public RenderTexture ApplyToAndReturn(RenderTexture source, SleekRenderSettings settings)
{
Vector4 luminanceThreshold = HelperExtensions.GetLuminanceThreshold(settings);
// Changing current Luminance Const value just to make sure that we have the latest settings in our Uniforms
_brightpassBlurMaterial.SetVector(Uniforms._LuminanceThreshold, luminanceThreshold);
_brightpassBlurMaterial.SetVector(Uniforms._TexelSize, new Vector2(1f / _blurTextures[0].width, 1f / _blurTextures[0].height));
var currentTargetRenderTexture = _blurTextures[0];
var previousTargetRenderTexture = _blurTextures[0];
var passes = _blurTextures.Length;
for (int i = 0; i < passes; i++)
{
currentTargetRenderTexture = _blurTextures[i];
// We use a different material for the first blur pass
if (i == 0)
{
// Applying downsample + brightpass (stored in Alpha)
_renderer.Blit(source, currentTargetRenderTexture, _brightpassBlurMaterial);
}
else
{
_downsampleBlurMaterial.SetVector(Uniforms._TexelSize, new Vector2(1f / currentTargetRenderTexture.width, 1f / currentTargetRenderTexture.height));
// Applying only blur to our already brightpassed texture
_renderer.Blit(previousTargetRenderTexture, currentTargetRenderTexture, _downsampleBlurMaterial);
}
previousTargetRenderTexture = currentTargetRenderTexture;
}
return(currentTargetRenderTexture);
}
private void CreateDefaultSettingsIfNoneLinked()
{
if (settings == null)
{
settings = ScriptableObject.CreateInstance <SleekRenderSettings>();
settings.name = "Default Settings";
}
}
public bool SomeSettingsHaveChanged(SleekRenderSettings settings)
{
var textureWidthIsWrong = settings.preserveAspectRatio ? false : settings.bloomTextureWidth != _baseTextureWidth;
return(settings.bloomPasses != _bloomPasses ||
settings.bloomTextureHeight != _baseTextureHeight ||
settings.preserveAspectRatio != _preserveAspectRatio ||
textureWidthIsWrong);
}
public static Vector4 GetLuminanceThreshold(SleekRenderSettings settings)
{
float oneOverOneMinusBloomThreshold = 1f / (1f - settings.bloomThreshold);
var luma = settings.bloomLumaVector;
return(new Vector4(
luma.x * oneOverOneMinusBloomThreshold,
luma.y * oneOverOneMinusBloomThreshold,
luma.z * oneOverOneMinusBloomThreshold, -settings.bloomThreshold * oneOverOneMinusBloomThreshold));
}
private void CalculateBloomHeightAndWidth(SleekRenderSettings settings, Camera camera)
{
_baseTextureHeight = settings.bloomTextureHeight;
if (settings.preserveAspectRatio)
{
_baseTextureWidth = Mathf.RoundToInt(_baseTextureHeight * camera.aspect);
}
else
{
_baseTextureWidth = settings.bloomTextureWidth;
}
}
public void CreateResources(SleekRenderSettings settings, Camera camera)
{
_bloomPasses = settings.bloomPasses;
_preserveAspectRatio = settings.preserveAspectRatio;
CalculateBloomHeightAndWidth(settings, camera);
switch (_bloomPasses)
{
case 3:
_blurTextures = new RenderTexture[3];
_blurTextures[0] = HelperExtensions.CreateTransientRenderTexture("Brightpass Blur 0",
_baseTextureWidth, _baseTextureHeight);
_blurTextures[1] = HelperExtensions.CreateTransientRenderTexture("Downsample Blur 1",
_baseTextureWidth / 2, _baseTextureHeight / 2);
