tests/spec/arb_transform_feedback3/begin_end.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 #include "piglit-util-gl.h"
  25 #include "xfb3_common.h"
  26
  27 /**
  28  * @file begin_end.c
  29  *
  30  * This tests for a bug in the gallium state tracker which asserted with
  31  * state_tracker/st_cb_xformfb.c:194: st_transform_feedback_get_draw_target: Assertion `0' failed.
  32  * This was being hit by ogl conform as well.
  33  */
  34
  35 PIGLIT_GL_TEST_CONFIG_BEGIN
  36
  37         config.supports_gl_compat_version = 32;
  38         config.supports_gl_core_version = 32;
  39         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  40
  41 PIGLIT_GL_TEST_CONFIG_END
  42
  43 void
  44 piglit_init(int argc, char **argv)
  45 {
  46         bool pass = true;
  47         GLuint prog;
  48         GLint max_attrib_n;
  49         GLuint buffer;
  50         const char * outputVaryings[] = {"gl_Position"};
  51         piglit_require_extension("GL_ARB_transform_feedback3");
  52
  53         glGetIntegerv(GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS,
  54                 &max_attrib_n);
  55         if (!max_attrib_n) {
  56                 printf("Maximum number of separete attributes is zero\n");
  57                 piglit_report_result(PIGLIT_FAIL);
  58         }
  59
  60         prog = piglit_build_simple_program_multiple_shaders(
  61                             GL_VERTEX_SHADER, vs_pass_thru_text, 0);
  62         glTransformFeedbackVaryings(prog, 1, &outputVaryings[0], GL_INTERLEAVED_ATTRIBS);
  63         glLinkProgram(prog);
  64         glUseProgram(prog);
  65
  66         glGenBuffers(1, &buffer);
  67         glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER, 0, buffer);
  68         glBeginTransformFeedback(GL_POINTS);
  69         glEndTransformFeedback();
  70
  71         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
  72 }
  73
  74 enum piglit_result
  75 piglit_display(void)
  76 {
  77         /* Should never be reached */
  78         return PIGLIT_FAIL;
  79 }