tests/spec/arb_shader_objects/bindattriblocation-scratch-name.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
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 /**
  25  * \file bindattriblocation-scratch-name.c
  26  * Verify that glBindAttribLocation doesn't keep the applications name pointer.
  27  *
  28  * This reproduces Mesa bugzilla #41499 (bugzilla #41508 is a dup of the same
  29  * issue).
  30  *
  31  * \author Ian Romanick <ian.d.romanick@intel.com>
  32  */
  33
  34 #include "piglit-util-gl.h"
  35
  36 PIGLIT_GL_TEST_CONFIG_BEGIN
  37
  38         config.supports_gl_compat_version = 10;
  39
  40         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  41
  42         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  43
  44 PIGLIT_GL_TEST_CONFIG_END
  45
  46 static const GLchar *vertShaderText =
  47         "attribute vec4 attrib;\n"
  48         "void main() { gl_Position = attrib; }\n";
  49
  50 enum piglit_result
  51 piglit_display(void)
  52 {
  53         return PIGLIT_FAIL;
  54 }
  55
  56 void
  57 piglit_init(int argc, char **argv)
  58 {
  59         static const char name[] = "attrib";
  60         char alt_name[sizeof(name)];
  61         GLint vs;
  62         GLint prog;
  63         GLint attrib_loc;
  64
  65         piglit_require_vertex_shader();
  66
  67         vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vertShaderText);
  68         if (vs == 0) {
  69                 piglit_report_result(PIGLIT_FAIL);
  70         }
  71
  72         prog = glCreateProgram();
  73         glAttachShader(prog, vs);
  74
  75         /* Bind "attrib" to location 3.  Once the attribute is bound, smash
  76          * the string containing the name.  After smashing the name, link the
  77          * shader.  If the implementation kept our name pointer, there will be
  78          * problems linking.
  79          */
  80         memcpy(alt_name, name, sizeof(name));
  81         glBindAttribLocation(prog, 3, alt_name);
  82         memset(alt_name, 0, sizeof(alt_name));
  83         glLinkProgram(prog);
  84
  85         if (!piglit_link_check_status(prog))
  86                 piglit_report_result(PIGLIT_FAIL);
  87
  88         attrib_loc = glGetAttribLocation(prog, "attrib");
  89         if (attrib_loc != 3) {
  90                 fprintf(stderr, "Expected location 3, got location %d\n",
  91                         attrib_loc);
  92                 piglit_report_result(PIGLIT_FAIL);
  93         }
  94
  95         piglit_report_result(PIGLIT_PASS);
  96 }