_blurTextures[2] = HelperExtensions.CreateTransientRenderTexture("Downsample Blur 2",
_baseTextureWidth, _baseTextureHeight);
break;
default:
_blurTextures = new RenderTexture[5];
_blurTextures[0] = HelperExtensions.CreateTransientRenderTexture("Brightpass Blur 0",
_baseTextureWidth, _baseTextureHeight);
_blurTextures[1] = HelperExtensions.CreateTransientRenderTexture("Downsample Blur 1",
_baseTextureWidth / 2, _baseTextureHeight / 2);
_blurTextures[2] = HelperExtensions.CreateTransientRenderTexture("Downsample Blur 2",
_baseTextureWidth / 4, _baseTextureHeight / 4);
_blurTextures[3] = HelperExtensions.CreateTransientRenderTexture("Downsample Blur 4",
_baseTextureWidth / 2, _baseTextureHeight / 2);
_blurTextures[4] = HelperExtensions.CreateTransientRenderTexture("Downsample Blur 4",
_baseTextureWidth, _baseTextureHeight);
break;
}
_brightpassBlurMaterial = HelperExtensions.CreateMaterialFromShader("Sleek Render/Post Process/Brightpass Dualfilter Blur");
_downsampleBlurMaterial = HelperExtensions.CreateMaterialFromShader("Sleek Render/Post Process/Downsample Dualfilter Blur");
}
public static string GetTotalCostStringFor(SleekRenderSettings settings)
{
_sb.Remove(0, _sb.Length);
_sb.Append("This info is VERY approximate and depends on target GPU architecture. Treat it as general performance overhead.\n\n");
_sb.Append("Worst case (HiRez Low End GPU 2011-ish OpenGL ES 2.0 devices):\n\n");
_sb.Append("\tBase overhead:\t2 ms\n");
float totalCost = 2f;
if (settings.bloomEnabled)
{
switch (settings.bloomPasses)
{
case 3:
_sb.Append("\tBloom:\t\t3 ms\n");
totalCost += 3f;
break;
default:
_sb.Append("\tBloom:\t\t5 ms\n");
totalCost += 5f;
break;
}
}
if (settings.colorizeEnabled)
{
_sb.Append("\tColorize:\t\t3 ms\n");
totalCost += 3f;
}
if (settings.vignetteEnabled)
{
_sb.Append("\tVignette:\t\t0.5 ms\n");
totalCost += 0.5f;
}
if (settings.brightnessContrastEnabled)
{
_sb.Append("\tBr./Contr:\t0.5ms\n");
totalCost += 0.5f;
}
_sb.Append("\tTotal:\t\t" + totalCost.ToString("F2") + " ms\n\n");
_sb.Append("General case (Arm Mali400 GPU with 480x864 screen resolution - Galaxy S2-ish):\n\n");
_sb.Append("\tBase overhead:\t2 ms\n");
totalCost = 2f;
if (settings.bloomEnabled)
{
switch (settings.bloomPasses)
{
case 3:
_sb.Append("\tBloom:\t\t1 ms\n");
totalCost += 1f;
break;
default:
_sb.Append("\tBloom:\t\t2 ms\n");
totalCost += 2f;
break;
}
}
if (settings.colorizeEnabled)
{
_sb.Append("\tColorize:\t\t0.2 ms\n");
totalCost += 0.2f;
}
if (settings.vignetteEnabled)
{
_sb.Append("\tVignette:\t\t0.2 ms\n");
totalCost += 0.2f;
}
if (settings.brightnessContrastEnabled)
{
_sb.Append("\tBr./Contr:\t0.2ms\n");
totalCost += 0.2f;
}
_sb.Append("\tTotal:\t\t" + totalCost.ToString("F2") + " ms\n\n");
_sb.Append("Render target switch count (less is better):\n\n");
_sb.Append("\tBase pipeline:\t4\n");
int totalRenderTargetSwitchCount = 4;
if (settings.bloomEnabled)
{
switch (settings.bloomPasses)
{
case 3:
_sb.Append("\tBloom:\t\t3\n");
totalRenderTargetSwitchCount += 3;
break;
default:
_sb.Append("\tBloom:\t\t5\n");
totalRenderTargetSwitchCount += 5;
break;
}
}
_sb.Append("\tTotal:\t\t" + totalRenderTargetSwitchCount.ToString("D") + "\n\n");
return(_sb.ToString());
}
