tests/spec/arb_transform_feedback2/cannot-bind-when-active.c

   1 /*
   2  * Copyright © 2012 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
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   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  * \file cannot-bind-when-active.c
  26  *
  27  * The ARB_transform_feedback2 spec says:
  28  *
  29  *     "The error INVALID_OPERATION is generated by BindTransformFeedback if
  30  *     the transform feedback operation is active on the currently bound
  31  *     transform feedback object, and that operation is not paused (as
  32  *     described below)."
  33  */
  34
  35 #include "piglit-util-gl.h"
  36
  37 PIGLIT_GL_TEST_CONFIG_BEGIN
  38
  39         config.supports_gl_compat_version = 10;
  40         config.window_visual = PIGLIT_GL_VISUAL_RGB;
  41         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  42
  43 PIGLIT_GL_TEST_CONFIG_END
  44
  45 enum piglit_result
  46 piglit_display(void)
  47 {
  48         return PIGLIT_FAIL;
  49 }
  50
  51 static const char vstext[] =
  52         "varying vec4 x; void main() { gl_Position = vec4(0); x = vec4(0); }";
  53
  54 void piglit_init(int argc, char **argv)
  55 {
  56         GLuint ids[2];
  57         GLuint prog;
  58         GLuint vs;
  59         GLuint buf;
  60         bool pass = true;
  61         static const char *varyings[] = {"x"};
  62
  63         piglit_require_vertex_shader();
  64         piglit_require_transform_feedback();
  65         piglit_require_extension("GL_ARB_transform_feedback2");
  66
  67         /* This is all just the boot-strap work for the test.
  68          */
  69         glGenBuffers(1, &buf);
  70         glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, buf);
  71         glBufferData(GL_TRANSFORM_FEEDBACK_BUFFER, 1024, NULL, GL_STREAM_READ);
  72
  73         vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vstext);
  74         prog = glCreateProgram();
  75         glAttachShader(prog, vs);
  76
  77         glTransformFeedbackVaryings(prog, 1, varyings,
  78                                     GL_INTERLEAVED_ATTRIBS);
  79         glLinkProgram(prog);
  80         if (!piglit_link_check_status(prog)) {
  81                 pass = false;
  82                 goto done;
  83         }
  84
  85         glUseProgram(prog);
  86
  87         glGenTransformFeedbacks(2, ids);
  88
  89         glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, ids[0]);
  90         glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER, 0, buf);
  91
  92         glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, ids[1]);
  93         glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER, 0, buf);
  94
  95         glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, 0);
  96
  97         /* Bind the first object and make it active.  Try to bind the other
  98          * object.  This should fail.
  99          */
 100         glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, ids[0]);
 101         glBeginTransformFeedback(GL_TRIANGLES);
 102
 103         pass = piglit_check_gl_error(0) && pass;
 104
 105         if (!piglit_khr_no_error) {
 106                 glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, ids[1]);
 107                 pass = piglit_check_gl_error(GL_INVALID_OPERATION) && pass;
 108         }
 109
 110         /* Make the transform feedback object inactive by calling
 111          * EndTransformFeedback.  Then try (again) to bind the other object.
 112          * This should just work.
 113          */
 114         glEndTransformFeedback();
 115         glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, ids[1]);
 116         pass = piglit_check_gl_error(0) && pass;
 117
 118         /* Make the second object active, and pause it.  Try rebinding the
 119          * first object.  This should also just work.
 120          */
 121         glBeginTransformFeedback(GL_TRIANGLES);
 122         glPauseTransformFeedback();
 123
 124         glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, ids[0]);
 125         pass = piglit_check_gl_error(0) && pass;
 126
 127         /* Rebind the second object, and resume it.  This will make it active.
 128          * Re-rebind the first object.  This should fail.
 129          */
 130         glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, ids[1]);
 131         pass = piglit_check_gl_error(0) && pass;
 132
 133         glResumeTransformFeedback();
 134         pass = piglit_check_gl_error(0) && pass;
 135
 136         if (!piglit_khr_no_error) {
 137                 glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, ids[0]);
 138                 pass = piglit_check_gl_error(GL_INVALID_OPERATION) && pass;
 139         }
 140
 141         /* Make the second object non-active, and restore the default object.
 142          * This should work.
 143          */
 144         glEndTransformFeedback();
 145         glBindTransformFeedback(GL_TRANSFORM_FEEDBACK, 0);
 146         pass = piglit_check_gl_error(0) && pass;
 147
 148 done:
 149         glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER, 0);
 150         glDeleteBuffers(1, &buf);
 151
 152         glDeleteTransformFeedbacks(2, ids);
 153
 154         glUseProgram(0);
 155         glDeleteShader(vs);
 156         glDeleteProgram(prog);
 157
 158         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
 159 }