1 files changed, 217 insertions, 0 deletions
diff --git a/progs/egl/opengles1/drawtex.c b/progs/egl/opengles1/drawtex.c
new file mode 100644
index 00000000000..e9ac0153408
--- /dev/null
+++ b/progs/egl/opengles1/drawtex.c
@@ -0,0 +1,217 @@
+/*
+ * Copyright (C) 2008  Tunsgten Graphics,Inc.   All Rights Reserved.
+ */
+
+/*
+ * Test GL_OES_draw_texture
+ * Brian Paul
+ * August 2008
+ */
+
+#define GL_GLEXT_PROTOTYPES
+
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+
+#include "eglut.h"
+
+
+static GLfloat view_posx = 10.0, view_posy = 20.0;
+static GLfloat width = 200, height = 200;
+static GLboolean animate = GL_FALSE;
+static int win;
+
+
+static void
+draw(void)
+{
+   glClear(GL_COLOR_BUFFER_BIT);
+
+   glDrawTexfOES(view_posx, view_posy, 0.0, width, height);
+}
+
+
+/* new window size or exposure */
+static void
+reshape(int width, int height)
+{
+   GLfloat ar = (GLfloat) width / (GLfloat) height;
+
+   glViewport(0, 0, (GLint) width, (GLint) height);
+
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+
+#ifdef GL_VERSION_ES_CM_1_0
+   glFrustumf(-ar, ar, -1, 1, 5.0, 60.0);
+#else
+   glFrustum(-ar, ar, -1, 1, 5.0, 60.0);
+#endif
+   
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glTranslatef(0.0, 0.0, -15.0);
+}
+
+
+static float
+dist(GLuint i, GLuint j, float x, float y)
+{
+   return sqrt((i-x) * (i-x) + (j-y) * (j-y));
+}
+
+static void
+make_smile_texture(void)
+{
+#define SZ 128
+   GLenum Filter = GL_LINEAR;
+   GLubyte image[SZ][SZ][4];
+   GLuint i, j;
+   GLint cropRect[4];
+
+   for (i = 0; i < SZ; i++) {
+      for (j = 0; j < SZ; j++) {
+         GLfloat d_mouth = dist(i, j, SZ/2, SZ/2);
+         GLfloat d_rt_eye = dist(i, j, SZ*3/4, SZ*3/4);
+         GLfloat d_lt_eye = dist(i, j, SZ*3/4, SZ*1/4);
+         if (d_rt_eye < SZ / 8 || d_lt_eye < SZ / 8) {
+            image[i][j][0] = 20;
+            image[i][j][1] = 50;
+            image[i][j][2] = 255;
+            image[i][j][3] = 255;
+         }
+         else if (i < SZ/2 && d_mouth < SZ/3) {
+            image[i][j][0] = 255;
+            image[i][j][1] = 20;
+            image[i][j][2] = 20;
+            image[i][j][3] = 255;
+         }
+         else {
+            image[i][j][0] = 200;
+            image[i][j][1] = 200;
+            image[i][j][2] = 200;
+            image[i][j][3] = 255;
+         }
+      }
+   }
+
+   glActiveTexture(GL_TEXTURE0); /* unit 0 */
+   glBindTexture(GL_TEXTURE_2D, 42);
+   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, SZ, SZ, 0,
+                GL_RGBA, GL_UNSIGNED_BYTE, image);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, Filter);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, Filter);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+   cropRect[0] = 0;
+   cropRect[1] = 0;
+   cropRect[2] = SZ;
+   cropRect[3] = SZ;
+   glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, cropRect);
+#undef SZ
+}
+
+
+
+static void
+init(void)
+{
+   const char *ext = (char *) glGetString(GL_EXTENSIONS);
+
+   if (!strstr(ext, "GL_OES_draw_texture")) {
+      fprintf(stderr, "Sorry, this program requires GL_OES_draw_texture");
+      exit(1);
+   }
+
+   glClearColor(0.4, 0.4, 0.4, 0.0);
+
+   make_smile_texture();
+   glEnable(GL_TEXTURE_2D);
+}
+
+
+static void
+idle(void)
+{
+   if (animate) {
+      view_posx += 1.0;
+      view_posy += 2.0;
+      eglutPostRedisplay();
+   }
+}
+
+static void
+key(unsigned char key)
+{
+   switch (key) {
+   case ' ':
+      animate = !animate;
+      break;
+   case 'w':
+      width -= 1.0f;
+      break;
+   case 'W':
+      width += 1.0f;
+      break;
+   case 'h':
+      height -= 1.0f;
+      break;
+   case 'H':
+      height += 1.0f;
+      break;
+   case 27:
+      eglutDestroyWindow(win);
+      exit(0);
+      break;
+   default:
+      break;
+   }
+}
+
+static void
+special_key(int key)
+{
+   switch (key) {
+   case EGLUT_KEY_LEFT:
+      view_posx -= 1.0;
+      break;
+   case EGLUT_KEY_RIGHT:
+      view_posx += 1.0;
+      break;
+   case EGLUT_KEY_UP:
+      view_posy += 1.0;
+      break;
+   case EGLUT_KEY_DOWN:
+      view_posy -= 1.0;
+      break;
+   default:
+      break;
+   }
+}
+
+int
+main(int argc, char *argv[])
+{
+   eglutInitWindowSize(400, 300);
+   eglutInitAPIMask(EGLUT_OPENGL_ES1_BIT);
+   eglutInit(argc, argv);
+
+   win = eglutCreateWindow("drawtex");
+
+   eglutIdleFunc(idle);
+   eglutReshapeFunc(reshape);
+   eglutDisplayFunc(draw);
+   eglutKeyboardFunc(key);
+   eglutSpecialFunc(special_key);
+
+   init();
+
+   eglutMainLoop();
+
+   return 0;
+}