--- /dev/null
+// Copyright 2004 Adam Megacz, see the COPYING file for licensing [LGPL]
+// Author: Brian Alliet
+
+package org.ibex.plat;
+import org.ibex.*;
+import org.ibex.js.*;
+import org.ibex.util.*;
+
+abstract class OpenGL {
+ static final boolean pretendToBeACrappyVideoCard = false;
+ boolean rectangularTextures;
+ boolean hasRectangularTextures() { return rectangularTextures; }
+ int maxTexSize;
+ int maxRectTexSize;
+ float glVersion;
+ String version;
+ String renderer;
+ String vendor;
+
+ private native void natInit();
+
+ private static float parseVersion(String s) {
+ int end = s.indexOf(' ');
+ if(end < 0) end = s.length();
+ try {
+ return Float.parseFloat(s.substring(0,end));
+ } catch(NumberFormatException e) {
+ return 1.1f; // just a guess
+ }
+ }
+
+ // This MUST be called after OpenGL is instansiated (and activateSharedContext is functioning)
+ public void init() throws NotSupportedException {
+ natInit();
+ glVersion = parseVersion(version);
+ if(glVersion < 1.1) throw new NotSupportedException("OpenGL 1.1 or greater is required. (you have: " + version +" - " + glVersion + ")");
+ if(pretendToBeACrappyVideoCard) {
+ maxTexSize = 512;
+ maxRectTexSize = 0;
+ rectangularTextures = false;
+ }
+ Log.diag(this,"Renderer: " + renderer);
+ Log.diag(this,"Version: " + version);
+ Log.diag(this,"Vendor: " + vendor);
+ Log.diag(this,"Rectangular textures: " + (rectangularTextures ? "supported" : "unsupported"));
+ Log.diag(this,"Max texture size: " + maxTexSize);
+ Log.diag(this,"Max rectangular texture size: " + maxRectTexSize);
+ }
+
+ protected abstract void activateSharedContext();
+
+ public static class NotSupportedException extends Exception {
+ public NotSupportedException(String s) { super(s); }
+ }
+
+ public static abstract class GLPixelBuffer extends PixelBuffer {
+ protected int width;
+ protected int height;
+ public int getWidth() { return width; }
+ public int getHeight() { return height; }
+
+ private boolean glScissorEnabled = false;
+
+ public GLPixelBuffer(int width, int height) {
+ this.width = width;
+ this.height = height;
+ }
+
+ // This should activate the drawing context and prepare the double buffer for drawing
+ protected abstract void activateContext();
+
+ protected static native void drawableInit(int w, int h);
+
+ private static native void setColor(int color);
+
+ public native void setClip(int x, int y, int x2, int y2);
+ public native void resetClip();
+ public native void fillTrapezoid(int x1, int x2, int y1, int x3, int x4, int y2, int color);
+
+ public void drawString(String font, String text, int x, int y, int color) {
+ //System.out.println("drawString(): " + text);
+ }
+
+ public void drawGlyph(org.ibex.Font.Glyph source, int dx, int dy, int cx1, int cy1, int cx2, int cy2, int rgb) {
+ drawPicture_(((org.ibex.Platform.DefaultGlyph)source).getPicture(), dx, dy, cx1, cy1, cx2, cy2, rgb);
+ }
+ public void drawPicture(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2) {
+ drawPicture_(source, dx, dy, cx1, cy1, cx2, cy2, 0xffffffff);
+ }
+
+ private void drawPicture_(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2, int color) {
+ activateContext();
+ setColor(color);
+ GLPicture p = getInnerPicture(source, gl);
+ p.draw(dx,dy,cx1,cy1,cx2,cy2);
+ }
+ }
+
+ // FIXME ugly
+ public static OpenGL gl = null;
+ public OpenGL() { gl = this; }
+
+ public final static int roundToPowerOf2(int n) {
+ if(((n-1)&n)==0) return n;
+ for(int x=2;x!=0;x<<=1) if(n < x) return x;
+ return 0;
+ }
+
+ private static GLPicture getInnerPicture(Picture p, OpenGL gl) {
+ OpenGLPicture oglp = (OpenGLPicture)p;
+ if (!oglp.isLoaded || oglp.realPicture != null) return oglp.realPicture;
+ if (gl.rectangularTextures && p.width <= gl.maxRectTexSize && p.height <= gl.maxRectTexSize)
+ oglp.realPicture = new RectGLPicture(p.data,p.width,p.height,oglp.alphaOnly,gl);
+ else if (p.width <= gl.maxTexSize && p.height <= gl.maxTexSize)
+ oglp.realPicture = new SquareGLPicture(p.data,p.width,p.height,oglp.alphaOnly,gl);
+ else
+ oglp.realPicture = new MosaicGLPicture(p.data,p.width,p.height,oglp.alphaOnly,gl);
+ p.data = null;
+ return oglp.realPicture;
+ }
+
+ public Picture _createPicture(JS r, boolean alphaOnly) { return new OpenGLPicture(r, false); }
+
+ public static class OpenGLPicture extends Picture {
+ public OpenGLPicture(JS r, boolean a) { super(r); alphaOnly = a; }
+ boolean alphaOnly;
+ GLPicture realPicture = null;
+ }
+
+ public Font.Glyph _createGlyph(org.ibex.Font f, char c) { return new org.ibex.Platform.DefaultGlyph(f, c); }
+
+ private native void natDeleteTexture(int tex);
+ public void deleteTexture(final int tex) {
+ // CHECKME: Is this safe to do from finalize()?
