Example usage for org.lwjgl.opengl GL11 glDrawElements

List of usage examples for org.lwjgl.opengl GL11 glDrawElements

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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("void const *") IntBuffer indices)

Source Link

Document

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

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;/*  ww  w.java2 s . 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++;
            }
        }
    }
}

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

License:Apache License

public void glDrawElements(int mode, int count, int type, Buffer indices) {
    if (indices instanceof ShortBuffer && type == com.badlogic.gdx.graphics.GL20.GL_UNSIGNED_SHORT)
        GL11.glDrawElements(mode, (ShortBuffer) indices);
    else if (indices instanceof ByteBuffer && type == com.badlogic.gdx.graphics.GL20.GL_UNSIGNED_SHORT)
        GL11.glDrawElements(mode, ((ByteBuffer) indices).asShortBuffer()); // FIXME yay...
    else if (indices instanceof ByteBuffer && type == com.badlogic.gdx.graphics.GL20.GL_UNSIGNED_BYTE)
        GL11.glDrawElements(mode, (ByteBuffer) indices);
    else if (indices instanceof IntBuffer && type == com.badlogic.gdx.graphics.GL20.GL_INT)
        GL11.glDrawElements(mode, (IntBuffer) indices);
    else/* w ww  . j  a v  a2s .  co m*/
        throw new GdxRuntimeException("Can't use " + indices.getClass().getName()
                + " with this method. Use IntBuffer, ShortBuffer or ByteBuffer instead. Blame LWJGL");
}

From source file:com.badlogic.gdx.backends.lwjgl.LwjglGL10.java

License:Apache License

public final void glDrawElements(int mode, int count, int type, Buffer indices) {
    if (indices instanceof ShortBuffer && type == GL10.GL_UNSIGNED_SHORT)
        GL11.glDrawElements(mode, (ShortBuffer) indices);
    else if (indices instanceof ByteBuffer && type == GL10.GL_UNSIGNED_SHORT)
        GL11.glDrawElements(mode, ((ByteBuffer) indices).asShortBuffer()); // FIXME yay...
    else if (indices instanceof ByteBuffer && type == GL10.GL_UNSIGNED_BYTE)
        GL11.glDrawElements(mode, (ByteBuffer) indices);
    else// www  . j  av  a  2s .  co  m
        throw new GdxRuntimeException("Can't use " + indices.getClass().getName()
                + " with this method. Use ShortBuffer or ByteBuffer instead. Blame LWJGL");
}

From source file:com.badlogic.gdx.backends.lwjgl.LwjglGL20.java

License:Apache License

public void glDrawElements(int mode, int count, int type, Buffer indices) {
    if (indices instanceof ShortBuffer && type == com.badlogic.gdx.graphics.GL20.GL_UNSIGNED_SHORT)
        GL11.glDrawElements(mode, (ShortBuffer) indices);
    else if (indices instanceof ByteBuffer && type == com.badlogic.gdx.graphics.GL20.GL_UNSIGNED_SHORT)
        GL11.glDrawElements(mode, ((ByteBuffer) indices).asShortBuffer()); // FIXME yay...
    else if (indices instanceof ByteBuffer && type == com.badlogic.gdx.graphics.GL20.GL_UNSIGNED_BYTE)
        GL11.glDrawElements(mode, (ByteBuffer) indices);
    else//from   w  w  w  .ja  v  a  2  s.  c o m
        throw new GdxRuntimeException("Can't use " + indices.getClass().getName()
                + " with this method. Use ShortBuffer or ByteBuffer instead. Blame LWJGL");
}

