1 // Copyright 2003 Adam Megacz, see the COPYING file for licensing [LGPL]
2 // Author: Brian Alliet
8 abstract class OpenGL {
9 static final boolean pretendToBeACrappyVideoCard = false;
10 boolean rectangularTextures;
11 boolean hasRectangularTextures() { return rectangularTextures; }
19 private native void natInit();
21 private static float parseVersion(String s) {
22 int end = s.indexOf(' ');
23 if(end < 0) end = s.length();
25 return Float.parseFloat(s.substring(0,end));
26 } catch(NumberFormatException e) {
27 return 1.1f; // just a guess
31 // This MUST be called after OpenGL is instansiated (and activateSharedInterpreter is functioning)
32 public void init() throws NotSupportedException {
34 glVersion = parseVersion(version);
35 if(glVersion < 1.1) throw new NotSupportedException("OpenGL 1.1 or greater is required. (you have: " + version +" - " + glVersion + ")");
36 if(pretendToBeACrappyVideoCard) {
39 rectangularTextures = false;
41 Log.diag(this,"Renderer: " + renderer);
42 Log.diag(this,"Version: " + version);
43 Log.diag(this,"Vendor: " + vendor);
44 Log.diag(this,"Rectangular textures: " + (rectangularTextures ? "supported" : "unsupported"));
45 Log.diag(this,"Max texture size: " + maxTexSize);
46 Log.diag(this,"Max rectangular texture size: " + maxRectTexSize);
49 protected abstract void activateSharedInterpreter();
51 public static class NotSupportedException extends Exception {
52 public NotSupportedException(String s) { super(s); }
55 public static abstract class GLPixelBuffer extends PixelBuffer {
58 public int getWidth() { return width; }
59 public int getHeight() { return height; }
61 private boolean glScissorEnabled = false;
63 public GLPixelBuffer(int width, int height) {
68 // This should activate the drawing context and prepare the double buffer for drawing
69 protected abstract void activateInterpreter();
71 protected static native void drawableInit(int w, int h);
73 private static native void setColor(int color);
75 public native void setClip(int x, int y, int x2, int y2);
76 public native void resetClip();
77 public native void fillTrapezoid(int x1, int x2, int y1, int x3, int x4, int y2, int color);
79 public void drawString(String font, String text, int x, int y, int color) {
80 //System.out.println("drawString(): " + text);
83 public void drawGlyph(org.xwt.Font.Glyph source, int dx, int dy, int cx1, int cy1, int cx2, int cy2, int rgb) {
84 drawPicture_(((org.xwt.Platform.DefaultGlyph)source).getPicture(), dx, dy, cx1, cy1, cx2, cy2, rgb);
86 public void drawPicture(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2) {
87 drawPicture_(source, dx, dy, cx1, cy1, cx2, cy2, 0xffffffff);
90 private void drawPicture_(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2, int color) {
91 activateInterpreter();
93 GLPicture p = getInnerPicture(source, gl);
94 p.draw(dx,dy,cx1,cy1,cx2,cy2);
99 public static OpenGL gl = null;
100 public OpenGL() { gl = this; }
102 public final static int roundToPowerOf2(int n) {
103 if(((n-1)&n)==0) return n;
104 for(int x=2;x!=0;x<<=1) if(n < x) return x;
108 private static GLPicture getInnerPicture(Picture p, OpenGL gl) {
109 OpenGLPicture oglp = (OpenGLPicture)p;
110 if (!oglp.isLoaded || oglp.realPicture != null) return oglp.realPicture;
111 if (gl.rectangularTextures && p.width <= gl.maxRectTexSize && p.height <= gl.maxRectTexSize)
112 oglp.realPicture = new RectGLPicture(p.data,p.width,p.height,oglp.alphaOnly,gl);
113 else if (p.width <= gl.maxTexSize && p.height <= gl.maxTexSize)
114 oglp.realPicture = new SquareGLPicture(p.data,p.width,p.height,oglp.alphaOnly,gl);
116 oglp.realPicture = new MosaicGLPicture(p.data,p.width,p.height,oglp.alphaOnly,gl);
118 return oglp.realPicture;
121 public Picture _createPicture(boolean alphaOnly) { return new OpenGLPicture(alphaOnly); }
123 public static class OpenGLPicture extends Picture {
124 public OpenGLPicture(boolean a) { alphaOnly = a; }
126 GLPicture realPicture = null;
129 public Font.Glyph _createGlyph(org.xwt.Font f, char c) { return new OpenGLGlyph(f, c); }
131 public static class OpenGLGlyph extends Font.Glyph {
132 private Picture p = null;
133 public OpenGLGlyph(org.xwt.Font f, char c) { super(f, c); }
134 Picture getPicture() {
135 if (p == null && isLoaded) {
136 p = new OpenGLPicture(true);
137 p.data = new int[data.length];
138 for(int i=0; i<data.length; i++) p.data[i] = (data[i] & 0xff) << 24;
140 p.width = this.width;
141 p.height = this.height;
147 private native void natDeleteTexture(int tex);
148 public void deleteTexture(final int tex) {
149 // CHECKME: Is this safe to do from finalize()?
