Java Code Examples for com.jogamp.opengl.GL3#glUniformMatrix4fv()

@Override
public void drawBatch(final GL3 gl, final Camera camera, final Matrix44f mvMatrix, final Matrix44f pMatrix) {

    if (batch.isDrawable()) {
        gl.glUseProgram(shader);
        gl.glUniformMatrix4fv(shaderMVMatrix, 1, false, mvMatrix.a, 0);
        gl.glUniformMatrix4fv(shaderPMatrix, 1, false, pMatrix.a, 0);
        gl.glUniform1f(shaderVisibilityLow, camera.getVisibilityLow());
        gl.glUniform1f(shaderVisibilityHigh, camera.getVisibilityHigh());
        gl.glUniform1f(shaderMorphMix, camera.getMix());
        gl.glUniform1i(shaderXyzTexture, TextureUnits.VERTICES);
        gl.glUniform1i(shaderImagesTexture, TextureUnits.ICONS);
        gl.glUniform1f(shaderScale, blazeSize);
        gl.glUniform1f(shaderOpacity, blazeOpacity);

        gl.glDisable(GL3.GL_DEPTH_TEST);
        batch.draw(gl);
        gl.glEnable(GL3.GL_DEPTH_TEST);
    }
}
 

private void renderFBO(GL3 gl3, int framebuffer) {

        Mat4 perspective = glm.perspective_((float) Math.PI * 0.25f, (float) FRAMEBUFFER_SIZE.x / FRAMEBUFFER_SIZE.y,
                0.1f, 100.0f);
        Mat4 model = new Mat4(1.0f).scale(new Vec3(1.0f));
        Mat4 mvp = perspective.mul(viewMat4()).mul(model);

        gl3.glUniformMatrix4fv(uniformMvp, 1, false, mvp.toFa_(), 0);

        gl3.glViewport(0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y);
        gl3.glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
        gl3.glClearBufferfv(GL_COLOR, 0, new float[]{0.0f, 0.5f, 1.0f, 1.0f}, 0);

        gl3.glActiveTexture(GL_TEXTURE0);
        gl3.glBindTexture(GL_TEXTURE_2D, textureName.get(Texture.DIFFUSE));

        gl3.glBindVertexArray(vertexArrayName.get(0));

        gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 1);
    }
 

private void renderFB(GL3 gl3, int textureName) {

        Mat4 projection = glm.ortho_(-1.1f, 1.1f, 1.1f, -1.1f, 0.0f, 10.0f);
        Mat4 view = new Mat4(1.0f).translate(new Vec3(0.0f, 0.0f, -cameraDistance() * 0.1f));
        Mat4 model = new Mat4(1.0f);
        Mat4 mvp = projection.mul(view).mul(model);

        gl3.glUniformMatrix4fv(uniformMvp, 1, false, mvp.toFa_(), 0);

        gl3.glViewport(0, 0, windowSize.x, windowSize.y);
        gl3.glBindFramebuffer(GL_FRAMEBUFFER, 0);

        gl3.glActiveTexture(GL_TEXTURE0);
        gl3.glBindTexture(GL_TEXTURE_2D, textureName);
        gl3.glBindVertexArray(vertexArrayName.get(0));

        gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 1);

        checkError(gl3, "renderFB");
    }
 

private void renderFBO(GL3 gl3, int framebuffer) {

        Mat4 projection = glm.ortho_(-1.1f, 1.1f, 1.1f, -1.1f, 1.1f, -1.1f);
        Mat4 view = new Mat4(1.0f);
        Mat4 model = new Mat4(1.0f).rotate(-0.3f, new Vec3(0.f, 0.f, 1.f));
        Mat4 mvp = projection.mul(view).mul(model);

        gl3.glUseProgram(programName[Program.RENDER]);
        gl3.glUniform1i(uniformDiffuse[Program.RENDER], 0);
        gl3.glUniformMatrix4fv(uniformMvp[Program.RENDER], 1, false, mvp.toFa_(), 0);

        gl3.glViewport(0, 0, windowSize.x / framebufferSize, windowSize.y / framebufferSize);
        gl3.glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
        gl3.glClearBufferuiv(GL_COLOR, 0, new int[]{0, 128, 255, 255}, 0);

        gl3.glActiveTexture(GL_TEXTURE0);
        gl3.glBindTexture(GL_TEXTURE_2D, textureName.get(Texture.DIFFUSE));
        gl3.glBindVertexArray(vertexArrayName.get(0));

        gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 1);

        checkError(gl3, "renderFBO");
    }
 

@Override
public void drawBatch(final GL3 gl, final Camera camera, final Matrix44f mvMatrix, final Matrix44f pMatrix) {

    if (batch.isDrawable()) {
        gl.glUseProgram(shader);

