tests/spec/arb_texture_view/rendering_target.c

   1 /*
   2  * Copyright © 2013 LunarG, Inc.
   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  * Author: Jon Ashburn <jon@lunarg.com>
  24  */
  25
  26 /**
  27  * Tests GL_ARB_texture_view rendering with various texture targets.
  28  * Creates texture maps with different  solid colors for each level or layer
  29  * reads the framebuffer to ensure the rendered color is correct.
  30  */
  31
  32 #include "piglit-util-gl.h"
  33 #include "common.h"
  34
  35 PIGLIT_GL_TEST_CONFIG_BEGIN
  36
  37         config.supports_gl_compat_version = 30;
  38         config.supports_gl_es_version = 31;
  39
  40         config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
  41         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  42
  43 PIGLIT_GL_TEST_CONFIG_END
  44
  45 static const char *TestName = "arb_texture_view-rendering-target";
  46 static int prog3D, prog2Darray, prog2D, prog1D;
  47
  48 /**
  49  * Simple views  of textures; test rendering with various texture view targets
  50  */
  51 static bool
  52 test_render_with_targets(GLenum target)
  53 {
  54         GLuint tex, newTex;
  55         GLint width = 128, height = 64, depth = 4, levels = 8;
  56         GLint l;
  57         bool pass = true;
  58
  59         glGenTextures(1, &tex);
  60         glBindTexture(target, tex);
  61
  62         switch (target) {
  63         case GL_TEXTURE_1D:
  64                 glTexStorage1D(target, levels, GL_RGBA8, width);
  65                 height = 1;
  66                 depth = 1;
  67                 break;
  68         case GL_TEXTURE_2D:
  69                 glTexStorage2D(target, levels, GL_RGBA8, width, height);
  70                 depth = 1;
  71                 break;
  72         case GL_TEXTURE_3D:
  73         case GL_TEXTURE_2D_ARRAY:
  74                 glTexStorage3D(target, levels, GL_RGBA8, width, height, depth);
  75                 break;
  76         default:
  77                 /* only handle subset of legal targets */
  78                 piglit_report_result(PIGLIT_FAIL);
  79                 assert(!"Illegal target for test_render_with_targets()\n");
  80                 break;
  81         }
  82
  83         /* load each mipmap with a different color texture */
  84         for (l = 0; l < levels; l++) {
  85                 GLubyte *buf = create_solid_image(width, height, depth, 4, l);
  86
  87                 if (buf != NULL) {
  88                         switch(target) {
  89                         case GL_TEXTURE_1D:
  90                                 glTexSubImage1D(GL_TEXTURE_1D, l, 0, width,
  91                                                 GL_RGBA, GL_UNSIGNED_BYTE, buf);
  92                                 break;
  93                         case GL_TEXTURE_2D:
  94                                 glTexSubImage2D(GL_TEXTURE_2D, l, 0, 0, width,
  95                                                 height, GL_RGBA,
  96                                                 GL_UNSIGNED_BYTE, buf);
  97                                 break;
  98                         case GL_TEXTURE_3D:
  99                         case GL_TEXTURE_2D_ARRAY:
 100                                 glTexSubImage3D(target, l, 0, 0, 0, width,
 101                                                 height, depth, GL_RGBA,
 102                                                 GL_UNSIGNED_BYTE, buf);
 103                                 break;
 104                         }
 105                         free(buf);
 106                 } else {
 107                         piglit_report_result(PIGLIT_FAIL);
 108                         assert(!"create_solid_image() failed\n");
 109                 }
 110
 111                 if (width > 1)
 112                         width /= 2;
 113                 if (height > 1)
 114                         height /= 2;
 115                 if (depth > 1 && target == GL_TEXTURE_3D)
 116                         depth /= 2;
 117         }
 118
 119         if (piglit_check_gl_error(GL_NO_ERROR) == GL_FALSE) {
 120                 printf("%s: Found gl errors prior to testing glTextureView\n",
 121                                    TestName);
 122                 glDeleteTextures(1, &tex);
 123
 124                 return false;
 125         }
 126
 127         /* create view of texture and bind it to target */
 128         glGenTextures(1, &newTex);
 129         glTextureView(newTex, target, tex,  GL_RGBA8, 0, levels, 0, 1);
 130         glDeleteTextures(1, &tex);
 131         pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
 132         glActiveTexture(GL_TEXTURE0);
 133         glBindTexture(target, newTex);
 134
 135         /* draw a quad/line using each texture mipmap level */
 136         glTexParameteri(target, GL_TEXTURE_MIN_FILTER,
 137                         GL_NEAREST_MIPMAP_NEAREST);
 138         glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 139         for (l = 0; l < levels; l++) {
 140                 GLfloat expected[4];
 141                 int p;
 142
 143                 glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, l);
 144                 glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, l);
 145
 146                 glClear(GL_COLOR_BUFFER_BIT);
 147
 148                 switch (target) {
 149                 case GL_TEXTURE_1D:
 150                         glUseProgram(prog1D);
 151                         piglit_draw_rect_tex(-1.0, -1.0, 2.0, 2.0, 0.0, 0.0,
 152                                              1.0, 1.0);
 153                         break;
 154                 case GL_TEXTURE_2D:
 155                         glUseProgram(prog2D);
