public ShaderParameters(Transform objTransform, Camera camera)
{
var projectionMatrix = MyUtility.GetProjectMatrix(camera.fieldOfView, camera.aspect, camera.nearClipPlane, camera.farClipPlane);
var viewMatrix = MyUtility.GetViewMatrix(camera);
var modelMatrix = MyUtility.GetModelMatrix(objTransform);
var time = Time.time;
var sinTime = Mathf.Sin(time);
var cosTime = Mathf.Cos(time);
var deltaTime = Time.deltaTime;
var smoothDeltaTime = Time.smoothDeltaTime;
// Built-in shader variables
unity_ObjectToWorld = modelMatrix; // M
UNITY_MATRIX_V = viewMatrix; // V
UNITY_MATRIX_P = projectionMatrix; // P
unity_WorldToObject = objTransform.worldToLocalMatrix;
UNITY_MATRIX_MV = UNITY_MATRIX_V * unity_ObjectToWorld;
UNITY_MATRIX_MVP = UNITY_MATRIX_P * UNITY_MATRIX_MV;
UNITY_MATRIX_VP = UNITY_MATRIX_P * UNITY_MATRIX_V;
UNITY_MATRIX_T_MV = UNITY_MATRIX_MV.transpose;
UNITY_MATRIX_IT_MV = UNITY_MATRIX_T_MV.inverse;
// Camera and screen (TODO)
// Time
_Time = new Vector4(time / 20.0f, time, time * 2.0f, time * 3.0f); // Time since level load (t/20, t, t*2, t*3), use to animate things inside the shaders.
_SinTime = new Vector4(sinTime / 8.0f, sinTime / 4.0f, sinTime / 2.0f, sinTime); // Sine of time: (t/8, t/4, t/2, t).
_CosTime = new Vector4(cosTime / 8.0f, cosTime / 4.0f, cosTime / 2.0f, cosTime); // Cosine of time: (t/8, t/4, t/2, t).
unity_DeltaTime = new Vector4(deltaTime, 1.0f / deltaTime, smoothDeltaTime, 1.0f / smoothDeltaTime); // Delta time: (dt, 1/dt, smoothDt, 1/smoothDt).
}
void OnGUI()
{
// output
GUI.DrawTexture(new Rect(0, 0, tex.width, tex.height), tex);
if (!IsDebuging)
{
return;
}
// debug
MyUtility.LogPoint(new Rect(0, 0, 100, 20), $"Obj Count:{inputObj.Count}", textColor, 20);
MyUtility.LogPoint(new Rect(0, 20, 100, 20), $"resolution:{tex.width}x{tex.height}", textColor, 20);
var posY = 0;
var offset = 120;
posY -= offset;
var str = $"==== unity_project matrix ====\n{MyCamera.projectionMatrix}";
MyUtility.LogPoint(new Rect(0, MyCamera.pixelHeight + posY, 200, 150), str, textColor, 20);
posY -= offset;
var myProjectMatrix = MyUtility.GetProjectMatrix(MyCamera.fieldOfView, MyCamera.aspect, MyCamera.nearClipPlane, MyCamera.farClipPlane);
str = $"==== my_project matrix ====\n{myProjectMatrix}";
MyUtility.LogPoint(new Rect(0, MyCamera.pixelHeight + posY, 200, 150), str, textColor, 20);
posY -= offset;
str = $"==== unity_view matrix ====\n{MyCamera.worldToCameraMatrix}";
MyUtility.LogPoint(new Rect(0, MyCamera.pixelHeight + posY, 200, 150), str, textColor, 20);
posY -= offset;
var myViewMatrix = MyUtility.GetViewMatrix(MyCamera);
str = $"==== my_view matrix ====\n{myViewMatrix}";
MyUtility.LogPoint(new Rect(0, MyCamera.pixelHeight + posY, 200, 150), str, textColor, 20);
posY -= offset;
/* debug model matrix
* var obj = inputObj[0];
* str = $"==== unity_local2World matrix ====\n{obj.transform.localToWorldMatrix}";
* MyUtility.LogPoint(new Rect(0, MyCamera.pixelHeight + posY, 200, 150), str, textColor, 20);
* posY -= offset;
* str = $"==== my_local2World matrix ====\n{MyUtility.GetModelMatrix(obj.transform)}";
* MyUtility.LogPoint(new Rect(0, MyCamera.pixelHeight + posY, 200, 150), str, textColor, 20);
*/
}