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("void const *") IntBuffer 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 drawElements(final IndexBufferData<?> indices, final int[] indexLengths,
        final IndexMode[] indexModes, final int primcount) {
    if (indices == null || indices.getBuffer() == null) {
        logger.severe("Missing indices for drawElements call without VBO");
        return;/*from   w  ww.j av a2s .c o  m*/
    }

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

        indices.position(0);
        if (indices.getBuffer() instanceof IntBuffer) {
            if (primcount < 0) {
                GL11.glDrawElements(glIndexMode, (IntBuffer) indices.getBuffer());
            } else {
                GL31.glDrawElementsInstanced(glIndexMode, (IntBuffer) indices.getBuffer(), primcount);
            }
        } else if (indices.getBuffer() instanceof ShortBuffer) {
            if (primcount < 0) {
                GL11.glDrawElements(glIndexMode, (ShortBuffer) indices.getBuffer());
            } else {
                GL31.glDrawElementsInstanced(glIndexMode, (ShortBuffer) indices.getBuffer(), primcount);
            }

        } else if (indices.getBuffer() instanceof ByteBuffer) {
            if (primcount < 0) {
                GL11.glDrawElements(glIndexMode, (ByteBuffer) indices.getBuffer());
            } else {
                GL31.glDrawElementsInstanced(glIndexMode, (ByteBuffer) indices.getBuffer(), 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]);

            indices.getBuffer().position(offset);
            indices.getBuffer().limit(offset + count);
            if (indices.getBuffer() instanceof IntBuffer) {
                if (primcount < 0) {
                    GL11.glDrawElements(glIndexMode, (IntBuffer) indices.getBuffer());
                } else {
                    GL31.glDrawElementsInstanced(glIndexMode, (IntBuffer) indices.getBuffer(), primcount);
                }

            } else if (indices.getBuffer() instanceof ShortBuffer) {
                if (primcount < 0) {
                    GL11.glDrawElements(glIndexMode, (ShortBuffer) indices.getBuffer());
                } else {
                    GL31.glDrawElementsInstanced(glIndexMode, (ShortBuffer) indices.getBuffer(), primcount);
                }

            } else if (indices.getBuffer() instanceof ByteBuffer) {
                if (primcount < 0) {
                    GL11.glDrawElements(glIndexMode, (ByteBuffer) indices.getBuffer());
                } else {
                    GL31.glDrawElementsInstanced(glIndexMode, (ByteBuffer) indices.getBuffer(), primcount);
                }
            }

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

            offset += count;

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

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

License:Open Source License

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

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

License:Open Source License

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

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

License:Open Source License

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

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