        // Uniform variables
        if (drawForHitTest) {
            gl.glUniform1i(shaderLocDrawHitTest, GL3.GL_TRUE);
            drawForHitTest = false;
        } else {
            gl.glUniform1i(shaderLocDrawHitTest, GL3.GL_FALSE);
        }
        gl.glUniformMatrix4fv(shaderMVMatrix, 1, false, mvMatrix.a, 0);
        gl.glUniformMatrix4fv(shaderPMatrix, 1, false, pMatrix.a, 0);
        gl.glUniform1f(shaderVisibilityLow, camera.getVisibilityLow());
        gl.glUniform1f(shaderVisibilityHigh, camera.getVisibilityHigh());
        gl.glUniform1f(shaderMorphMix, camera.getMix());
        gl.glUniform1i(shaderXyzTexture, TextureUnits.VERTICES);
        gl.glUniform1i(shaderImagesTexture, TextureUnits.ICONS);
        batch.draw(gl);
    }
}
 

@Override
protected boolean render(GL gl) {

    GL3 gl3 = (GL3) gl;

    Mat4 projection = glm.perspective_((float) Math.PI * 0.25f, (float) windowSize.x / windowSize.y, 0.1f, 1000.0f);
    Mat4 model = new Mat4(1.0f);
    Mat4 mvp = projection.mul(viewMat4()).mul(model);

    gl3.glClearBufferfv(GL_COLOR, 0, clearColor.put(0, 1).put(1, .5f).put(2, 0).put(3, 1));

    gl3.glUseProgram(programName);
    gl3.glUniformMatrix4fv(uniformMvp, 1, false, mvp.toFa_(), 0);
    gl3.glUniform1i(uniformDiffuse, 0);

    gl3.glActiveTexture(GL_TEXTURE0);
    gl3.glBindTexture(GL_TEXTURE_2D, texture2dName.get(0));

    gl3.glBindVertexArray(vertexArrayName.get(0));

    for (int index = 0; index < Viewport.MAX; ++index) {
        gl3.glViewport(viewport[index].x, viewport[index].y, viewport[index].z, viewport[index].w);

        gl3.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, swizzleR[index]);
        gl3.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, swizzleG[index]);
        gl3.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, swizzleB[index]);
        gl3.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, swizzleA[index]);

        gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 1);
    }

    return true;
}
 

private void renderFBO(GL3 gl3, int framebuffer) {

        Mat4 perspective = glm.perspective_((float) Math.PI * 0.25f, (float) FRAMEBUFFER_SIZE.x / FRAMEBUFFER_SIZE.y,
                0.1f, 100.0f);
        Mat4 model = new Mat4(1.0f).scale(new Vec3(1.0f));
        Mat4 mvp = perspective.mul(viewMat4()).mul(model);

        gl3.glEnable(GL_DEPTH_TEST);

        gl3.glUseProgram(programName[Program.THROUGH]);
        gl3.glUniform1i(uniformDiffuse[Program.THROUGH], 0);
        gl3.glUniformMatrix4fv(uniformMvp[Program.THROUGH], 1, false, mvp.toFa_(), 0);

        gl3.glViewport(0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y);

        gl3.glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
        float[] depth = new float[]{1.0f};
        gl3.glClearBufferfv(GL_DEPTH, 0, depth, 0);
        gl3.glClearBufferfv(GL_COLOR, 0, new float[]{1.0f, 0.5f, 0.0f, 1.0f}, 0);

        gl3.glActiveTexture(GL_TEXTURE0);
        gl3.glBindTexture(GL_TEXTURE_2D, textureName.get(Texture.DIFFUSE));
        gl3.glBindVertexArray(vertexArrayName.get(0));

        gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 5);

        gl3.glDisable(GL_DEPTH_TEST);
    }
 

@Override
protected boolean render(GL gl) {

    GL3 gl3 = (GL3) gl;

