internal Texture Lerp(Texture from, Texture to, float t)
{
Assert.IsNotNull(from);
Assert.IsNotNull(to);
Assert.AreEqual(from.width, to.width);
Assert.AreEqual(from.height, to.height);
// Saves a potentially expensive fullscreen blit when using dirt textures & the likes
if (from == to)
{
return(from);
}
bool is3D = from is Texture3D ||
(from is RenderTexture && ((RenderTexture)from).volumeDepth > 1);
RenderTexture rt;
// 3D texture blending is a special case and only works on compute enabled platforms
if (is3D)
{
int dpth = @from is Texture3D ? ((Texture3D)@from).depth : ((RenderTexture)@from).volumeDepth;
int size = Mathf.Max(from.width, from.height);
size = Mathf.Max(size, dpth);
rt = Get(RenderTextureFormat.ARGBHalf, from.width, from.height, dpth, true, true);
var compute = m_Resources.computeShaders.texture3dLerp;
int kernel = compute.FindKernel("KTexture3DLerp");
m_Command.SetComputeVectorParam(compute, "_DimensionsAndLerp", new Vector4(from.width, from.height, dpth, t));
m_Command.SetComputeTextureParam(compute, kernel, "_Output", rt);
m_Command.SetComputeTextureParam(compute, kernel, "_From", from);
m_Command.SetComputeTextureParam(compute, kernel, "_To", to);
int groupSizeXY = Mathf.CeilToInt(size / 8f);
int groupSizeZ = Mathf.CeilToInt(size / 8f);
m_Command.DispatchCompute(compute, kernel, groupSizeXY, groupSizeXY, groupSizeZ);
return(rt);
}
// 2D texture blending
// We could handle textures with different sizes by picking the biggest one to avoid
// popping effects. This would work in most cases but will still pop if one texture is
// wider but shorter than the other. Generally speaking you're expected to use same-size
// textures anyway so we decided not to handle this case at the moment, especially since
// it would waste a lot of texture memory as soon as you start using bigger textures
// (snow ball effect).
var format = TextureFormatUtilities.GetUncompressedRenderTextureFormat(to);
rt = Get(format, to.width, to.height);
var sheet = m_PropertySheets.Get(m_Resources.shaders.texture2dLerp);
sheet.properties.SetTexture(ShaderIDs.To, to);
sheet.properties.SetFloat(ShaderIDs.Interp, t);
m_Command.BlitFullscreenTriangle(from, rt, sheet, 0);
return(rt);
}
internal Texture Lerp(Texture from, Texture to, float t)
{
if (from == to)
{
return(from);
}
RenderTexture renderTexture;
if (from is Texture3D || (from is RenderTexture && ((RenderTexture)from).volumeDepth > 1))
{
int num = (!(from is Texture3D)) ? ((RenderTexture)from).volumeDepth : ((Texture3D)from).depth;
int a = Mathf.Max(from.width, from.height);
a = Mathf.Max(a, num);
renderTexture = Get(RenderTextureFormat.ARGBHalf, from.width, from.height, num, enableRandomWrite: true, force3D: true);
ComputeShader texture3dLerp = m_Resources.computeShaders.texture3dLerp;
int kernelIndex = texture3dLerp.FindKernel("KTexture3DLerp");
m_Command.SetComputeVectorParam(texture3dLerp, "_DimensionsAndLerp", new Vector4(from.width, from.height, num, t));
m_Command.SetComputeTextureParam(texture3dLerp, kernelIndex, "_Output", renderTexture);
m_Command.SetComputeTextureParam(texture3dLerp, kernelIndex, "_From", from);
m_Command.SetComputeTextureParam(texture3dLerp, kernelIndex, "_To", to);
int num2 = Mathf.CeilToInt((float)a / 8f);
int threadGroupsZ = Mathf.CeilToInt((float)a / 8f);
m_Command.DispatchCompute(texture3dLerp, kernelIndex, num2, num2, threadGroupsZ);
