1 // Copyright 2004 Adam Megacz, see the COPYING file for licensing [LGPL]
2 // Author: Brian Alliet
6 import org.ibex.util.*;
7 import org.ibex.graphics.*;
8 import org.ibex.core.*;
11 abstract class OpenGL {
12 static final boolean pretendToBeACrappyVideoCard = false;
13 boolean rectangularTextures;
14 boolean hasRectangularTextures() { return rectangularTextures; }
22 private native void natInit();
24 private static float parseVersion(String s) {
25 int end = s.indexOf(' ');
26 if(end < 0) end = s.length();
28 return Float.parseFloat(s.substring(0,end));
29 } catch(NumberFormatException e) {
30 return 1.1f; // just a guess
34 // This MUST be called after OpenGL is instansiated (and activateSharedContext is functioning)
35 public void init() throws NotSupportedException {
37 glVersion = parseVersion(version);
38 if(glVersion < 1.1) throw new NotSupportedException("OpenGL 1.1 or greater is required. (you have: " + version +" - " + glVersion + ")");
39 if(pretendToBeACrappyVideoCard) {
42 rectangularTextures = false;
44 Log.diag(this,"Renderer: " + renderer);
45 Log.diag(this,"Version: " + version);
46 Log.diag(this,"Vendor: " + vendor);
47 Log.diag(this,"Rectangular textures: " + (rectangularTextures ? "supported" : "unsupported"));
48 Log.diag(this,"Max texture size: " + maxTexSize);
49 Log.diag(this,"Max rectangular texture size: " + maxRectTexSize);
52 protected abstract void activateSharedContext();
54 public static class NotSupportedException extends Exception {
55 public NotSupportedException(String s) { super(s); }
58 public static abstract class GLPixelBuffer implements PixelBuffer {
61 public int getWidth() { return width; }
62 public int getHeight() { return height; }
64 private boolean glScissorEnabled = false;
67 public GLPixelBuffer() { width = 500; height = 500; }
69 public GLPixelBuffer(int width, int height) {
74 // This should activate the drawing context and prepare the double buffer for drawing
75 protected abstract void activateContext();
77 protected static native void drawableInit(int w, int h);
79 private static native void setColor(int color);
81 public native void setClip(int x, int y, int x2, int y2);
82 public native void resetClip();
83 public native void fillTrapezoid(int x1, int x2, int y1, int x3, int x4, int y2, int color);
84 public void drawLine(int x1, int y1, int x2, int y2, int color) {
86 fillTrapezoid(x1, x1, y1, x2, x2, y2, color);
89 public void stroke(Polygon p, int color) { p.stroke(this, color); }
90 public native void natFill(Polygon p, int color);
91 public void fill(Polygon p, Paint paint) { natFill(p, ((Paint.SingleColorPaint)paint).color); }
93 public void drawGlyph(org.ibex.graphics.Font.Glyph source, int dx, int dy,
94 int cx1, int cy1, int cx2, int cy2, int rgb, int pc) {
95 drawPicture_(((org.ibex.plat.Platform.DefaultGlyph)source).getPicture(), dx, dy, cx1, cy1, cx2, cy2, rgb);
97 public void drawPicture(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2) {
98 drawPicture_(source, dx, dy, cx1, cy1, cx2, cy2, 0xffffffff);
101 private void drawPicture_(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2, int color) {
104 GLPicture p = getInnerPicture(source, gl);
105 p.draw(dx,dy,cx1,cy1,cx2,cy2);
110 public static OpenGL gl = null;
111 public OpenGL() { gl = this; }
113 public final static int roundToPowerOf2(int n) {
114 if(((n-1)&n)==0) return n;
115 for(int x=2;x!=0;x<<=1) if(n < x) return x;
119 private static GLPicture getInnerPicture(Picture p, OpenGL gl) {
120 OpenGLPicture oglp = (OpenGLPicture)p;
121 if (!oglp.isLoaded || oglp.realPicture != null) return oglp.realPicture;
122 if (gl.rectangularTextures && p.width <= gl.maxRectTexSize && p.height <= gl.maxRectTexSize)
123 oglp.realPicture = new RectGLPicture(p.data,p.width,p.height,oglp.alphaOnly,gl);
124 else if (p.width <= gl.maxTexSize && p.height <= gl.maxTexSize)
125 oglp.realPicture = new SquareGLPicture(p.data,p.width,p.height,oglp.alphaOnly,gl);
127 oglp.realPicture = new MosaicGLPicture(p.data,p.width,p.height,oglp.alphaOnly,gl);
129 return oglp.realPicture;
132 public Picture _createPicture(JS r, boolean alphaOnly) { return new OpenGLPicture(r, false); }
134 public static class OpenGLPicture extends Picture {
135 public OpenGLPicture(JS r, boolean a) { super(r); alphaOnly = a; }
137 GLPicture realPicture = null;
140 public Font.Glyph _createGlyph(org.ibex.graphics.Font f, char c) { return new org.ibex.plat.Platform.DefaultGlyph(f, c); }
142 private native void natDeleteTexture(int tex);
143 public void deleteTexture(final int tex) {
144 // CHECKME: Is this safe to do from finalize()?
