--- /dev/null
+// Copyright 2003 Adam Megacz, see the COPYING file for licensing [LGPL]
+// Author: Brian Alliet
+
+// IMPROVMENT: use alpha testing? might be faster
+
+#include <org/ibex/plat/OpenGL.h>
+#include <org/ibex/plat/OpenGL$GLPixelBuffer.h>
+#include <org/ibex/plat/OpenGL$GLPicture.h>
+#include <org/ibex/plat/OpenGL$RectGLPicture.h>
+#include <org/ibex/plat/OpenGL$SquareGLPicture.h>
+#include <org/ibex/plat/OpenGL$MosaicGLPicture.h>
+
+#include <java/lang/Error.h>
+
+#ifdef __APPLE__
+#include <OpenGL/gl.h>
+#include <OpenGL/glu.h>
+#include <OpenGL/glext.h>
+#else
+#warning I am not sure if these are correct
+#include <gl/gl.h>
+#include <gl/glu.h>
+#include <gl/glext.h>
+#endif
+
+#include <stdio.h>
+
+#define min(a,b) ((a)<(b)?(a):(b))
+#define max(a,b) ((a)>(b)?(a):(b))
+
+namespace org { namespace ibex { namespace plat {
+
+#define checkGLError() checkGLError2(__FILE__,__LINE__)
+static void checkGLError2(const char *file,int line) {
+ GLenum err = glGetError();
+ if(err == GL_NO_ERROR) return;
+
+ fprintf(stderr,"%s:%d: GL Error: %s",file,line,(char *) gluErrorString(err));
+ exit(EXIT_FAILURE);
+}
+
+void OpenGL::natInit() {
+ GLint i;
+ const GLubyte *s;
+ activateSharedContext();
+ s = glGetString(GL_EXTENSIONS);
+ rectangularTextures = (jboolean) gluCheckExtension((GLubyte*)"GL_EXT_texture_rectangle",s);
+ glGetIntegerv(GL_MAX_TEXTURE_SIZE,&i);
+ maxTexSize = (jint) i;
+ if(rectangularTextures) {
+ glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE_EXT,&i);
+ maxRectTexSize = (jint) i;
+ }
+ s = glGetString(GL_VENDOR);
+ vendor = JvNewStringLatin1(s==0 ? "" : (char*)s);
+ s = glGetString(GL_RENDERER);
+ renderer = JvNewStringLatin1(s==0 ? "" : (char*)s);
+ s = glGetString(GL_VERSION);
+ version = JvNewStringLatin1(s==0 ? "" : (char*)s);
+}
+
+void OpenGL$GLPixelBuffer::drawableInit(jint width, jint height) {
+ glClearColor (0.3f, 0.7f, 1.0f, 1.0f);
+ glClearDepth( 0.0f );
+ glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
+ glShadeModel(GL_SMOOTH);
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+ glViewport(0,0,width,height);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(0,width,height,0,-1,1);
+ // CHECKME: This causes textures to be blurry, but something like this
+ // (but not this) might be required to draw straight lines
+ //glMatrixMode(GL_MODELVIEW);
+ //glLoadIdentity();
+ //glTranslatef(0.375, 0.375, 0.0);
+
+ checkGLError();
+}
+
+void OpenGL$GLPixelBuffer::setColor(jint argb) {
+ float alpha = ((argb >> 24) & 0xff) / 255.0;
+ float red = ((argb >> 16) & 0xff) / 255.0;
+ float green = ((argb >> 8) & 0xff) / 255.0;
+ float blue = ((argb >> 0) & 0xff) / 255.0;
+ glColor4f(red,green,blue,alpha);
+}
+
+void OpenGL$GLPixelBuffer::fillTrapezoid(jint x1, jint x2, jint y1, jint x3, jint x4, jint y2, jint color) {
+ activateContext();
+ setColor(color);
+ glBegin(GL_QUADS); {
+ glVertex3f(x1,y1,0.0f );
+ glVertex3f(x3,y2,0.0f );
+ glVertex3f(x4,y2,0.0f );
+ glVertex3f(x2,y1,0.0f );
+ } glEnd();
