void D3D11RenderTarget::captureDepthBuffer(DepthImage32& result, const mat4f& perspectiveTransform)
{
captureDepthBuffer(result);
const mat4f inv = perspectiveTransform.getInverse();
//result.setInvalidValue(std::numeric_limits<float>::infinity()); //the default is -INF
for (unsigned int y = 0; y < result.getHeight(); y++) {
for (unsigned int x = 0; x < result.getWidth(); x++) {
float &v = result(x, y);
if (v >= 1.0f)
v = result.getInvalidValue();
else
{
//float dx = math::linearMap(0.0f, result.getWidth() - 1.0f, -1.0f, 1.0f, (float)x);
//float dy = math::linearMap(0.0f, result.getHeight() - 1.0f, -1.0f, 1.0f, (float)y);
//v = (inv * vec3f(dx, dy, v)).z;
vec2f p = D3D11GraphicsDevice::pixelToNDC(vec2i(x, y), result.getWidth(), result.getHeight());
v = (inv * vec3f(p.x, p.y, v)).z;
}
}
}
}
void D3D11RenderTarget::captureDepthBuffer(ColorImageR32 &result, const mat4f &perspectiveTransform)
{
captureDepthBuffer(result);
auto inv = perspectiveTransform.getInverse();
result.setInvalidValue(std::numeric_limits<float>::infinity());
for (UINT y = 0; y < result.getHeight(); y++)
{
for (UINT x = 0; x < result.getWidth(); x++)
{
float &v = result(x, y);
if (v >= 1.0f)
v = result.getInvalidValue();
else
{
float dx = math::linearMap(0.0f, result.getWidth() - 1.0f, -1.0f, 1.0f, (float)x);
float dy = math::linearMap(0.0f, result.getHeight() - 1.0f, -1.0f, 1.0f, (float)y);
v = (inv * vec3f(dx, dy, v)).length();
}
}
}
}