+++ /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/xwt/plat/OpenGL.h>
-#include <org/xwt/plat/OpenGL$GLPixelBuffer.h>
-#include <org/xwt/plat/OpenGL$GLPicture.h>
-#include <org/xwt/plat/OpenGL$RectGLPicture.h>
-#include <org/xwt/plat/OpenGL$SquareGLPicture.h>
-#include <org/xwt/plat/OpenGL$MosaicGLPicture.h>
-
-#include <java/lang/Error.h>
-
-#ifdef __APPLE__
-#include <OpenGL/gl.h>
-#include <OpenGL/glu.h>
-#include <OpenGL/glext.h>
-#else
-#warning I am not sure if these are correct
-#include <gl/gl.h>
-#include <gl/glu.h>
-#include <gl/glext.h>
-#endif
-
-#include <stdio.h>
-
-#define min(a,b) ((a)<(b)?(a):(b))
-#define max(a,b) ((a)>(b)?(a):(b))
-
-namespace org { namespace xwt { namespace plat {
-
-#define checkGLError() checkGLError2(__FILE__,__LINE__)
-static void checkGLError2(const char *file,int line) {
- GLenum err = glGetError();
- if(err == GL_NO_ERROR) return;
-
- fprintf(stderr,"%s:%d: GL Error: %s",file,line,(char *) gluErrorString(err));
- exit(EXIT_FAILURE);
-}
-
-void OpenGL::natInit() {
- GLint i;
- const GLubyte *s;
- activateSharedContext();
- s = glGetString(GL_EXTENSIONS);
- rectangularTextures = (jboolean) gluCheckExtension((GLubyte*)"GL_EXT_texture_rectangle",s);
- glGetIntegerv(GL_MAX_TEXTURE_SIZE,&i);
- maxTexSize = (jint) i;
- if(rectangularTextures) {
- glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE_EXT,&i);
- maxRectTexSize = (jint) i;
- }
- s = glGetString(GL_VENDOR);
- vendor = JvNewStringLatin1(s==0 ? "" : (char*)s);
- s = glGetString(GL_RENDERER);
- renderer = JvNewStringLatin1(s==0 ? "" : (char*)s);
- s = glGetString(GL_VERSION);
- version = JvNewStringLatin1(s==0 ? "" : (char*)s);
-}
-
-void OpenGL$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::xwt::plat
projects / org.ibex.core.git / blobdiff