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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/**
* @file src/gwin/gwin_gl3d.c
* @brief GWIN sub-system button code
*/
#include "../../gfx.h"
#if GFX_USE_GWIN && GWIN_NEED_GL3D
#if GDISP_PIXELFORMAT != GDISP_PIXELFORMAT_RGB565
#error "GWIN: GL3D only support GDISP_PIXELFORMAT_RGB565 color format (TinyGL limitation)"
#endif
#include "gwin_class.h"
#include "../../3rdparty/tinygl-0.4-ugfx/src/zgl.h"
// Forward definitions
static void gl3dDestroy(GWindowObject *gh);
static void gl3dRedraw(GWindowObject *gh);
static int gl3dResizeGLViewport(GLContext *c, int *xsize_ptr, int *ysize_ptr);
static const gwinVMT gl3dVMT = {
"GL3D", // The classname
sizeof(GGL3DObject), // The object size
gl3dDestroy, // The destroy routine
gl3dRedraw, // The redraw routine
0, // The after-clear routine
};
static gBool haveGLwindow = gFalse;
GHandle gwinGGL3DCreate(GDisplay *g, GGL3DObject *gl, const GWindowInit *pInit) {
ZBuffer * zb;
GLContext * glcxt;
// Only one GL3D window allowed at a time (TinyGL limitation)
if (haveGLwindow)
return 0;
if (!(gl = (GGL3DObject *)_gwindowCreate(g, &gl->g, pInit, &gl3dVMT, 0)))
return 0;
// Must be a multiple of 4 bytes
gl->g.width &= ~3;
gl->g.height &= ~3;
zb = ZB_open(gl->g.width, gl->g.height, ZB_MODE_5R6G5B, 0, NULL, NULL, NULL);
if (!zb) {
if ((gl->g.flags & GWIN_FLG_DYNAMIC))
gfxFree(gl);
return 0;
}
/* initialisation of the TinyGL interpreter */
glInit(zb);
gl->glcxt = glcxt = gl_get_context();
glcxt->opaque = gl;
glcxt->gl_resize_viewport = gl3dResizeGLViewport;
/* set the viewport : we force a call to the viewport resize routine */
glcxt->viewport.xsize=-1;
glcxt->viewport.ysize=-1;
glViewport(0, 0, gl->g.width, gl->g.height);
haveGLwindow = gTrue;
gwinSetVisible((GHandle)gl, pInit->show);
return (GHandle)gl;
}
static void gl3dDestroy(GWindowObject *gh) {
(void) gh;
glClose();
haveGLwindow = gFalse;
}
static void gl3dRedraw(GWindowObject *gh) {
ZBuffer * zb;
zb = ((GGL3DObject *)gh)->glcxt->zb;
gdispGBlitArea(gh->display, gh->x, gh->y, zb->xsize, zb->ysize, 0, 0, zb->linesize/sizeof(color_t), (const gPixel *)zb->pbuf);
}
static int gl3dResizeGLViewport(GLContext *c, int *xsize_ptr, int *ysize_ptr) {
int cx, cy;
cx = *xsize_ptr;
cy = *ysize_ptr;
// We ensure that cx and cy are multiples of 4 for the zbuffer. TODO: find a better solution
cx &= ~3;
cy &= ~3;
if (cx <= 0 || cy <= 0)
return -1;
*xsize_ptr = cx;
*ysize_ptr = cy;
// Resize the GWIN???
// Resize the Z buffer
ZB_resize(c->zb, NULL, cx, cy);
return 0;
}
/**
* TinyGL support routines
*/
#include <string.h>
#define NO_CLIBRARY
void tgl_warning(const char *format, ...) { (void)format; }
void tgl_trace(const char *format, ...) { (void)format; }
void tgl_fixme(const char *format, ...) { (void)format; }
void gl_fatal_error(char *format, ...) { gfxHalt(format); }
void gl_assert(int test) { if (!test) gfxHalt("TinyGL Assert"); }
void gl_free(void *p) { gfxFree(p); }
void *gl_malloc(int size) { return gfxAlloc(size); }
void *gl_zalloc(int size) {
void *p;
p = gfxAlloc(size);
if (p)
memset(p, 0, size);
return p;
}
/**
* Pre-load TinyGL headers
*/
/**
* TinyGL wrapper code
*/
#include "../../3rdparty/tinygl-0.4-ugfx/src/api.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/list.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/vertex.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/init.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/matrix.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/texture.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/misc.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/clear.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/light.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/clip.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/select.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/get.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/zbuffer.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/zline.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/zdither.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/ztriangle.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/zmath.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/image_util.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/arrays.c"
#include "../../3rdparty/tinygl-0.4-ugfx/src/specbuf.c"
#endif /* GFX_USE_GWIN && GWIN_NEED_GL3D */
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