Example usage for org.lwjgl.opengl GL11 glDrawElements

Introduction

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

Prototype

public static void glDrawElements(@NativeType("GLenum") int mode, @NativeType("GLsizei") int count,
        @NativeType("GLenum") int type, @NativeType("void const *") long indices) 

Source Link

Document

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

Usage

From source file:ar.com.quark.backend.lwjgl.opengl.DesktopGLES20.java

License:Apache License

/**
 * {@inheritDoc}//  w w w  .  ja  v a 2 s .  com
 */
@Override
public void glDrawElements(int primitive, int count, int format, int offset) {
    GL11.glDrawElements(primitive, count, format, offset);
}

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From source file:br.com.perin.renderEngine.Renderer.java

public void render(RawModel model) {
    GL30.glBindVertexArray(model.getVaoId());
    GL20.glEnableVertexAttribArray(0);//from   w  w  w.ja v  a  2  s .c  o  m
    GL11.glDrawElements(GL11.GL_TRIANGLES, model.getVertexCount(), GL11.GL_UNSIGNED_INT, 0);
    GL20.glDisableVertexAttribArray(0);
    GL30.glBindVertexArray(0);
}

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From source file:br.com.perin.renderEngine.Renderer.java

public void render(TexturedModel model) {
    RawModel raw = model.getRawModel();/*  ww w .j av a 2s .  c  o m*/
    GL30.glBindVertexArray(raw.getVaoId());
    GL20.glEnableVertexAttribArray(0);
    GL20.glEnableVertexAttribArray(1);
    GL13.glActiveTexture(GL13.GL_TEXTURE0);
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, model.getTexture().getId());
    // Essa linha est com problemas.
    GL11.glDrawElements(GL11.GL_TRIANGLES, raw.getVertexCount(), GL11.GL_UNSIGNED_INT, 0);
    GL20.glDisableVertexAttribArray(0);
    GL20.glDisableVertexAttribArray(1);
    GL30.glBindVertexArray(0);
}

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From source file:com.a2client.corex.Mesh.java

License:Open Source License

public void Render() {
    Material mat = material.ModeMat.get(Render.Mode);
    if (mat == null)
        return;/*www .j a v  a2s  . com*/
    mat.bind();

    // collect skin joints
    if (data.Attrib.contains(Const.MATERIAL_ATTRIB.maJoint) && skeleton != null) {
        for (int i = 0; i < JIndex.length; i++) {
            if (JIndex[i] > -1) {
                skeleton.updateJoint(JIndex[i]);

                if (skeleton.joint[JIndex[i]] == null) {
                    Log.debug("fail1");
                    return;
                } else
                    JQuat[i] = skeleton.joint[JIndex[i]].mul(skeleton.data.base[JIndex[i]].bind);
            }
        }
        mat.uniform[Const.muJoint_idx].setValue(JQuat);
    }

    // set vertex attributes
    data.VertexBuf.bind();
    int offset = 0;
    for (Const.MATERIAL_ATTRIB ma : data.Attrib) {
        ShaderAttrib sa = mat.Attrib.get(ma);
        // enable attrib
        sa.enable();
        // set attrib value : data.VertexBuf.stride, data.VertexBuf.data, offset
        sa.setValue(data.VertexBuf.Stride, 0, offset);

        offset += Const.getAttribSize(ma);
    }

    if (data.IndexBuf != null) {
        data.IndexBuf.bind();

        //            if (test_shader.use_draw_elements)
        GL11.glDrawElements(Const.getMeshMode(data.Mode), data.IndexBuf.Count, data.IndexBuf.IndexType, 0);
        //            else
        //                GL12.glDrawRangeElements(Const.getMeshMode(data.Mode), 0, data.IndexBuf.Count, (data.IndexBuf.Count), data.IndexBuf.IndexType, 0);

    }

    //  ?    ( )
    for (Const.MATERIAL_ATTRIB ma : data.Attrib) {
        mat.Attrib.get(ma).disable();
    }

}

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From source file:com.adavr.player.context.QuadContext.java

License:Open Source License

@Override
public void loop() {
    VertexArray.bind(vao);/*from  w  w  w  . jav  a  2s . c o m*/
    {
        vao.enableAttributes();
        VertexBuffer.bind(indicesVBO);
        {
            GL11.glDrawElements(GL11.GL_TRIANGLES, indicesCount, GL11.GL_UNSIGNED_BYTE, 0);
        }
        VertexBuffer.unbind(indicesVBO);
        vao.disableAttributes();
    }
    VertexArray.unbind();
}

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From source file:com.ardor3d.renderer.lwjgl.LwjglRenderer.java

License:Open Source License

@Override
public void drawElementsVBO(final IndexBufferData<?> indices, final int[] indexLengths,
        final IndexMode[] indexModes, final int primcount) {
    final RenderContext context = ContextManager.getCurrentContext();
    final RendererRecord rendRecord = context.getRendererRecord();

    final int vboID = setupIndicesVBO(indices, context, rendRecord);

