Example usage for org.lwjgl.opengl GL31 glDrawElementsInstanced

Introduction

In this page you can find the example usage for org.lwjgl.opengl GL31 glDrawElementsInstanced.

Prototype

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

Source Link

Document

Draws multiple instances of a set of elements.

Usage

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 {//from  w  w  w .j  av a 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.badlogic.gdx.backends.jglfw.JglfwGL30.java

License:Apache License

@Override
public void glDrawElementsInstanced(int mode, int count, int type, int indicesOffset, int instanceCount) {
    GL31.glDrawElementsInstanced(mode, count, type, indicesOffset, instanceCount);

}

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

License:Open Source License

/**
 * Performs instanced rendering on the given vertex data, using the given
 * primitive mode. The instance ID may be read as by a vertex shader as
 * {@code gl_InstanceID}./*from w w  w .  j a  v a2 s .  co  m*/
 * 
 * @param <T> A type of vertex data.
 * @param data The vertex data to render.
 * @param mode An OpenGL primitive draw mode.
 * @param primcount The number of instances to render.
 * @return The given vertex data.
 */
public static <T extends VertexData> T drawInstanced(T data, int mode, int primcount) {
    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)
            GL31.glDrawArraysInstanced(mode, 0, verts, primcount);
        else
            GL31.glDrawElementsInstanced(mode, inds, GL11.GL_UNSIGNED_INT, 0, primcount);
    });

    return data;
}

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From source file:com.xrbpowered.gl.res.StaticMesh.java

License:Open Source License

public void drawCallInstanced(int count) {
    if (vboiId != GL11.GL_INVALID_VALUE) {
        GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, vboiId);
        GL31.glDrawElementsInstanced(drawMode, countElements, GL11.GL_UNSIGNED_SHORT, 0, count);
    } else {/*from  w w w.j  ava2  s  .  com*/
        GL31.glDrawArraysInstanced(drawMode, 0, countElements, count);
    }
}

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From source file:io.root.gfx.glutils.GL.java

License:Apache License

public static void glDrawElementsInstanced(int mode, int count, int type, int indicesOffset,
        int instanceCount) {
    GL31.glDrawElementsInstanced(mode, count, type, indicesOffset, instanceCount);

}

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From source file:tk.ivybits.engine.gl.GL.java

License:Open Source License

public static void glDrawElementsInstanced(int a, int b, int c, long d, int e) {
    GL31.glDrawElementsInstanced(a, b, c, d, e);
}

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