImageInfo.m_iWidth;
texturesize[3] = (float)g_ImageInfo.m_iHeight;
g_pWaterEffect->SetTechnique(shader);
g_pWaterEffect->SetTexture(heightmap_prev_var, g_pTextures[TEX_HEIGHT0]);
g_pWaterEffect->SetTexture(heightmap_current_var, g_pTextures[TEX_HEIGHT1]);
g_pWaterEffect->SetFloat(damping_var, 0.99f);
g_pWaterEffect->SetVector(texturesize_var, (D3DXVECTOR4*)&texturesize);
g_pWaterEffect->Begin(NULL,0);
g_pWaterEffect->BeginPass(0);
GutDrawFullScreenQuad_DX9(&g_ImageInfo);
g_pWaterEffect->EndPass();
g_pWaterEffect->End();
}
static void RenderWater(void)
{
LPDIRECT3DDEVICE9 device = GutGetGraphicsDeviceDX9();
D3DXHANDLE shader = g_pWaterEffect->GetTechniqueByName("Water");
D3DXHANDLE normalmap_var = g_pWaterEffect->GetParameterByName(NULL, "NormalmapTex");
D3DXHANDLE watermap_var = g_pWaterEffect->GetParameterByName(NULL, "WaterTex");
D3DXHANDLE texcoordscale_var = g_pWaterEffect->GetParameterByName(NULL, "fTexcoordScale");
g_pWaterEffect->SetTechnique(shader);
g_pWaterEffect->SetTexture(normalmap_var, g_pTextures[TEX_NORMAL]);
g_pWaterEffect->SetTexture(watermap_var, g_pWaterTexture);
g_pWaterEffect->SetFloat(texcoordscale_var, 0.2f);
g_pWaterEffect->Begin(NULL,0);
g_pWaterEffect->BeginPass(0);
GutDrawFullScreenQuad_DX9(&g_ImageInfo);
g_pWaterEffect->EndPass();
g_pWaterEffect->End();
}
static void HeightmapToNormal(void)
{
LPDIRECT3DDEVICE9 device = GutGetGraphicsDeviceDX9();
device->SetRenderTarget(0, g_pSurfaces[TEX_NORMAL]);
device->SetDepthStencilSurface(NULL);
D3DXHANDLE shader = g_pWaterEffect->GetTechniqueByName("ConvertNormal");
D3DXHANDLE heightmap_current_var = g_pWaterEffect->GetParameterByName(NULL, "heightmap_current");
D3DXHANDLE normalscale_var = g_pWaterEffect->GetParameterByName(NULL, "fNormalScale");
g_pWaterEffect->SetTechnique(shader);
g_pWaterEffect->SetTexture(heightmap_current_var, g_pTextures[TEX_HEIGHT2]);
g_pWaterEffect->SetFloat(normalscale_var, 1.0f);
g_pWaterEffect->Begin(NULL,0);
g_pWaterEffect->BeginPass(0);
GutDrawFullScreenQuad_DX9(&g_ImageInfo);
g_pWaterEffect->EndPass();
g_pWaterEffect->End();
}
static void ParticleSimulation(void)
{
LPDIRECT3DDEVICE9 device = GutGetGraphicsDeviceDX9();
device->SetRenderTarget(0, g_pSurfaces[TEX_POSITION1]);
device->SetRenderTarget(1, g_pSurfaces[TEX_VELOCITY1]);
device->SetDepthStencilSurface(NULL);
RECT rect;
rect.left = 0;
rect.right = g_texture_width;
rect.top = 0;
rect.bottom = g_num_particles / g_texture_width;
if ( rect.bottom==0 )
return;
device->SetScissorRect(&rect);
device->SetRenderState(D3DRS_SCISSORTESTENABLE, TRUE);
D3DXHANDLE shader = g_pParticleFX->GetTechniqueByName("Simulate");
D3DXHANDLE positiontex_var = g_pParticleFX->GetParameterByName(NULL, "PositionTex");
D3DXHANDLE velocitytex_var = g_pParticleFX->GetParameterByName(NULL, "VelocityTex");
D3DXHANDLE noisetex_var = g_pParticleFX->GetParameterByName(NULL, "NoiseTex");
D3DXHANDLE force_var = g_pParticleFX->GetParameterByName(NULL, "Force");
D3DXHANDLE time_var = g_pParticleFX->GetParameterByName(NULL, "fTimeAdvance");
D3DXHANDLE rand_var = g_pParticleFX->GetParameterByName(NULL, "Rand");
D3DXHANDLE tan_var = g_pParticleFX->GetParameterByName(NULL, "fTan");
D3DXHANDLE liferange_var = g_pParticleFX->GetParameterByName(NULL, "LifeRange");
D3DXHANDLE speedrange_var = g_pParticleFX->GetParameterByName(NULL, "SpeedRange");
D3DXHANDLE sizerange_var = g_pParticleFX->GetParameterByName(NULL, "SizeRange");
Vector4 vForce = g_vForce * g_fTimeAdvance;
Vector4 vRand[3];
Vector4 vLifeRange(1.0f, 2.0f, 0.0f, 0.0f);
Vector4 vSpeedRange(1.0f, 2.0f, 0.0f, 0.0f);
Vector4 vSizeRange(0.01f, 0.02f, 0.0f, 0.0f);
for ( int i=0; i<3; i++ )
{
vRand[i][0] = float(rand()%1024)/1024.0f;
vRand[i][1] = float(rand()%1024)/1024.0f;
vRand[i][2] = float(rand()%1024)/1024.0f;
vRand[i][3] = float(rand()%1024)/1024.0f;
}
g_pParticleFX->SetTechnique(shader);
g_pParticleFX->SetTexture(positiontex_var, g_pTextures[TEX_POSITION0]);
g_pParticleFX->SetTexture(velocitytex_var, g_pTextures[TEX_VELOCITY0]);
g_pParticleFX->SetTexture(noisetex_var, g_pNoiseTexture);
g_pParticleFX->SetVector(force_var, (D3DXVECTOR4*)&vForce);
g_pParticleFX->SetVectorArray(rand_var, (D3DXVECTOR4*)&vRand, 3);
g_pParticleFX->SetVector(liferange_var, (D3DXVECTOR4*)&vLifeRange);
g_pParticleFX->SetVector(speedrange_var, (D3DXVECTOR4*)&vSpeedRange);
g_pParticleFX->SetVector(sizerange_var, (D3DXVECTOR4*)&vSizeRange);
g_pParticleFX->SetFloat(time_var, g_fTimeAdvance);
g_pParticleFX->SetFloat(tan_var, FastMath::Tan(FastMath::DegToRad(g_fEmitTheta)));
g_pParticleFX->Begin(NULL,0);
g_pParticleFX->BeginPass(0);
GutDrawFullScreenQuad_DX9(&g_ImageInfo);
g_pParticleFX->EndPass();
g_pParticleFX->End();
device->SetRenderTarget(1, NULL);
device->SetRenderState(D3DRS_SCISSORTESTENABLE, FALSE);
}
