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("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:jake2.desktop.LWJGLAdapter.java

License:Open Source License

@Override
public void glDrawElements(int mode, ShortBuffer indices) {
    GL11.glDrawElements(mode, indices);
}

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From source file:jpcsp.graphics.RE.RenderingEngineLwjgl.java

License:Open Source License

@Override
public void drawElements(int primitive, int count, int indexType, Buffer indices, int indicesOffset) {
    switch (indexType) {
    case IRenderingEngine.RE_UNSIGNED_BYTE:
        GL11.glDrawElements(primitiveToGL[primitive],
                DirectBufferUtilities.getDirectByteBuffer(count, indices, indicesOffset));
        break;/*w w  w . j  av a2s.co m*/
    case IRenderingEngine.RE_UNSIGNED_SHORT:
        GL11.glDrawElements(primitiveToGL[primitive],
                DirectBufferUtilities.getDirectShortBuffer(count << 1, indices, indicesOffset));
        break;
    case IRenderingEngine.RE_UNSIGNED_INT:
        GL11.glDrawElements(primitiveToGL[primitive],
                DirectBufferUtilities.getDirectIntBuffer(count << 2, indices, indicesOffset));
        break;
    default:
        log.error(String.format("drawElements unknown indexType=%d", indexType));
        break;
    }
}

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From source file:kuake2.render.lwjgl.Mesh.java

License:Open Source License

/**
 * GL_DrawAliasFrameLerp/*  w w w  .  j a va  2  s .  c  o m*/
 * <p/>
 * interpolates between two frames and origins
 * FIXME: batch lerp all vertexes
 */
void GL_DrawAliasFrameLerp(qfiles.dmdl_t paliashdr, float backlerp) {
    qfiles.daliasframe_t frame = paliashdr.aliasFrames[currententity.frame];

    int[] verts = frame.verts;

    qfiles.daliasframe_t oldframe = paliashdr.aliasFrames[currententity.oldframe];

    int[] ov = oldframe.verts;

    float alpha;
    if ((currententity.flags & Defines.RF_TRANSLUCENT) != 0)
        alpha = currententity.alpha;
    else
        alpha = 1.0f;

    // PMM - added double shell
    if ((currententity.flags & (Defines.RF_SHELL_RED | Defines.RF_SHELL_GREEN | Defines.RF_SHELL_BLUE
            | Defines.RF_SHELL_DOUBLE | Defines.RF_SHELL_HALF_DAM)) != 0)
        GL11.glDisable(GL11.GL_TEXTURE_2D);

    float frontlerp = 1.0f - backlerp;

    // move should be the delta back to the previous frame * backlerp
    Math3D.VectorSubtract(currententity.oldorigin, currententity.origin, frontv);
    Math3D.AngleVectors(currententity.angles, vectors[0], vectors[1], vectors[2]);

    move[0] = Math3D.DotProduct(frontv, vectors[0]); // forward
    move[1] = -Math3D.DotProduct(frontv, vectors[1]); // left
    move[2] = Math3D.DotProduct(frontv, vectors[2]); // up

    Math3D.VectorAdd(move, oldframe.translate, move);

    for (int i = 0; i < 3; i++) {
        move[i] = backlerp * move[i] + frontlerp * frame.translate[i];
        frontv[i] = frontlerp * frame.scale[i];
        backv[i] = backlerp * oldframe.scale[i];
    }

    // ab hier wird optimiert

    GL_LerpVerts(paliashdr.num_xyz, ov, verts, move, frontv, backv);

    //GL11.glEnableClientState( GL11.GL_VERTEX_ARRAY );
    GL11.glVertexPointer(3, 0, vertexArrayBuf);

    // PMM - added double damage shell
    if ((currententity.flags & (Defines.RF_SHELL_RED | Defines.RF_SHELL_GREEN | Defines.RF_SHELL_BLUE
            | Defines.RF_SHELL_DOUBLE | Defines.RF_SHELL_HALF_DAM)) != 0) {
        GL11.glColor4f(shadelight[0], shadelight[1], shadelight[2], alpha);
    } else {
        GL11.glEnableClientState(GL11.GL_COLOR_ARRAY);
        GL11.glColorPointer(4, 0, colorArrayBuf);

        //
        // pre light everything
        //
        FloatBuffer color = colorArrayBuf;
        float l;
        int size = paliashdr.num_xyz;
        int j = 0;
        for (int i = 0; i < size; i++) {
            l = shadedots[(verts[i] >>> 24) & 0xFF];
            color.put(j, l * shadelight[0]);
            color.put(j + 1, l * shadelight[1]);
            color.put(j + 2, l * shadelight[2]);
            color.put(j + 3, alpha);
            j += 4;
        }
    }

    ARBMultitexture.glClientActiveTextureARB(GL_TEXTURE0);
    GL11.glTexCoordPointer(2, 0, textureArrayBuf);
    //GL11.glEnableClientState( GL11.GL_TEXTURE_COORD_ARRAY);

    int pos = 0;
    int[] counts = paliashdr.counts;

