tests/spec/arb_draw_indirect/draw-elements-prim-restart-ugly.c

   1 /*
   2  * Copyright © 2013 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
  25 /* Basic test of glDrawElementsIndirect interaction with primitive restart,
  26  * with a weird cut index. This requires a fallback on Ivybridge. */
  27
  28 #include "piglit-util-gl.h"
  29
  30 PIGLIT_GL_TEST_CONFIG_BEGIN
  31
  32         config.supports_gl_core_version = 31;
  33
  34         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGB;
  35         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  36
  37 PIGLIT_GL_TEST_CONFIG_END
  38
  39 GLuint vao;
  40 GLint prog;
  41
  42 float red[] = {1,0,0};
  43 float blue[] = {0,0,1};
  44
  45 enum piglit_result
  46 piglit_display(void)
  47 {
  48         bool pass = true;
  49
  50         glViewport(0, 0, 128, 128);
  51
  52         glClearColor(0,0,1,1);
  53         glClear(GL_COLOR_BUFFER_BIT);
  54
  55         glBindVertexArray(vao);
  56         glPrimitiveRestartIndex(42);
  57         glEnable(GL_PRIMITIVE_RESTART);
  58
  59         glUseProgram(prog);
  60
  61         glDrawElementsIndirect(GL_TRIANGLES, GL_UNSIGNED_SHORT, (GLvoid const *)0);
  62
  63         glUseProgram(0);
  64
  65         piglit_present_results();
  66
  67         pass = piglit_probe_pixel_rgb(32, 32, red) && pass;
  68         pass = piglit_probe_pixel_rgb(96, 96, blue) && pass;
  69
  70         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
  71 }
  72
  73 float vertices_data[] = {
  74         -1, -1,
  75          1, -1,
  76         -1,  1,
  77          1,  1,
  78 };
  79
  80 unsigned short indices_data[] = {
  81         3, 1, 42, 0, 1, 2, 0, 42,
  82 };
  83
  84 GLuint indirect_data[] = {
  85         8,              /* count */
  86         1,              /* primcount */
  87         0,              /* first index */
  88         0,              /* base vertex */
  89         0,              /* mbz */
  90 };
  91
  92 void
  93 piglit_init(int argc, char **argv)
  94 {
  95         GLuint vertices_bo;
  96         GLuint indices_bo;
  97         GLuint indirect_bo;
  98
  99         piglit_require_extension("GL_ARB_draw_indirect");
 100
 101         glGenVertexArrays(1, &vao);
 102         glBindVertexArray(vao);
 103
 104         glGenBuffers(1, &vertices_bo);
 105         glBindBuffer(GL_ARRAY_BUFFER, vertices_bo);
 106         glBufferData(GL_ARRAY_BUFFER, sizeof(vertices_data), vertices_data, GL_STATIC_DRAW);
 107         glEnableVertexAttribArray(0);
 108         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, 0);
 109
 110         glGenBuffers(1, &indices_bo);
 111         glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indices_bo);
 112         glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices_data), indices_data, GL_STATIC_DRAW);
 113
 114         glGenBuffers(1, &indirect_bo);
 115         glBindBuffer(GL_DRAW_INDIRECT_BUFFER, indirect_bo);
 116         glBufferData(GL_DRAW_INDIRECT_BUFFER, sizeof(indirect_data), indirect_data, GL_STATIC_DRAW);
 117
 118         prog = piglit_build_simple_program(
 119                         "#version 130\n"
 120                         "#extension GL_ARB_explicit_attrib_location: require\n"
 121                         "\n"
 122                         "layout(location=0) in vec2 pos;\n"
 123                         "\n"
 124                         "void main() {\n"
 125                         "       gl_Position = vec4(pos, 0, 1);\n"
 126                         "}\n",
 127
 128                         "#version 130\n"
 129                         "\n"
 130                         "void main() {\n"
 131                         "       gl_FragColor = vec4(1,0,0,1);\n"
 132                         "}\n");
 133
 134         glBindVertexArray(0);
 135 }