tests/spec/ati_envmap_bumpmap/bump.c

   1 /*
   2  * Copyright © 2010 Intel Corporation
   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  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 /** @file bump.c
  25  *
  26  * Test of ATI_envmap_bumpmap texture combiners.
  27  */
  28
  29 #include "piglit-util-gl.h"
  30
  31 #define TEXSIZE 32
  32
  33 PIGLIT_GL_TEST_CONFIG_BEGIN
  34
  35         config.supports_gl_compat_version = 10;
  36
  37         config.window_width = TEXSIZE*2;
  38         config.window_height = TEXSIZE*2;
  39         config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
  40         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  41
  42 PIGLIT_GL_TEST_CONFIG_END
  43
  44 static GLenum tex_unit, bump_unit;
  45
  46
  47 GLvoid
  48 draw_rect_multitex(float x, float y, float w, float h,
  49                    float tx, float ty, float tw, float th)
  50 {
  51         float verts[4][4];
  52         float tex[4][2];
  53
  54         verts[0][0] = x;
  55         verts[0][1] = y;
  56         verts[0][2] = 0.0;
  57         verts[0][3] = 1.0;
  58         tex[0][0] = tx;
  59         tex[0][1] = ty;
  60         verts[1][0] = x + w;
  61         verts[1][1] = y;
  62         verts[1][2] = 0.0;
  63         verts[1][3] = 1.0;
  64         tex[1][0] = tx + tw;
  65         tex[1][1] = ty;
  66         verts[2][0] = x + w;
  67         verts[2][1] = y + h;
  68         verts[2][2] = 0.0;
  69         verts[2][3] = 1.0;
  70         tex[2][0] = tx + tw;
  71         tex[2][1] = ty + th;
  72         verts[3][0] = x;
  73         verts[3][1] = y + h;
  74         verts[3][2] = 0.0;
  75         verts[3][3] = 1.0;
  76         tex[3][0] = tx;
  77         tex[3][1] = ty + th;
  78
  79         glVertexPointer(4, GL_FLOAT, 0, verts);
  80         glEnableClientState(GL_VERTEX_ARRAY);
  81
  82         glClientActiveTexture(GL_TEXTURE0);
  83         glTexCoordPointer(2, GL_FLOAT, 0, tex);
  84         glEnableClientState(GL_TEXTURE_COORD_ARRAY);
  85
  86         glClientActiveTexture(GL_TEXTURE1);
  87         glTexCoordPointer(2, GL_FLOAT, 0, tex);
  88         glEnableClientState(GL_TEXTURE_COORD_ARRAY);
  89
  90         glDrawArrays(GL_QUADS, 0, 4);
  91
  92         glDisableClientState(GL_VERTEX_ARRAY);
  93
  94         glClientActiveTexture(GL_TEXTURE0);
  95         glDisableClientState(GL_TEXTURE_COORD_ARRAY);
  96
  97         glClientActiveTexture(GL_TEXTURE1);
  98         glDisableClientState(GL_TEXTURE_COORD_ARRAY);
  99 }
 100
 101 enum piglit_result
 102 piglit_display(void)
 103 {
 104         GLboolean pass = GL_TRUE;
 105         GLuint tex, bump;
 106         int x, y;
 107         float bump_matrix[4] = {1.0, 0.0, 0.0, 1.0};
 108         float red[4]   = {1.0, 0.0, 0.0, 1.0};
 109         float green[4] = {0.0, 1.0, 0.0, 1.0};
 110         float blue[4]  = {0.0, 0.0, 1.0, 1.0};
 111         float white[4] = {1.0, 1.0, 1.0, 1.0};
 112         float bumpdata[TEXSIZE][TEXSIZE][2];
 113
 114         /* First: the base texture. */
 115         tex = piglit_rgbw_texture(GL_RGBA, TEXSIZE, TEXSIZE,
 116                                   GL_FALSE, GL_FALSE, GL_UNSIGNED_NORMALIZED);
 117         glActiveTexture(tex_unit);
 118         glEnable(GL_TEXTURE_2D);
 119         glBindTexture(GL_TEXTURE_2D, tex);
 120
 121         glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
 122         glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_REPLACE);
 123         glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_RGB, GL_TEXTURE);
 124
 125         /* Second: the bumpmap. */
 126         glGenTextures(1, &bump);
 127         glActiveTexture(bump_unit);
 128         glEnable(GL_TEXTURE_2D);
 129         glBindTexture(GL_TEXTURE_2D, bump);
 130
 131         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 132         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 133         glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
 134         glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_BUMP_ENVMAP_ATI);
 135         glTexEnvf(GL_TEXTURE_ENV, GL_BUMP_TARGET_ATI, tex_unit);
 136
 137         /* The bump map we use is going to end up rotating texels CCW. */
 138         for (y = 0; y < TEXSIZE; y++) {
 139                 for (x = 0; x < TEXSIZE; x++) {
 140                         if (y < TEXSIZE / 2) {
 141                                 if (x < TEXSIZE / 2) {
 142                                         bumpdata[y][x][0] = 0.0;
