tests/general/bgra-sec-color-pointer.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  * Authors:
  24  *    Ben Holmes <shranzel@hotmail.com>
  25  */
  26
  27 /*
  28  * this test draws quads with RGBA and BGRA formats using
  29  * glSecondaryColorPointer. Two quads are drawn without blending and two
  30  * with alpha blending.
  31  */
  32
  33 #include "piglit-util.h"
  34
  35 int piglit_width = 400, piglit_height = 300;
  36 int piglit_window_mode = GLUT_RGB | GLUT_ALPHA | GLUT_DOUBLE;
  37
  38 static GLfloat verts[12] = {225.0, 175.0, 0.0,
  39                                 225.0, 225.0, 0.0,
  40                                 175.0, 175.0, 0.0,
  41                                 175.0, 225.0, 0.0};
  42
  43
  44 static GLubyte colors[16] = {255, 0, 0, 127,
  45                                 255, 0, 0, 127,
  46                                 255, 0, 0, 127,
  47                                 255, 0, 0, 127};
  48
  49
  50 void
  51 piglit_init(int argc, char **argv)
  52 {
  53         if (!GLEW_VERSION_1_4) {
  54                 printf("Requires OpenGL 1.4\n");
  55                 piglit_report_result(PIGLIT_SKIP);
  56         }
  57
  58         piglit_require_extension("GL_EXT_vertex_array_bgra");
  59
  60         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
  61
  62         glEnable(GL_COLOR_SUM);
  63         glColor3f(0.0, 0.0, 0.0);
  64
  65         glClearColor(0.6, 0.6, 0.6, 1.0);
  66 }
  67
  68 enum piglit_result
  69 piglit_display(void)
  70 {
  71         GLboolean pass = GL_TRUE;
  72         GLfloat red[3]={1.0, 0.0, 0.0};
  73         GLfloat blue[3]={0.0, 0.0, 1.0};
  74         GLfloat greyRed[3]={1.0, 0.6, 0.6};
  75         GLfloat greyBlue[3]={0.6, 0.6, 1.0};
  76
  77         glClear(GL_COLOR_BUFFER_BIT);
  78
  79         glEnableClientState(GL_VERTEX_ARRAY);
  80         glEnableClientState(GL_SECONDARY_COLOR_ARRAY);
  81
  82         glSecondaryColorPointer(3, GL_UNSIGNED_BYTE, 4, colors);
  83         glVertexPointer(3, GL_FLOAT, 0, verts);
  84         glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
  85
  86         glPushMatrix();
  87         glTranslatef(75.0, 0.0, 0.0);
  88
  89         glSecondaryColorPointer(GL_BGRA, GL_UNSIGNED_BYTE, 0, colors);
  90         glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
  91
  92         glPopMatrix();
  93
  94         glEnable(GL_BLEND);
  95         glBlendFunc(GL_SRC_ALPHA, GL_ONE);
  96
  97         glPushMatrix();
  98         glTranslatef(0.0, -75.0, 0.0);
  99
 100         glSecondaryColorPointer(3, GL_UNSIGNED_BYTE, 4, colors);
 101         glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 102
 103         glPushMatrix();
 104         glTranslatef(75.0, 0.0, 0.0);
 105
 106         glSecondaryColorPointer(GL_BGRA, GL_UNSIGNED_BYTE, 0, colors);
 107         glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 108
 109         glPopMatrix();
 110         glPopMatrix();
 111
 112         pass = pass && piglit_probe_pixel_rgb(200, 200, red);
 113         pass = pass && piglit_probe_pixel_rgb(275, 200, blue);
 114         pass = pass && piglit_probe_pixel_rgb(200, 125, greyRed);
 115         pass = pass && piglit_probe_pixel_rgb(275, 125, greyBlue);
 116
 117         glFinish();
 118         glutSwapBuffers();
 119
 120         glDisable(GL_BLEND);
 121         glDisableClientState(GL_SECONDARY_COLOR_ARRAY);
 122         glDisableClientState(GL_VERTEX_ARRAY);
 123
 124         return pass ? PIGLIT_SUCCESS : PIGLIT_FAILURE;
 125 }