Example usage for org.lwjgl.opengl GL13 glActiveTexture

Introduction

In this page you can find the example usage for org.lwjgl.opengl GL13 glActiveTexture.

Prototype

public static void glActiveTexture(@NativeType("GLenum") int texture) 

Source Link

Document

Selects which texture unit subsequent texture state calls will affect.

Usage

From source file:com.grillecube.engine.renderer.world.particles.ParticleRenderer.java

/** render every quad particles */
private void renderBillboardedParticles(World world, CameraProjectiveWorld camera) {
    if (this._billboarded_particles.size() == 0) {
        return;// ww  w  . j  a  v  a  2s. c  o  m
    }
    GL13.glActiveTexture(GL13.GL_TEXTURE0 + 0); // Texture unit 0

    GL11.glEnable(GL11.GL_DEPTH_TEST);
    GL11.glEnable(GL11.GL_BLEND);
    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);

    this._program_billboarded_particle.useStart();
    this.getParent().getDefaultVAO().bind();

    this._program_billboarded_particle.loadGlobalUniforms(camera);
    this._billboarded_particles.sort(this._particle_comparator);

    int i = 0;
    while (i < this._billboarded_particles.size()) {

        ParticleBillboarded particle = this._billboarded_particles.get(i);
        float radius = Maths.max(particle.getScale().x, particle.getScale().y);
        if (particle != null && particle.getCameraSquareDistance() < camera.getSquaredRenderDistance()
                && camera.isSphereInFrustum(particle.getPosition(), radius)) {
            this._program_billboarded_particle.loadInstanceUniforms(particle);
            this.getParent().getDefaultVAO().draw(GL11.GL_POINTS, 0, 1);
        }
        ++i;
    }
}

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From source file:com.mtbs3d.minecrift.VRRenderer.java

License:LGPL

private void doDistortionAndSuperSample() {
    int FBWidth = this.mc.displayFBWidth;
    int FBHeight = this.mc.displayFBHeight;

    if (this.mc.vrSettings.useDistortion || this.mc.vrSettings.useSupersample || this.mc.vrSettings.useFXAA) {
        // Setup ortho projection
        GL11.glMatrixMode(GL11.GL_PROJECTION);
        GL11.glLoadIdentity();//w ww.  j av  a2s  .  com
        GL11.glMatrixMode(GL11.GL_MODELVIEW);
        GL11.glLoadIdentity();

        GL11.glTranslatef(0.0f, 0.0f, -0.7f);
    }

    if (this.mc.vrSettings.useSupersample) {
        FBWidth = (int) ceil(this.mc.displayFBWidth * this.mc.vrSettings.superSampleScaleFactor);
        FBHeight = (int) ceil(this.mc.displayFBHeight * this.mc.vrSettings.superSampleScaleFactor);
    }

    if (mc.vrSettings.useDistortion) {
        //mc.checkGLError("Before distortion");

        preDistortionFBO.bindTexture();

        if (this.mc.vrSettings.useFXAA) {
            //chain into the FXAA FBO
            fxaaFBO.bindRenderTarget();
        } else if (this.mc.vrSettings.useSupersample) {
            //chain into the superSample FBO
            postDistortionFBO.bindRenderTarget();
        } else {
            unbindFBORenderTarget();
        }

        GL11.glClearColor(1.0f, 1.0f, 1.0f, 0.5f);
        GL11.glClearDepth(1.0D);
        GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer on the framebuffer to black

        // Render onto the entire screen framebuffer
        GL11.glViewport(0, 0, FBWidth, FBHeight);

        // Set the distortion shader as in use
        ARBShaderObjects.glUseProgramObjectARB(_Distortion_shaderProgramId);

        // Set up the fragment shader uniforms
        ARBShaderObjects.glUniform1iARB(_DistortionShader_RenderTextureUniform, 0);

        if (this.mc.vrSettings.useDistortionTextureLookupOptimisation) {
            distortParams.bindTexture_Unit1();
            ARBShaderObjects.glUniform1iARB(_DistortionShader_DistortionMapUniform, 1);
        }