 143                                         bumpdata[y][x][1] = 0.5;
 144                                 } else {
 145                                         bumpdata[y][x][0] = -0.5;
 146                                         bumpdata[y][x][1] = 0.0;
 147                                 }
 148                         } else {
 149                                 if (x < TEXSIZE / 2) {
 150                                         bumpdata[y][x][0] = 0.5;
 151                                         bumpdata[y][x][1] = 0.0;
 152                                 } else {
 153                                         bumpdata[y][x][0] = 0.0;
 154                                         bumpdata[y][x][1] = -0.5;
 155                                 }
 156                         }
 157                 }
 158         }
 159
 160         glTexImage2D(GL_TEXTURE_2D, 0, GL_DU8DV8_ATI, TEXSIZE, TEXSIZE, 0,
 161                      GL_DUDV_ATI, GL_FLOAT, bumpdata);
 162
 163         glTexBumpParameterfvATI(GL_BUMP_ROT_MATRIX_ATI, bump_matrix);
 164
 165         draw_rect_multitex(-1, -1, 2, 2,
 166                            0, 0, 1, 1);
 167
 168         pass = pass && piglit_probe_rect_rgba(0,
 169                                               0,
 170                                               piglit_width / 2,
 171                                               piglit_height / 2,
 172                                               blue);
 173         pass = pass && piglit_probe_rect_rgba(piglit_width / 2,
 174                                               0,
 175                                               piglit_width / 2,
 176                                               piglit_height / 2,
 177                                               red);
 178         pass = pass && piglit_probe_rect_rgba(0,
 179                                               piglit_height / 2,
 180                                               piglit_width / 2,
 181                                               piglit_height / 2,
 182                                               white);
 183         pass = pass && piglit_probe_rect_rgba(piglit_width / 2,
 184                                               piglit_height / 2,
 185                                               piglit_width / 2,
 186                                               piglit_height / 2,
 187                                               green);
 188
 189         piglit_present_results();
 190
 191         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 192 }
 193
 194 void
 195 piglit_init(int argc, char **argv)
 196 {
 197         int size, num_units, *units;
 198         int i;
 199         GLboolean found_unit_1;
 200
 201         piglit_require_extension("GL_ATI_envmap_bumpmap");
 202
 203         glGetTexBumpParameterivATI(GL_BUMP_ROT_MATRIX_SIZE_ATI, &size);
 204         if (size < 4) {
 205                 printf("GL_BUMP_ROT_MATRIX_SIZE_ATI %d < 4\n", size);
 206                 piglit_report_result(PIGLIT_FAIL);
 207         }
 208         if (size != 4) {
 209                 printf("What does GL_BUMP_ROT_MATRIX_SIZE_ATI = %d even mean?\n",
 210                        size);
 211                 piglit_report_result(PIGLIT_SKIP);
 212         }
 213
 214         glGetTexBumpParameterivATI(GL_BUMP_NUM_TEX_UNITS_ATI, &num_units);
 215         if (num_units < 1) {
 216                 printf("GL_BUMP_NUM_TEX_UNITS_ATI %d < 4\n", num_units);
 217                 piglit_report_result(PIGLIT_FAIL);
 218         }
 219
 220         units = malloc(num_units * sizeof(int));
 221         glGetTexBumpParameterivATI(GL_BUMP_TEX_UNITS_ATI, units);
 222         found_unit_1 = GL_FALSE;
 223         for (i = 0; i < num_units; i++) {
 224                 if (units[i] < GL_TEXTURE0) {
 225                         printf("Bad unit in GL_BUMP_TEX_UNITS_ATI: 0x%x\n",
 226                                units[i]);
 227                         piglit_report_result(PIGLIT_FAIL);
 228                 }
 229                 if (units[i] == GL_TEXTURE1)
 230                         found_unit_1 = GL_TRUE;
 231         }
 232         free(units);
 233
 234         if (!found_unit_1) {
 235                 printf("Implementation doesn't support bumpmapping unit 1.\n");
 236                 piglit_report_result(PIGLIT_SKIP);
 237         }
 238
 239         tex_unit = GL_TEXTURE0;
 240         bump_unit = GL_TEXTURE1;
 241 }