private void CalculateVpMatrixOffsetsAndTileRects(Camera camera)
{
int counter = 0;
int tileNum = drawInfo.tileX * drawInfo.tileY;
float aspect = camera.aspect;
if (m_VpOffsetParam == null || m_VpOffsetParam.Length != tileNum)
{
m_VpOffsetParam = new Vector4[tileNum];
}
if (m_ScreenRectParam == null || m_ScreenRectParam.Length != tileNum)
{
m_ScreenRectParam = new Vector4[tileNum];
}
float width = 1.0f / (float)drawInfo.tileX;
float height = 1.0f / (float)drawInfo.tileY;
for (int i = 0; i < drawInfo.tileY; ++i)
{
for (int j = 0; j < drawInfo.tileX; ++j)
{
m_VpOffsetParam[counter] = LookingGlassUtil.GetVPMatrixOffsets(aspect, perCameraInfo.fov, perCameraInfo.size, counter, tileNum);
m_ScreenRectParam[counter] = new Vector4(
(j / (float)drawInfo.tileX) * 2.0f - 1.0f + width,
-((i / (float)drawInfo.tileY) * 2.0f - 1.0f + height),
width, height);
++counter;
}
}
}
private void SetupVPMatrices(ScriptableRenderContext context, CommandBuffer cmd,
Camera camera,
int view, int numViews)
{
Matrix4x4 projMatrix = camera.projectionMatrix;
Matrix4x4 viewMatrix = camera.worldToCameraMatrix;
var vpOffset = LookingGlassUtil.GetVPMatrixOffsets(
camera.aspect, perCameraInfo.fov, perCameraInfo.size,
view, numViews);
// view matrix
viewMatrix.m03 -= vpOffset.x;
viewMatrix.m13 -= vpOffset.y;
// proj matrix
projMatrix.m02 -= vpOffset.z;
projMatrix.m12 -= vpOffset.w;
cmd.SetViewProjectionMatrices(viewMatrix, projMatrix);
context.ExecuteCommandBuffer(cmd);
cmd.Clear();
}