From source file:com.badlogic.gdx.backends.lwjgl.swt.LwjglGL20.java

License:Apache License

public void glDrawElements(int mode, int count, int type, Buffer indices) {
    if (indices instanceof ShortBuffer && type == GL10.GL_UNSIGNED_SHORT)
        GL11.glDrawElements(mode, (ShortBuffer) indices);
    else if (indices instanceof ByteBuffer && type == GL10.GL_UNSIGNED_SHORT)
        GL11.glDrawElements(mode, ((ByteBuffer) indices).asShortBuffer()); // FIXME yay...
    else if (indices instanceof ByteBuffer && type == GL10.GL_UNSIGNED_BYTE)
        GL11.glDrawElements(mode, (ByteBuffer) indices);
    else//from   ww  w  .  ja  va2  s  .c  o m
        throw new GdxRuntimeException("Can't use " + indices.getClass().getName()
                + " with this method. Use ShortBuffer or ByteBuffer instead. Blame LWJGL");
}

From source file:com.badlogic.gdx.backends.lwjgl3.Lwjgl3GL20.java

License:Apache License

public void glDrawElements(int mode, int count, int type, Buffer indices) {
    if (indices instanceof ShortBuffer && type == com.badlogic.gdx.graphics.GL20.GL_UNSIGNED_SHORT)
        GL11.glDrawElements(mode, (ShortBuffer) indices);
    else if (indices instanceof ByteBuffer && type == com.badlogic.gdx.graphics.GL20.GL_UNSIGNED_SHORT)
        GL11.glDrawElements(mode, ((ByteBuffer) indices).asShortBuffer());
    else if (indices instanceof ByteBuffer && type == com.badlogic.gdx.graphics.GL20.GL_UNSIGNED_BYTE)
        GL11.glDrawElements(mode, (ByteBuffer) indices);
    else/*from  w  w w. j av  a 2s. c  o m*/
        throw new GdxRuntimeException("Can't use " + indices.getClass().getName()
                + " with this method. Use ShortBuffer or ByteBuffer instead. Blame LWJGL");
}

From source file:com.gundogstudios.modules.DesktopGL11.java

License:Open Source License

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

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

License:Apache License

public static void glDrawElements(int mode, int count, int type, Buffer indices) {
    if (indices instanceof ShortBuffer && type == GL_UNSIGNED_SHORT)
        GL11.glDrawElements(mode, (ShortBuffer) indices);
    else if (indices instanceof ByteBuffer && type == GL_UNSIGNED_SHORT)
        GL11.glDrawElements(mode, ((ByteBuffer) indices).asShortBuffer());
    else if (indices instanceof ByteBuffer && type == GL_UNSIGNED_BYTE)
        GL11.glDrawElements(mode, (ByteBuffer) indices);
    else// ww w.  j  a  v  a 2s . c om
        throw new RootException("Can't use " + indices.getClass().getName()
                + " with this method. Use ShortBuffer or ByteBuffer instead.");
}

From source file:ion2d.INGrid3D.java

License:Open Source License

/**
 * Draw the Grid3D to the output/*from  www.  j  a v  a2 s .com*/
 */
public void blit() {
    // Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
    // Needed states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_TEXTURE_COORD_ARRAY
    // Unneeded states: GL_COLOR_ARRAY
    GL11.glDisableClientState(GL11.GL_COLOR_ARRAY);

    GL11.glVertexPointer(3, 0, this.vertices);
    GL11.glTexCoordPointer(2, 0, this.textureCoordinates);
    GL11.glDrawElements(GL11.GL_TRIANGLES, this.indices);

    //Restore GL Default State
    GL11.glEnableClientState(GL11.GL_COLOR_ARRAY);
}

From source file:ion2d.INTiledGrid3D.java

License:Open Source License

/**
 * Draws the Grid3D to the output/*from   ww w .  ja v a 2s  . c  o m*/
 */
public void blit() {
    // Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
    // Needed states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_TEXTURE_COORD_ARRAY
    // Unneeded states: GL_COLOR_ARRAY
    GL11.glDisableClientState(GL11.GL_COLOR_ARRAY);

    GL11.glVertexPointer(3, 0, this.vertices);
    GL11.glTexCoordPointer(2, 0, this.textureCoordinates);
    GL11.glDrawElements(GL11.GL_QUADS, this.indices);

    //Restore GL Default State
    GL11.glEnableClientState(GL11.GL_COLOR_ARRAY);
}