tests/spec/gl-1.0/no-op-paths.c

   1 /*  BEGIN_COPYRIGHT -*- glean -*-
   2  *
   3  *  Copyright (C) 1999  Allen Akin   All Rights Reserved.
   4  *  Copyright (C) 2015  Intel Corporation.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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  22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  *
  25  *  END_COPYRIGHT
  26  */
  27 /** @file paths.c
  28  *
  29  *  Test basic GL rendering paths.
  30  *
  31  *
  32  *     Based on the original Glean tpaths.cpp test, this test verifies
  33  *     that basic, trival OpenGL paths work as expected. For example,
  34  *     glAlphaFunc(GL_GEQUAL, 0.0) should always pass and
  35  *     glAlphaFunc(GL_LESS, 0.0) should always fail.  We setup trivial
  36  *     pass and fail conditions for each of alpha test, blending, color mask,
  37  *     depth test, logic ops, scissor, stencil, stipple, and texture and
  38  *     make sure they work as expected.  We also setup trival-pass for all
  39  *     these paths simultaneously and test that as well.
  40  *
  41  *     To test for pass/fail we examine the color buffer for white or black,
  42  *     respectively.
  43  *
  44  *     Authors:
  45  *     Brian Paul <brianp@valinux.com>
  46  *     Adapted to Piglit by Juliet Fru <julietfru@gmail.com>, August 2015.
  47  */
  48
  49 #include "piglit-util-gl.h"
  50
  51 PIGLIT_GL_TEST_CONFIG_BEGIN
  52
  53         config.supports_gl_compat_version = 10;
  54
  55         config.window_visual = PIGLIT_GL_VISUAL_RGBA |
  56                 PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_DEPTH |
  57                 PIGLIT_GL_VISUAL_STENCIL;
  58         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  59
  60 PIGLIT_GL_TEST_CONFIG_END
  61
  62 enum path
  63 {
  64         ALPHA,
  65         BLEND,
  66         COLOR_MASK,
  67         DEPTH,
  68         LOGIC,
  69         SCISSOR,
  70         STENCIL,
  71         STIPPLE,
  72         TEXTURE,
  73         NUM_PATHS               /* end-of-list token */
  74 };
  75
  76 enum state
  77 {
  78         DISABLE,
  79         ALWAYS_PASS,
  80         ALWAYS_FAIL
  81 };
  82
  83 const char *
  84 path_name(enum path paths)
  85 {
  86         switch (paths) {
  87         case ALPHA:
  88                 return "Alpha Test";
  89         case BLEND:
  90                 return "Blending";
  91         case COLOR_MASK:
  92                 return "Color Mask";
  93         case DEPTH:
  94                 return "Depth Test";
  95         case LOGIC:
  96                 return "LogicOp";
  97         case SCISSOR:
  98                 return "Scissor Test";
  99         case STENCIL:
 100                 return "Stencil Test";
 101         case STIPPLE:
 102                 return "Polygon Stipple";
 103         case TEXTURE:
 104                 return "Modulated Texture";
 105         case NUM_PATHS:
 106                 return "paths";
 107          default:
 108                 return "BAD PATH VALUE!";
 109         }
 110 }
 111
 112 void
 113 set_path_state(enum path paths, enum state states)
 114 {
 115         int i;
 116         switch (paths) {
 117         case ALPHA:
 118                 if (states == ALWAYS_PASS) {
 119                         glAlphaFunc(GL_GEQUAL, 0.0);
 120                         glEnable(GL_ALPHA_TEST);
 121                 } else if (states == ALWAYS_FAIL) {
 122                         glAlphaFunc(GL_GREATER, 1.0);
 123                         glEnable(GL_ALPHA_TEST);
 124                 } else {
 125                         glDisable(GL_ALPHA_TEST);
 126                 }
 127                 break;
 128         case BLEND:
 129                 if (states == ALWAYS_PASS) {
 130                         glBlendFunc(GL_ONE, GL_ZERO);
 131                         glEnable(GL_BLEND);
 132                 } else if (states == ALWAYS_FAIL) {
 133                         glBlendFunc(GL_ZERO, GL_ONE);
 134                         glEnable(GL_BLEND);
 135                 } else {
 136                         glDisable(GL_BLEND);
 137                 }
 138                 break;
 139         case COLOR_MASK:
 140                 if (states == ALWAYS_PASS) {
 141                         glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
 142                 } else if (states == ALWAYS_FAIL) {
 143                         glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
 144                 } else {
 145                         glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
 146                 }
 147                 break;
 148         case DEPTH:
 149                 if (states == ALWAYS_PASS) {
 150                         glDepthFunc(GL_ALWAYS);
 151                         glEnable(GL_DEPTH_TEST);
 152                 } else if (states == ALWAYS_FAIL) {
 153                         glDepthFunc(GL_NEVER);
 154                         glEnable(GL_DEPTH_TEST);
 155                 } else {
 156                         glDisable(GL_DEPTH_TEST);
 157                 }
 158                 break;
 159         case LOGIC:
 160                 if (states == ALWAYS_PASS) {
 161                         glLogicOp(GL_OR);
 162                         glEnable(GL_COLOR_LOGIC_OP);
 163                 } else if (states == ALWAYS_FAIL) {
 164                         glLogicOp(GL_AND);
 165                         glEnable(GL_COLOR_LOGIC_OP);
 166                 } else {
 167                         glDisable(GL_COLOR_LOGIC_OP);
 168                 }
 169                 break;
 170         case SCISSOR:
 171                 if (states == ALWAYS_PASS) {
 172                         glScissor(0, 0, piglit_width, piglit_height);
