public void Editor_DrawLivePreview(GStylizedTerrain terrain, GTexturePainterArgs args, Camera cam)
{
#if UNITY_EDITOR
Vector2[] uvCorners = new Vector2[args.WorldPointCorners.Length];
for (int i = 0; i < uvCorners.Length; ++i)
{
uvCorners[i] = terrain.WorldPointToUV(args.WorldPointCorners[i]);
}
Rect dirtyRect = GUtilities.GetRectContainsPoints(uvCorners);
if (!dirtyRect.Overlaps(new Rect(0, 0, 1, 1)))
{
return;
}
Material mat = GInternalMaterials.SplatPainterMaterial;
mat.SetTexture("_Mask", args.Mask);
mat.SetFloat("_Opacity", args.Opacity);
int controlMapResolution = terrain.TerrainData.Shading.SplatControlResolution;
int controlMapCount = terrain.TerrainData.Shading.SplatControlMapCount;
for (int i = 0; i < controlMapCount; ++i)
{
Texture2D splatControl = terrain.TerrainData.Shading.GetSplatControl(i);
RenderTexture rt = GTerrainTexturePainter.Internal_GetRenderTexture(terrain, controlMapResolution, i);
GCommon.CopyToRT(splatControl, rt);
mat.SetTexture("_MainTex", splatControl);
if (args.SplatIndex / 4 == i)
{
mat.SetInt("_ChannelIndex", args.SplatIndex % 4);
}
else
{
mat.SetInt("_ChannelIndex", -1);
}
int pass =
args.ActionType == GPainterActionType.Normal ? 0 :
args.ActionType == GPainterActionType.Negative ? 1 :
args.ActionType == GPainterActionType.Alternative ? 2 : 0;
GCommon.DrawQuad(rt, uvCorners, mat, pass);
}
Texture[] controls = new Texture[controlMapCount];
for (int i = 0; i < controlMapCount; ++i)
{
controls[i] = GTerrainTexturePainter.Internal_GetRenderTexture(terrain, controlMapResolution, i);
}
GLivePreviewDrawer.DrawSplatLivePreview(terrain, cam, controls, dirtyRect);
#endif
}
private void DrawLivePreview(GStylizedTerrain t, Camera cam)
{
if (t.transform.rotation != Quaternion.identity ||
t.transform.lossyScale != Vector3.one)
{
return;
}
instance.GetQuad(worldPoints);
for (int i = 0; i < normalizedPoints.Length; ++i)
{
normalizedPoints[i] = t.WorldPointToUV(worldPoints[i]);
}
Rect dirtyRect = GUtilities.GetRectContainsPoints(normalizedPoints);
if (instance.Channel == GTextureStampChannel.AlbedoMetallicSmoothness)
{
int albedoResolution = t.TerrainData.Shading.AlbedoMapResolution;
FilterMode albedoFilter = t.TerrainData.Shading.AlbedoMap.filterMode;
int metallicResolution = t.TerrainData.Shading.MetallicMapResolution;
FilterMode metallicFilter = t.TerrainData.Shading.MetallicMap.filterMode;
Texture albedo = GetPreviewTexture(t, "albedo", albedoResolution, albedoFilter);
Texture metallic = GetPreviewTexture(t, "metallic", metallicResolution, metallicFilter);
GLivePreviewDrawer.DrawAMSLivePreview(t, cam, albedo, metallic, dirtyRect);
}
else if (instance.Channel == GTextureStampChannel.Splat)
{
int controlMapResolution = t.TerrainData.Shading.SplatControlResolution;
Texture[] controls = new Texture[t.TerrainData.Shading.SplatControlMapCount];
for (int i = 0; i < controls.Length; ++i)
{
Texture currentControl = t.TerrainData.Shading.GetSplatControl(i);
controls[i] = GetPreviewTexture(t, "splatControl" + i, controlMapResolution, currentControl.filterMode);
}
GLivePreviewDrawer.DrawSplatLivePreview(t, cam, controls, dirtyRect);
}
}
private void SetupSplatPreview(GStylizedTerrain t, Camera cam, Rect dirtyRect)
{
Material mat = t.TerrainData.Shading.MaterialToRender;
if (mat == null)
{
return;
}
int controlMapResolution = t.TerrainData.Shading.SplatControlResolution;
int controlMapCount = t.TerrainData.Shading.SplatControlMapCount;
if (controlMapCount == 0)
{
return;
}
RenderTexture[] rtControls = new RenderTexture[controlMapCount];
for (int i = 0; i < controlMapCount; ++i)
{
rtControls[i] = GetPreviewTexture(t, "splatControl" + i, controlMapResolution, t.TerrainData.Shading.SplatControls[i].filterMode);
}
instance.Internal_ApplySplat(t, instance.SplineCreator.Editor_Vertices, rtControls);
GLivePreviewDrawer.DrawSplatLivePreview(t, cam, rtControls, dirtyRect);
}