tests/shaders/attribute0.c

   1 /*
   2  * Copyright © 2010, 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 DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 /**
  25  * \file attribute0.c
  26  * Verify that applications can use attribute 0 with a user-defined attribute
  27  * instead of using gl_Vertex.
  28  */
  29
  30 #include "piglit-util-gl.h"
  31
  32 PIGLIT_GL_TEST_CONFIG_BEGIN
  33
  34         config.supports_gl_compat_version = 10;
  35
  36         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  37
  38 PIGLIT_GL_TEST_CONFIG_END
  39
  40 static const char vs_text[] =
  41         "attribute vec4 vertex;\n"
  42         "void main() { gl_Position = vertex; }\n"
  43         ;
  44
  45 static const char fs_text[] =
  46         "void main() { gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0); }\n"
  47         ;
  48
  49 static GLuint prog;
  50
  51 static const float green[] = { 0.0, 1.0, 0.0, 1.0 };
  52 static const float blue[] = { 0.0, 0.0, 1.0, 1.0 };
  53
  54 enum piglit_result
  55 piglit_display(void)
  56 {
  57         GLboolean pass = GL_TRUE;
  58
  59         glClear(GL_COLOR_BUFFER_BIT);
  60
  61         piglit_draw_rect(-1.0, -1.0, 1.0, 2.0);
  62
  63         pass &= piglit_probe_pixel_rgb(piglit_width / 4, piglit_height / 2,
  64                                        green);
  65         pass &= piglit_probe_pixel_rgb(piglit_width * 3 / 4, piglit_height / 2,
  66                                        blue);
  67
  68         assert(!glGetError());
  69
  70         piglit_present_results();
  71
  72         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
  73 }
  74
  75 void
  76 piglit_init(int argc, char **argv)
  77 {
  78         GLuint vs;
  79         GLuint fs;
  80         GLboolean ok;
  81
  82         piglit_require_vertex_shader();
  83         piglit_require_fragment_shader();
  84
  85         vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_text);
  86         fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_text);
  87         prog = piglit_link_simple_program(vs, fs);
  88
  89         glBindAttribLocation(prog, 0, "vertex");
  90         glLinkProgram(prog);
  91         ok = piglit_link_check_status(prog);
  92         if (!ok)
  93                 piglit_report_result(PIGLIT_FAIL);
  94
  95         glUseProgram(prog);
  96
  97         glClearColor(blue[0], blue[1], blue[2], blue[3]);
  98 }