I can draw one texture on com.jogamp.opengl.awt.GLCanvas but i want to update texture when bufferedimage changed. I wrote display method like this:
public void display(GLAutoDrawable glAutoDrawable) {
try {
if (gl2 == null) {
gl2 = glAutoDrawable.getGL().getGL2(); // get the OpenGL 2 graphics context
}
gl2.glClear(gl2.GL_COLOR_BUFFER_BIT | gl2.GL_DEPTH_BUFFER_BIT); // clear color and depth buffers
gl2.glLoadIdentity(); // reset the model-view matrix
if (image != null) {
if (image != null) {
int[] pixels_raw = new int[this.camPanel.width * this.camPanel.height];
pixels_raw = image.getRGB(0, 0, this.camPanel.width, this.camPanel.height, null, 0, this.camPanel.width);
pixels.rewind();
for (int j = this.camPanel.height - 1; j >= 0; j--) {
for (int i = 0; i < this.camPanel.width; i++) {
int pixel = pixels_raw[j * this.camPanel.width + i];
pixels.put((byte) ((pixel >> 16) & 0xFF));//RED
pixels.put((byte) ((pixel >> 8) & 0xFF));//GREEN
pixels.put((byte) ((pixel >> 0) & 0xFF));//BLUE
pixels.put((byte) ((pixel >> 24) & 0xFF));//ALPHA
}
}
pixels.flip();
// gl2.glBindTexture(gl2.GL_TEXTURE_2D, 1);
// gl2.glTexParameterf(gl2.GL_TEXTURE_2D, gl2.GL_TEXTURE_WRAP_S, gl2.GL_REPEAT);
// gl2.glTexParameterf(gl2.GL_TEXTURE_2D, gl2.GL_TEXTURE_WRAP_T, gl2.GL_REPEAT);
// gl2.glTexParameterf(gl2.GL_TEXTURE_2D, gl2.GL_TEXTURE_MIN_FILTER, gl2.GL_NEAREST);
// gl2.glTexParameterf(gl2.GL_TEXTURE_2D, gl2.GL_TEXTURE_MAG_FILTER, gl2.GL_NEAREST);
gl2.glTexImage2D(gl2.GL_TEXTURE_2D, 0, gl2.GL_RGBA, this.camPanel.width, this.camPanel.height, 0, gl2.GL_RGBA, gl2.GL_UNSIGNED_BYTE, pixels);
// gl2.glFlush();
System.out.println("Error " + gl2.glGetError());
pixels.clear();
}
gl2.glEnd();
}
} catch (Exception e) {
e.printStackTrace();
}
}
When image changed, i am calling display metod but there is always black screen and gives error : "JAWTWindow: surface change 0x17011262 -> 0x7e011c18" "Error 1282"
The error is thrown by the call to glEnd(). The docs states:
GL_INVALID_OPERATION is generated if glEnd is executed without being preceded by a glBegin.
Since the code only contains a glEnd() but no glBegin, this call is invalid.