    IntBuffer srcIndexBuf = null;

    FloatBuffer dstTextureCoords = textureArrayBuf;
    FloatBuffer srcTextureCoords = paliashdr.textureCoordBuf;

    int dstIndex = 0;
    int srcIndex = 0;
    int count;
    int mode;
    int size = counts.length;
    for (int j = 0; j < size; j++) {

        // get the vertex count and primitive type
        count = counts[j];
        if (count == 0)
            break; // done

        srcIndexBuf = paliashdr.indexElements[j];

        mode = GL11.GL_TRIANGLE_STRIP;
        if (count < 0) {
            mode = GL11.GL_TRIANGLE_FAN;
            count = -count;
        }
        srcIndex = pos << 1;
        srcIndex--;
        for (int k = 0; k < count; k++) {
            dstIndex = srcIndexBuf.get(k) << 1;
            dstTextureCoords.put(dstIndex, srcTextureCoords.get(++srcIndex));
            dstTextureCoords.put(++dstIndex, srcTextureCoords.get(++srcIndex));
        }

        GL11.glDrawElements(mode, srcIndexBuf);
        pos += count;
    }

    // PMM - added double damage shell
    if ((currententity.flags & (Defines.RF_SHELL_RED | Defines.RF_SHELL_GREEN | Defines.RF_SHELL_BLUE
            | Defines.RF_SHELL_DOUBLE | Defines.RF_SHELL_HALF_DAM)) != 0)
        GL11.glEnable(GL11.GL_TEXTURE_2D);

    GL11.glDisableClientState(GL11.GL_COLOR_ARRAY);
}

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From source file:loon.core.graphics.opengl.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());
    } else if (indices instanceof ByteBuffer && type == GL10.GL_UNSIGNED_BYTE) {
        GL11.glDrawElements(mode, (ByteBuffer) indices);
    } else {//w  w  w . j a  va 2s.c  o  m
        throw new RuntimeException("Can't use " + indices.getClass().getName()
                + " with this method. Use ShortBuffer or ByteBuffer instead. Blame LWJGL");
    }
}

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From source file:org.free.jake2.render.lwjgl.Mesh.java

License:Open Source License

/**
 * GL_DrawAliasFrameLerp//w  w  w. j  a v  a 2 s .  c  om
 *
 * interpolates between two frames and origins FIXME: batch lerp all vertexes
 */
void GL_DrawAliasFrameLerp(qfiles.dmdl_t paliashdr, float backlerp) {
    qfiles.daliasframe_t frame = paliashdr.aliasFrames[currententity.frame];

    int[] verts1 = frame.verts;

    qfiles.daliasframe_t oldframe = paliashdr.aliasFrames[currententity.oldframe];

    int[] ov = oldframe.verts;

    float alpha;
    if ((currententity.flags & Defines.RF_TRANSLUCENT) != 0) {
        alpha = currententity.alpha;
    } else {
        alpha = 1.0f;
    }

    // PMM - added double shell
    if ((currententity.flags & (Defines.RF_SHELL_RED | Defines.RF_SHELL_GREEN | Defines.RF_SHELL_BLUE
            | Defines.RF_SHELL_DOUBLE | Defines.RF_SHELL_HALF_DAM)) != 0) {
        GL11.glDisable(GL11.GL_TEXTURE_2D);
    }

    float frontlerp = 1.0f - backlerp;

    // move should be the delta back to the previous frame * backlerp
    Math3D.VectorSubtract(currententity.oldorigin, currententity.origin, frontv);
    Math3D.AngleVectors(currententity.angles, vectors[0], vectors[1], vectors[2]);

    move[0] = Math3D.DotProduct(frontv, vectors[0]); // forward
    move[1] = -Math3D.DotProduct(frontv, vectors[1]); // left
    move[2] = Math3D.DotProduct(frontv, vectors[2]); // up

    Math3D.VectorAdd(move, oldframe.translate, move);

    for (int i = 0; i < 3; i++) {
        move[i] = backlerp * move[i] + frontlerp * frame.translate[i];
        frontv[i] = frontlerp * frame.scale[i];
        backv[i] = backlerp * oldframe.scale[i];
    }

    // ab hier wird optimiert
    GL_LerpVerts(paliashdr.num_xyz, ov, verts1, move, frontv, backv);

    //GL11.glEnableClientState( GL11.GL_VERTEX_ARRAY );
    GL11.glVertexPointer(3, 0, vertexArrayBuf);

    // PMM - added double damage shell
    if ((currententity.flags & (Defines.RF_SHELL_RED | Defines.RF_SHELL_GREEN | Defines.RF_SHELL_BLUE
            | Defines.RF_SHELL_DOUBLE | Defines.RF_SHELL_HALF_DAM)) != 0) {
        GL11.glColor4f(shadelight[0], shadelight[1], shadelight[2], alpha);
    } else {
        GL11.glEnableClientState(GL11.GL_COLOR_ARRAY);
        GL11.glColorPointer(4, 0, colorArrayBuf);

