diff options
| -rw-r--r-- | progs/tests/Makefile | 1 | ||||
| -rw-r--r-- | progs/tests/quads.c | 258 |
2 files changed, 259 insertions, 0 deletions
diff --git a/progs/tests/Makefile b/progs/tests/Makefile index 7e8c0c8e34d..3bead54e200 100644 --- a/progs/tests/Makefile +++ b/progs/tests/Makefile @@ -60,6 +60,7 @@ SOURCES = \ pbo.c \ prog_parameter.c \ projtex.c \ + quads.c \ random.c \ readrate.c \ seccolor.c \ diff --git a/progs/tests/quads.c b/progs/tests/quads.c new file mode 100644 index 00000000000..1bf57e6337d --- /dev/null +++ b/progs/tests/quads.c @@ -0,0 +1,258 @@ +/** + * Draw colored quads. + */ + + +#define GL_GLEXT_PROTOTYPES +#include <stdio.h> +#include <stdlib.h> +#include <math.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; + +static GLfloat buf[NUM_QUADS * 6 * 4]; + +static GLboolean SwapBuffers = 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 (SwapBuffers) + 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': + SwapBuffers = !SwapBuffers; + 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]); + glutReshapeFunc(Reshape); + glutKeyboardFunc(Key); + glutSpecialFunc(SpecialKey); + glutDisplayFunc(Draw); + if (Anim) + glutIdleFunc(Idle); + Init(); + glutMainLoop(); + return 0; +} |