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Diffstat (limited to 'www/j3d1_4/shaders.html')
| -rw-r--r-- | www/j3d1_4/shaders.html | 42 |
1 files changed, 22 insertions, 20 deletions
diff --git a/www/j3d1_4/shaders.html b/www/j3d1_4/shaders.html index cca439a..ea88188 100644 --- a/www/j3d1_4/shaders.html +++ b/www/j3d1_4/shaders.html @@ -13,14 +13,14 @@ programmable shading specification for Java 3D<sup><font size="-2">TM</font></sup> 1.4 that you can review, you are in the wrong place; or more accurately, the right -place at the wrong time. Come back in about 2 months and things should +place at the wrong time. Come back in about 1-2 months and things should be in state where you can review a fairly complete draft specification. If, on the other hand, you'd like to help us define and evolve the programmable shading API in Java 3D 1.4, please read on. </p> -<p>This is a very rough first draft of what we are thinking in terms +<p>This is a rough first draft of what we are thinking in terms of programmable shader support in Java 3D 1.4. As we mentioned at JavaOne, we plan to do the 1.4 API specification under the auspices of the Java Community Process (JCP). However, we very much want to @@ -45,18 +45,18 @@ in Java 3D is:</p> public abstract class Shader extends NodeComponent </pre> </ul> -<li>Concrete GL2 shader classes:</li> +<li>Concrete GLSL shader classes:</li> <ul> -<pre>public class GL2ShaderProgram extends ShaderProgram - method: {add/remove/get}Shader(GL2Shader) // set of shader objs - method: {add/remove}ErrorListener(GL2ErrorListener) +<pre>public class GLSLShaderProgram extends ShaderProgram + method: {add/remove/get}Shader(GLSLShader) // set of shader objs + method: {add/remove}ErrorListener(GLSLErrorListener) method: validate(Canvas3D) ??? -public abstract class GL2Shader extends Shader - public class GL2VertexShader extends GL2Shader +public abstract class GLSLShader extends Shader + public class GLSLVertexShader extends GLSLShader method: set/getShaderSource(String) method: validate(Canvas3D) ??? - public class GL2FragmentShader extends GL2Shader + public class GLSLFragmentShader extends GLSLShader method: set/getShaderSource(String) method: validate(Canvas3D) ??? </pre> @@ -105,23 +105,23 @@ String fragmentShaderFile = "my-fragment-shader-file-name"; String vertexShaderSource; String fragmentShaderSource; -// Read CG vertex and fragment shader source code from text files +// Read GLSL vertex and fragment shader source code from text files vertexShaderSource = TextFileUtils.readFully(vertexShaderFile); fragmentShaderSource = TextFileUtils.readFully(fragmentShaderSource); -// Create CG vertex and fragment shader objects using the given source code -CgVertexShader vertexShader = new CgVertexShader(vertexShaderSource); -CgFragmentShader fragmentShader = new CgFragmentShader(fragmentShaderSource); +// Create GLSL vertex and fragment shader objects using the given source code +GLSLVertexShader vertexShader = new GLSLVertexShader(vertexShaderSource); +GLSLFragmentShader fragmentShader = new GLSLFragmentShader(fragmentShaderSource); -// Create the CG shader program object and attach the vertex and +// Create the GLSL shader program object and attach the vertex and // fragment shader objects; add an error listener -CgShaderProgram shaderProgram = new CgShaderProgram(); +GLSLShaderProgram shaderProgram = new GLSLShaderProgram(); shaderProgram.setVertexShader(vertexShader); shaderProgram.setFragmentShader(fragmentShader); -shaderProgram.addErrorListener(myCgErrorListener); +shaderProgram.addErrorListener(myGLSLErrorListener); -// Use CG shader program object in appearance -appearance.setShaderProgram(shaderProgram); +// Use GLSL shader program object in appearance +shaderAppearance.setShaderProgram(shaderProgram); </pre> </ul> <h4>Shader Parameters</h4> @@ -144,7 +144,7 @@ etc. Several Java 3D state attributes are automatically available to the shader program as pre-defined uniform parameters. The application doesn't need to do anything to pass these parameters in to the shader program. The implementation of each shader language (e.g., -Cg, GL2) defines its own mapping from Java 3D attribute to uniform +Cg, GLSL) defines its own mapping from Java 3D attribute to uniform variable name.<br> <br> We need additional API to allow applications to pass in uniform @@ -165,7 +165,7 @@ Attribute<br> <td style="vertical-align: top; text-decoration: underline;">Cg shader variable<br> </td> -<td style="vertical-align: top; text-decoration: underline;">GL2 +<td style="vertical-align: top; text-decoration: underline;">GLSL shader variable<br> </td> </tr> @@ -205,5 +205,7 @@ varying parameters...<br> TODO: Finish this...<br> </ol> <p>TODO: more info here. </p> +<p><font color="gray">Page last updated — $Date$ </font> +</p> </body> </html> |