progs/egl: Replace egltri by xegl_tri.

With the switch to eglut, xegl_tri supports both X11 and
EGL_MESA_screen_surface.  Have it replace egltri.

1 files changed, 87 insertions, 210 deletions

diff --git a/progs/egl/opengl/egltri.c b/progs/egl/opengl/egltri.c
index 006e06eb03e..fb1dde3529c 100644
--- a/progs/egl/opengl/egltri.c
+++ b/progs/egl/opengl/egltri.c
@@ -1,18 +1,16 @@
 /*
- * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
  * Copyright (C) 2008  Brian Paul   All Rights Reserved.
- * Copyright (C) 2008  Jakob Bornecrantz   All Rights Reserved.
- *
+ * 
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
- *
+ * 
  * The above copyright notice and this permission notice shall be included
  * in all copies or substantial portions of the Software.
- *
+ * 
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
@@ -22,243 +20,122 @@
  */
 
 /*
- * This program is based on eglgears and xegl_tri.
- * Remixed by Jakob Bornecrantz
- *
- * No command line options.
- * Program runs for 5 seconds then exits, outputing framerate to console
+ * Draw a triangle with X/EGL.
+ * Brian Paul
+ * 3 June 2008
  */
 
-#define EGL_EGLEXT_PROTOTYPES
 
-#include <assert.h>
 #include <math.h>
 #include <stdlib.h>
-#include <stdio.h>
 #include <string.h>
 #include <GL/gl.h>
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
 
-#define MAX_CONFIGS 10
-#define MAX_MODES 100
+#include "eglut.h"
 
 
-/* XXX this probably isn't very portable */
+static GLfloat view_rotx = 0.0, view_roty = 0.0, view_rotz = 0.0;
 
-#include <sys/time.h>
-#include <unistd.h>
 
-/* return current time (in seconds) */
-static double
-current_time(void)
+static void
+draw(void)
 {
-   struct timeval tv;
-#ifdef __VMS
-   (void) gettimeofday(&tv, NULL );
-#else
-   struct timezone tz;
-   (void) gettimeofday(&tv, &tz);
-#endif
-   return (double) tv.tv_sec + tv.tv_usec / 1000000.0;
+   static const GLfloat verts[3][2] = {
+      { -1, -1 },
+      {  1, -1 },
+      {  0,  1 }
+   };
+   static const GLfloat colors[3][3] = {
+      { 1, 0, 0 },
+      { 0, 1, 0 },
+      { 0, 0, 1 }
+   };
+
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   glPushMatrix();
+   glRotatef(view_rotx, 1, 0, 0);
+   glRotatef(view_roty, 0, 1, 0);
+   glRotatef(view_rotz, 0, 0, 1);
+
+   {
+      glVertexPointer(2, GL_FLOAT, 0, verts);
+      glColorPointer(3, GL_FLOAT, 0, colors);
+      glEnableClientState(GL_VERTEX_ARRAY);
+      glEnableClientState(GL_COLOR_ARRAY);
+
+      glDrawArrays(GL_TRIANGLES, 0, 3);
+
+      glDisableClientState(GL_VERTEX_ARRAY);
+      glDisableClientState(GL_COLOR_ARRAY);
+   }
+
+   glPopMatrix();
 }
 
 
-static GLfloat view_rotx = 0.0, view_roty = 0.0, view_rotz = 0.0;
-
-static void draw()
+/* new window size or exposure */
+static void
+reshape(int width, int height)
 {
-	static const GLfloat verts[3][2] = {
-		{ -1, -1 },
-		{  1, -1 },
-		{  0,  1 }
-	};
-	static const GLfloat colors[3][3] = {
-		{ 1, 0, 0 },
-		{ 0, 1, 0 },
-		{ 0, 0, 1 }
-	};
-
-	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+   GLfloat ar = (GLfloat) width / (GLfloat) height;
 
-	glPushMatrix();
-	glRotatef(view_rotx, 1, 0, 0);
-	glRotatef(view_roty, 0, 1, 0);
-	glRotatef(view_rotz, 0, 0, 1);
+   glViewport(0, 0, (GLint) width, (GLint) height);
 
-	{
-		glVertexPointer(2, GL_FLOAT, 0, verts);
-		glColorPointer(3, GL_FLOAT, 0, colors);
-		glEnableClientState(GL_VERTEX_ARRAY);
-		glEnableClientState(GL_COLOR_ARRAY);
-
-		glDrawArrays(GL_TRIANGLES, 0, 3);
-
-		glDisableClientState(GL_VERTEX_ARRAY);
-		glDisableClientState(GL_COLOR_ARRAY);
-	}
-
-	glPopMatrix();
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glFrustum(-ar, ar, -1, 1, 5.0, 60.0);
+   
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glTranslatef(0.0, 0.0, -10.0);
 }
 
-static void init()
-{
-	glClearColor(0.4, 0.4, 0.4, 0.0);
-}
 
-/* new window size or exposure */
-static void reshape(int width, int height)
+static void
+init(void)
 {
-	GLfloat ar = (GLfloat) width / (GLfloat) height;
-
-	glViewport(0, 0, (GLint) width, (GLint) height);
-
-	glMatrixMode(GL_PROJECTION);
-	glLoadIdentity();
-	glFrustum(-ar, ar, -1, 1, 5.0, 60.0);
-
-	glMatrixMode(GL_MODELVIEW);
-	glLoadIdentity();
-	glTranslatef(0.0, 0.0, -10.0);
+   glClearColor(0.4, 0.4, 0.4, 0.0);
 }
 
