tests/spec/arb_direct_state_access/texunits.c

   1 /*
   2  * Copyright (c) VMware, 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  * 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  * THE AUTHORS 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  * @file
  26  * Test texture unit state with respect to the different number of
  27  * texture coord units, image units, combined units, etc.
  28  */
  29 #include "piglit-util-gl.h"
  30
  31 PIGLIT_GL_TEST_CONFIG_BEGIN
  32
  33         config.supports_gl_core_version = 31;
  34         config.supports_gl_compat_version = 20;
  35
  36         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  37         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  38
  39 PIGLIT_GL_TEST_CONFIG_END
  40
  41 #define MAX_UNITS 256
  42
  43 /** random number for checking state */
  44 static GLfloat Random[MAX_UNITS][4];
  45
  46 static GLint MaxTextureCoordUnits;
  47 static GLint MaxTextureVertexUnits;
  48 static GLint MaxTextureImageUnits;
  49 static GLint MaxTextureCombinedUnits;
  50
  51
  52 static void
  53 generate_random_numbers(void)
  54 {
  55    int i, j;
  56    for (i = 0; i < ARRAY_SIZE(Random); i++) {
  57       for (j = 0; j < 4; j++) {
  58          /* values in [0, 1] */
  59          Random[i][j] = (rand() % 1000) * .001;
  60       }
  61    }
  62 }
  63
  64
  65 static bool
  66 equal4v(const GLfloat v1[4], const GLfloat v2[4])
  67 {
  68    return (v1[0] == v2[0] &&
  69            v1[1] == v2[1] &&
  70            v1[2] == v2[2] &&
  71            v1[3] == v2[3]);
  72 }
  73
  74
  75 static void
  76 report4v(const GLfloat exp[4], const GLfloat act[4])
  77 {
  78    printf("Expected (%g, %g, %g, %g) but found (%g, %g, %g, %g)\n",
  79           exp[0], exp[1], exp[2], exp[3],
  80           act[0], act[1], act[2], act[3]);
  81 }
  82
  83
  84 static bool
  85 test_texture_params(void)
  86 {
  87    GLuint tex[MAX_UNITS];
  88    int i;
  89    int maxUnit;
  90
  91    piglit_reset_gl_error();
  92
  93    glCreateTextures(GL_TEXTURE_2D, MaxTextureCombinedUnits, tex);
  94
  95    /* set per-unit state */
  96    for (i = 0; i < MaxTextureCombinedUnits; i++) {
  97       glBindTextureUnit(i, tex[i]);
  98       glTextureParameterfv(tex[i], GL_TEXTURE_BORDER_COLOR, Random[i]);
  99    }
 100
 101    /* check per-unit state */
 102    for (i = 0; i < MaxTextureCombinedUnits; i++) {
 103       GLfloat v[4];
 104       glBindTextureUnit(i, tex[i]);
 105       /* any per-unit state will do: */
 106       glGetTextureParameterfv(tex[i], GL_TEXTURE_BORDER_COLOR, v);
 107       if (!equal4v(v, Random[i])) {
 108          printf("Setting per-unit param state failed for unit %d\n", i);
 109          report4v(Random[i], v);
 110          return false;
 111       }
 112    }
 113
 114    /* there should be no errors at this point */
 115    if (!piglit_check_gl_error(GL_NO_ERROR)) {
 116       return false;
 117    }
 118
 119    maxUnit = MAX2(MaxTextureCombinedUnits, MaxTextureCoordUnits);
 120
 121    /* This should generate an error.  The GL_ARB_direct_state_access extension
 122     * isn't explicit about which error should be generated, but the typical
 123     * error for a out-of-range int/uint is GL_INVALID_VALUE.  That's what
 124     * NVIDIA's driver does.
 125     */
 126    if (!piglit_khr_no_error) {
 127       glBindTextureUnit(maxUnit, tex[0]);
 128       if (!piglit_check_gl_error(GL_INVALID_VALUE)) {
 129          return false;
 130       }
 131    }
 132
 133    return true;
 134 }
 135
 136
 137 static void
 138 report_info(void)
 139 {
 140    printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
 141    printf("GL_MAX_TEXTURE_COORDS = %d\n", MaxTextureCoordUnits);
 142    printf("GL_MAX_TEXTURE_IMAGE_UNITS = %d\n", MaxTextureImageUnits);
 143    printf("GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS = %d\n", MaxTextureVertexUnits);
 144    printf("GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS = %d\n", MaxTextureCombinedUnits);
 145 }
 146
 147
 148 enum piglit_result
 149 piglit_display(void)
 150 {
 151         bool pass = true;
 152
 153         pass = test_texture_params() && pass;
 154
 155         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 156 }
 157
 158
 159 void
 160 piglit_init(int argc, char *argv[])
 161 {
 162    piglit_require_extension("GL_ARB_direct_state_access");
 163
 164    glGetIntegerv(GL_MAX_TEXTURE_COORDS, &MaxTextureCoordUnits);
 165    glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &MaxTextureImageUnits);
 166    glGetIntegerv(GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, &MaxTextureVertexUnits);
 167    glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &MaxTextureCombinedUnits);
 168
 169    report_info();
 170
 171    if (MaxTextureCombinedUnits > MAX_UNITS) {
 172       /* Need to increase the MAX_UNITS limit */
 173       piglit_report_result(PIGLIT_WARN);
 174    }
 175
 176    generate_random_numbers();
 177 }