diff options
Diffstat (limited to 'progs/tests/quads.c')
-rw-r--r-- | progs/tests/quads.c | 262 |
1 files changed, 0 insertions, 262 deletions
diff --git a/progs/tests/quads.c b/progs/tests/quads.c deleted file mode 100644 index e5b9920b66d..00000000000 --- a/progs/tests/quads.c +++ /dev/null @@ -1,262 +0,0 @@ -/** - * Draw colored quads. - */ - - -#include <stdio.h> -#include <stdlib.h> -#include <math.h> -#include <GL/glew.h> -#include <GL/glut.h> - -#define NUM_QUADS 20 - - -static int Win; -static GLfloat Xrot = 40, Yrot = 0, Zrot = 0; -static GLboolean Anim = GL_TRUE; -static GLuint Vbuffer = 0; - -#if 1 -#else -static GLfloat buf[NUM_QUADS * 6 * 4]; -#endif - -static GLboolean doSwapBuffers = GL_TRUE; - -static GLint Frames = 0, T0 = 0; - - -static void -Idle(void) -{ - Xrot += 3.0; - Yrot += 4.0; - Zrot += 2.0; - glutPostRedisplay(); -} - - -static void -Draw(void) -{ - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - glPushMatrix(); - glRotatef(Xrot, 1, 0, 0); - glRotatef(Yrot, 0, 1, 0); - glRotatef(Zrot, 0, 0, 1); - - glDrawArrays(GL_QUADS, 0, NUM_QUADS*4); - - glPopMatrix(); - - if (doSwapBuffers) - glutSwapBuffers(); - /* - else - glFinish(); - */ - - { - GLint t = glutGet(GLUT_ELAPSED_TIME); - Frames++; - if (t - T0 >= 5000) { - GLfloat seconds = (t - T0) / 1000.0; - GLfloat fps = Frames / seconds; - printf("%d frames in %6.3f seconds = %6.3f FPS\n", - Frames, seconds, fps); - T0 = t; - Frames = 0; - } - } -} - - -static void -Reshape(int width, int height) -{ - glViewport(0, 0, width, height); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0); - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - glTranslatef(0.0, 0.0, -8.0); -} - - -static void -Key(unsigned char key, int x, int y) -{ - const GLfloat step = 3.0; - (void) x; - (void) y; - switch (key) { - case 's': - doSwapBuffers = !doSwapBuffers; - break; - case 'a': - Anim = !Anim; - if (Anim) - glutIdleFunc(Idle); - else - glutIdleFunc(NULL); - break; - case 'z': - Zrot -= step; - break; - case 'Z': - Zrot += step; - break; - case 27: - glutDestroyWindow(Win); - exit(0); - break; - } - glutPostRedisplay(); -} - - -static void -SpecialKey(int key, int x, int y) -{ - const GLfloat step = 3.0; - (void) x; - (void) y; - switch (key) { - case GLUT_KEY_UP: - Xrot -= step; - break; - case GLUT_KEY_DOWN: - Xrot += step; - break; - case GLUT_KEY_LEFT: - Yrot -= step; - break; - case GLUT_KEY_RIGHT: - Yrot += step; - break; - } - glutPostRedisplay(); -} - - -static void -quad(float x, float y, float z, float *v) -{ - int k = 0; - - /* color */ - v[k++] = x * 0.5 + 0.5; - v[k++] = y * 0.5 + 0.5; - v[k++] = z * 0.5 + 0.5; - /* vert */ - v[k++] = x; - v[k++] = y; - v[k++] = z; - - /* color */ - v[k++] = -x * 0.5 + 0.5; - v[k++] = -y * 0.5 + 0.5; - v[k++] = z * 0.5 + 0.5; - /* vert */ - v[k++] = -x; - v[k++] = -y; - v[k++] = z; - - /* color */ - v[k++] = -x * 0.5 + 0.5; - v[k++] = -y * 0.5 + 0.5; - v[k++] = -z * 0.5 + 0.5; - /* vert */ - v[k++] = -x; - v[k++] = -y; - v[k++] = -z; - - /* color */ - v[k++] = x * 0.5 + 0.5; - v[k++] = y * 0.5 + 0.5; - v[k++] = -z * 0.5 + 0.5; - /* vert */ - v[k++] = x; - v[k++] = y; - v[k++] = -z; -} - -static void -gen_quads(GLfloat *buf) -{ - float *v = buf; - float r = 1.0; - int i; - - for (i = 0; i < NUM_QUADS; i++) { - float angle = i / (float) NUM_QUADS * M_PI; - float x = r * cos(angle); - float y = r * sin(angle); - float z = 1.10; - quad(x, y, z, v); - v += 24; - } - - if (0) { - float *p = buf; - for (i = 0; i < NUM_QUADS * 4 * 2; i++) { - printf("%d: %f %f %f\n", i, p[0], p[1], p[2]); - p += 3; - } - } -} - - -static void -Init(void) -{ - int bytes = NUM_QUADS * 4 * 2 * 3 * sizeof(float); - GLfloat *f; - -#if 1 - glGenBuffers(1, &Vbuffer); - glBindBuffer(GL_ARRAY_BUFFER, Vbuffer); - glBufferData(GL_ARRAY_BUFFER_ARB, bytes, NULL, GL_STATIC_DRAW_ARB); - f = (float *) glMapBuffer(GL_ARRAY_BUFFER_ARB, GL_WRITE_ONLY_ARB); - gen_quads(f); - glUnmapBuffer(GL_ARRAY_BUFFER_ARB); - glColorPointer(3, GL_FLOAT, 6*sizeof(float), (void *) 0); - glVertexPointer(3, GL_FLOAT, 6*sizeof(float), (void *) 12); -#else - f = buf; - gen_quads(f); - glColorPointer(3, GL_FLOAT, 6*sizeof(float), buf); - glVertexPointer(3, GL_FLOAT, 6*sizeof(float), buf + 3); -#endif - - glEnableClientState(GL_COLOR_ARRAY); - glEnableClientState(GL_VERTEX_ARRAY); - - glEnable(GL_DEPTH_TEST); - - glClearColor(0.5, 0.5, 0.5, 0.0); -} - - -int -main(int argc, char *argv[]) -{ - glutInit(&argc, argv); - glutInitWindowPosition(0, 0); - glutInitWindowSize(600, 600); - glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH); - Win = glutCreateWindow(argv[0]); - glewInit(); - glutReshapeFunc(Reshape); - glutKeyboardFunc(Key); - glutSpecialFunc(SpecialKey); - glutDisplayFunc(Draw); - if (Anim) - glutIdleFunc(Idle); - Init(); - glutMainLoop(); - return 0; -} |