        //
        // pre light everything
        //
        FloatBuffer color = colorArrayBuf;
        float l;
        int size = paliashdr.num_xyz;
        int j = 0;
        for (int i = 0; i < size; i++) {
            l = shadedots[(verts1[i] >>> 24) & 0xFF];
            color.put(j, l * shadelight[0]);
            color.put(j + 1, l * shadelight[1]);
            color.put(j + 2, l * shadelight[2]);
            color.put(j + 3, alpha);
            j += 4;
        }
    }

    GL13.glClientActiveTexture(GL_TEXTURE0);
    GL11.glTexCoordPointer(2, 0, textureArrayBuf);
    //GL11.glEnableClientState( GL11.GL_TEXTURE_COORD_ARRAY);

    int pos = 0;
    int[] counts = paliashdr.counts;

    IntBuffer srcIndexBuf = null;

    FloatBuffer dstTextureCoords = textureArrayBuf;
    FloatBuffer srcTextureCoords = paliashdr.textureCoordBuf;

    int dstIndex = 0;
    int srcIndex = 0;
    int count;
    int mode;
    int size = counts.length;
    for (int j = 0; j < size; j++) {

        // get the vertex count and primitive type
        count = counts[j];
        if (count == 0) {
            break; // done
        }
        srcIndexBuf = paliashdr.indexElements[j];

        mode = GL11.GL_TRIANGLE_STRIP;
        if (count < 0) {
            mode = GL11.GL_TRIANGLE_FAN;
            count = -count;
        }
        srcIndex = pos << 1;
        srcIndex--;
        for (int k = 0; k < count; k++) {
            dstIndex = srcIndexBuf.get(k) << 1;
            dstTextureCoords.put(dstIndex, srcTextureCoords.get(++srcIndex));
            dstTextureCoords.put(++dstIndex, srcTextureCoords.get(++srcIndex));
        }

        GL11.glDrawElements(mode, srcIndexBuf);
        pos += count;
    }

    // PMM - added double damage shell
    if ((currententity.flags & (Defines.RF_SHELL_RED | Defines.RF_SHELL_GREEN | Defines.RF_SHELL_BLUE
            | Defines.RF_SHELL_DOUBLE | Defines.RF_SHELL_HALF_DAM)) != 0) {
        GL11.glEnable(GL11.GL_TEXTURE_2D);
    }

    GL11.glDisableClientState(GL11.GL_COLOR_ARRAY);
}

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From source file:org.oscim.gdx.GdxGL20.java

License:Apache License

public 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()); // FIXME yay...
    else if (indices instanceof ByteBuffer && type == GL_UNSIGNED_BYTE)
        GL11.glDrawElements(mode, (ByteBuffer) indices);
    else//  w  ww.j a v a2s . c o m
        throw new GdxRuntimeException("Can't use " + indices.getClass().getName()
                + " with this method. Use ShortBuffer or ByteBuffer instead. Blame LWJGL");
}

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From source file:org.oscim.gdx.LwjglGL20.java

License:Apache License

public void drawElements(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.  j a  v a 2  s. co  m*/
        throw new GdxRuntimeException("Can't use " + indices.getClass().getName()
                + " with this method. Use ShortBuffer or ByteBuffer instead. Blame LWJGL");
}

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From source file:playn.java.JavaGL20.java

License:Apache License

@Override
public 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()); // FIXME
    // yay.../*  w w w .j  a v a  2s  . c  o  m*/
    else if (indices instanceof ByteBuffer && type == GL_UNSIGNED_BYTE)
        GL11.glDrawElements(mode, (ByteBuffer) indices);
    else
        throw new RuntimeException("Can't use " + indices.getClass().getName()
                + " with this method. Use ShortBuffer or ByteBuffer instead. Blame LWJGL");
}

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From source file:processing.lwjgl.PLWJGL.java

License:Open Source License

public void drawElements(int mode, int count, int type, Buffer indices) {
    if (type == UNSIGNED_INT) {
        GL11.glDrawElements(mode, (IntBuffer) indices);
    } else if (type == UNSIGNED_BYTE) {
        GL11.glDrawElements(mode, (ByteBuffer) indices);
    } else if (type == UNSIGNED_SHORT) {
        GL11.glDrawElements(mode, (ShortBuffer) indices);
    }//from  w ww.ja va 2  s.  c  o m
}

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From source file:processing.opengl.PLWJGL.java

License:Open Source License

@Override
public void drawElements(int mode, int count, int type, Buffer indices) {
    if (type == UNSIGNED_INT) {
        GL11.glDrawElements(mode, (IntBuffer) indices);
    } else if (type == UNSIGNED_BYTE) {
        GL11.glDrawElements(mode, (ByteBuffer) indices);
    } else if (type == UNSIGNED_SHORT) {
        GL11.glDrawElements(mode, (ShortBuffer) indices);
    }//w w  w .  j  a v a  2 s.c o  m
}

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