switch build system to Tup

git-svn-id: svn://kolibrios.org@5098 a494cfbc-eb01-0410-851d-a64ba20cac60
2014-09-12 15:15:23 +00:00
parent 94776ec237
commit cd74d1af33
830 changed files with 17926 additions and 4404 deletions
@@ -0,0 +1,127 @@
+/* simple gl like driver for TinyGL and KolibriOS - porting iadn */
+#include <GL/gl.h>
+#include "kosgl.h"
+#include "zgl.h"
+
+
+
+typedef struct {
+    GLContext *gl_context;
+    int xsize,ysize;
+    int dx,dy;
+    int x,y;
+} TinyGLContext;
+
+
+KOSGLContext kosglCreateContext(KOSGLContext shareList, int flags)
+{
+  TinyGLContext *ctx;
+
+  if (shareList != NULL) {
+    gl_fatal_error("No sharing available in TinyGL");    
+  }
+
+    ctx=gl_malloc(sizeof(TinyGLContext));
+  if (!ctx)
+      return NULL;
+  ctx->gl_context=NULL;
+  return (KOSGLContext) ctx;
+}
+
+void kosglDestroyContext( KOSGLContext ctx1 )
+{
+  TinyGLContext *ctx = (TinyGLContext *) ctx1;
+  if (ctx->gl_context != NULL) {
+    glClose();
+  }
+  gl_free(ctx);
+}
+
+/* resize the glx viewport : we try to use the xsize and ysize
+   given. We return the effective size which is guaranted to be smaller */
+
+static int gl_resize_viewport(GLContext *c,int *xsize_ptr,int *ysize_ptr)
+{
+  TinyGLContext *ctx;
+  int xsize,ysize;
+   
+  ctx=(TinyGLContext *)c->opaque;
+
+  xsize=*xsize_ptr;
+  ysize=*ysize_ptr;
+
+  /* we ensure that xsize and ysize are multiples of 2 for the zbuffer. 
+     TODO: find a better solution */
+  xsize&=~3;
+  ysize&=~3;
+
+  if (xsize == 0 || ysize == 0) return -1;
+
+  *xsize_ptr=xsize-1;
+  *ysize_ptr=ysize-1;
+  ctx->dx = xsize;
+  ctx->dy = ysize;
+ 
+  ctx->xsize=xsize;
+  ctx->ysize=ysize;  
+    
+  /* resize the Z buffer */
+  ZB_resize(c->zb,NULL,xsize,ysize);
+  return 0;
+}
+
+/* we assume here that drawable is a window */
+int kosglMakeCurrent( int win_x0, int win_y0,int win_x, int win_y, KOSGLContext ctx1)
+{ 	
+  TinyGLContext *ctx = (TinyGLContext *) ctx1;
+  int mode;
+  ZBuffer *zb;
+ 
+  if (ctx->gl_context == NULL) {
+      /* create the TinyGL context */
+      ctx->x = win_x0;
+	  ctx->y = win_y0;
+	  ctx->dx = win_x;
+	  ctx->dy = win_y;
+
+      /* currently, we only support 16 bit rendering */
+      mode = ZB_MODE_RGB24;
+      zb=ZB_open(win_x,win_y,mode,0,NULL,NULL,NULL);      
+    
+      if (zb == NULL) {
+          fprintf(stderr, "Error while initializing Z buffer\n");
+          exit(1);
+      }
+      
+      /* initialisation of the TinyGL interpreter */
+      glInit(zb); 
+
+      ctx->gl_context=gl_get_context();
+      
+      ctx->gl_context->opaque=(void *) ctx;
+      ctx->gl_context->gl_resize_viewport=gl_resize_viewport;
+
+      /* set the viewport : we force a call to gl_resize_viewport */
+      ctx->gl_context->viewport.xsize=-1;
+      ctx->gl_context->viewport.ysize=-1;
+      
+      glViewport(0, 0, win_x, win_y);
+    
+  }  
+  return 1;
+}
+
+void kosglSwapBuffers( )
+{
+    GLContext *gl_context;
+    TinyGLContext *ctx;
+     
+    /* retrieve the current TinyGLContext */
+    gl_context=gl_get_context();
+    ctx=(TinyGLContext *)gl_context->opaque;
+
+	__asm__ __volatile__("int $0x40"::"a"(7),
+                                      "b"((char *)gl_context->zb->pbuf),
+								      "c"((ctx->dx<<16)|ctx->dy),
+									  "d"((ctx->x<<16)|ctx->y));
+}