145 // natDeleteTexture MUST be run from the message queue thread
146 Scheduler.add(new Callable() { public Object run(Object o) { natDeleteTexture(tex); return null; }});
149 private static abstract class GLPicture {
151 protected int height;
153 public final int getWidth() { return width; }
154 public final int getHeight() { return height; }
156 public GLPicture(int w, int h) {
161 public abstract void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2);
162 protected abstract void finalize();
165 private static class RectGLPicture extends GLPicture {
167 public int textureName;
169 public native void natInit(Object data, boolean alphaOnly);
171 public RectGLPicture(Object data,int w, int h, boolean alphaOnly, OpenGL gl) {
174 natInit(data,alphaOnly);
177 public native void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2);
178 protected void finalize() { gl.deleteTexture(textureName); }
181 private static class SquareGLPicture extends GLPicture {
182 private int texHeight;
183 private int texWidth;
185 public int textureName;
187 public native void natInit(Object data, boolean alphaOnly);
189 public SquareGLPicture(Object data,int w, int h, boolean alphaOnly, OpenGL gl) {
192 if(w > 0x7fffffff || h > 0x7fffffff) throw new Error("insane texture size: " + w + "x" + h);
193 texHeight = roundToPowerOf2(h);
194 texWidth = roundToPowerOf2(w);
195 natInit(data,alphaOnly);
198 public native void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2);
199 protected void finalize() { gl.deleteTexture(textureName); }
202 private static class MosaicGLPicture extends GLPicture {
206 private static float wastedSpace(int w,int h,int size) {
207 int w2 = size * ((w+size-1)/size);
208 int h2 = size * ((h+size-1)/size);
209 return 1.0f-(float)(w*h)/(float)(w2*h2);
212 private static Object subData(Object data, int x, int y, int w, int h, int rowSize) {
213 if(data instanceof byte[]) return subData((byte[])data,x,y,w,h,rowSize);
214 if(data instanceof int[]) return subData((int[])data,x,y,w,h,rowSize);
215 throw new Error("not reached");
218 private static int[] subData(int[] data, int x, int y, int w, int h, int rowSize) {
219 int[] sub = new int[w*h];
221 for(int i=0;i<h;i++,row++)
223 sub[i*w+j] = data[row*rowSize+j+x];
227 private static byte[] subData(byte[] data, int x, int y, int w, int h, int rowSize) {
228 byte[] sub = new byte[w*h];
230 for(int i=0;i<h;i++,row++)
232 sub[i*w+j] = data[row*rowSize+j+x];
236 public MosaicGLPicture(Object data,int w, int h, boolean alphaOnly, OpenGL gl) {
238 psize = gl.maxTexSize;
239 while(wastedSpace(w,h,psize) > 0.40) psize/=2;
240 Log.info(this,"Using psize: " + psize + " for " + w + "x" + h + " image (wasted space: " + wastedSpace(w,h,psize));
242 int rows = (h+psize-1)/psize;
243 int cols = (w+psize-1)/psize;
246 pics = new GLPicture[rows][cols];
247 for(int i=0;i<rows-1;i++)
248 for(int j=0;j<cols-1;j++)
249 pics[i][j] = new SquareGLPicture(subData(data,j*psize,i*psize,psize,psize,w),psize,psize,alphaOnly,gl);
250 tmp = (rows-1)*psize;
251 for(int i=0;i<cols-1;i++)
252 pics[rows-1][i] = new SquareGLPicture(subData(data,i*psize,tmp,psize,h-tmp,w),psize,h-tmp,alphaOnly,gl);
253 tmp2 = (cols-1)*psize;
254 for(int i=0;i<rows-1;i++)
255 pics[i][cols-1] = new SquareGLPicture(subData(data,tmp2,i*psize,w-tmp2,psize,w),w-tmp2,psize,alphaOnly,gl);
256 pics[rows-1][cols-1] = new SquareGLPicture(subData(data,tmp2,tmp,w-tmp2,h-tmp,w),w-tmp2,h-tmp,alphaOnly,gl);
258 protected void finalize() { }
260 private static final int max(int a, int b) { return a > b ? a : b; }
261 private static final int min(int a, int b) { return a < b ? a : b; }
263 public void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2) {
264 // *{x,y}{1,2} key: d=dest s=src, p=bounds of this picture, i=intersection of s and p, pd = dest of this pic
265 for(int i=0;i<pics.length;i++) {
266 for(int j=0;j<pics[i].length;j++) {
267 int px1 = j*psize + dx;
268 int py1 = i*psize + dy;
269 pics[i][j].draw(px1, py1, cx1, cy1, cx2, cy2);