        ARBShaderObjects.glUniform1iARB(_DistortionShader_half_screenWidthUniform,
                distortParams.half_screenWidth);
        ARBShaderObjects.glUniform2fARB(_DistortionShader_LeftLensCenterUniform, distortParams.leftLensCenterX,
                distortParams.leftLensCenterY);
        ARBShaderObjects.glUniform2fARB(_DistortionShader_RightLensCenterUniform,
                distortParams.rightLensCenterX, distortParams.rightLensCenterY);
        ARBShaderObjects.glUniform2fARB(_DistortionShader_LeftScreenCenterUniform,
                distortParams.leftScreenCenterX, distortParams.leftScreenCenterY);
        ARBShaderObjects.glUniform2fARB(_DistortionShader_RightScreenCenterUniform,
                distortParams.rightScreenCenterX, distortParams.rightScreenCenterY);
        ARBShaderObjects.glUniform2fARB(_DistortionShader_ScaleUniform, distortParams.scaleX,
                distortParams.scaleY);
        ARBShaderObjects.glUniform2fARB(_DistortionShader_ScaleInUniform, distortParams.scaleInX,
                distortParams.scaleInY);
        ARBShaderObjects.glUniform4fARB(_DistortionShader_HmdWarpParamUniform, distortParams.DistortionK[0],
                distortParams.DistortionK[1], distortParams.DistortionK[2], distortParams.DistortionK[3]);
        ARBShaderObjects.glUniform4fARB(_DistortionShader_ChromAbParamUniform, distortParams.ChromaticAb[0],
                distortParams.ChromaticAb[1], distortParams.ChromaticAb[2], distortParams.ChromaticAb[3]);

        drawQuad();

        // Stop shader use
        ARBShaderObjects.glUseProgramObjectARB(0);

        OpenGlHelper.setActiveTexture(OpenGlHelper.defaultTexUnit);
        //mc.checkGLError("After distortion");
    }

    if (this.mc.vrSettings.useFXAA) {
        fxaaFBO.bindTexture();

        if (this.mc.vrSettings.useSupersample) {
            //chain into the superSample FBO
            postDistortionFBO.bindRenderTarget();
        } else {
            unbindFBORenderTarget();
        }

        GL11.glClearColor(1.0f, 1.0f, 1.0f, 0.5f);
        GL11.glClearDepth(1.0D);
        GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer on the framebuffer to black

        // Render onto the entire screen framebuffer
        GL11.glViewport(0, 0, FBWidth, FBHeight);

        // Set the distortion shader as in use
        ARBShaderObjects.glUseProgramObjectARB(_FXAA_shaderProgramId);

        // Set up the fragment shader uniforms
        ARBShaderObjects.glUniform1iARB(_FXAA_RenderTextureUniform, 0);
        ARBShaderObjects.glUniform2fARB(_FXAA_RenderedTextureSizeUniform, (float) FBWidth, (float) FBHeight);

        drawQuad();

        // Stop shader use
        ARBShaderObjects.glUseProgramObjectARB(0);

        OpenGlHelper.setActiveTexture(OpenGlHelper.defaultTexUnit);
        //ShaderHelper.checkGLError("After fxaa");
    }

    if (this.mc.vrSettings.useSupersample) {
        // Now switch to 1st pass target framebuffer
        postSuperSampleFBO.bindRenderTarget();

        // Bind the FBO
        postDistortionFBO.bindTexture();

        GL11.glClearColor(0.0f, 0.0f, 1.0f, 0.5f);
        GL11.glClearDepth(1.0D);
        GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer on the framebuffer to black

        // Render onto the entire screen framebuffer
        GL11.glViewport(0, 0, this.mc.displayFBWidth, FBHeight);

        // Set the downsampling shader as in use
        ARBShaderObjects.glUseProgramObjectARB(_Lanczos_shaderProgramId);

        // Set up the fragment shader uniforms
        ARBShaderObjects.glUniform1fARB(_LanczosShader_texelWidthOffsetUniform,
                1.0f / (3.0f * (float) this.mc.displayFBWidth));
        ARBShaderObjects.glUniform1fARB(_LanczosShader_texelHeightOffsetUniform, 0.0f);
        ARBShaderObjects.glUniform1iARB(_LanczosShader_inputImageTextureUniform, 0);

        GL11.glClear(GL11.GL_COLOR_BUFFER_BIT);

        // Pass 1
        drawQuad();

        // mc.checkGLError("After Lanczos Pass1");