    Mat4 projection = glm.perspective_((float) Math.PI * 0.25f, (float) windowSize.x / windowSize.y, 0.1f, 1000.0f);
    Mat4 model = new Mat4(1.0f);
    Mat4 mvp = projection.mul(viewMat4()).mul(model);

    gl3.glClearBufferfv(GL_COLOR, 0, clearColor.put(0, 1).put(1, .5f).put(2, 0).put(3, 1));

    gl3.glUseProgram(programName);
    gl3.glUniformMatrix4fv(uniformMvp, 1, false, mvp.toFa_(), 0);
    gl3.glUniform1i(uniformDiffuse, 0);

    gl3.glActiveTexture(GL_TEXTURE0);
    gl3.glBindTexture(GL_TEXTURE_2D, texture2dName.get(0));

    gl3.glBindVertexArray(vertexArrayName.get(0));

    for (int Index = 0; Index < Viewport.MAX; ++Index) {
        gl3.glViewport(viewport[Index].x, viewport[Index].y, viewport[Index].z, viewport[Index].w);
        gl3.glBindSampler(0, samplerName.get(Index));
        gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 1);
    }

    return true;
}
 

@Override
protected boolean render(GL gl) {

    GL3 gl3 = (GL3) gl;

    Mat4 projection = glm.perspective_((float) Math.PI * 0.25f, 4.0f / 3.0f, 0.1f, 1000.0f);
    Mat4 model = new Mat4(1.0f);
    Mat4 mvp = projection.mul(viewMat4()).mul(model);

    clearColor.put(new float[]{1.0f, 0.5f, 0.0f, 1.0f}).rewind();
    gl3.glClearBufferfv(GL_COLOR, 0, clearColor);

    // Bind the program for use
    gl3.glUseProgram(programName);
    gl3.glUniformMatrix4fv(uniformMvp, 1, false, mvp.toFa_(), 0);
    gl3.glUniform1i(uniformDiffuse, 0);

    gl3.glBindVertexArray(vertexArrayName.get(0));

    gl3.glActiveTexture(GL_TEXTURE0);
    for (int index = 0; index < Texture.MAX; ++index) {
        gl3.glViewport(viewport[index].x, viewport[index].y, viewport[index].z, viewport[index].w);
        gl3.glBindTexture(GL_TEXTURE_2D_ARRAY, textureName.get(index));
        gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 1);
    }

    return true;
}
 

@Override
protected boolean render(GL gl) {

    GL3 gl3 = (GL3) gl;

    Mat4 projection = glm.perspective_((float) Math.PI * 0.25f, 4.0f / 3.0f, 0.1f, 100.0f);
    Mat4 view = viewMat4();
    Mat4 model = new Mat4(1.0f);
    Mat4 mvp = projection.mul(view).mul(model);
    Mat4 mv = view.mul(model);

    gl3.glViewport(0, 0, windowSize.x, windowSize.y);
    gl3.glClearBufferfv(GL_COLOR, 0, clearColor);
    gl3.glClearBufferfv(GL_DEPTH, 0, clearDepth);

    gl3.glDisable(GL_SCISSOR_TEST);
    Vec3 cameraPosition = cameraPosition().negate();
    //glm::vec3 CameraPosition(glm::vec4(glm::normalize(glm::vec3(1.0)), 1.0) * this->view());

    gl3.glUseProgram(programName);
    gl3.glUniform3fv(uniformCameraPosition, 1, cameraPosition.toFa_(), 0);
    gl3.glUniformMatrix4fv(uniformMv, 1, false, mv.toFa_(), 0);
    gl3.glUniformMatrix4fv(uniformMvp, 1, false, mvp.toFa_(), 0);

    gl3.glBindVertexArray(vertexArrayName.get(0));

    gl3.glDrawArraysInstanced(GL_POINTS, 0, vertexCount, 1);

