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ShaderNodes now move all the declared extensions at the top of the generated shader source

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This commit is contained in:
Nehon 2016-10-09 20:12:39 +02:00
parent dd8271e8b3
commit da5e4a18c7
1 changed files with 23 additions and 2 deletions
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25
jme3-core/src/main/java/com/jme3/shader/ShaderGenerator.java
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@ -38,6 +38,7 @@ import com.jme3.material.Technique;
import com.jme3.material.TechniqueDef;
import com.jme3.shader.Shader.ShaderType;
import java.util.List;
import java.util.regex.*;
/**
* This class is the base for a shader generator using the ShaderNodes system,
@ -59,7 +60,11 @@ public abstract class ShaderGenerator {
/**
* the technique def to use for the shader generation
*/
protected TechniqueDef techniqueDef = null;
protected TechniqueDef techniqueDef = null;
/**
* Extension pattern
*/
Pattern extensions = Pattern.compile("(#extension.*\\s+)");
/**
* Build a shaderGenerator
@ -142,7 +147,23 @@ public abstract class ShaderGenerator {
sourceDeclaration.append(source);
return sourceDeclaration.toString();
return moveExtensionsUp(sourceDeclaration);
}
/**
* parses the source and moves all the extensions at the top of the shader source as having extension declarations
* in the middle of a shader is against the specs and not supported by all drivers.
* @param sourceDeclaration
* @return
*/
private String moveExtensionsUp(StringBuilder sourceDeclaration) {
Matcher m = extensions.matcher( sourceDeclaration.toString());
StringBuilder finalSource = new StringBuilder();
while(m.find()){
finalSource.append(m.group());
}
finalSource.append(m.replaceAll(""));
return finalSource.toString();
}
/**