public override void OnPreviewGUI(Rect r, GUIStyle background)
{
GradientTexture gradientTexture = target as GradientTexture;
Texture2D texture = gradientTexture.GetTexture();
if (texture != null)
{
Rect previewRect = new Rect(r);
float textureAspectRatio = gradientTexture.resolution.x / gradientTexture.resolution.y;
float previewAspectRatio = r.width / r.height;
if (textureAspectRatio >= previewAspectRatio)
{
float scale = gradientTexture.resolution.x / r.width;
float newHeight = gradientTexture.resolution.y / scale;
previewRect.width = r.width;
previewRect.height = newHeight;
previewRect.y = (r.height / 2.0f) - (newHeight / 2.0f);
}
else
{
float scale = gradientTexture.resolution.y / r.height;
float newWidth = gradientTexture.resolution.x / scale;
previewRect.width = newWidth;
previewRect.height = r.height;
previewRect.x = (r.width / 2.0f) - (newWidth / 2.0f);
}
EditorGUI.DrawPreviewTexture(previewRect, texture);
}
}
void Update()
{
var material = m_Raymarcher.GetRaymarchMaterial();
bool useReflections = m_Reflections > 0;
bool kw = material.IsKeywordEnabled(REFLECTIONS_KEYWORD);
if (kw && !useReflections)
{
material.DisableKeyword(REFLECTIONS_KEYWORD);
}
else if (!kw && useReflections)
{
material.EnableKeyword(REFLECTIONS_KEYWORD);
}
material.SetInt("_Reflections", m_Reflections);
material.SetInt("_ReflectionSteps", m_ReflectionSteps);
material.SetColor("_ReflectionColor", m_ReflectionColor);
material.SetFloat("_Glow", m_Glow);
material.SetColor("_GlowColor", m_ColorizedGlow);
material.SetTexture("_SkyGradient", m_SkyGradient.GetTexture());
material.SetFloat("_SkyGradientNoise", m_SkyGradientNoise);
}