Example usage for org.lwjgl.opengl GL11 glDrawArrays

Introduction

In this page you can find the example usage for org.lwjgl.opengl GL11 glDrawArrays.

Prototype

public static void glDrawArrays(@NativeType("GLenum") int mode, @NativeType("GLint") int first,
        @NativeType("GLsizei") int count) 

Source Link

Document

Constructs a sequence of geometric primitives by successively transferring elements for count vertices.

Usage

From source file:com.opengrave.og.base.RenderableParticles.java

License:Open Source License

@Override
public void render(Matrix4f matrix, RenderStyle style) {
    dealWithChange();//from  w  w  w  .  ja  v  a  2  s  .  c  om
    if (matList == null || !matList.valid()) {
        return;
    }
    GL30.glBindVertexArray(idVao);
    int pID = Resources.loadShader("particle.vs", "particle.fs").getProgram();
    GL20.glUseProgram(pID);
    GL20.glEnableVertexAttribArray(0);
    GL20.glEnableVertexAttribArray(1);
    GL20.glEnableVertexAttribArray(2);
    GL20.glBindAttribLocation(pID, 0, "in_Position");
    GL20.glBindAttribLocation(pID, 1, "in_Colour");
    GL20.glBindAttribLocation(pID, 2, "in_Scale");
    Util.checkErr();
    int texture = GL20.glGetUniformLocation(pID, "tex");
    GL20.glUniform1i(texture, 0);
    int wSS = GL20.glGetUniformLocation(pID, "windowSizeScale");

    GL20.glUniform1f(wSS, getContext().width / 1024f);
    getContext().setMatrices(pID, matrix);
    if (matList != null && matList.valid()) {
        matList.bind(pID, GL13.GL_TEXTURE0);
    }
    GL11.glEnable(GL20.GL_POINT_SPRITE);
    GL11.glEnable(GL20.GL_VERTEX_PROGRAM_POINT_SIZE);
    GL11.glDepthMask(false);
    GL11.glDrawArrays(GL11.GL_POINTS, 0, size);
    GL11.glDepthMask(true);
    GL11.glDisable(GL20.GL_POINT_SPRITE);
    GL11.glDisable(GL20.GL_VERTEX_PROGRAM_POINT_SIZE);

    if (matList != null && matList.valid()) {
        matList.unbind();
    }
    Util.checkErr();

    GL20.glDisableVertexAttribArray(0);
    GL20.glDisableVertexAttribArray(1);
    GL20.glDisableVertexAttribArray(2);

    Util.checkErr();

    GL20.glUseProgram(0);
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
    GL30.glBindVertexArray(0);
    Util.checkErr();
}

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From source file:com.opengrave.og.base.RenderableParticles.java

License:Open Source License

@Override
public void renderForPicking(Matrix4f matrix, Pickable object) {
    dealWithChange();/*  w  w w. j  ava 2s . c o m*/
    GL30.glBindVertexArray(idVao);
    int pID = Resources.loadShader("particle.vs", "pickingmodel.fs").getProgram();
    GL20.glUseProgram(pID);
    GL20.glEnableVertexAttribArray(0);
    GL20.glEnableVertexAttribArray(2);
    GL20.glBindAttribLocation(pID, 0, "in_Position");
    GL20.glBindAttribLocation(pID, 2, "in_Scale");
    Util.checkErr();

    int wSS = GL20.glGetUniformLocation(pID, "windowSizeScale");

    GL20.glUniform1f(wSS, MainThread.lastW / 1024f);
    getContext().setMatrices(pID, matrix);
    GL11.glEnable(GL20.GL_POINT_SPRITE);
    GL11.glEnable(GL20.GL_VERTEX_PROGRAM_POINT_SIZE);
    Picking.registerObject(pID, getContext(), object);
    GL11.glDrawArrays(GL11.GL_POINTS, 0, size);
    GL11.glDisable(GL20.GL_POINT_SPRITE);
    GL11.glDisable(GL20.GL_VERTEX_PROGRAM_POINT_SIZE);

    Util.checkErr();

    GL20.glDisableVertexAttribArray(0);
    GL20.glDisableVertexAttribArray(2);

    Util.checkErr();

    GL20.glUseProgram(0);
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
    GL30.glBindVertexArray(0);
    Util.checkErr();
}