    return true;
}
 

private void renderFBO(GL3 gl3) {

        Mat4 perspective = glm.perspective_((float) Math.PI * 0.25f, (float) windowSize.x / windowSize.y, 0.1f, 100.0f);
        Mat4 model = new Mat4(1.0f);
        Mat4 mvp = perspective.mul(viewMat4()).mul(model);

        gl3.glUniformMatrix4fv(uniformMvp, 1, false, mvp.toFa_(), 0);

        gl3.glActiveTexture(GL_TEXTURE0);
        gl3.glBindTexture(GL_TEXTURE_2D, textureName.get(Texture.DIFFUSE));
        gl3.glBindVertexArray(vertexArrayName.get(0));

        gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 1);
    }
 

@Override
public void drawBatch(final GL3 gl, final Camera camera, final Matrix44f mvMatrix, final Matrix44f pMatrix) {

    if (topBatch.isDrawable() || bottomBatch.isDrawable()) {
        gl.glUseProgram(shader);

        // Let the glyph controller bind the glyph info and glyph image textures
        SharedDrawable.updateGlyphTextureController(gl);
        SharedDrawable.getGlyphTextureController().bind(gl, shaderGlyphInfoTexture, TextureUnits.GLYPH_INFO, shaderGlyphImageTexture, TextureUnits.GLYPHS);

        // Uniform variables
        gl.glUniformMatrix4fv(shaderMVMatrix, 1, false, mvMatrix.a, 0);
        gl.glUniformMatrix4fv(shaderPMatrix, 1, false, pMatrix.a, 0);
        gl.glUniformMatrix4fv(shaderLabelBottomInfo, 1, false, labelBottomInfo.a, 0);
        gl.glUniformMatrix4fv(shaderLabelTopInfo, 1, false, labelTopInfo.a, 0);
        gl.glUniform1f(shaderLocWidth, SharedDrawable.getGlyphManager().getWidthScalingFactor());
        gl.glUniform1f(shaderLocHeight, SharedDrawable.getGlyphManager().getHeightScalingFactor());
        gl.glUniform1f(shaderVisibilityLow, camera.getVisibilityLow());
        gl.glUniform1f(shaderVisibilityHigh, camera.getVisibilityHigh());
        gl.glUniform1f(shaderMorphMix, camera.getMix());
        gl.glUniform1i(shaderXyzTexture, TextureUnits.VERTICES);
        gl.glUniform1i(shaderBackgroundGlyphIndex, SharedDrawable.getLabelBackgroundGlyphPosition());
        gl.glUniform4fv(shaderBackgroundColor, 1, backgroundColor, 0);
        gl.glUniform4fv(shaderHighlightColor, 1, highlightColor, 0);

        if (topBatch.isDrawable()) {
            topBatch.draw(gl);
        }
        if (bottomBatch.isDrawable()) {
            bottomBatch.draw(gl);
        }
    }
}
 

@Override
protected boolean render(GL gl) {

    GL3 gl3 = (GL3) gl;

    Mat4 projection = glm.perspective_((float) Math.PI * 0.25f, 2.0f / 3.0f, 0.1f, 1000.0f);
    Mat4 model = new Mat4(1.0f);
    Mat4 mvp = projection.mul(viewMat4()).mul(model);

    gl3.glViewport(0, 0, windowSize.x, windowSize.y);
    clearColor.put(new float[]{1.0f, 0.5f, 0.0f, 1.0f}).rewind();
    gl3.glClearBufferfv(GL_COLOR, 0, clearColor);

    gl3.glActiveTexture(GL_TEXTURE0);
    gl3.glBindTexture(GL_TEXTURE_2D, textureName.get(0));

    gl3.glBindVertexArray(vertexArrayName.get(0));

    gl3.glUseProgram(programName[Program.OFFSET]);
    gl3.glUniform2iv(uniformOffset, 1, new int[]{48, -80}, 0);

    for (int i = 0; i < Program.MAX; ++i) {
        gl3.glUseProgram(programName[i]);
        gl3.glUniformMatrix4fv(uniformMvp[i], 1, false, mvp.toFa_(), 0);
        gl3.glUniform1i(uniformDiffuse[i], 0);

