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#include <GL/oscontext.h>
#include "zbuffer.h"
#include "zgl.h"
#include <GL/gl.h>
#include <stdlib.h>
static int buffercnt = 0;
ostgl_context *
ostgl_create_context(const int xsize,
const int ysize,
const int depth,
void **framebuffers,
const int numbuffers)
{
ostgl_context *context;
int i;
ZBuffer *zb;
gl_assert(depth == 16); /* support for other depths must include bpp
convertion */
gl_assert(numbuffers >= 1);
context = gl_malloc(sizeof(ostgl_context));
gl_assert(context);
context->zbs = gl_malloc(sizeof(void*)*numbuffers);
context->framebuffers = gl_malloc(sizeof(void*)*numbuffers);
gl_assert(context->zbs != NULL && context->framebuffers != NULL);
for (i = 0; i < numbuffers; i++) {
context->framebuffers[i] = framebuffers[i];
zb = ZB_open(xsize, ysize, ZB_MODE_5R6G5B, 0, NULL, NULL, framebuffers[i]);
if (zb == NULL) {
fprintf(stderr, "Error while initializing Z buffer\n");
exit(1);
}
context->zbs[i] = zb;
}
if (++buffercnt == 1) {
glInit(context->zbs[0]);
}
context->xsize = xsize;
context->ysize = ysize;
context->numbuffers = numbuffers;
return context;
}
void
ostgl_delete_context(ostgl_context *context)
{
int i;
for (i = 0; i < context->numbuffers; i++) {
ZB_close(context->zbs[i]);
}
gl_free(context->zbs);
gl_free(context->framebuffers);
gl_free(context);
if (--buffercnt == 0) {
glClose();
}
}
void
ostgl_make_current(ostgl_context *oscontext, const int idx)
{
GLContext *context = gl_get_context();
gl_assert(idx < oscontext->numbuffers);
context->zb = oscontext->zbs[idx];
}
void
ostgl_resize(ostgl_context *context,
const int xsize,
const int ysize,
void **framebuffers)
{
int i;
for (i = 0; i < context->numbuffers; i++) {
ZB_resize(context->zbs[i], framebuffers[i], xsize, ysize);
}
}
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