aboutsummaryrefslogtreecommitdiffstats
path: root/progs/tests/arbgpuprog.c
blob: 23aa899d9634b2a68b4a2ef971b068e83d40144b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
/**
 * Just compile ARB vert/frag program from named file(s).
 */

#include <assert.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <GL/glut.h>


static GLuint FragProg;
static GLuint VertProg;
static GLint Win;

static PFNGLPROGRAMLOCALPARAMETER4FVARBPROC glProgramLocalParameter4fvARB_func;
static PFNGLPROGRAMLOCALPARAMETER4DARBPROC glProgramLocalParameter4dARB_func;
static PFNGLGETPROGRAMLOCALPARAMETERDVARBPROC glGetProgramLocalParameterdvARB_func;
static PFNGLGENPROGRAMSARBPROC glGenProgramsARB_func;
static PFNGLPROGRAMSTRINGARBPROC glProgramStringARB_func;
static PFNGLBINDPROGRAMARBPROC glBindProgramARB_func;
static PFNGLISPROGRAMARBPROC glIsProgramARB_func;
static PFNGLDELETEPROGRAMSARBPROC glDeleteProgramsARB_func;


static void Redisplay( void )
{
   glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
   glutSwapBuffers();
   exit(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, -15.0 );
}


static void Key( unsigned char key, int x, int y )
{
   (void) x;
   (void) y;
   switch (key) {
      case 27:
         glDeleteProgramsARB_func(1, &VertProg);
         glDeleteProgramsARB_func(1, &FragProg);
         glutDestroyWindow(Win);
         exit(0);
         break;
   }
   glutPostRedisplay();
}


/* A helper for finding errors in program strings */
static int FindLine( const char *program, int position )
{
   int i, line = 1;
   for (i = 0; i < position; i++) {
      if (program[i] == '\n')
         line++;
   }
   return line;
}


static void Init( const char *vertProgFile,
                  const char *fragProgFile )
{
   GLint errorPos;
   char buf[10*1000];

   if (!glutExtensionSupported("GL_ARB_vertex_program")) {
      printf("Sorry, this demo requires GL_ARB_vertex_program\n");
      exit(1);
   }
   if (!glutExtensionSupported("GL_ARB_fragment_program")) {
      printf("Sorry, this demo requires GL_ARB_fragment_program\n");
      exit(1);
   }
         
   printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));

   /*
    * Get extension function pointers.
    */
   glProgramLocalParameter4fvARB_func = (PFNGLPROGRAMLOCALPARAMETER4FVARBPROC) glutGetProcAddress("glProgramLocalParameter4fvARB");
   assert(glProgramLocalParameter4fvARB_func);

   glProgramLocalParameter4dARB_func = (PFNGLPROGRAMLOCALPARAMETER4DARBPROC) glutGetProcAddress("glProgramLocalParameter4dARB");
   assert(glProgramLocalParameter4dARB_func);

   glGetProgramLocalParameterdvARB_func = (PFNGLGETPROGRAMLOCALPARAMETERDVARBPROC) glutGetProcAddress("glGetProgramLocalParameterdvARB");
   assert(glGetProgramLocalParameterdvARB_func);

   glGenProgramsARB_func = (PFNGLGENPROGRAMSARBPROC) glutGetProcAddress("glGenProgramsARB");
   assert(glGenProgramsARB_func);

   glProgramStringARB_func = (PFNGLPROGRAMSTRINGARBPROC) glutGetProcAddress("glProgramStringARB");
   assert(glProgramStringARB_func);

   glBindProgramARB_func = (PFNGLBINDPROGRAMARBPROC) glutGetProcAddress("glBindProgramARB");
   assert(glBindProgramARB_func);

   glIsProgramARB_func = (PFNGLISPROGRAMARBPROC) glutGetProcAddress("glIsProgramARB");
   assert(glIsProgramARB_func);

   glDeleteProgramsARB_func = (PFNGLDELETEPROGRAMSARBPROC) glutGetProcAddress("glDeleteProgramsARB");
   assert(glDeleteProgramsARB_func);

   /*
    * Vertex program
    */
   if (vertProgFile) {
      FILE *f;
      int len;

      glGenProgramsARB_func(1, &VertProg);
      assert(VertProg > 0);
      glBindProgramARB_func(GL_VERTEX_PROGRAM_ARB, VertProg);

      f = fopen(vertProgFile, "r");
      if (!f) {
         printf("Unable to open %s\n", fragProgFile);
         exit(1);
      }

      len = fread(buf, 1, 10*1000,f);
      glProgramStringARB_func(GL_VERTEX_PROGRAM_ARB,
                              GL_PROGRAM_FORMAT_ASCII_ARB,
                              len,
                              (const GLubyte *) buf);

      glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorPos);
      if (glGetError() != GL_NO_ERROR || errorPos != -1) {
         int l = FindLine(buf, errorPos);
         printf("Vertex Program Error (pos=%d line=%d): %s\n", errorPos, l,
                (char *) glGetString(GL_PROGRAM_ERROR_STRING_ARB));
         exit(0);
      }
      else {
         glEnable(GL_VERTEX_PROGRAM_ARB);
         printf("Vertex Program OK\n");
      }
   }

   /*
    * Fragment program
    */
   if (fragProgFile) {
      FILE *f;
      int len;

      glGenProgramsARB_func(1, &FragProg);
      assert(FragProg > 0);
      glBindProgramARB_func(GL_FRAGMENT_PROGRAM_ARB, FragProg);

      f = fopen(fragProgFile, "r");
      if (!f) {
         printf("Unable to open %s\n", fragProgFile);
         exit(1);
      }

      len = fread(buf, 1, 10*1000,f);
      glProgramStringARB_func(GL_FRAGMENT_PROGRAM_ARB,
                              GL_PROGRAM_FORMAT_ASCII_ARB,
                              len,
                              (const GLubyte *) buf);

      glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorPos);
      if (glGetError() != GL_NO_ERROR || errorPos != -1) {
         int l = FindLine(buf, errorPos);
         printf("Fragment Program Error (pos=%d line=%d): %s\n", errorPos, l,
                (char *) glGetString(GL_PROGRAM_ERROR_STRING_ARB));
         exit(0);
      }
      else {
         glEnable(GL_FRAGMENT_PROGRAM_ARB);
         printf("Fragment Program OK\n");
      }
   }
}


int main( int argc, char *argv[] )
{
   const char *vertProgFile = NULL, *fragProgFile = NULL;
   int i;

   glutInit( &argc, argv );
   glutInitWindowPosition( 0, 0 );
   glutInitWindowSize( 200, 200 );
   glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH );
   Win = glutCreateWindow(argv[0]);
   glutReshapeFunc( Reshape );
   glutKeyboardFunc( Key );
   glutDisplayFunc( Redisplay );

   if (argc == 1) {
      printf("arbgpuprog:\n");
      printf("  Compile GL_ARB_vertex/fragment_programs, report any errors.\n");
      printf("Usage:\n");
      printf("  arbgpuprog [--vp vertprogfile] [--fp fragprogfile]\n");
      exit(1);
   }

   for (i = 1; i < argc; i++) {
      if (strcmp(argv[i], "--vp") == 0) {
         vertProgFile = argv[i+1];
         i++;
      }
      else if (strcmp(argv[i], "--fp") == 0) {
         fragProgFile = argv[i+1];
         i++;
      }
   }

   Init(vertProgFile, fragProgFile);

   glutMainLoop();
   return 0;
}