tests/spec/arb_vertex_buffer_object/map-after-draw.c

   1 /*
   2  * Copyright © 2009 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  * author: Ben Holmes
  26  *
  27  * Map vbo after drawing from it.
  28  *
  29  * https://bugs.freedesktop.org/show_bug.cgi?id=22540
  30  */
  31
  32 #include "piglit-util-gl.h"
  33
  34 PIGLIT_GL_TEST_CONFIG_BEGIN
  35
  36         config.supports_gl_compat_version = 10;
  37
  38         config.window_width = 400;
  39         config.window_height = 300;
  40         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGB;
  41         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  42
  43 PIGLIT_GL_TEST_CONFIG_END
  44
  45 static GLuint vBuffer;
  46
  47 static void
  48 Init(void)
  49 {
  50         piglit_require_extension("GL_ARB_vertex_buffer_object");
  51         glMatrixMode(GL_PROJECTION);
  52         glPushMatrix();
  53         glLoadIdentity();
  54         glOrtho(0, 400, 0, 300, -1, 1);
  55
  56         glMatrixMode(GL_MODELVIEW);
  57         glPushMatrix();
  58         glLoadIdentity();
  59 }
  60
  61 static void
  62 vboInit(void)
  63 {
  64         static const GLfloat vArray[12] = {
  65                 225, 125, 0,
  66                 225, 175, 0,
  67                 175, 125, 0,
  68                 175, 175, 0
  69         };
  70         glGenBuffersARB(1, &vBuffer);
  71         glBindBufferARB(GL_ARRAY_BUFFER_ARB, vBuffer);
  72         glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(vArray),
  73                         vArray, GL_STATIC_DRAW_ARB);
  74
  75 }
  76
  77 static GLboolean
  78 vboMap(void)
  79 {
  80         (void) glMapBufferARB(GL_ARRAY_BUFFER_ARB, GL_READ_WRITE_ARB);
  81         glUnmapBufferARB(GL_ARRAY_BUFFER_ARB);
  82         return (glGetError() == 0);
  83 }
  84
  85 enum piglit_result
  86 piglit_display(void)
  87 {
  88         GLfloat gray[3] = {0.5, 0.5, 0.5};
  89         GLboolean pass;
  90
  91         glBindBufferARB(GL_ARRAY_BUFFER_ARB, vBuffer);
  92         glEnableClientState(GL_VERTEX_ARRAY);
  93         glVertexPointer(3, GL_FLOAT, 0 ,0);
  94
  95         glColor3f(0.5, 0.5, 0.5);
  96         glClear(GL_COLOR_BUFFER_BIT);
  97         glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
  98
  99         pass = vboMap();
 100         pass = pass && piglit_probe_pixel_rgb(200, 150, gray);
 101
 102         glFinish();
 103         piglit_present_results();
 104
 105         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 106 }
 107
 108 void
 109 piglit_init(int argc, char  **argv)
 110 {
 111         Init();
 112         vboInit();
 113 }