+}
+
+void OpenGL$GLPixelBuffer::setClip(jint x1, jint y1, jint x2, jint y2) {
+ //fprintf(stderr,"setClip: %d %d %d %d\n",x1,y1,x2,y2);
+ if(x1==0 && y1==0 && x2==width && y2==height) {
+ if(glScissorEnabled) {
+ activateContext();
+ glDisable(GL_SCISSOR_TEST);
+ glScissorEnabled = false;
+ }
+ return;
+ }
+ activateContext();
+ if(!glScissorEnabled) {
+ glEnable(GL_SCISSOR_TEST);
+ glScissorEnabled = true;
+ }
+ if((x1 >= x2) || (y1 >= y2))
+ glScissor(0,0,0,0);
+ else
+ glScissor(x1,height-y2,x2-x1,y2-y1);
+ checkGLError();
+}
+
+void OpenGL$GLPixelBuffer::resetClip() {
+ activateContext();
+ if(glScissorEnabled) {
+ glDisable(GL_SCISSOR_TEST);
+ glScissorEnabled = false;
+ }
+}
+
+// FEATURE: Eliminate duplicate code in RectGLPicture and SquareGLPicture
+void OpenGL$RectGLPicture::natInit(Object *data_, jboolean alphaOnly) {
+ unsigned char *buf;
+ int i,j;
+ int size = width*height;
+ GLuint tex;
+
+ if(alphaOnly) {
+ jbyte *data = elements((JArray<jbyte> *)data_);
+ buf = (unsigned char *) data;
+ } else {
+ jint *data = elements((JArray<jint> *)data_);
+ buf = new unsigned char[size*4];
+ for(i=0,j=0;i<size;i++,j+=4) {
+ jint pixel = data[i];
+ buf[j+0] = (pixel >> 16) & 0xff;
+ buf[j+1] = (pixel >> 8) & 0xff;
+ buf[j+2] = (pixel >> 0) & 0xff;
+ buf[j+3] = (pixel >> 24) & 0xff;
+ }
+ }
+
+ gl->activateSharedContext();
+ glEnable(GL_TEXTURE_RECTANGLE_EXT);
+ glGenTextures(1,&tex);
+ glBindTexture(GL_TEXTURE_RECTANGLE_EXT,tex);
+ glPixelStorei(GL_PACK_ALIGNMENT,1);
+ glTexImage2D(
+ GL_TEXTURE_RECTANGLE_EXT,0,
+ alphaOnly ? GL_ALPHA : GL_RGBA,width,height,0,
+ alphaOnly ? GL_ALPHA : GL_RGBA,GL_UNSIGNED_BYTE,buf);
+ if(!alphaOnly)
+ delete buf;
+
+ if(gl->glVersion >= 1.2) {
+ glTexParameteri(GL_TEXTURE_RECTANGLE_EXT,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_RECTANGLE_EXT,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
+ glTexParameterf(GL_TEXTURE_RECTANGLE_EXT,GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+ glTexParameterf(GL_TEXTURE_RECTANGLE_EXT,GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+ } else {
+ glTexParameteri(GL_TEXTURE_RECTANGLE_EXT,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_RECTANGLE_EXT,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
+ }
+
+ glDisable(GL_TEXTURE_RECTANGLE_EXT);
+ checkGLError();
+
+ textureName = (jint)tex;
+}
+
+void OpenGL$RectGLPicture::draw(jint dx, jint dy, jint cx1, jint cy1, jint cx2, jint cy2) {
+ cx1 = max(dx, cx1);
+ cy1 = max(dy, cy1);
+ cx2 = min(cx2, dx + width);
+ cy2 = min(cy2, dy + height);
+ if (cy2 <= cy1 || cx2 <= cx1) return;
+ glEnable(GL_TEXTURE_RECTANGLE_EXT);
+ glBindTexture(GL_TEXTURE_RECTANGLE_EXT, textureName);
+ glBegin(GL_QUADS); {
+ glTexCoord2i (cx1 - dx, cy1 - dy );
+ glVertex3i (cx1, cy1, 0);
+ glTexCoord2i (cx2 - dx, cy1 - dy );
+ glVertex3i (cx2, cy1, 0);
+ glTexCoord2i (cx2 - dx, cy2 - dy );
+ glVertex3i (cx2, cy2, 0);
+ glTexCoord2i (cx1 - dx, cy2 - dy );
+ glVertex3i (cx1, cy2, 0);
+ } glEnd();