        gl3.glViewport(viewport[i].x, viewport[i].y, viewport[i].z, viewport[i].w);

        gl3.glDrawElementsInstancedBaseVertex(GL_TRIANGLES, elementCount, GL_UNSIGNED_INT, 0, 1, 0);
    }

    return true;
}
 

@Override
public void display(final GLAutoDrawable drawable, final Matrix44f mvpMatrix) {
    if (planeBatch.isDrawable()) {
        final GL3 gl = drawable.getGL().getGL3();

        gl.glActiveTexture(GL3.GL_TEXTURE0 + TextureUnits.PLANES);
        gl.glBindTexture(GL3.GL_TEXTURE_2D_ARRAY, textureName);

        gl.glUseProgram(shader);
        gl.glUniformMatrix4fv(shaderMVPMatrix, 1, false, mvpMatrix.a, 0);
        gl.glUniform1i(shaderImages, TextureUnits.PLANES);
        planeBatch.draw(gl);
    }
}
 

@Override
protected boolean render(GL gl) {

    GL3 gl3 = (GL3) gl;

    // Setup blending
    gl3.glEnable(GL_BLEND);
    gl3.glBlendEquation(GL_FUNC_ADD);
    gl3.glBlendFunc(GL_ONE, GL_SRC1_COLOR);

    Mat4 projection = glm.perspective_((float) Math.PI * 0.25f, 4.0f / 3.0f, 0.1f, 100.0f);
    Mat4 model = new Mat4(1.0f);
    Mat4 mvp = projection.mul(viewMat4()).mul(model);

    gl3.glViewport(0, 0, windowSize.x, windowSize.y);
    gl3.glClearBufferfv(GL_COLOR, 0, clearColor.put(0, 1).put(1, 1).put(2, 1).put(3, 1));

    gl3.glUseProgram(programName);
    gl3.glUniformMatrix4fv(uniformMvp, 1, false, mvp.toFa_(), 0);
    gl3.glUniform1i(uniformDiffuse, 0);

    gl3.glActiveTexture(GL_TEXTURE0);
    gl3.glBindTexture(GL_TEXTURE_2D, textureName.get(0));

    gl3.glBindVertexArray(vertexArrayName.get(0));
    gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 1);

    return true;
}
 

@Override
protected boolean render(GL gl) {

    GL3 gl3 = (GL3) gl;

    Mat4 projection = glm.perspective_((float) Math.PI * 0.25f, 4.0f / 3.0f, 0.1f, 100.0f);
    Mat4 model = new Mat4(1.0f);
    Mat4 mvp = projection.mul(viewMat4()).mul(model);

    // Set the display viewport
    gl3.glViewport(0, 0, windowSize.x, windowSize.y);

    // Clear color buffer with black
    gl3.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
    gl3.glClear(GL_COLOR_BUFFER_BIT);

    // First draw, capture the attributes
    {
        // Disable rasterisation, vertices processing only!
        gl3.glEnable(GL_RASTERIZER_DISCARD);

        gl3.glUseProgram(programName[Program.TRANSFORM]);
        gl3.glUniformMatrix4fv(uniformMvp, 1, false, mvp.toFa_(), 0);

        gl3.glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER, feedbackOutput.POSITION, bufferName.get(Buffer.POSITION));
        gl3.glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER, feedbackOutput.COLOR, bufferName.get(Buffer.COLOR));

        gl3.glBindVertexArray(vertexArrayName.get(Program.TRANSFORM));

        gl3.glBeginQuery(GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN, queryName.get(0));
        gl3.glBeginTransformFeedback(GL_TRIANGLES);
        {
            gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 1);
        }
        gl3.glEndTransformFeedback();
        gl3.glEndQuery(GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN);

        gl3.glDisable(GL_RASTERIZER_DISCARD);
    }

    // Second draw, reuse the captured attributes
    {
        gl3.glUseProgram(programName[Program.FEEDBACK]);

        IntBuffer primitivesWritten = GLBuffers.newDirectIntBuffer(1);
        gl3.glGetQueryObjectuiv(queryName.get(0), GL_QUERY_RESULT, primitivesWritten);

        gl3.glBindVertexArray(vertexArrayName.get(Program.FEEDBACK));
        gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, primitivesWritten.get(0) * 3, 1);

