tests/shaders/fp-kil.c

   1 /*
   2  * Copyright (c) The Piglit project 2007
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  18  * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 /**
  25  * Test KIL instruction.
  26  */
  27
  28 #include "piglit-util.h"
  29
  30 int piglit_width = 200, piglit_height = 200;
  31 int piglit_window_mode = GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH;
  32
  33 #define NUM_PROGRAMS 2
  34
  35 static GLuint FragProg[NUM_PROGRAMS];
  36
  37 static const char* const ProgramText[NUM_PROGRAMS] = {
  38                 "!!ARBfp1.0\n"
  39                 "TEMP r0;\n"
  40                 "MOV result.color, fragment.color;\n"
  41                 "KIL fragment.texcoord[0];\n"
  42                 "END",
  43
  44                 "!!ARBfp1.0\n"
  45                 "TEMP r0;\n"
  46                 "TEX r0, fragment.texcoord[0], texture[0], 2D;\n"
  47                 "KIL -r0;\n"
  48                 "MOV result.color, fragment.color;\n"
  49                 "END"
  50 };
  51
  52 static void DoFrame(void)
  53 {
  54         glClearColor(0.0, 0.0, 0.0, 1.0);
  55         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  56
  57         glEnable(GL_FRAGMENT_PROGRAM_ARB);
  58
  59         glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, FragProg[0]);
  60
  61         glColor3f(0.0, 1.0, 0.0);
  62         glBegin(GL_QUADS);
  63                 glTexCoord2f(-1, -1);
  64                 glVertex2f(0, 0);
  65                 glTexCoord2f(1, -1);
  66                 glVertex2f(1, 0);
  67                 glTexCoord2f(1, 1);
  68                 glVertex2f(1, 1);
  69                 glTexCoord2f(-1, 1);
  70                 glVertex2f(0, 1);
  71         glEnd();
  72
  73         glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, FragProg[1]);
  74
  75         glBegin(GL_QUADS);
  76                 glTexCoord2f(0, 0);
  77                 glVertex2f(0, 1);
  78                 glTexCoord2f(1, 0);
  79                 glVertex2f(1, 1);
  80                 glTexCoord2f(1, 1);
  81                 glVertex2f(1, 2);
  82                 glTexCoord2f(0, 1);
  83                 glVertex2f(0, 2);
  84         glEnd();
  85
  86         glutSwapBuffers();
  87 }
  88
  89 static const struct {
  90         const char* name;
  91         float x, y;
  92         float expected[4];
  93 } Probes[] = {
  94         // Program 0
  95         {
  96                 "basic #1",
  97                 0.2, 0.2,
  98                 { 0.0, 0.0, 0.0, 1.0 }
  99         },
 100         {
 101                 "basic #2",
 102                 0.8, 0.2,
 103                 { 0.0, 0.0, 0.0, 1.0 }
 104         },
 105         {
 106                 "basic #3",
 107                 0.8, 0.8,
 108                 { 0.0, 1.0, 0.0, 1.0 }
 109         },
 110         {
 111                 "basic #4",
 112                 0.2, 0.8,
 113                 { 0.0, 0.0, 0.0, 1.0 }
 114         },
 115
 116         // Program 0
 117         {
 118                 "texture #1",
 119                 0.125, 1.125,
 120                 { 0.0, 1.0, 0.0, 1.0 }
 121         },
 122         {
 123                 "texture #2",
 124                 0.375, 1.125,
 125                 { 0.0, 0.0, 0.0, 1.0 }
 126         },
 127         {
 128                 "texture #3",
 129                 0.625, 1.125,
 130                 { 0.0, 0.0, 0.0, 1.0 }
 131         },
 132                 {
 133                 "texture #4",
 134                 0.875, 1.125,
 135                 { 0.0, 0.0, 0.0, 1.0 }
 136         },
 137         {
 138                 "texture #5",
 139                 0.125, 1.375,
 140                 { 0.0, 0.0, 0.0, 1.0 }
 141         },
 142         {
 143                 "texture #6",
 144                 0.375, 1.375,
 145                 { 0.0, 0.0, 0.0, 1.0 }
 146         },
 147         {
 148                 "texture #7",
 149                 0.625, 1.375,
 150                 { 0.0, 0.0, 0.0, 1.0 }
 151         },
 152         {
 153                 "texture #8",
 154                 0.875, 1.375,
 155                 { 0.0, 0.0, 0.0, 1.0 }
 156         },
 157         {
 158                 "texture #9",
 159                 0.125, 1.625,
 160                 { 0.0, 0.0, 0.0, 1.0 }
 161         },
 162         {
 163                 "texture #10",
 164                 0.375, 1.625,
 165                 { 0.0, 0.0, 0.0, 1.0 }
 166         },
 167         {
 168                 "texture #11",
 169                 0.625, 1.625,
 170                 { 0.0, 0.0, 0.0, 1.0 }
 171         },
 172         {
 173                 "texture #12",
 174                 0.875, 1.625,
 175                 { 0.0, 0.0, 0.0, 1.0 }
 176         },
 177         {
 178                 "texture #13",
 179                 0.125, 1.875,
 180                 { 0.0, 0.0, 0.0, 1.0 }
 181         },
 182         {
 183                 "texture #14",
 184                 0.375, 1.875,
 185                 { 0.0, 0.0, 0.0, 1.0 }
 186         },
 187         {
 188                 "texture #15",
 189                 0.625, 1.875,
 190                 { 0.0, 0.0, 0.0, 1.0 }
 191         },
 192         {
 193                 "texture #16",
 194                 0.875, 1.875,
 195                 { 0.0, 0.0, 0.0, 1.0 }
 196         },
 197
 198         // Sentinel!
