diff options
Diffstat (limited to 'src/jogl/classes/com')
| -rw-r--r-- | src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderState.java | 103 |
1 files changed, 59 insertions, 44 deletions
diff --git a/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderState.java b/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderState.java index 9d71ee276..a221cd51e 100644 --- a/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderState.java +++ b/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderState.java @@ -366,14 +366,13 @@ public class ShaderState { if(null==shaderProgram) throw new GLException("No program is attached"); if(shaderProgram.linked()) throw new GLException("Program is already linked"); final String name = data.getName(); - final Integer loc = new Integer(location); - activeAttribLocationMap.put(name, loc); + activeAttribLocationMap.put(name, new Integer(location)); data.setLocation(gl, shaderProgram.program(), location); activeAttribDataMap.put(data.getName(), data); } /** - * Gets the location of a shader attribute.<br> + * Gets the location of a shader attribute with given <code>name</code>.<br> * Uses either the cached value {@link #getCachedAttribLocation(String)} if valid, * or the GLSL queried via {@link GL2ES2#glGetAttribLocation(int, String)}.<br> * The location will be cached. @@ -395,8 +394,7 @@ public class ShaderState { if(!shaderProgram.linked()) throw new GLException("Program is not linked"); location = gl.glGetAttribLocation(shaderProgram.program(), name); if(0<=location) { - Integer idx = new Integer(location); - activeAttribLocationMap.put(name, idx); + activeAttribLocationMap.put(name, new Integer(location)); if(DEBUG) { System.err.println("ShaderState: glGetAttribLocation: "+name+", loc: "+location); } @@ -409,7 +407,7 @@ public class ShaderState { } return location; } - + /** * Validates and returns the location of a shader attribute.<br> * Uses either the cached value {@link #getCachedAttribLocation(String)} if valid, @@ -622,11 +620,12 @@ public class ShaderState { } /** - * Set the {@link GLArrayData} vertex attribute data. - * - * This method uses the {@link GLArrayData}'s location if set. - * If data location is unset it will be retrieved via {@link #getAttribLocation(GL2ES2, GLArrayData)}, set - * and cached in this state. + * Set the {@link GLArrayData} vertex attribute data, if it's location is valid, i.e. ≥ 0. + * <p> + * This method uses the {@link GLArrayData}'s location if valid, i.e. ≥ 0.<br/> + * If data's location is invalid, it will be retrieved via {@link #getAttribLocation(GL2ES2, GLArrayData)}, + * set and cached in this state. + * </p> * * @return false, if the location could not be determined, otherwise true * @@ -713,12 +712,14 @@ public class ShaderState { } private final void relocateAttribute(GL2ES2 gl, GLArrayData attribute) { - // get new location .. + // get new location .. note: 'activeAttribLocationMap' is cleared before final String name = attribute.getName(); - final int loc = getAttribLocation(gl, name); - attribute.setLocation(loc); - + final int loc = attribute.setLocation(gl, shaderProgram.program()); if(0<=loc) { + activeAttribLocationMap.put(name, new Integer(loc)); + if(DEBUG) { + System.err.println("ShaderState: relocateAttribute: "+name+", loc: "+loc); + } if(isVertexAttribArrayEnabled(name)) { // enable attrib, VBO and pass location/data gl.glEnableVertexAttribArray(loc); @@ -737,13 +738,20 @@ public class ShaderState { /** * Reset all previously enabled mapped vertex attribute data. * - * <p>Attribute data is bound to the GL state</p> - * <p>Attribute location is bound to the program</p> + * <p> + * Attribute data is bound to the GL state, i.e. VBO data itself will not be updated. + * </p> + * + * <p> + * Attribute location and it's data assignment is bound to the program, + * hence both are updated. + * </p> + * + * <p> + * Note: Such update could only be prevented, + * if tracking am attribute/program dirty flag. + * </p> * - * <p>However, since binding an attribute to a location via {@link #bindAttribLocation(GL2ES2, int, GLArrayData)} - * <i>must</i> happen before linking <b>and</b> we try to promote the attributes to the new program, - * we have to gather the probably new location etc.</p> - * * @throws GLException is the program is not linked * * @see #attachShaderProgram(GL2ES2, ShaderProgram) @@ -835,7 +843,7 @@ public class ShaderState { } /** - * Gets the location of a shader uniform.<br> + * Gets the location of a shader uniform with given <code>name</code>.<br> * Uses either the cached value {@link #getCachedUniformLocation(String)} if valid, * or the GLSL queried via {@link GL2ES2#glGetUniformLocation(int, String)}.<br> * The location will be cached. @@ -902,8 +910,7 @@ public class ShaderState { if(!shaderProgram.linked()) throw new GLException("Program is not linked"); location = data.setLocation(gl, shaderProgram.program()); if(0<=location) { - Integer idx = new Integer(location); - activeUniformLocationMap.put(name, idx); + activeUniformLocationMap.put(name, new Integer(location)); } else if(verbose) { System.err.println("ShaderState: glUniform failed, no location for: "+name+", index: "+location); if(DEBUG) { @@ -916,19 +923,14 @@ public class ShaderState { } /** - * Set the uniform data. - * - * Even if the uniform is not found in the current shader, - * it is stored in this state. - * - * @param data the GLUniforms's name must match the uniform one, - * it's index will be set with the uniforms's location, - * if found. - * - * - * @return false, if the name is not found, otherwise true + * Set the uniform data, if it's location is valid, i.e. ≥ 0. + * <p> + * This method uses the {@link GLUniformData}'s location if valid, i.e. ≥ 0.<br/> + * If data's location is invalid, it will be retrieved via {@link #getUniformLocation(GL2ES2, GLUniformData)}, + * set and cached in this state. + * </p> * - * @throws GLException if the program is not in use + * @return false, if the location could not be determined, otherwise true * * @see #glGetUniformLocation * @see javax.media.opengl.GL2ES2#glGetUniformLocation @@ -948,10 +950,11 @@ public class ShaderState { System.err.println("ShaderState: glUniform: "+data); } gl.glUniform(data); + return true; } - return true; + return false; } - + /** * Get the uniform data, previously set. * @@ -973,10 +976,15 @@ public class ShaderState { /** * Reset all previously mapped uniform data - * + * <p> * Uniform data and location is bound to the program, - * hence both are updated here - * + * hence both are updated. + * </p> + * <p> + * Note: Such update could only be prevented, + * if tracking a uniform/program dirty flag. + * </p> + * * @throws GLException is the program is not in use * * @see #attachShaderProgram(GL2ES2, ShaderProgram) @@ -988,9 +996,16 @@ public class ShaderState { iter.next().setLocation(-1); } for(Iterator<GLUniformData> iter = activeUniformDataMap.values().iterator(); iter.hasNext(); ) { - final GLUniformData uniform = iter.next(); - uniform.setLocation(-1); - uniform(gl, uniform); + final GLUniformData data = iter.next(); + final int loc = data.setLocation(gl, shaderProgram.program()); + if( 0 <= loc ) { + // only pass the data, if the uniform exists in the current shader + activeUniformLocationMap.put(data.getName(), new Integer(loc)); + if(DEBUG) { + System.err.println("ShaderState: resetAllUniforms: "+data); + } + gl.glUniform(data); + } } } |