void Combined()
{
// Begin rendering the Sobel Filter along the X-axis
gRenderTarget.begin(&gBlurTexture2);
gRenderTarget.clear(D3DCOLOR_XRGB(255, 255, 255));
// Select unfiltered render target to the left side of the screen
gDiffTex.select();
g3D->renderSAQ(0, 0, 256, 256, "GuassianBlurVert");
gRenderTarget.end(); // Finish rendering to the shadow map
// Begin rendering the Sobel Filter along the Y-axis
gRenderTarget.begin(&gBlurTexture1);
gRenderTarget.clear(D3DCOLOR_XRGB(255, 255, 255));
// Select unfiltered render target to the left side of the screen
gBlurTexture2.select();
g3D->renderSAQ(0, 0, 256, 256, "GuassianBlurHorz");
gRenderTarget.end(); // Finish rendering to the shadow map
////// Sobel
// Begin rendering the Sobel Filter along the X-axis
gRenderTarget.begin(&gBlurTexture2);
gRenderTarget.clear(D3DCOLOR_XRGB(255, 255, 255));
// Select unfiltered render target to the left side of the screen
gBlurTexture1.select();
g3D->renderSAQ(0, 0, 256, 256, "SobelFilter");
gRenderTarget.end(); // Finish rendering to the shadow map
}
void RenderShadowMap()
{
D3DXMATRIX wMat; // world matrix for each object we want to render
// Begin rendering to the shadow map texture
gRenderTarget.begin(&gShadowMap);
gRenderTarget.clear(D3DCOLOR_XRGB(255, 255, 255));
D3DXMATRIXA16 viewMat;
D3DXVECTOR3 target(0.0f, 0.0f, 0.0f); // Point where light is focused
D3DXVECTOR3 up(0.0f, 1.0f, 0.0f); // World's up vector
// Create view matrix for light
// **NOTE** It is very important to remember that we are treating the light as
// a point light when rendering the objects, but for shadow casting, we are
// assuming the light is always shining towards (0,0,0). Keep that in mind when thinking about
// if the shadows look correct or not.
D3DXMatrixLookAtLH(&viewMat, &gLightPos, &target, &up);
// Set the view matrix of the light
g3D->mShader->SetFloatArray("gLightViewMat", &viewMat._11, 16);
// Set world matrix of box and render
D3DXMatrixTranslation(&wMat, kBoxPos.x, kBoxPos.y, kBoxPos.z);
g3D->setWorldMatrix(&wMat);
g3D->render("ShadowMap", gBox);
// Set world matrix of sphere and render
D3DXMatrixTranslation(&wMat, kSherePos.x, kSherePos.y, kSherePos.z);
g3D->setWorldMatrix(&wMat);
g3D->render("ShadowMap", gSphere);
gRenderTarget.end(); // Finish rendering to the shadow map
}
void RenderSobelFilter()
{
// Begin rendering the Sobel Filter along the X-axis
gRenderTarget.begin(&gBlurTexture2);
gRenderTarget.clear(D3DCOLOR_XRGB(255, 255, 255));
// Select unfiltered render target to the left side of the screen
gDiffTex.select();
g3D->renderSAQ(0, 0, 256, 256, "SobelFilter");
gRenderTarget.end(); // Finish rendering to the shadow map
}