        // Pass 2
        // Now switch to 2nd pass screen framebuffer
        unbindFBORenderTarget();
        postSuperSampleFBO.bindTexture();

        GL11.glViewport(0, 0, this.mc.displayFBWidth, this.mc.displayFBHeight);
        GL11.glClearColor(0.0f, 0.0f, 1.0f, 0.5f);
        GL11.glClearDepth(1.0D);
        GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);

        // Bind the texture
        GL13.glActiveTexture(GL13.GL_TEXTURE0);

        // Set up the fragment shader uniforms for pass 2
        ARBShaderObjects.glUniform1fARB(_LanczosShader_texelWidthOffsetUniform, 0.0f);
        ARBShaderObjects.glUniform1fARB(_LanczosShader_texelHeightOffsetUniform,
                1.0f / (3.0f * (float) this.mc.displayFBHeight));
        ARBShaderObjects.glUniform1iARB(_LanczosShader_inputImageTextureUniform, 0);

        drawQuad();

        // Stop shader use
        ARBShaderObjects.glUseProgramObjectARB(0);
        // mc.checkGLError("After Lanczos Pass2");
    }
}

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From source file:com.opengrave.og.light.Depth2DFramebuffer.java

License:Open Source License

@Override
public void bindDraw() {
    Util.checkErr();/*www. j  a  va2 s.c  o m*/

    for (int i = GL13.GL_TEXTURE0; i < GL13.GL_TEXTURE31; i++) {
        GL13.glActiveTexture(i);
        GL11.glBindTexture(GL11.GL_TEXTURE_2D, 0);
        GL11.glBindTexture(GL30.GL_TEXTURE_2D_ARRAY, 0);
        GL11.glBindTexture(GL13.GL_TEXTURE_CUBE_MAP, 0);
    }
    Util.checkErr();
    GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, framebuffer);
    Util.checkErr();
    GL11.glDisable(GL11.GL_BLEND);
    Util.checkErr();
    GL11.glEnable(GL11.GL_DEPTH_TEST);
    GL11.glDepthFunc(GL11.GL_LESS);
    GL11.glDepthMask(true);
    Util.checkErr();
    GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
    Util.checkErr();
    GL11.glViewport(0, 0, framebufferSize, framebufferSize);

}

---

From source file:com.opengrave.og.light.Texture2DShadowMap.java

License:Open Source License

@Override
public void bind(int t) {
    lastTexNum = t;
    GL13.glActiveTexture(t);
    GL11.glBindTexture(getTextureType(), texture);
}

---

From source file:com.opengrave.og.light.Texture2DShadowMap.java

License:Open Source License

@Override
public void unbind() {
    GL13.glActiveTexture(lastTexNum);
    GL11.glBindTexture(getTextureType(), 0);
}

---

From source file:com.opengrave.og.light.TextureCubeShadowMap.java

License:Open Source License

@Override
public void bind(int t) {
    if (t == 0 || texture == 0) {
        lastTexNum = 0;/*from w  w w.  ja va 2  s.  c om*/
        return;
    }
    lastTexNum = t;
    GL13.glActiveTexture(t);
    Util.checkErr();
    GL11.glBindTexture(getTextureType(), texture);
    Util.checkErr();
}

---

From source file:com.opengrave.og.light.TextureCubeShadowMap.java

License:Open Source License

@Override
public void unbind() {
    if (lastTexNum == 0) {
        return;//from   ww  w . jav a  2s .  com
    }
    Util.checkErr();
    GL13.glActiveTexture(lastTexNum);
    Util.checkErr();
    GL11.glBindTexture(getTextureType(), 0);
    Util.checkErr();
}

---

From source file:com.opengrave.og.resources.TextureAtlas.java

License:Open Source License

@Override
public void bind(int t) {
    // GLSL Will assume the order if we don't Uniform it. I like that.
    // GL20.glUniform1i(i, 0);
    lastTexNum = t;/*from   w w w .  j  a  va 2  s  . c  o  m*/
    GL13.glActiveTexture(t);
    GL11.glBindTexture(GL30.GL_TEXTURE_2D_ARRAY, id);
    Util.checkErr();
}

