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Diffstat (limited to 'src/jake2/render/fast/Polygon.java')
| -rw-r--r-- | src/jake2/render/fast/Polygon.java | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/src/jake2/render/fast/Polygon.java b/src/jake2/render/fast/Polygon.java new file mode 100644 index 0000000..13019fc --- /dev/null +++ b/src/jake2/render/fast/Polygon.java @@ -0,0 +1,164 @@ +/* + * Polygon.java + * Copyright (C) 2003 + * + * $Id: Polygon.java,v 1.2 2006-11-21 00:50:46 cawe Exp $ + */ +/* + Copyright (C) 1997-2001 Id Software, Inc. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 2 + of the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + + See the GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + */ +package jake2.render.fast; + +import jake2.render.glpoly_t; +import jake2.util.Lib; + +import java.nio.FloatBuffer; + +/** + * Polygon + * + * @author cwei + */ +public final class Polygon extends glpoly_t { + + private final static int MAX_POLYS = 20000; + + private final static int MAX_BUFFER_VERTICES = 120000; + + // backup for s1 scrolling + private static float[] s1_old = new float[MAX_VERTICES]; + + private static FloatBuffer buffer = Lib.newFloatBuffer(MAX_BUFFER_VERTICES + * STRIDE); + + private static int bufferIndex = 0; + + private static int polyCount = 0; + + private static Polygon[] polyCache = new Polygon[MAX_POLYS]; + static { + for (int i = 0; i < polyCache.length; i++) { + polyCache[i] = new Polygon(); + } + } + + static glpoly_t create(int numverts) { + Polygon poly = polyCache[polyCount++]; + poly.clear(); + poly.numverts = numverts; + poly.pos = bufferIndex; + bufferIndex += numverts; + return poly; + } + + static void reset() { + polyCount = 0; + bufferIndex = 0; + } + + static FloatBuffer getInterleavedBuffer() { + return (FloatBuffer) buffer.rewind(); + } + + private Polygon() { + } + + private final void clear() { + next = null; + chain = null; + numverts = 0; + flags = 0; + } + + // the interleaved buffer has the format: + // textureCoord0 (index 0, 1) + // vertex (index 2, 3, 4) + // textureCoord1 (index 5, 6) + + public final float s1(int index) { + return buffer.get((index + pos) * STRIDE); + } + + public final void s1(int index, float value) { + buffer.put((index + pos) * STRIDE, value); + } + + public final float t1(int index) { + return buffer.get((index + pos) * STRIDE + 1); + } + + public final void t1(int index, float value) { + buffer.put((index + pos) * STRIDE + 1, value); + } + + public final float x(int index) { + return buffer.get((index + pos) * STRIDE + 2); + } + + public final void x(int index, float value) { + buffer.put((index + pos) * STRIDE + 2, value); + } + + public final float y(int index) { + return buffer.get((index + pos) * STRIDE + 3); + } + + public final void y(int index, float value) { + buffer.put((index + pos) * STRIDE + 3, value); + } + + public final float z(int index) { + return buffer.get((index + pos) * STRIDE + 4); + } + + public final void z(int index, float value) { + buffer.put((index + pos) * STRIDE + 4, value); + } + + public final float s2(int index) { + return buffer.get((index + pos) * STRIDE + 5); + } + + public final void s2(int index, float value) { + buffer.put((index + pos) * STRIDE + 5, value); + } + + public final float t2(int index) { + return buffer.get((index + pos) * STRIDE + 6); + } + + public final void t2(int index, float value) { + buffer.put((index + pos) * STRIDE + 6, value); + } + + public final void beginScrolling(float scroll) { + int index = pos * STRIDE; + for (int i = 0; i < numverts; i++, index += STRIDE) { + scroll += s1_old[i] = buffer.get(index); + buffer.put(index, scroll); + } + } + + public final void endScrolling() { + int index = pos * STRIDE; + for (int i = 0; i < numverts; i++, index += STRIDE) { + buffer.put(index, s1_old[i]); + } + } +}
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