another capability check added to SimpleSahderAppearance auto build

1 files changed, 3 insertions, 0 deletions

diff --git a/src/main/java/org/jogamp/java3d/utils/shader/SimpleShaderAppearance.java b/src/main/java/org/jogamp/java3d/utils/shader/SimpleShaderAppearance.java
index a2f7f25..e5da160 100644
--- a/src/main/java/org/jogamp/java3d/utils/shader/SimpleShaderAppearance.java
+++ b/src/main/java/org/jogamp/java3d/utils/shader/SimpleShaderAppearance.java
@@ -382,6 +382,9 @@ public class SimpleShaderAppearance extends ShaderAppearance
 					&& (this.getPolygonAttributes() == null // no poly attributes
 							|| (!this.getPolygonAttributes().isLive() && !this.getPolygonAttributes().isCompiled()) // poly attributes are not yet live
 							|| this.getPolygonAttributes().getCapability(PolygonAttributes.ALLOW_MODE_READ))//poly attributes are live but can be read
+					
+					// finally we must be allowed to set the shader program while live
+					&& ((!this.isLive() && !this.isCompiled()) || (this.getCapability(ALLOW_SHADER_PROGRAM_WRITE)))
 			)
 			{
 				boolean hasTexture = this.getTexture() != null || this.getTextureUnitCount() > 0;