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