 199         {
 200                 0,
 201                         0, 0,
 202                 { 0, 0, 0, 0 }
 203         }
 204 };
 205
 206 static int DoTest( void )
 207 {
 208         int idx;
 209         GLfloat dmax;
 210
 211         glReadBuffer( GL_FRONT );
 212         dmax = 0;
 213
 214         idx = 0;
 215         while(Probes[idx].name) {
 216                 GLfloat probe[4];
 217                 GLfloat delta[4];
 218                 int i;
 219
 220                 glReadPixels((int)(Probes[idx].x*piglit_width/2),
 221                              (int)(Probes[idx].y*piglit_height/2),
 222                              1, 1,
 223                              GL_RGBA, GL_FLOAT, probe);
 224
 225                 printf("%20s (%3.1f,%3.1f): %f,%f,%f,%f",
 226                        Probes[idx].name,
 227                        Probes[idx].x, Probes[idx].y,
 228                        probe[0], probe[1], probe[2], probe[3]);
 229
 230                 for(i = 0; i < 4; ++i) {
 231                         delta[i] = probe[i] - Probes[idx].expected[i];
 232
 233                         if (delta[i] > dmax) dmax = delta[i];
 234                         else if (-delta[i] > dmax) dmax = -delta[i];
 235                 }
 236
 237                 printf("   Delta: %f,%f,%f,%f\n", delta[0], delta[1], delta[2], delta[3]);
 238
 239                 idx++;
 240         }
 241
 242         printf("Max delta: %f\n", dmax);
 243
 244         if (dmax >= 0.02)
 245                 return 0;
 246         else
 247                 return 1;
 248 }
 249
 250 enum piglit_result
 251 piglit_display(void)
 252 {
 253         int pass;
 254
 255         DoFrame();
 256         pass = DoTest();
 257
 258         return pass ? PIGLIT_SUCCESS : PIGLIT_FAILURE;
 259 }
 260
 261
 262 static void Reshape(int width, int height)
 263 {
 264         piglit_width = width;
 265         piglit_height = height;
 266         glViewport(0, 0, width, height);
 267         glMatrixMode(GL_PROJECTION);
 268         glLoadIdentity();
 269         glOrtho(0.0, 2.0, 0.0, 2.0, -2.0, 6.0);
 270         glScalef(1.0, 1.0, -1.0); // flip z-axis
 271         glMatrixMode(GL_MODELVIEW);
 272         glLoadIdentity();
 273 }
 274
 275 void
 276 piglit_init(int argc, char **argv)
 277 {
 278         int i, x, y;
 279         GLubyte tex[4][4][4];
 280
 281         glutReshapeFunc(Reshape);
 282
 283         if (!GLEW_VERSION_1_3) {
 284                 printf("Requires OpenGL 1.3\n");
 285                 piglit_report_result(PIGLIT_SKIP);
 286         }
 287
 288         printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
 289
 290         piglit_require_fragment_program();
 291
 292         /*
 293          * Fragment programs
 294          */
 295         for(i = 0; i < NUM_PROGRAMS; ++i)
 296                 FragProg[i] = piglit_compile_program(GL_FRAGMENT_PROGRAM_ARB, ProgramText[i]);
 297
 298         /*
 299          * Textures
 300          */
 301         for(y = 0; y < 4; ++y) {
 302                 for(x = 0; x < 4; ++x) {
 303                         tex[y][x][0] = (x & 1) ? 255 : 0;
 304                         tex[y][x][1] = (x & 2) ? 255 : 0;
 305                         tex[y][x][2] = (y & 1) ? 255 : 0;
 306                         tex[y][x][3] = (y & 2) ? 255 : 0;
 307                 }
 308         }
 309
 310         glActiveTexture(GL_TEXTURE0);
 311         glEnable(GL_TEXTURE_2D);
 312         glBindTexture(GL_TEXTURE_2D, 1);
 313         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 4, 4, 0,
 314                      GL_RGBA, GL_UNSIGNED_BYTE, tex);
 315
 316         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 317         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 318
 319         Reshape(piglit_width, piglit_height);
 320 }