---

From source file:com.opengrave.og.base.RenderablePoints.java

License:Open Source License

@Override
public void render(Matrix4f matrix, RenderStyle style) {
    Util.checkErr();//from   w  w  w  .  jav a2 s.  c  o  m

    dealWithChange();
    if (!visible) {
        return;
    }
    if (vertCount == 0) {
        return;
    }
    Util.checkErr();
    GL11.glDisable(GL11.GL_DEPTH_TEST);
    Util.checkErr();
    GL11.glPointSize(3f);
    Util.checkErr();
    int pID = Resources.loadShader("particle.vs", "particle.fs").getProgram();
    Util.checkErr();
    GL20.glUseProgram(pID);
    Util.checkErr();
    if (pID == 0) {
        return;
    }
    Util.checkErr();
    GL30.glBindVertexArray(vaoID);
    Util.checkErr();
    GL20.glEnableVertexAttribArray(0);
    GL20.glEnableVertexAttribArray(1);
    GL20.glEnableVertexAttribArray(2);

    Util.checkErr();
    int wSS = GL20.glGetUniformLocation(pID, "windowSizeScale");

    GL20.glUniform1f(wSS, MainThread.lastW / 1024f);

    getContext().setMatrices(pID, matrix);
    Util.checkErr();

    if (tex != null) {
        tex.bind(GL13.GL_TEXTURE0);
    }
    GL11.glEnable(GL20.GL_POINT_SPRITE);
    GL11.glEnable(GL20.GL_VERTEX_PROGRAM_POINT_SIZE);
    GL11.glDrawArrays(GL11.GL_POINTS, 0, vertCount);

    GL11.glDisable(GL20.GL_POINT_SPRITE);
    GL11.glDisable(GL20.GL_VERTEX_PROGRAM_POINT_SIZE);
    if (tex != null) {
        tex.unbind();
    }
    Util.checkErr();

    GL20.glDisableVertexAttribArray(0);
    GL20.glDisableVertexAttribArray(1);
    GL20.glDisableVertexAttribArray(2);
    Util.checkErr();

    GL30.glBindVertexArray(0);
    GL20.glUseProgram(0);
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
    GL30.glBindVertexArray(0);
    Util.checkErr();
    GL11.glEnable(GL11.GL_DEPTH_TEST);
}

---

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

License:Open Source License

public void dumpTestingImage() {
    // TESTING/*w  w  w.  j a  v  a 2  s . c  o m*/
    GL11.glDisable(GL11.GL_DEPTH_TEST);
    int pID = Resources.loadShader("test.vs", "test.fs").getProgram();
    GL20.glUseProgram(pID);
    int shadow = GL20.glGetUniformLocation(pID, "shadowMap");
    GL20.glUniform1i(shadow, 0);
    GL30.glBindVertexArray(vao_ID);
    GL20.glEnableVertexAttribArray(0);
    GL20.glEnableVertexAttribArray(1);
    shadowMap.bind(GL13.GL_TEXTURE0);
    GL11.glDrawArrays(GL11.GL_TRIANGLES, 0, count * 3);
    shadowMap.unbind();
    GL20.glDisableVertexAttribArray(0);
    GL20.glDisableVertexAttribArray(1);

    GL20.glUseProgram(0);
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
    GL30.glBindVertexArray(0);
    GL11.glEnable(GL11.GL_DEPTH_TEST);
    // END TESTING
}

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From source file:com.redthirddivision.quad.rendering.renderers.GuiRenderer.java

License:Apache License

@Override
public void render(ArrayList<GuiTexture> elements) {
    shader.start();//  w  ww . j  a v  a  2 s.c o m

    GL30.glBindVertexArray(quad.getVaoID());
    GL20.glEnableVertexAttribArray(0);
    GL11.glEnable(GL11.GL_BLEND);
    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
    GL11.glDisable(GL11.GL_DEPTH_TEST);
    for (GuiTexture gui : elements) {
        GL13.glActiveTexture(GL13.GL_TEXTURE0);
        GL11.glBindTexture(GL11.GL_TEXTURE_2D, gui.getTexture());
        Matrix4f matrix = MathHelper.createTransformationMatrix(gui.getPosition(), gui.getScale(),
                new Vector2f(0, 0));
        shader.loadTransformation(matrix);
        GL11.glDrawArrays(GL11.GL_TRIANGLE_STRIP, 0, quad.getVertexCount());
    }

    GL11.glDisable(GL11.GL_BLEND);
    GL11.glEnable(GL11.GL_DEPTH_TEST);
    GL20.glDisableVertexAttribArray(0);
    GL30.glBindVertexArray(0);

    shader.stop();
}

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From source file:com.runescape.client.revised.client.lwjgl.Mesh.java

License:Open Source License

public void draw() {
    GL20.glEnableVertexAttribArray(0);//from w w w  .java 2  s.co  m
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, this.getVbo());
    GL20.glVertexAttribPointer(0, 3, GL11.GL_FLOAT, false, Vertex.getSize() * 4, 0);
    GL11.glDrawArrays(GL11.GL_TRIANGLES, 0, this.getSize());
    GL20.glDisableVertexAttribArray(0);
}

