tests/spec/arb_draw_indirect/draw-arrays-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 glDrawArraysIndirect 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-arrays.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 GLuint indirect_data[] = {
  56         3,              /* count */
  57         1,              /* primcount */
  58         0,              /* first vertex */
  59         0,              /* mbz */
  60 };
  61
  62 enum piglit_result
  63 piglit_display(void)
  64 {
  65         bool pass = true;
  66
  67         glViewport(0, 0, 128, 128);
  68
  69         glClearColor(0,0,1,1);
  70         glClear(GL_COLOR_BUFFER_BIT);
  71
  72         glBindVertexArray(vao);
  73         glUseProgram(prog);
  74
  75         glDrawArraysIndirect(GL_TRIANGLES, indirect_data);
  76
  77         glUseProgram(0);
  78
  79         piglit_present_results();
  80
  81         pass = piglit_probe_pixel_rgb(32, 32, red) && pass;
  82         pass = piglit_probe_pixel_rgb(96, 96, blue) && pass;
  83
  84         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
  85 }
  86
  87 void
  88 piglit_init(int argc, char **argv)
  89 {
  90         GLuint vertices_bo;
  91
  92         piglit_require_extension("GL_ARB_draw_indirect");
  93
  94         glGenVertexArrays(1, &vao);
  95         glBindVertexArray(vao);
  96
  97         glGenBuffers(1, &vertices_bo);
  98         glBindBuffer(GL_ARRAY_BUFFER, vertices_bo);
  99         glBufferData(GL_ARRAY_BUFFER, sizeof(vertices_data), vertices_data, GL_STATIC_DRAW);
 100         glEnableVertexAttribArray(0);
 101         glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, 0);
 102
 103         prog = piglit_build_simple_program(
 104                         "#version 130\n"
 105                         "#extension GL_ARB_explicit_attrib_location: require\n"
 106                         "\n"
 107                         "layout(location=0) in vec2 pos;\n"
 108                         "\n"
 109                         "void main() {\n"
 110                         "       gl_Position = vec4(pos, 0, 1);\n"
 111                         "}\n",
 112
 113                         "#version 130\n"
 114                         "\n"
 115                         "void main() {\n"
 116                         "       gl_FragColor = vec4(1,0,0,1);\n"
 117                         "}\n");
 118
 119         glBindVertexArray(0);
 120 }