150 // natDeleteTexture MUST be run from the message queue thread
151 Scheduler.add(new Scheduler.Task() { public void perform() { natDeleteTexture(tex); }});
154 private static abstract class GLPicture {
156 protected int height;
158 public final int getWidth() { return width; }
159 public final int getHeight() { return height; }
161 public GLPicture(int w, int h) {
166 public abstract void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2);
167 protected abstract void finalize();
170 private static class RectGLPicture extends GLPicture {
172 public int textureName;
174 public native void natInit(Object data, boolean alphaOnly);
176 public RectGLPicture(Object data,int w, int h, boolean alphaOnly, OpenGL gl) {
179 natInit(data,alphaOnly);
182 public native void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2);
183 protected void finalize() { gl.deleteTexture(textureName); }
186 private static class SquareGLPicture extends GLPicture {
187 private int texHeight;
188 private int texWidth;
190 public int textureName;
192 public native void natInit(Object data, boolean alphaOnly);
194 public SquareGLPicture(Object data,int w, int h, boolean alphaOnly, OpenGL gl) {
197 if(w > 0x7fffffff || h > 0x7fffffff) throw new Error("insane texture size: " + w + "x" + h);
198 texHeight = roundToPowerOf2(h);
199 texWidth = roundToPowerOf2(w);
200 natInit(data,alphaOnly);
203 public native void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2);
204 protected void finalize() { gl.deleteTexture(textureName); }
207 private static class MosaicGLPicture extends GLPicture {
208 private static final int overlap = 8;
213 private static float wastedSpace(int w,int h,int size) {
214 int w2 = size * ((w+size-1)/size);
215 int h2 = size * ((h+size-1)/size);
216 return 1.0f-(float)(w*h)/(float)(w2*h2);
219 private static Object subData(Object data, int x, int y, int w, int h, int rowSize) {
220 if(data instanceof byte[]) return subData((byte[])data,x,y,w,h,rowSize);
221 if(data instanceof int[]) return subData((int[])data,x,y,w,h,rowSize);
222 throw new Error("not reached");
225 private static int[] subData(int[] data, int x, int y, int w, int h, int rowSize) {
226 int[] sub = new int[w*h];
228 for(int i=0;i<h;i++,row++)
230 sub[i*w+j] = data[row*rowSize+j+x];
234 private static byte[] subData(byte[] data, int x, int y, int w, int h, int rowSize) {
235 byte[] sub = new byte[w*h];
237 for(int i=0;i<h;i++,row++)
239 sub[i*w+j] = data[row*rowSize+j+x];
243 public MosaicGLPicture(Object data,int w, int h, boolean alphaOnly, OpenGL gl) {
245 psize = gl.maxTexSize;
246 while(wastedSpace(w,h,psize) > 0.40) psize/=2;
247 Log.info(this,"Using psize: " + psize + " for " + w + "x" + h + " image (wasted space: " + wastedSpace(w,h,psize));
249 int rows = (h+psize-1)/psize;
250 int cols = (w+psize-1)/psize;
253 pics = new GLPicture[rows][cols];
254 for(int i=0;i<rows-1;i++)
255 for(int j=0;j<cols-1;j++)
256 pics[i][j] = new SquareGLPicture(subData(data,j*psize,i*psize,psize,psize,w),psize,psize,alphaOnly,gl);
257 tmp = (rows-1)*psize;
258 for(int i=0;i<cols-1;i++)
259 pics[rows-1][i] = new SquareGLPicture(subData(data,i*psize,tmp,psize,h-tmp,w),psize,h-tmp,alphaOnly,gl);
260 tmp2 = (cols-1)*psize;
261 for(int i=0;i<rows-1;i++)
262 pics[i][cols-1] = new SquareGLPicture(subData(data,tmp2,i*psize,w-tmp2,psize,w),w-tmp2,psize,alphaOnly,gl);
263 pics[rows-1][cols-1] = new SquareGLPicture(subData(data,tmp2,tmp,w-tmp2,h-tmp,w),w-tmp2,h-tmp,alphaOnly,gl);
265 protected void finalize() { }
267 private static final int max(int a, int b) { return a > b ? a : b; }
268 private static final int min(int a, int b) { return a < b ? a : b; }
270 public void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2) {
271 int totalWidth = width;
272 int totalHeight = height;
273 // *{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
274 for(int i=0;i<pics.length;i++) {
275 for(int j=0;j<pics[i].length;j++) {
276 int px1 = j*psize + dx;
277 int py1 = i*psize + dy;
278 pics[i][j].draw(px1, py1, cx1, cy1, cx2, cy2);