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From source file:com.samrj.devil.gl.DGL.java

License:Open Source License

/**
 * Draws the given vertex data using the given primitive mode. A shader must
 * be bound./*from   w w w.j a va 2s  . c  o m*/
 * 
 * @param <T> A type of vertex data.
 * @param data The vertex data to render.
 * @param mode An OpenGL primitive draw mode.
 * @return The given vertex data.
 */
public static <T extends VertexData> T draw(T data, int mode) {
    if (boundProgram == null)
        throw new IllegalStateException("No shader program is in use.");

    int verts = data.numVertices();
    int inds = data.numIndices();

    VAO.bindFor(data, boundProgram, () -> {
        if (inds < 0)
            GL11.glDrawArrays(mode, 0, verts);
        else
            GL11.glDrawElements(mode, inds, GL11.GL_UNSIGNED_INT, 0);
    });

    return data;
}

---

From source file:com.timvisee.voxeltex.module.mesh.Mesh.java

License:Open Source License

/**
 * Render or draw the mesh using OpenGL.
 *///from ww  w . j  a v  a2  s  .  co m
public void draw(Material material) {
    // Bind the vertex buffer
    glBindBuffer(GL_ARRAY_BUFFER, vboVertexHandle);
    GL11.glVertexPointer(this.raw.getVertexAxisCount(), GL11.GL_FLOAT, 0, 0L);

    // Bind the normal coordinate buffer if available
    if (hasNormalData()) {
        glBindBuffer(GL_ARRAY_BUFFER, vboNormalHandle);
        GL11.glNormalPointer(GL11.GL_FLOAT, 0, 0L);
    }

    // Bind the texture coordinate buffer if available
    if (hasTextureData()) {
        glBindBuffer(GL_ARRAY_BUFFER, vboTextureHandle);
        GL11.glTexCoordPointer(this.raw.getTextureAxisCount(), GL11.GL_FLOAT, 0, 0L);
    }

    // Enable the client states for the buffers that were bound
    GL11.glEnableClientState(GL11.GL_VERTEX_ARRAY);
    if (hasNormalData())
        GL11.glEnableClientState(GL11.GL_NORMAL_ARRAY);
    if (hasTextureData())
        GL11.glEnableClientState(GL11.GL_TEXTURE_COORD_ARRAY);

    // Draw the mesh
    GL11.glDrawArrays(GL11.GL_TRIANGLES, 0, this.vertexCount);

    // Disable the client used states
    GL11.glDisableClientState(GL11.GL_VERTEX_ARRAY);
    if (hasNormalData())
        GL11.glDisableClientState(GL11.GL_NORMAL_ARRAY);
    if (hasTextureData())
        GL11.glDisableClientState(GL11.GL_TEXTURE_COORD_ARRAY);

    // Unbind all buffers
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
}

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From source file:com.xrbpowered.gl.res.shaders.FeedbackVertices.java

License:Open Source License

public void transform() {
    GL30.glBindVertexArray(vaoId);/* ww  w  .ja  v  a 2 s  . c o m*/
    GL11.glEnable(GL30.GL_RASTERIZER_DISCARD);
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, vboId);

    transformShader.use();
    transformShader.info.initAttribPointers();
    transformShader.info.enableAttribs();

    GL30.glBindBufferBase(GL30.GL_TRANSFORM_FEEDBACK_BUFFER, 0, vboFeedbackId);
    GL30.glBeginTransformFeedback(GL11.GL_POINTS);
    GL11.glDrawArrays(GL11.GL_POINTS, 0, countElements);
    GL30.glEndTransformFeedback();

    transformShader.info.disableAttribs();
    transformShader.unuse();
    GL11.glDisable(GL30.GL_RASTERIZER_DISCARD);
}

---

From source file:com.xrbpowered.gl.res.shaders.FeedbackVertices.java

License:Open Source License

public void draw() {
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, vboFeedbackId);
    renderShader.use();/*from   w ww  .j  ava2s.  co m*/
    renderShader.info.enableAttribs();
    renderShader.info.initAttribPointers();

    if (vboiId != GL11.GL_INVALID_VALUE) {
        GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, vboiId);
        GL11.glDrawElements(GL11.GL_POINTS, countElements, GL11.GL_UNSIGNED_INT, 0);
    } else {
        GL11.glDrawArrays(GL11.GL_POINTS, 0, countElements);
    }

    renderShader.info.disableAttribs();
    renderShader.unuse();
    GL30.glBindVertexArray(0);
}

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