#JOGL glUniform4fv issue

6 messages · Page 1 of 1 (latest)

deft widget
#

Here's my set uniform code:

    public static boolean setUniform(GL3 gl, String name, Object value) {
        if (shaderProgram == -1) {
            throw new IllegalStateException("Shaders not initialized yet");
        }

        gl.glUseProgram(shaderProgram);

        int location;

        if (!uniforms.containsKey(name)) {
            location = gl.glGetUniformLocation(shaderProgram, name);

            if (location == -1) {
                return false;
            }

            uniforms.put(name, location);
        } else {
            location = uniforms.get(name);
        }

                double[][] matrix = (double[][]) matrix;

        if (matrix.length != 4 || matrix[0].length != 4) {
            throw new UnsupportedOperationException("Unsupported matrix size " + matrix[0].length + "x" + matrix.length);
        }

        float[] fMat = new float[16];

        for (int i = 0; i < 4; i++) {
            for (int j = 0; j < 4; j++) {
                fMat[j * 4 + i] = matrix[i][j];
            }
        }

        gl.glUniform4fv(location, 1, fMat, 0);

        return true;
    }

And here's the error:
com.jogamp.opengl.GLException: Thread[#39,AWT-EventQueue-0,6,main] glGetError() returned the following error codes after a call to glUniform4fv(<int> 0x0, <int> 0x1, <[F>, <int> 0x0): GL_INVALID_OPERATION ( 1282 0x502)
Why is there this issue? Shader init code in comment.

coral skyBOT
#

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deft widget
# 
shaderProgram = gl.glCreateProgram();

if (shaderProgram < 1) {
    throw new IllegalStateException("program");
}

vertexId = gl.glCreateShader(gl.GL_VERTEX_SHADER);
gl.glShaderSource(vertexId, 1, new String[]{vertexCode}, new int[]{vertexCode.length()}, 0);
gl.glCompileShader(vertexId);

int[] compiled = new int[1];
gl.glGetShaderiv(vertexId, gl.GL_COMPILE_STATUS, compiled, 0);

if (compiled[0] == 0) {
    int[] logLength = new int[1];
    gl.glGetShaderiv(vertexId, gl.GL_INFO_LOG_LENGTH, logLength, 0);

    byte[] log = new byte[logLength[0]];

    gl.glGetShaderInfoLog(vertexId, logLength[0], null, 0, log, 0);

    throw new IllegalStateException("Vertex shader error: \n" + new String(log));
}

fragmentId = gl.glCreateShader(gl.GL_FRAGMENT_SHADER);
gl.glShaderSource(fragmentId, 1, new String[]{fragmentCode}, new int[]{fragmentCode.length()}, 0);
gl.glCompileShader(fragmentId);

gl.glGetShaderiv(fragmentId, gl.GL_COMPILE_STATUS, compiled, 0);

if (compiled[0] == 0) {
    int[] logLength = new int[1];
    gl.glGetShaderiv(fragmentId, gl.GL_INFO_LOG_LENGTH, logLength, 0);

    byte[] log = new byte[logLength[0]];

    gl.glGetShaderInfoLog(fragmentId, logLength[0], null, 0, log, 0);

    throw new IllegalStateException("Fragment shader error: \n" + new String(log));
}

gl.glAttachShader(shaderProgram, vertexId);
gl.glAttachShader(shaderProgram, fragmentId);

gl.glLinkProgram(shaderProgram);
gl.glValidateProgram(shaderProgram);

gl.glUseProgram(shaderProgram);
# 
public static int shaderProgram = -1, vertexId = -1, fragmentId = -1;

public static final String vertexCode = """
        #version 330 core

        layout (location = 0) in vec3 pos;
        layout (location = 1) in vec2 texCoord;
            
        out vec2 tex;

        uniform mat4 proj;
        uniform mat4 trans;

        void main()
        {
            gl_Position = proj * trans * vec4(pos, 1);
            tex = texCoord;
        }
        """, fragmentCode = """
        #version 330 core
            
        in vec2 tex;
        uniform sampler2D atlas;
            
        void main()
        {
            gl_FragColor = texture2D(atlas, tex);
        }
        """;
deft widget
#

I jiggled the handle a bit and got it working. Weird.