summaryrefslogtreecommitdiff
path: root/progs/slang/cltest.c
blob: 5736f3eab1058c499c44b6726390c68ffff98eaa (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
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
/*
 * GL_ARB_shading_language_100 test application.
 *
 * Tests correctness of emited code. Runs multiple well-formed shaders and checks if
 * they produce valid results.
 *
 * Requires specific support on the GL implementation side. A special function printMESA()
 * must be supported in the language that prints current values of generic type
 * to the appropriate shader's info log, and optionally to the screen.
 *
 * Author: Michal Krol
 */

#include "framework.h"

#define EPSILON 0.0001f

static GLhandleARB vert = 0;
static GLhandleARB prog = 0;

static int get_line (FILE *f, char *line, int size)
{
   if (fgets (line, size, f) == NULL)
      return 0;
   if (line[strlen (line) - 1] == '\n')
      line[strlen (line) - 1] = '\0';
   return 1;
}

struct ATTRIB
{
   char name[32];
   GLfloat value[64][4];
   GLuint count;
};

struct ATTRIBS
{
   struct ATTRIB attrib[32];
   GLuint count;
};

struct SHADER
{
   char code[16000];
   GLfloat output[1000];
   GLuint count;
};

enum SHADER_LOAD_STATE
{
   SLS_NONE,
   SLS_CODE,
   SLS_OUTPUT
};

struct PROGRAM
{
   struct PROGRAM *next;
   char name[256];
   struct ATTRIBS attribs;
   struct SHADER vertex;
};

enum PROGRAM_LOAD_STATE
{
   PLS_NONE,
   PLS_ATTRIB,
   PLS_VERTEX
};

static struct PROGRAM *program = NULL;

static void load_test_file (const char *filename, struct PROGRAM **program)
{
   struct PROGRAM **currprog = program;
   FILE *f;
   char line[256];
   enum PROGRAM_LOAD_STATE pls;
   enum SHADER_LOAD_STATE sls;

   f = fopen (filename, "r");
   if (f == NULL)
      return;

   while (get_line (f, line, sizeof (line))) {
      if (line[0] == '$') {
         if (strncmp (line + 1, "program", 7) == 0) {
            if (*currprog != NULL)
               currprog = &(**currprog).next;
            *currprog = (struct PROGRAM *) (malloc (sizeof (struct PROGRAM)));
            if (*currprog == NULL)
               break;
            (**currprog).next = NULL;
            strcpy ((**currprog).name, line + 9);
            (**currprog).attribs.count = 0;
            (**currprog).vertex.code[0] = '\0';
            (**currprog).vertex.count = 0;
            pls = PLS_NONE;
         }
         else if (strncmp (line + 1, "attrib", 6) == 0) {
            if (*currprog == NULL)
               break;
            strcpy ((**currprog).attribs.attrib[(**currprog).attribs.count].name, line + 8);
            (**currprog).attribs.attrib[(**currprog).attribs.count].count = 0;
            (**currprog).attribs.count++;
            pls = PLS_ATTRIB;
         }
         else if (strcmp (line + 1, "vertex") == 0) {
            if (*currprog == NULL)
               break;
            pls = PLS_VERTEX;
            sls = SLS_NONE;
         }
         else if (strcmp (line + 1, "code") == 0) {
            if (*currprog == NULL || pls != PLS_VERTEX)
               break;
            sls = SLS_CODE;
         }
         else if (strcmp (line + 1, "output") == 0) {
            if (*currprog == NULL || pls != PLS_VERTEX)
               break;
            sls = SLS_OUTPUT;
         }
      }
      else {
         if ((*currprog == NULL || pls == PLS_NONE || sls == SLS_NONE) && line[0] != '\0')
            break;
         if (*currprog != NULL && pls == PLS_VERTEX) {
            if (sls == SLS_CODE) {
               strcat ((**currprog).vertex.code, line);
               strcat ((**currprog).vertex.code, "\n");
            }
            else if (sls == SLS_OUTPUT && line[0] != '\0') {
               if (strcmp (line, "true") == 0)
                  (**currprog).vertex.output[(**currprog).vertex.count] = 1.0f;
               else if (strcmp (line, "false") == 0)
                  (**currprog).vertex.output[(**currprog).vertex.count] = 0.0f;
               else
                  sscanf (line, "%f", &(**currprog).vertex.output[(**currprog).vertex.count]);
               (**currprog).vertex.count++;
            }
         }
         else if (*currprog != NULL && pls == PLS_ATTRIB && line[0] != '\0') {
            struct ATTRIB *att = &(**currprog).attribs.attrib[(**currprog).attribs.count - 1];
            GLfloat *vec = att->value[att->count];
            sscanf (line, "%f %f %f %f", &vec[0], &vec[1], &vec[2], &vec[3]);
            att->count++;
         }
      }
   }

