161 lines
4.0 KiB
C
161 lines
4.0 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#define EGL_EGLEXT_PROTOTYPES
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#include "EGL/egl.h"
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#include "EGL/eglext.h"
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#include "GL/gl.h"
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#include "gbm.h"
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#include <kos32sys.h>
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#include <pixlib2.h>
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int main()
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{
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struct gbm_device *gbm;
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struct gbm_surface *gs;
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EGLDisplay dpy;
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EGLint major, minor;
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EGLContext context;
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EGLSurface surface;
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EGLConfig config;
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EGLint config_attribs[32];
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EGLint num_configs, i;
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GLint list;
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int fd;
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fd = get_service("DISPLAY");
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gbm = gbm_create_device(fd);
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if( gbm == NULL){
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printf("failed to initialize GBM device");
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return 1;
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};
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dpy = eglGetDisplay((EGLNativeDisplayType)gbm);
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if (!eglInitialize(dpy, &major, &minor))
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printf("failed to initialize EGL display");
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printf("EGL_VERSION = %s\n", eglQueryString(dpy, EGL_VERSION));
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printf("EGL_VENDOR = %s\n", eglQueryString(dpy, EGL_VENDOR));
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printf("EGL_EXTENSIONS = %s\n", eglQueryString(dpy, EGL_EXTENSIONS));
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printf("EGL_CLIENT_APIS = %s\n",eglQueryString(dpy, EGL_CLIENT_APIS));
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i = 0;
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config_attribs[i++] = EGL_RED_SIZE;
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config_attribs[i++] = 1;
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config_attribs[i++] = EGL_GREEN_SIZE;
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config_attribs[i++] = 1;
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config_attribs[i++] = EGL_BLUE_SIZE;
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config_attribs[i++] = 1;
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config_attribs[i++] = EGL_DEPTH_SIZE;
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config_attribs[i++] = 1;
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config_attribs[i++] = EGL_SURFACE_TYPE;
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config_attribs[i++] = EGL_WINDOW_BIT;
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config_attribs[i++] = EGL_RENDERABLE_TYPE;
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config_attribs[i++] = EGL_OPENGL_BIT;
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config_attribs[i] = EGL_NONE;
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if (!eglChooseConfig(dpy,config_attribs, &config, 1, &num_configs) || !num_configs)
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printf("failed to choose a config");
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eglBindAPI(EGL_OPENGL_API);
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context = eglCreateContext(dpy, config, EGL_NO_CONTEXT, NULL);
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if (!context)
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printf("failed to create context");
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gs = gbm_surface_create(gbm, 400, 300, GBM_BO_FORMAT_ARGB8888, GBM_BO_USE_RENDERING);
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BeginDraw();
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DrawWindow(20, 20, 400+9, 300+24, "gl-render", 0x000000, 0x74);
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EndDraw();
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surface = eglCreateWindowSurface(dpy,config, (EGLNativeWindowType)gs, NULL);
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if (surface == EGL_NO_SURFACE)
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printf("failed to create surface");
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if (!eglMakeCurrent(dpy, surface, surface, context))
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printf("failed to make window current");
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glClearColor( 0, 0, 0, 1);
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list = glGenLists(1);
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glNewList(list, GL_COMPILE);
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/* XXX: this state-change will only be executed if list is called
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* from outside a begin/end pair:
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*/
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glShadeModel( GL_FLAT );
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glBegin(GL_TRIANGLES);
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glColor3f(0,0,.7);
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glVertex3f( -0.9, 0.9, -30.0);
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glColor3f(0,.9,0);
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glVertex3f( -0.9, -0.9, -30.0);
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glColor3f(.8,0,0);
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glVertex3f( 0.9, 0.0, -30.0);
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glEnd();
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/* This statechange is potentially NOT redundant:
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*/
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glShadeModel( GL_FLAT );
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glBegin(GL_TRIANGLES);
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glColor3f(0,1,0);
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glVertex3f( -0.5, 0.5, -30.0);
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glColor3f(0,0,1);
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glVertex3f( -0.5, -0.5, -30.0);
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glColor3f(1,0,0);
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glVertex3f( 0.5, 0.0, -30.0);
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glEnd();
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glEndList();
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glDrawBuffer(GL_BACK);
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glViewport(0, 0, (GLint)400, (GLint)300);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
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glMatrixMode(GL_MODELVIEW);
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asm volatile ("int3");
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// glClear(GL_COLOR_BUFFER_BIT);
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glShadeModel( GL_SMOOTH );
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glBegin(GL_TRIANGLES);
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/* Note: call the list from inside a begin/end pair. The end is
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* provided by the display list...
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*/
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glCallList(list);
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glFlush();
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asm volatile ("int3");
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eglSwapBuffers(dpy, surface);
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glFinish();
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eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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eglDestroySurface(dpy, surface);
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gbm_surface_destroy(gs);
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eglDestroyContext(dpy, context);
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eglTerminate(dpy);
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while(1)
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{
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delay(1);
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}
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return 0;
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}
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