        BufferUtils.destroyDirectBuffer(primitivesWritten);
    }

    return true;
}
 

@Override
protected boolean render(GL gl) {

    GL3 gl3 = (GL3) gl;

    // Pass 1
    {
        gl3.glBindFramebuffer(GL_FRAMEBUFFER, framebufferName.get(0));
        gl3.glViewport(0, 0, windowSize.x >> 1, windowSize.y >> 1);
        gl3.glClearBufferfv(GL_COLOR, 0, clearColor.put(0, 1).put(1, 1).put(2, 1).put(3, 1));
        gl3.glClearBufferfv(GL_COLOR, 1, clearColor);
        gl3.glClearBufferfv(GL_COLOR, 2, clearColor);
        gl3.glClearBufferfv(GL_COLOR, 3, clearColor);
    }

    // Pass 2
    gl3.glBindFramebuffer(GL_FRAMEBUFFER, 0);
    gl3.glClearBufferfv(GL_COLOR, 0, clearColor.put(0, 0).put(1, 0).put(2, 0).put(3, 0));

    gl3.glUseProgram(programNameSingle);

    {
        Mat4 projection = glm.ortho_(-2.0f, 2.0f, -1.5f, 1.5f, -1.0f, 1.0f);
        Mat4 view = new Mat4(1.0f);
        Mat4 model = new Mat4(0.2f);
        Mat4 mvp = projection.mul(view).mul(model);

        gl3.glUniformMatrix4fv(uniformMvpSingle, 1, false, mvp.toFa_(), 0);
        gl3.glUniform1i(uniformDiffuseSingle, 0);
    }

    for (int i = 0; i < Texture.MAX; ++i) {

        gl3.glViewport(viewport[i].x, viewport[i].y, viewport[i].z, viewport[i].w);

        gl3.glActiveTexture(GL_TEXTURE0);
        gl3.glBindTexture(GL_TEXTURE_2D, texture2dName.get(i));
        gl3.glBindSampler(0, samplerName.get(0));
        gl3.glBindVertexArray(vertexArrayName.get(0));

        gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 1);
    }

    return true;
}
 

/**
 * Draws the new line on the display.
 * <p>
 * @param drawable The OpenGL rendering target.
 * @param pMatrix The model view projection matrix.
 */
@Override
public void display(final GLAutoDrawable drawable, final Matrix44f pMatrix) {

    final Matrix44f mvpMatrix = parent.getDisplayModelViewProjectionMatrix();

    // If no endpoints are set, don't draw anything
    if (model != null && !model.isClear()) {
        final Vector3f startPosition = model.getStartLocation();
        final Vector3f endPosition = model.getEndLocation();

        final GL3 gl = drawable.getGL().getGL3();

        gl.glBindBuffer(GL3.GL_ARRAY_BUFFER, batch.getBufferName(vertexTarget));
        ByteBuffer bbuf = gl.glMapBuffer(GL3.GL_ARRAY_BUFFER, GL3.GL_WRITE_ONLY);
        FloatBuffer fbuf = bbuf.asFloatBuffer();

        // Update the line endpoints in the vertex buffer.
        float[] vertices = new float[]{
            startPosition.getX(), startPosition.getY(), startPosition.getZ(),
            endPosition.getX(), endPosition.getY(), endPosition.getZ()};
        fbuf.put(vertices);

        gl.glUnmapBuffer(GL3.GL_ARRAY_BUFFER);

        // Disable depth so the line is drawn over everything else.
        gl.glDisable(GL3.GL_DEPTH_TEST);
        gl.glDepthMask(false);

        // Draw the line.
        gl.glLineWidth(NEW_LINE_WIDTH);
        gl.glUseProgram(shader);
        gl.glUniformMatrix4fv(shaderMVP, 1, false, mvpMatrix.a, 0);
        batch.draw(gl);

        gl.glLineWidth(1);

        // Reenable depth.
        gl.glEnable(GL3.GL_DEPTH_TEST);
        gl.glDepthMask(true);