-static void run(EGLDisplay dpy, EGLSurface surf, int ttr)
-{
-	double st = current_time();
-	double ct = st;
-	int frames = 0;
-	GLfloat seconds, fps;
-
-	while (ct - st < ttr)
-	{
-		ct = current_time();
-
-		draw();
 
-		eglSwapBuffers(dpy, surf);
-
-		frames++;
-	}
-
-	seconds = ct - st;
-	fps = frames / seconds;
-	printf("%d frames in %3.1f seconds = %6.3f FPS\n", frames, seconds, fps);
+static void
+special_key(int special)
+{
+   switch (special) {
+   case EGLUT_KEY_LEFT:
+      view_roty += 5.0;
+      break;
+   case EGLUT_KEY_RIGHT:
+      view_roty -= 5.0;
+      break;
+   case EGLUT_KEY_UP:
+      view_rotx += 5.0;
+      break;
+   case EGLUT_KEY_DOWN:
+      view_rotx -= 5.0;
+      break;
+   default:
+      break;
+   }
 }
 
-int main(int argc, char *argv[])
+int
+main(int argc, char *argv[])
 {
-	int maj, min;
-	EGLContext ctx;
-	EGLSurface screen_surf;
-	EGLConfig configs[MAX_CONFIGS];
-	EGLint numConfigs, i;
-	EGLBoolean b;
-	EGLDisplay d;
-	EGLint screenAttribs[10];
-	EGLModeMESA mode[MAX_MODES];
-	EGLScreenMESA screen;
-	EGLint count, chosenMode = 0;
-	GLboolean printInfo = GL_FALSE;
-	EGLint width = 0, height = 0;
-
-	/* parse cmd line args */
-	for (i = 1; i < argc; i++)
-	{
-		if (strcmp(argv[i], "-info") == 0)
-		{
-			printInfo = GL_TRUE;
-		}
-		else
-			printf("Warning: unknown parameter: %s\n", argv[i]);
-	}
-
-	/* DBR : Create EGL context/surface etc */
-	d = eglGetDisplay(EGL_DEFAULT_DISPLAY);
-	assert(d);
-
-	if (!eglInitialize(d, &maj, &min)) {
-		printf("egltri: eglInitialize failed\n");
-		exit(1);
-	}
-
-	printf("egltri: EGL version = %d.%d\n", maj, min);
-	printf("egltri: EGL_VENDOR = %s\n", eglQueryString(d, EGL_VENDOR));
-
-	/* XXX use ChooseConfig */
-	eglGetConfigs(d, configs, MAX_CONFIGS, &numConfigs);
-	eglGetScreensMESA(d, &screen, 1, &count);
-
-	if (!eglGetModesMESA(d, screen, mode, MAX_MODES, &count) || count == 0) {
-		printf("egltri: eglGetModesMESA failed!\n");
-		return 0;
-	}
-
-	/* Print list of modes, and find the one to use */
-	printf("egltri: Found %d modes:\n", count);
-	for (i = 0; i < count; i++) {
-		EGLint w, h;
-		eglGetModeAttribMESA(d, mode[i], EGL_WIDTH, &w);
-		eglGetModeAttribMESA(d, mode[i], EGL_HEIGHT, &h);
-		printf("%3d: %d x %d\n", i, w, h);
-		if (w > width && h > height) {
-			width = w;
-			height = h;
-			chosenMode = i;
-		}
-	}
-	printf("egltri: Using screen mode/size %d: %d x %d\n", chosenMode, width, height);
-
-	eglBindAPI(EGL_OPENGL_API);
-	ctx = eglCreateContext(d, configs[0], EGL_NO_CONTEXT, NULL);
-	if (ctx == EGL_NO_CONTEXT) {
-		printf("egltri: failed to create context\n");
-		return 0;
-	}
-
-	/* build up screenAttribs array */
-	i = 0;
-	screenAttribs[i++] = EGL_WIDTH;
-	screenAttribs[i++] = width;
-	screenAttribs[i++] = EGL_HEIGHT;
-	screenAttribs[i++] = height;
-	screenAttribs[i++] = EGL_NONE;
-
-	screen_surf = eglCreateScreenSurfaceMESA(d, configs[0], screenAttribs);
-	if (screen_surf == EGL_NO_SURFACE) {
-		printf("egltri: failed to create screen surface\n");
-		return 0;
-	}
-
-	b = eglShowScreenSurfaceMESA(d, screen, screen_surf, mode[chosenMode]);
-	if (!b) {
-		printf("egltri: show surface failed\n");
-		return 0;
-	}
-
-	b = eglMakeCurrent(d, screen_surf, screen_surf, ctx);
-	if (!b) {
-		printf("egltri: make current failed\n");
-		return 0;
-	}
-
-	if (printInfo)
-	{
-		printf("GL_RENDERER   = %s\n", (char *) glGetString(GL_RENDERER));
-		printf("GL_VERSION    = %s\n", (char *) glGetString(GL_VERSION));
-		printf("GL_VENDOR     = %s\n", (char *) glGetString(GL_VENDOR));
-		printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
-	}
+   eglutInitWindowSize(300, 300);
+   eglutInitAPIMask(EGLUT_OPENGL_BIT);
+   eglutInit(argc, argv);
 
-	init();
-	reshape(width, height);
+   eglutCreateWindow("egltri");
 
-	glDrawBuffer( GL_BACK );
+   eglutReshapeFunc(reshape);
+   eglutDisplayFunc(draw);
+   eglutSpecialFunc(special_key);
 
-	run(d, screen_surf, 5.0);
+   init();
 
-	eglDestroySurface(d, screen_surf);
-	eglDestroyContext(d, ctx);
-	eglTerminate(d);
+   eglutMainLoop();
 
-	return 0;
+   return 0;
 }