+ // natDeleteTexture MUST be run from the message queue thread
+ Scheduler.add(new Scheduler.Task() { public void perform() { natDeleteTexture(tex); }});
+ }
+
+ private static abstract class GLPicture {
+ protected int width;
+ protected int height;
+
+ public final int getWidth() { return width; }
+ public final int getHeight() { return height; }
+
+ public GLPicture(int w, int h) {
+ this.width = w;
+ this.height = h;
+ }
+
+ public abstract void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2);
+ protected abstract void finalize();
+ }
+
+ private static class RectGLPicture extends GLPicture {
+ private OpenGL gl;
+ public int textureName;
+
+ public native void natInit(Object data, boolean alphaOnly);
+
+ public RectGLPicture(Object data,int w, int h, boolean alphaOnly, OpenGL gl) {
+ super(w,h);
+ this.gl = gl;
+ natInit(data,alphaOnly);
+ }
+
+ public native void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2);
+ protected void finalize() { gl.deleteTexture(textureName); }
+ }
+
+ private static class SquareGLPicture extends GLPicture {
+ private int texHeight;
+ private int texWidth;
+ private OpenGL gl;
+ public int textureName;
+
+ public native void natInit(Object data, boolean alphaOnly);
+
+ public SquareGLPicture(Object data,int w, int h, boolean alphaOnly, OpenGL gl) {
+ super(w,h);
+ this.gl = gl;
+ if(w > 0x7fffffff || h > 0x7fffffff) throw new Error("insane texture size: " + w + "x" + h);
+ texHeight = roundToPowerOf2(h);
+ texWidth = roundToPowerOf2(w);
+ natInit(data,alphaOnly);
+ }
+
+ public native void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2);
+ protected void finalize() { gl.deleteTexture(textureName); }
+ }
+
+ private static class MosaicGLPicture extends GLPicture {
+ private static final int overlap = 8;
+
+ int psize;
+ GLPicture[][] pics;
+
+ private static float wastedSpace(int w,int h,int size) {
+ int w2 = size * ((w+size-1)/size);
+ int h2 = size * ((h+size-1)/size);
+ return 1.0f-(float)(w*h)/(float)(w2*h2);
+ }
+
+ private static Object subData(Object data, int x, int y, int w, int h, int rowSize) {
+ if(data instanceof byte[]) return subData((byte[])data,x,y,w,h,rowSize);
+ if(data instanceof int[]) return subData((int[])data,x,y,w,h,rowSize);
+ throw new Error("not reached");
+ }
+
+ private static int[] subData(int[] data, int x, int y, int w, int h, int rowSize) {
+ int[] sub = new int[w*h];
+ int row = y;
+ for(int i=0;i<h;i++,row++)
+ for(int j=0;j<w;j++)
+ sub[i*w+j] = data[row*rowSize+j+x];
+ return sub;
+ }
+
+ private static byte[] subData(byte[] data, int x, int y, int w, int h, int rowSize) {
+ byte[] sub = new byte[w*h];
+ int row = y;
+ for(int i=0;i<h;i++,row++)
+ for(int j=0;j<w;j++)
+ sub[i*w+j] = data[row*rowSize+j+x];
+ return sub;
+ }
+
+ public MosaicGLPicture(Object data,int w, int h, boolean alphaOnly, OpenGL gl) {
+ super(w,h);
+ psize = gl.maxTexSize;
+ while(wastedSpace(w,h,psize) > 0.40) psize/=2;
+ Log.info(this,"Using psize: " + psize + " for " + w + "x" + h + " image (wasted space: " + wastedSpace(w,h,psize));
+
+ int rows = (h+psize-1)/psize;
+ int cols = (w+psize-1)/psize;
+ int tmp,tmp2;
+
+ pics = new GLPicture[rows][cols];
+ for(int i=0;i<rows-1;i++)
+ for(int j=0;j<cols-1;j++)
+ pics[i][j] = new SquareGLPicture(subData(data,j*psize,i*psize,psize,psize,w),psize,psize,alphaOnly,gl);
+ tmp = (rows-1)*psize;
+ for(int i=0;i<cols-1;i++)
+ pics[rows-1][i] = new SquareGLPicture(subData(data,i*psize,tmp,psize,h-tmp,w),psize,h-tmp,alphaOnly,gl);
+ tmp2 = (cols-1)*psize;
+ for(int i=0;i<rows-1;i++)
+ pics[i][cols-1] = new SquareGLPicture(subData(data,tmp2,i*psize,w-tmp2,psize,w),w-tmp2,psize,alphaOnly,gl);
+ pics[rows-1][cols-1] = new SquareGLPicture(subData(data,tmp2,tmp,w-tmp2,h-tmp,w),w-tmp2,h-tmp,alphaOnly,gl);
+ }
+ protected void finalize() { }
+
+ private static final int max(int a, int b) { return a > b ? a : b; }
+ private static final int min(int a, int b) { return a < b ? a : b; }
+
+ public void draw(int dx, int dy, int cx1, int cy1, int cx2, int cy2) {
+ int totalWidth = width;
+ int totalHeight = height;
+ // *{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
+ for(int i=0;i<pics.length;i++) {
+ for(int j=0;j<pics[i].length;j++) {
+ int px1 = j*psize + dx;
+ int py1 = i*psize + dy;
+ pics[i][j].draw(px1, py1, cx1, cy1, cx2, cy2);
+ }
+ }
+ }
+ }
+}
projects / org.ibex.core.git / blobdiff