        // Rebind default array buffer
        gl.glBindBuffer(GL3.GL_ARRAY_BUFFER, 0);
    }
}
 

private void resolveMultisampling(GL3 gl3) {

        Mat4 perspective = glm.ortho_(-1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 100.0f);
        Mat4 viewFlip = new Mat4(1.0f).scale(new Vec3(1.0f, -1.0f, 1.0f));
        Mat4 view = viewFlip.translate(new Vec3(0.0f, 0.0f, -cameraDistance() * 1.0f));
        Mat4 model = new Mat4(1.0f);
        Mat4 mvp = perspective.mul(view).mul(model);

        gl3.glViewport(0, 0, windowSize.x, windowSize.y);
        gl3.glBindFramebuffer(GL_FRAMEBUFFER, 0);

        gl3.glActiveTexture(GL_TEXTURE0);
        gl3.glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, textureName.get(Texture.MULTISAMPLE_COLORBUFFER));

        gl3.glBindVertexArray(vertexArrayName.get(0));

        gl3.glEnable(GL_SCISSOR_TEST);

        // Box
        {
            gl3.glScissor(1, 1, windowSize.x / 2 - 2, windowSize.y - 2);

            gl3.glUseProgram(programName[Program.RESOLVE_BOX]);
            gl3.glUniform1i(uniformDiffuse[Program.RESOLVE_BOX], 0);
            gl3.glUniformMatrix4fv(uniformMvp[Program.RESOLVE_BOX], 1, false, mvp.toFa_(), 0);

            gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 5);
        }

        // Near
        {
            gl3.glScissor(windowSize.x / 2 + 1, 1, windowSize.x / 2 - 2, windowSize.y - 2);

            gl3.glUseProgram(programName[Program.RESOLVE_NEAR]);
            gl3.glUniform1i(uniformDiffuse[Program.RESOLVE_NEAR], 0);
            gl3.glUniformMatrix4fv(uniformMvp[Program.RESOLVE_NEAR], 1, false, mvp.toFa_(), 0);

            gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 5);
        }

        gl3.glDisable(GL_SCISSOR_TEST);
    }
 

@Override
protected boolean render(GL gl) {

    GL3 gl3 = (GL3) gl;

    Mat4 projection = glm.perspective_((float) Math.PI * 0.25f, 4.0f / 3.0f, 0.1f, 1000.0f);
    Mat4 model = new Mat4(1.0f);
    Mat4 mvp = projection.mul(viewMat4()).mul(model);

    gl3.glViewport(0, 0, windowSize.x, windowSize.y);
    gl3.glScissor(0, 0, windowSize.x, windowSize.y);
    gl3.glClearBufferfv(GL_COLOR, 0, clearColor.put(0, 1).put(1, .5f).put(2, 0).put(3, 1));

    // Bind the program for use
    gl3.glUseProgram(programName);
    gl3.glUniformMatrix4fv(uniformMvp, 1, false, mvp.toFa_(), 0);

    gl3.glBindSampler(Viewport.V00, samplerName.get(Viewport.V00));
    gl3.glBindSampler(Viewport.V10, samplerName.get(Viewport.V10));
    gl3.glBindSampler(Viewport.V11, samplerName.get(Viewport.V11));
    gl3.glBindSampler(Viewport.V01, samplerName.get(Viewport.V01));

    gl3.glActiveTexture(GL_TEXTURE0);
    gl3.glBindTexture(GL_TEXTURE_2D, texture2dName.get(0));
    gl3.glActiveTexture(GL_TEXTURE1);
    gl3.glBindTexture(GL_TEXTURE_2D, texture2dName.get(0));
    gl3.glActiveTexture(GL_TEXTURE2);
    gl3.glBindTexture(GL_TEXTURE_2D, texture2dName.get(0));
    gl3.glActiveTexture(GL_TEXTURE3);
    gl3.glBindTexture(GL_TEXTURE_2D, texture2dName.get(0));

    gl3.glBindVertexArray(vertexArrayName.get(0));

    for (int index = 0; index < Viewport.MAX; ++index) {
        gl3.glUniform1i(uniformDiffuse, index);
        gl3.glScissor(viewport[index].x, viewport[index].y, viewport[index].z, viewport[index].w);
        gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 1);
    }

    return true;
}