 173                         glEnable(GL_SCISSOR_TEST);
 174                 } else if (states == ALWAYS_FAIL) {
 175                         glScissor(0, 0, 0, 0);
 176                         glEnable(GL_SCISSOR_TEST);
 177                 } else {
 178                         glDisable(GL_SCISSOR_TEST);
 179                 }
 180                 break;
 181         case STENCIL:
 182                 if (states == ALWAYS_PASS) {
 183                         /* pass if reference <= stencil value (ref = 0) */
 184                         glStencilFunc(GL_LEQUAL, 0, ~0);
 185                         glEnable(GL_STENCIL_TEST);
 186                 } else if (states == ALWAYS_FAIL) {
 187                         /* pass if reference > stencil value (ref = 0) */
 188                         glStencilFunc(GL_GREATER, 0, ~0);
 189                         glEnable(GL_STENCIL_TEST);
 190                 } else {
 191                         glDisable(GL_STENCIL_TEST);
 192                 }
 193                 break;
 194         case STIPPLE:
 195                 if (states == ALWAYS_PASS) {
 196                         GLubyte stipple[4 * 32];
 197                         for (i = 0; i < 4 * 32; i++)
 198                                 stipple[i] = 0xff;
 199                         glPolygonStipple(stipple);
 200                         glEnable(GL_POLYGON_STIPPLE);
 201                 } else if (states == ALWAYS_FAIL) {
 202                         GLubyte stipple[4 * 32];
 203                         for (i = 0; i < 4 * 32; i++)
 204                                 stipple[i] = 0x0;
 205                         glPolygonStipple(stipple);
 206                         glEnable(GL_POLYGON_STIPPLE);
 207                 } else {
 208                         glDisable(GL_POLYGON_STIPPLE);
 209                 }
 210                 break;
 211         case TEXTURE:
 212                 if (states == DISABLE) {
 213                         glDisable(GL_TEXTURE_2D);
 214                 } else {
 215                         GLubyte val = (states == ALWAYS_PASS) ? 0xff : 0x00;
 216                         GLubyte texImage[4 * 4 * 4];
 217                         for (i = 0; i < 4 * 4 * 4; i++)
 218                                 texImage[i] = val;
 219                         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 4, 4, 0,
 220                                      GL_RGBA, GL_UNSIGNED_BYTE, texImage);
 221                         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
 222                                         GL_NEAREST);
 223                         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
 224                                         GL_NEAREST);
 225                         glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE,
 226                                   GL_MODULATE);
 227                         glEnable(GL_TEXTURE_2D);
 228                 }
 229                 break;
 230         default:
 231                 break;
 232         }
 233 }
 234
 235 void
 236 piglit_init(int argc, char **argv)
 237 {
 238         /* No init */
 239 }
 240
 241 enum piglit_result
 242 piglit_display(void)
 243 {
 244         bool pass = true;
 245         int i;
 246
 247         static const float white[3] = { 1.0, 1.0, 1.0 };
 248         static const float black[3] = { 0.0, 0.0, 0.0 };
 249
 250         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
 251
 252         glDisable(GL_DITHER);
 253
 254         /* test always-pass paths */
 255         for (i = 0; i < NUM_PATHS; i++) {
 256                 glClear(GL_COLOR_BUFFER_BIT);
 257                 set_path_state(i, ALWAYS_PASS);
 258
 259                 /* draw polygon */
 260                 piglit_draw_rect(i * 10, 0, 10, 10);
 261
 262                 set_path_state(i, DISABLE);
 263
 264                 /* test buffer */
 265                 if (!piglit_probe_pixel_rgb(i * 10 + 4, 4, white)) {
 266                         printf("Failure with path %s set to always pass.\n",
 267                                path_name(i));
 268
 269                         pass = false;
 270                 }
 271         }
 272
 273         /* enable all always-pass paths */
 274         {
 275                 glClear(GL_COLOR_BUFFER_BIT);
 276                 for (i = 0; i < NUM_PATHS; i++) {
 277                         set_path_state(i, ALWAYS_PASS);
 278                 }
 279
 280                 /* draw polygon */
 281                 piglit_draw_rect(0, 10, 10, 10);
 282
 283                 for (i = 0; i < NUM_PATHS; i++) {
 284                         set_path_state(i, DISABLE);
 285                 }
 286
 287                 /* test buffer */
 288                 if (!piglit_probe_pixel_rgb(4, 14, white)) {
 289                         printf("Failure with always-pass paths enabled.\n");
 290                         pass = false;
 291                 }
 292         }
 293
 294         /* test never-pass paths */
 295         for (i = 0; i < NUM_PATHS; i++) {
 296                 glClear(GL_COLOR_BUFFER_BIT);
 297                 set_path_state(i, ALWAYS_FAIL);
 298
 299                 /* draw polygon */
 300                 piglit_draw_rect(10 * i, 20, 10, 10);
 301
 302                 set_path_state(i, DISABLE);
 303
 304                 /* test buffer */
 305                 if (!piglit_probe_pixel_rgb(10 * i + 4, 24, black)) {
 306                         printf("Failure with %s set to fail mode.\n",
 307                                path_name(i));
 308                         pass = false;
 309                 }
 310         }
 311
 312         piglit_present_results();
 313         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 314 }