+ glDisable(GL_TEXTURE_RECTANGLE_EXT);
+ checkGLError();
+}
+
+void OpenGL::natDeleteTexture(jint tex_) {
+ activateSharedContext();
+ GLuint tex = (GLuint) tex_;
+ glDeleteTextures(1,&tex);
+}
+
+void OpenGL$SquareGLPicture::natInit(Object *data_, jboolean alphaOnly) {
+ unsigned char *buf;
+ int row,col,p;
+ GLuint tex;
+
+ if(alphaOnly) {
+ jbyte *data = elements((JArray<jbyte>*) data_);
+ if(texWidth == width && texHeight == height) {
+ buf = (unsigned char*) data;
+ } else {
+ buf = new unsigned char[texWidth*texHeight];
+ p=0;
+ for(row=0;row<height;row++) {
+ for(col=0;col<width;col++)
+ buf[p++] = data[row*width+col];
+ for(;col<texWidth;col++)
+ buf[p++] = 0;
+ }
+ for(;row<texHeight;row++)
+ for(col=0;col<texWidth;col++)
+ buf[p++] = 0;
+ }
+ } else {
+ jint *data = elements((JArray<jint>*) data_);
+ buf = new unsigned char[texWidth*texHeight*4];
+ p=0;
+ for(row=0;row<height;row++) {
+ for(col=0;col<width;col++) {
+ jint pixel = data[row*width+col];
+ buf[p+0] = (pixel >> 16) & 0xff;
+ buf[p+1] = (pixel >> 8) & 0xff;
+ buf[p+2] = (pixel >> 0) & 0xff;
+ buf[p+3] = (pixel >> 24) & 0xff;
+ p+=4;
+ }
+ for(;col < texWidth;col++,p+=4)
+ buf[p+0] = buf[p+1] = buf[p+2] = buf[p+3] = 0;
+ }
+ for(;row < texHeight;row++)
+ for(col=0;col<texWidth;col++,p+=4)
+ buf[p+0] = buf[p+1] = buf[p+2] = buf[p+3] = 0;
+ }
+
+ gl->activateSharedContext();
+ glEnable(GL_TEXTURE_2D);
+ glGenTextures(1,&tex);
+ glBindTexture(GL_TEXTURE_2D,tex);
+ glPixelStorei(GL_PACK_ALIGNMENT,1);
+ glTexImage2D(GL_TEXTURE_2D,0,alphaOnly ? GL_ALPHA : GL_RGBA,texWidth,texHeight,0,alphaOnly ? GL_ALPHA : GL_RGBA,GL_UNSIGNED_BYTE,buf);
+ checkGLError();
+ if(!alphaOnly || width != texWidth || height != texHeight) delete buf;
+
+ if(gl->glVersion >= 1.2) {
+ glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
+ glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+ glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+ } else {
+ glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
+ }
+
+ glDisable(GL_TEXTURE_2D);
+ checkGLError();
+
+ textureName = (jint)tex;
+}
+
+void OpenGL$SquareGLPicture::draw(jint dx, jint dy, jint cx1, jint cy1, jint cx2, jint cy2) {
+ cx1 = max(dx, cx1);
+ cy1 = max(dy, cy1);
+ cx2 = min(cx2, dx + width);
+ cy2 = min(cy2, dy + height);
+ if (cy2 <= cy1 || cx2 <= cx1) return;
+ float tx1 = (float) (cx1 - dx) / (float) texWidth;
+ float ty1 = (float) (cy1 - dy) / (float) texHeight;
+ float tx2 = (float) (cx2 - dx) / (float) texWidth;
+ float ty2 = (float) (cy2 - dy) / (float) texHeight;
+ glEnable(GL_TEXTURE_2D);
+ glBindTexture(GL_TEXTURE_2D, textureName);
+ checkGLError();
+ glBegin(GL_QUADS); {
+ glTexCoord2f (tx1, ty1 );
+ glVertex3i (cx1, cy1, 0);
+ glTexCoord2f (tx2, ty1 );
+ glVertex3i (cx2, cy1, 0);
+ glTexCoord2f (tx2, ty2 );
+ glVertex3i (cx2, cy2, 0);
+ glTexCoord2f (tx1, ty2 );
+ glVertex3i (cx1, cy2, 0);
+ } glEnd();
+ glDisable(GL_TEXTURE_2D);
+ checkGLError();
+}
+
+} } } // end org::ibex::plat
projects / org.ibex.core.git / blobdiff