---

From source file:com.opengrave.og.resources.TextureAtlas.java

License:Open Source License

@Override
public void unbind() {
    Util.checkErr();/*  w ww .  j  a  v  a  2s.  c o  m*/
    GL13.glActiveTexture(lastTexNum);
    Util.checkErr();
    GL11.glBindTexture(GL30.GL_TEXTURE_2D_ARRAY, 0);
    Util.checkErr();
}

---

From source file:com.opengrave.og.resources.TextureAtlasEditable.java

License:Open Source License

@Override
public void bind(int t) {

    GL13.glActiveTexture(t);
    if (pixels != null) {
        id = GL11.glGenTextures();/*from   w ww . ja  v a 2 s  . c  o  m*/
        mainBuf = BufferUtils.createByteBuffer(4 * this.size * this.size);
        // for (int i = this.size - 1; i >= 0; i--) {
        for (int i = 0; i < this.size; i++) {
            for (int j = 0; j < this.size; j++) {
                float r = 1f, g = 1f, b = 1f, a = 0f;
                if (i < py && j < px) {
                    int pixel = pixels[i * px + j];
                    r = (float) ((pixel >> 16) & 0xFF) / 255f;
                    g = (float) ((pixel >> 8) & 0xFF) / 255f;
                    b = (float) (pixel & 0xFF) / 255f;
                    a = (float) ((pixel >> 24) & 0xFF) / 255f;
                }
                addColour(r, g, b, a);
            }
        }
        mainBuf.flip();
        GL11.glBindTexture(GL30.GL_TEXTURE_2D_ARRAY, id);
        GL12.glTexImage3D(GL30.GL_TEXTURE_2D_ARRAY, 0, GL11.GL_RGBA, this.size, this.size, 1, 0, GL11.GL_RGBA,
                GL11.GL_UNSIGNED_BYTE, mainBuf);
        GL11.glTexParameteri(GL30.GL_TEXTURE_2D_ARRAY, GL11.GL_TEXTURE_WRAP_S, GL11.GL_REPEAT);
        GL11.glTexParameteri(GL30.GL_TEXTURE_2D_ARRAY, GL11.GL_TEXTURE_WRAP_T, GL11.GL_REPEAT);
        GL11.glTexParameteri(GL30.GL_TEXTURE_2D_ARRAY, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);
        GL11.glTexParameteri(GL30.GL_TEXTURE_2D_ARRAY, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR);
        GL11.glBindTexture(GL30.GL_TEXTURE_2D_ARRAY, 0);
        pixels = null;
    }
    synchronized (changeList) {
        if (changeList.size() < 10) {
            GL11.glBindTexture(GL30.GL_TEXTURE_2D_ARRAY, id);

            for (TextureEditableDeferedChanges change : changeList) {
                applyChangeToMainBuffer(change);
                ByteBuffer buf = BufferUtils.createByteBuffer(4);
                buf.put((byte) (255 * change.getColour().z)).put((byte) (255 * change.getColour().y))
                        .put((byte) (255 * change.getColour().x)).put((byte) (255 * change.getColour().w));
                buf.flip();
                GL11.glTexSubImage2D(GL30.GL_TEXTURE_2D_ARRAY, 0, change.getX(), change.getY(), 1, 1,
                        GL12.GL_BGRA, GL11.GL_UNSIGNED_BYTE, buf);
            }
            GL11.glBindTexture(GL30.GL_TEXTURE_2D_ARRAY, 0);
        } else {
            // Replace the whole image. There's bound to be better ways
            // around this...
            for (TextureEditableDeferedChanges change : changeList) {
                applyChangeToMainBuffer(change);
            }
            mainBuf.position(0);
            GL11.glBindTexture(GL30.GL_TEXTURE_2D_ARRAY, id);
            Util.checkErr();
            GL12.glTexSubImage3D(GL30.GL_TEXTURE_2D_ARRAY, 0, 0, 0, 0, size, size, 0, GL12.GL_BGRA,
                    GL11.GL_UNSIGNED_BYTE, mainBuf);
            Util.checkErr();
            GL11.glBindTexture(GL30.GL_TEXTURE_2D_ARRAY, 0);
            Util.checkErr();

        }
        changeList.clear();
    }
    Util.checkErr();
    GL11.glBindTexture(GL30.GL_TEXTURE_2D_ARRAY, id);
    lastTexNum = t;
}

---

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