tests/spec/nv_conditional_render/generatemipmap.c

   1 /*
   2  * Copyright © 2011 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 #include "piglit-util-gl.h"
  25
  26 /**
  27  * @file generatemipmap.c
  28  *
  29  * Tests that conditional rendering does not affect glGenerateMipmap().
  30  *
  31  * It's something that would be likely to be implemented through
  32  * normal rendering inside of the driver, and thus easy to
  33  * accidentally disable during conditional rendering.
  34  */
  35
  36 PIGLIT_GL_TEST_CONFIG_BEGIN
  37
  38         config.supports_gl_compat_version = 10;
  39         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
  40         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  41         /* Note that this must be half of the texture size,
  42          * see comments in the test
  43          */
  44         config.window_width = 32;
  45         config.window_height = 32;
  46
  47 PIGLIT_GL_TEST_CONFIG_END
  48
  49 static void
  50 fill_level(int level, int size, const GLfloat *color)
  51 {
  52         GLfloat *data;
  53         int i;
  54
  55         data = malloc(size * size * 4 * sizeof(GLfloat));
  56         for (i = 0; i < 4 * size * size; i += 4) {
  57                 data[i + 0] = color[0];
  58                 data[i + 1] = color[1];
  59                 data[i + 2] = color[2];
  60                 data[i + 3] = color[3];
  61         }
  62         glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, size, size, 0,
  63                      GL_RGBA, GL_FLOAT, data);
  64         free(data);
  65 }
  66
  67 enum piglit_result
  68 piglit_display(void)
  69 {
  70         bool pass = true;
  71         float red[4] = {1.0, 0.0, 0.0, 0.0};
  72         float green[4] = {0.0, 1.0, 0.0, 0.0};
  73         GLuint q, texture;
  74         int tex_size = 64;
  75         int i;
  76
  77         glClearColor(0.5, 0.5, 0.5, 0.5);
  78         glClear(GL_COLOR_BUFFER_BIT);
  79
  80         /* Set up a texture object with green at level 0, red elsewhere */
  81         glGenTextures(1, &texture);
  82         glBindTexture(GL_TEXTURE_2D, texture);
  83
  84         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
  85         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
  86         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
  87         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
  88                         GL_LINEAR_MIPMAP_NEAREST);
  89         glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
  90
  91         for (i = 0; tex_size / (1 << i) > 0; i++)
  92                 fill_level(i, tex_size / (1 << i), i == 0 ? green : red);
  93
  94         glGenQueries(1, &q);
  95
  96         /* Generate query fail. */
  97         glBeginQuery(GL_SAMPLES_PASSED, q);
  98         glEndQuery(GL_SAMPLES_PASSED);
  99
 100         /* Mipmap generation should not be affected by conditional rendering. */
 101         glBeginConditionalRenderNV(q, GL_QUERY_WAIT_NV);
 102         glGenerateMipmapEXT(GL_TEXTURE_2D);
 103         glEndConditionalRenderNV();
 104
 105         /* This should draw level 1, since starting window size is 32
 106          * and texture is 64.
 107          */
 108         glEnable(GL_TEXTURE_2D);
 109         piglit_draw_rect_tex(-1, -1, 2, 2,
 110                              0, 0, 1, 1);
 111         glDisable(GL_TEXTURE_2D);
 112
 113         pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height,
 114                                       green);
 115
 116         piglit_present_results();
 117
 118         glDeleteQueries(1, &q);
 119
 120         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 121 }
 122
 123 void
 124 piglit_init(int argc, char **argv)
 125 {
 126         piglit_require_gl_version(20);
 127
 128         piglit_require_extension("GL_NV_conditional_render");
 129         piglit_require_extension("GL_EXT_framebuffer_object");
 130 }