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 void fillTriangle(int x1, int y1, int x2, int y2, int x3, int y3, int argb) { throw new Error("not implemented"); }
62 public void drawPicture(Picture p, Affine a, Mesh h) { throw new Error("drawPicture() not implemented"); }
63 public void drawGlyph(Font.Glyph source,Affine a,Mesh h,int rgb,int bg) { throw new Error("drawGlyph() not implemented"); }
64 public int getWidth() { return width; }
65 public int getHeight() { return height; }
67 private boolean glScissorEnabled = false;
70 public GLPixelBuffer() { width = 500; height = 500; }
72 public GLPixelBuffer(int width, int height) {
77 // This should activate the drawing context and prepare the double buffer for drawing
78 protected abstract void activateContext();
80 protected static native void drawableInit(int w, int h);
82 private static native void setColor(int color);
84 public native void setClip(int x, int y, int x2, int y2);
85 public native void resetClip();
86 public native void fillTrapezoid(int x1, int x2, int y1, int x3, int x4, int y2, int color);
87 public void drawLine(int x1, int y1, int x2, int y2, int color) {
89 fillTrapezoid(x1, x1, y1, x2, x2, y2, color);
92 public void stroke(Mesh p, int color) { /*p.stroke(this, color);*/ }
93 public native void natFill(Mesh p, int color);
94 public void fill(Mesh p, Paint paint) { natFill(p, ((Paint.SingleColorPaint)paint).color); }
96 public void drawGlyph(org.ibex.graphics.Font.Glyph source, int dx, int dy,
97 int cx1, int cy1, int cx2, int cy2, int rgb, int pc) {
98 drawPicture_(((org.ibex.plat.Platform.DefaultGlyph)source).getPicture(), dx, dy, cx1, cy1, cx2, cy2, rgb);
100 public void drawPicture(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2) {
101 drawPicture_(source, dx, dy, cx1, cy1, cx2, cy2, 0xffffffff);
104 private void drawPicture_(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2, int color) {
107 GLPicture p = getInnerPicture(source, gl);
108 p.draw(dx,dy,cx1,cy1,cx2,cy2);
113 public static OpenGL gl = null;
114 public OpenGL() { gl = this; }
116 public final static int roundToPowerOf2(int n) {
117 if(((n-1)&n)==0) return n;
118 for(int x=2;x!=0;x<<=1) if(n < x) return x;
122 private static GLPicture getInnerPicture(Picture p, OpenGL gl) {
123 OpenGLPicture oglp = (OpenGLPicture)p;
124 if (!oglp.isLoaded || oglp.realPicture != null) return oglp.realPicture;
125 if (gl.rectangularTextures && p.width <= gl.maxRectTexSize && p.height <= gl.maxRectTexSize)
126 oglp.realPicture = new RectGLPicture(p.data,p.width,p.height,oglp.alphaOnly,gl);
127 else if (p.width <= gl.maxTexSize && p.height <= gl.maxTexSize)
128 oglp.realPicture = new SquareGLPicture(p.data,p.width,p.height,oglp.alphaOnly,gl);
130 oglp.realPicture = new MosaicGLPicture(p.data,p.width,p.height,oglp.alphaOnly,gl);
132 return oglp.realPicture;
135 public Picture _createPicture(JS r, boolean alphaOnly) { return new OpenGLPicture(r, false); }
137 public static class OpenGLPicture extends Picture {
138 public OpenGLPicture(JS r, boolean a) { super(r); alphaOnly = a; }
140 GLPicture realPicture = null;
143 public Font.Glyph _createGlyph(org.ibex.graphics.Font f, char c) { return new org.ibex.plat.Platform.DefaultGlyph(f, c); }
145 private native void natDeleteTexture(int tex);
146 public void deleteTexture(final int tex) {
147 // CHECKME: Is this safe to do from finalize()?