   fclose (f);
}

void InitScene (void)
{
   prog = glCreateProgramObjectARB ();
   vert = glCreateShaderObjectARB (GL_VERTEX_SHADER_ARB);
   glAttachObjectARB (prog, vert);
   glDeleteObjectARB (vert);
   load_test_file ("cltest.txt", &program);
}

void RenderScene (void)
{
   struct PROGRAM *nextprogram;
   char *code;
   GLint info_length, length;
   char output[65000], *p;
   GLuint i;

   if (program == NULL)
      exit (0);

   code = program->vertex.code;
   glShaderSourceARB (vert, 1, &code, NULL);
   glCompileShaderARB (vert);
   CheckObjectStatus (vert);

   for (i = 0; i < program->attribs.count; i++) {
      const char *name = program->attribs.attrib[i].name;
      if (strcmp (name, "gl_Vertex") != 0)
         glBindAttribLocationARB (prog, i, name);
   }

   glLinkProgramARB (prog);
   CheckObjectStatus (prog);
   glUseProgramObjectARB (prog);

   printf ("\n--- %s\n", program->name);

   glGetObjectParameterivARB (vert, GL_OBJECT_INFO_LOG_LENGTH_ARB, &info_length);

   glBegin (GL_POINTS);
   if (program->attribs.count == 0) {
      glVertex2f (0.0f, 0.0f);
   }
   else {
      for (i = 0; i < program->attribs.attrib[0].count; i++) {
         GLuint j;
         for (j = 0; j < program->attribs.count; j++) {
            GLuint n = (j + 1) % program->attribs.count;
            GLfloat *vec = program->attribs.attrib[n].value[i];
            const char *name = program->attribs.attrib[n].name;
            if (strcmp (name, "gl_Vertex") == 0)
               glVertex4fv (vec);
            else
               glVertexAttrib4fvARB (n, vec);
         }
      }
   }
   glEnd ();
   glFlush ();

   glGetInfoLogARB (vert, sizeof (output), &length, output);
   p = output + info_length - 1;
   for (i = 0; i < program->vertex.count; i++) {
      GLfloat value;
      if (p == NULL) {
         printf ("*** %s\n", "I/O error");
         break;
      }
      if (strncmp (p, "true", 4) == 0)
         value = 1.0f;
      else if (strncmp (p, "false", 5) == 0)
         value = 0.0f;
      else if (sscanf (p, "%f", &value) != 1) {
         printf ("*** %s\n", "I/O error");
         break;
      }
      if (fabs (value - program->vertex.output[i]) > EPSILON) {
         printf ("*** Values are different, is %f, should be %f\n", value,
                 program->vertex.output[i]);
      }
      p = strchr (p, '\n');
      if (p != NULL)
         p++;
   }
   if (*p != '\0')
      printf ("*** %s\n", "I/O error");

   nextprogram = program->next;
   free (program);
   program = nextprogram;
}

int main (int argc, char *argv[])
{
   InitFramework (&argc, argv);
   return 0;
}