return(renderTexture);
}
RenderTextureFormat uncompressedRenderTextureFormat = TextureFormatUtilities.GetUncompressedRenderTextureFormat(to);
renderTexture = Get(uncompressedRenderTextureFormat, to.width, to.height);
PropertySheet propertySheet = m_PropertySheets.Get(m_Resources.shaders.texture2dLerp);
propertySheet.properties.SetTexture(ShaderIDs.To, to);
propertySheet.properties.SetFloat(ShaderIDs.Interp, t);
m_Command.BlitFullscreenTriangle(from, renderTexture, propertySheet, 0);
return(renderTexture);
}
internal Texture Lerp(Texture from, Texture to, float t)
{
Assert.IsNotNull(from);
Assert.IsNotNull(to);
// Saves a potentially expensive fullscreen blit when using dirt textures & the likes
if (from == to)
{
return(from);
}
bool is3d = to is Texture3D ||
(to is RenderTexture && ((RenderTexture)to).volumeDepth > 1);
RenderTexture rt = null;
if (is3d)
{
int size = to.width;
rt = Get(RenderTextureFormat.ARGBHalf, size, size, size, true);
var compute = m_Resources.computeShaders.texture3dLerp;
int kernel = compute.FindKernel("KTexture3DLerp");
m_Command.SetComputeVectorParam(compute, "_Params", new Vector4(t, size, 0f, 0f));
m_Command.SetComputeTextureParam(compute, kernel, "_Output", rt);
m_Command.SetComputeTextureParam(compute, kernel, "_From", from);
m_Command.SetComputeTextureParam(compute, kernel, "_To", to);
int groupSizeXY = Mathf.CeilToInt(size / 8f);
int groupSizeZ = Mathf.CeilToInt(size / (RuntimeUtilities.isAndroidOpenGL ? 2f : 8f));
m_Command.DispatchCompute(compute, kernel, groupSizeXY, groupSizeXY, groupSizeZ);
}
else
{
var format = TextureFormatUtilities.GetUncompressedRenderTextureFormat(to);
rt = Get(format, to.width, to.height);
var sheet = m_PropertySheets.Get(m_Resources.shaders.texture2dLerp);
sheet.properties.SetTexture(ShaderIDs.To, to);
sheet.properties.SetFloat(ShaderIDs.Interp, t);
m_Command.BlitFullscreenTriangle(from, rt, sheet, 0);
}
return(rt);
}
internal Texture Lerp(Texture from, Texture to, float t)
{
Assert.IsNotNull(from);
Assert.IsNotNull(to);
bool is3d = to is Texture3D ||
(to is RenderTexture && ((RenderTexture)to).volumeDepth > 1);
RenderTexture rt = null;
bool isAndroidOpenGL = Application.platform == RuntimePlatform.Android && SystemInfo.graphicsDeviceType != GraphicsDeviceType.Vulkan;
if (is3d)
{
int size = to.width;
rt = Get(RenderTextureFormat.ARGBHalf, size, size, size, true);
var compute = m_Resources.computeShaders.texture3dLerp;
int kernel = compute.FindKernel("KTexture3DLerp");
m_Command.SetComputeVectorParam(compute, "_Params", new Vector4(t, size, 0f, 0f));
m_Command.SetComputeTextureParam(compute, kernel, "_Output", rt);
m_Command.SetComputeTextureParam(compute, kernel, "_From", from);
m_Command.SetComputeTextureParam(compute, kernel, "_To", to);
int groupSizeXY = Mathf.CeilToInt(size / 8f);
int groupSizeZ = Mathf.CeilToInt(size / (isAndroidOpenGL ? 2f : 8f));
m_Command.DispatchCompute(compute, kernel, groupSizeXY, groupSizeXY, groupSizeZ);
}
else
{
var format = TextureFormatUtilities.GetUncompressedRenderTextureFormat(to);
rt = Get(format, to.width, to.height);
var sheet = m_PropertySheets.Get(m_Resources.shaders.texture2dLerp);
sheet.properties.SetTexture(ShaderIDs.To, to);
sheet.properties.SetFloat(ShaderIDs.Interp, t);
m_Command.BlitFullscreenTriangle(from, rt, sheet, 0);
}
return(rt);
}