    LwjglRendererUtil.setBoundElementVBO(rendRecord, vboID);

    if (indexLengths == null) {
        final int glIndexMode = getGLIndexMode(indexModes[0]);

        final int type = getGLDataType(indices);
        if (primcount < 0) {
            GL11.glDrawElements(glIndexMode, indices.getBufferLimit(), type, 0);
        } else {/*  ww w . j  ava 2  s  .c  o m*/
            GL31.glDrawElementsInstanced(glIndexMode, indices.getBufferLimit(), type, 0, primcount);
        }
        if (Constants.stats) {
            addStats(indexModes[0], indices.getBufferLimit());
        }
    } else {
        int offset = 0;
        int indexModeCounter = 0;
        for (int i = 0; i < indexLengths.length; i++) {
            final int count = indexLengths[i];

            final int glIndexMode = getGLIndexMode(indexModes[indexModeCounter]);

            final int type = getGLDataType(indices);
            final int byteSize = indices.getByteCount();
            // offset in this call is done in bytes.
            if (primcount < 0) {
                GL11.glDrawElements(glIndexMode, count, type, offset * byteSize);
            } else {
                GL31.glDrawElementsInstanced(glIndexMode, count, type, offset * byteSize, primcount);
            }

            if (Constants.stats) {
                addStats(indexModes[indexModeCounter], count);
            }

            offset += count;

            if (indexModeCounter < indexModes.length - 1) {
                indexModeCounter++;
            }
        }
    }
}

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From source file:com.auroraengine.opengl.model.IndexBuffer.java

License:Open Source License

public void draw() {
    GL11.glDrawElements(GL11.GL_TRIANGLES, ib.remaining(), GL11.GL_UNSIGNED_INT, ib.position());
}

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From source file:com.badlogic.gdx.backends.jglfw.JglfwGL20.java

License:Apache License

public void glDrawElements(int mode, int count, int type, int indices) {
    GL11.glDrawElements(mode, count, type, indices);
}

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From source file:com.dinasgames.engine.graphics.GL.java

public static void render(Vertex[] verts) {

    init();//  www .j  ava2s  . co  m

    int numberIndices = verts.length / 3;
    vertexBuffer = BufferUtils.createFloatBuffer(verts.length * 2);
    colorBuffer = BufferUtils.createFloatBuffer(verts.length);
    indexBuffer = BufferUtils.createFloatBuffer(verts.length);

    vertexBuffer.clear();
    colorBuffer.clear();
    indexBuffer.clear();

    for (Vertex vert : verts) {

        vertexBuffer.put(vert.x);
        vertexBuffer.put(vert.y);

        GLColor c = vert.color.toGLColor();

        colorBuffer.put(c.getRed());
        colorBuffer.put(c.getGreen());
        colorBuffer.put(c.getBlue());
        colorBuffer.put(c.getAlpha());

    }

    vertexBufferData(vertexBufferID, vertexBuffer);
    colorBufferData(colorBufferID, colorBuffer);

    // Push verticies to OpenGL
    GL11.glEnableClientState(GL11.GL_VERTEX_ARRAY);
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, vertexBufferID);
    GL11.glVertexPointer(2, GL11.GL_FLOAT, 0, 0);

    // Push color values to OpenGL
    GL11.glEnableClientState(GL11.GL_COLOR_ARRAY);
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, colorBufferID);
    GL11.glColorPointer(4, GL11.GL_FLOAT, 0, 0);

    // Draw the shape
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, indexBufferID);
    GL11.glDrawElements(GL11.GL_TRIANGLES, numberIndices, GL11.GL_UNSIGNED_INT, 0);

    // Disalble client state for vertex and color
    GL11.glDisableClientState(GL11.GL_VERTEX_ARRAY);
    GL11.glDisableClientState(GL11.GL_COLOR_ARRAY);

}

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From source file:com.flowpowered.caustic.lwjgl.gl20.GL20VertexArray.java

License:MIT License

@Override
public void draw() {
    checkCreated();//from  w ww.  j ava  2s  . c o  m
    if (extension.has()) {
        // Bind the vao
        extension.glBindVertexArray(id);
    } else {
        // Enable the vertex attributes
        for (int i = 0; i < attributeBufferIDs.length; i++) {
            // Bind the buffer
            GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, attributeBufferIDs[i]);
            // Define the attribute
            GL20.glVertexAttribPointer(i, attributeSizes[i], attributeTypes[i], attributeNormalizing[i], 0, 0);
            // Enable it
            GL20.glEnableVertexAttribArray(i);
        }
        // Unbind the last buffer
        GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
    }
    // Bind the index buffer
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, indicesBufferID);
    // Set the polygon mode
    GL11.glPolygonMode(GL11.GL_FRONT_AND_BACK, polygonMode.getGLConstant());
    // Draw all indices with the provided mode
    GL11.glDrawElements(drawingMode.getGLConstant(), indicesDrawCount, GL11.GL_UNSIGNED_INT,
            indicesOffset * DataType.INT.getByteSize());
    // Unbind the indices buffer
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);
    // Check for errors
    LWJGLUtil.checkForGLError();
}

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