148 // natDeleteTexture MUST be run from the message queue thread
149 Platform.Scheduler.add(new Callable() { public Object run(Object o) { natDeleteTexture(tex); return null; }});
152 private static abstract class GLPicture {
154 protected int height;
156 public final int getWidth() { return width; }
157 public final int getHeight() { return height; }
159 public GLPicture(int w, int h) {
164 public abstract void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2);
165 protected abstract void finalize();
168 private static class RectGLPicture extends GLPicture {
170 public int textureName;
172 public native void natInit(Object data, boolean alphaOnly);
174 public RectGLPicture(Object data,int w, int h, boolean alphaOnly, OpenGL gl) {
177 natInit(data,alphaOnly);
180 public native void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2);
181 protected void finalize() { gl.deleteTexture(textureName); }
184 private static class SquareGLPicture extends GLPicture {
185 private int texHeight;
186 private int texWidth;
188 public int textureName;
190 public native void natInit(Object data, boolean alphaOnly);
192 public SquareGLPicture(Object data,int w, int h, boolean alphaOnly, OpenGL gl) {
195 if(w > 0x7fffffff || h > 0x7fffffff) throw new Error("insane texture size: " + w + "x" + h);
196 texHeight = roundToPowerOf2(h);
197 texWidth = roundToPowerOf2(w);
198 natInit(data,alphaOnly);
201 public native void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2);
202 protected void finalize() { gl.deleteTexture(textureName); }
205 private static class MosaicGLPicture extends GLPicture {
209 private static float wastedSpace(int w,int h,int size) {
210 int w2 = size * ((w+size-1)/size);
211 int h2 = size * ((h+size-1)/size);
212 return 1.0f-(float)(w*h)/(float)(w2*h2);
215 private static Object subData(Object data, int x, int y, int w, int h, int rowSize) {
216 if(data instanceof byte[]) return subData((byte[])data,x,y,w,h,rowSize);
217 if(data instanceof int[]) return subData((int[])data,x,y,w,h,rowSize);
218 throw new Error("not reached");
221 private static int[] subData(int[] data, int x, int y, int w, int h, int rowSize) {
222 int[] sub = new int[w*h];
224 for(int i=0;i<h;i++,row++)
226 sub[i*w+j] = data[row*rowSize+j+x];
230 private static byte[] subData(byte[] data, int x, int y, int w, int h, int rowSize) {
231 byte[] sub = new byte[w*h];
233 for(int i=0;i<h;i++,row++)
235 sub[i*w+j] = data[row*rowSize+j+x];
239 public MosaicGLPicture(Object data,int w, int h, boolean alphaOnly, OpenGL gl) {
241 psize = gl.maxTexSize;
242 while(wastedSpace(w,h,psize) > 0.40) psize/=2;
243 Log.info(this,"Using psize: " + psize + " for " + w + "x" + h + " image (wasted space: " + wastedSpace(w,h,psize));
245 int rows = (h+psize-1)/psize;
246 int cols = (w+psize-1)/psize;
249 pics = new GLPicture[rows][cols];
250 for(int i=0;i<rows-1;i++)
251 for(int j=0;j<cols-1;j++)
252 pics[i][j] = new SquareGLPicture(subData(data,j*psize,i*psize,psize,psize,w),psize,psize,alphaOnly,gl);
253 tmp = (rows-1)*psize;
254 for(int i=0;i<cols-1;i++)
255 pics[rows-1][i] = new SquareGLPicture(subData(data,i*psize,tmp,psize,h-tmp,w),psize,h-tmp,alphaOnly,gl);
256 tmp2 = (cols-1)*psize;
257 for(int i=0;i<rows-1;i++)
258 pics[i][cols-1] = new SquareGLPicture(subData(data,tmp2,i*psize,w-tmp2,psize,w),w-tmp2,psize,alphaOnly,gl);
259 pics[rows-1][cols-1] = new SquareGLPicture(subData(data,tmp2,tmp,w-tmp2,h-tmp,w),w-tmp2,h-tmp,alphaOnly,gl);
261 protected void finalize() { }
263 private static final int max(int a, int b) { return a > b ? a : b; }
264 private static final int min(int a, int b) { return a < b ? a : b; }
266 public void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2) {
267 // *{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
268 for(int i=0;i<pics.length;i++) {
269 for(int j=0;j<pics[i].length;j++) {
270 int px1 = j*psize + dx;
271 int py1 = i*psize + dy;
272 pics[i][j].draw(px1, py1, cx1, cy1, cx2, cy2);