 156                         piglit_draw_rect_tex(-1.0, -1.0, 2.0, 2.0, 0.0, 0.0,
 157                                              1.0, 1.0);
 158                         break;
 159                 case GL_TEXTURE_2D_ARRAY:
 160                         glUseProgram(prog2Darray);
 161                         draw_3d_depth(-1.0, -1.0, 2.0, 2.0, l);
 162                         break;
 163                 case GL_TEXTURE_3D:
 164                         glUseProgram(prog3D);
 165                         draw_3d_depth(-1.0, -1.0, 2.0, 2.0, l);
 166                         break;
 167                 }
 168
 169                 expected[0] = Colors[l][0] / 255.0;
 170                 expected[1] = Colors[l][1] / 255.0;
 171                 expected[2] = Colors[l][2] / 255.0;
 172                 expected[3] = 1.0;
 173
 174                 p = piglit_probe_pixel_rgba(piglit_width/2, piglit_height/2,
 175                                             expected);
 176
 177                 piglit_present_results();
 178
 179 #if 0           /* debug */
 180                 printf("for level=%d, target=%s, expected color=%f %f %f\n",
 181                            l, piglit_get_gl_enum_name(target), expected[0],
 182                                    expected[1], expected[2]);
 183                 sleep(1);
 184 #endif
 185
 186                 if (!p) {
 187                         printf("%s: wrong color for mipmap level %d\n",
 188                                TestName, l);
 189                         pass = false;
 190                 }
 191         }
 192         glDeleteTextures(1, &newTex);
 193
 194         return pass;
 195 }
 196
 197 #define X(f, desc)                                              \
 198         do {                                                    \
 199                 const bool subtest_pass = (f);                  \
 200                 piglit_report_subtest_result(subtest_pass       \
 201                                              ? PIGLIT_PASS : PIGLIT_FAIL, \
 202                                              (desc));           \
 203                 pass = pass && subtest_pass;                    \
 204         } while (0)
 205
 206 enum piglit_result
 207 piglit_display(void)
 208 {
 209         bool pass = true;
 210 #ifdef PIGLIT_USE_OPENGL
 211         X(test_render_with_targets(GL_TEXTURE_1D), "1D view rendering");
 212 #endif
 213         X(test_render_with_targets(GL_TEXTURE_2D), "2D view rendering");
 214         X(test_render_with_targets(GL_TEXTURE_3D), "3D view rendering");
 215         X(test_render_with_targets(GL_TEXTURE_2D_ARRAY),
 216           "2D Array view rendering");
 217 #undef X
 218         pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
 219         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 220 }
 221
 222 #ifdef PIGLIT_USE_OPENGL
 223 #define GLSL_VERSION "130"
 224 #else
 225 #define GLSL_VERSION "310 es"
 226 #endif
 227
 228 static const char *vs =
 229         "#version " GLSL_VERSION "\n"
 230         "in vec4 piglit_vertex;\n"
 231         "in vec2 piglit_texcoord;\n"
 232         "out vec3 texcoord;\n"
 233         "void main() { \n"
 234         "       gl_Position = vec4(piglit_vertex.xy, 0.0, 1.0);\n"
 235         "       texcoord = vec3(piglit_texcoord, piglit_vertex.z);\n"
 236         "}\n";
 237
 238 static const char *fs_3d =
 239         "#version " GLSL_VERSION "\n"
 240         "#ifdef GL_ES\n"
 241         "precision highp float;\n"
 242         "precision highp sampler3D;\n"
 243         "#endif\n"
 244         "in vec3 texcoord;\n"
 245         "uniform sampler3D tex;\n"
 246         "out vec4 color;\n"
 247         "void main() { \n"
 248         "       color = vec4(texture(tex, texcoord).xyz, 1.0);\n"
 249         "}\n";
 250
 251 static const char *fs_2darray =
 252         "#version " GLSL_VERSION "\n"
 253         "#ifdef GL_ES\n"
 254         "precision highp float;\n"
 255         "precision highp sampler2DArray;\n"
 256         "#endif\n"
 257         "in vec3 texcoord;\n"
 258         "uniform sampler2DArray tex;\n"
 259         "out vec4 color;\n"
 260         "void main() { \n"
 261         "       color = vec4(texture(tex, texcoord).xyz, 1.0);\n"
 262         "}\n";
 263
 264 static const char *fs_2d =
 265         "#version " GLSL_VERSION "\n"
 266         "#ifdef GL_ES\n"
 267         "precision highp float;\n"
 268         "precision highp sampler2D;\n"
 269         "#endif\n"
 270         "in vec3 texcoord;\n"
 271         "uniform sampler2D tex;\n"
 272         "out vec4 color;\n"
 273         "void main() { \n"
 274         "       color = vec4(texture(tex, texcoord.xy).xyz, 1.0);\n"
 275         "}\n";
 276
 277 #ifdef PIGLIT_USE_OPENGL
 278 static const char *fs_1d =
 279         "#version " GLSL_VERSION "\n"
 280         "in vec3 texcoord;\n"
 281         "uniform sampler1D tex;\n"
 282         "out vec4 color;\n"
 283         "void main() { \n"
 284         "       color = vec4(texture(tex, texcoord.x).xyz, 1.0);\n"
 285         "}\n";
 286 #endif
 287
 288 void
 289 piglit_init(int argc, char **argv)
 290 {
 291 #ifdef PIGLIT_USE_OPENGL
 292         piglit_require_extension("GL_ARB_texture_storage");
 293         piglit_require_extension("GL_ARB_texture_view");
 294         piglit_require_extension("GL_EXT_texture_array");
 295 #else
 296         piglit_require_extension("GL_OES_texture_view");
 297 #endif
 298
 299         prog3D = piglit_build_simple_program(vs, fs_3d);
 300         prog2Darray = piglit_build_simple_program(vs, fs_2darray);
 301         prog2D = piglit_build_simple_program(vs, fs_2d);
 302
 303 #ifdef PIGLIT_USE_OPENGL
 304         prog1D = piglit_build_simple_program(vs, fs_1d);
 305 #endif
 306 }