tests/spec/arb_separate_shader_objects/compat-builtins.c

   1 /*
   2  * Copyright © 2015 Intel Corporation
   3  * Copyright © 2015 Advanced Micro Devices, Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  22  * IN THE SOFTWARE.
  23  */
  24
  25 /**
  26  * Test separate shaders using built-in varyings, which are allowed in the
  27  * compatibility profile (or GL 3.0 and earlier).
  28  */
  29
  30 #include "piglit-util-gl.h"
  31
  32 PIGLIT_GL_TEST_CONFIG_BEGIN
  33
  34         config.supports_gl_compat_version = 21;
  35         config.supports_gl_core_version = 0;
  36         config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
  37
  38 PIGLIT_GL_TEST_CONFIG_END
  39
  40 static GLuint pipeline;
  41
  42 static const char *vs_code =
  43         "#version 110\n"
  44         "#extension GL_ARB_separate_shader_objects: require\n"
  45         "\n"
  46         "varying vec4 gl_TexCoord[2];\n"
  47         "\n"
  48         "void main()\n"
  49         "{\n"
  50         "    gl_Position = gl_Vertex;\n"
  51         "    gl_TexCoord[0] = vec4(0.1, 0.2, 0.3, 0.4);\n"
  52         "    gl_TexCoord[1] = vec4(0.01, 0.02, 0.03, 0.04);\n"
  53         "}\n"
  54         ;
  55
  56 static const char *fs_code =
  57         "#version 110\n"
  58         "#extension GL_ARB_separate_shader_objects: require\n"
  59         "\n"
  60         "varying vec4 gl_TexCoord[2];\n"
  61         "\n"
  62         "void main()\n"
  63         "{\n"
  64         "    gl_FragColor = gl_TexCoord[0] + gl_TexCoord[1];\n"
  65         "}\n"
  66         ;
  67
  68 enum piglit_result
  69 piglit_display(void)
  70 {
  71         static const float expected[] = {
  72                 0.11, 0.22, 0.33, 0.44
  73         };
  74         bool pass;
  75
  76         glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
  77         glClear(GL_COLOR_BUFFER_BIT);
  78
  79         glBindProgramPipeline(pipeline);
  80         piglit_draw_rect(-1, -1, 2, 2);
  81
  82         pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height,
  83                                       expected);
  84
  85         piglit_present_results();
  86         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
  87 }
  88
  89 void piglit_init(int argc, char **argv)
  90 {
  91         GLuint vs_prog, fs_prog;
  92
  93         piglit_require_extension("GL_ARB_separate_shader_objects");
  94
  95         vs_prog = glCreateShaderProgramv(GL_VERTEX_SHADER, 1,
  96                                          (const GLchar *const*) &vs_code);
  97         piglit_link_check_status(vs_prog);
  98
  99         fs_prog = glCreateShaderProgramv(GL_FRAGMENT_SHADER, 1,
 100                                          (const GLchar *const *) &fs_code);
 101         piglit_link_check_status(fs_prog);
 102
 103         glGenProgramPipelines(1, &pipeline);
 104         glUseProgramStages(pipeline, GL_VERTEX_SHADER_BIT, vs_prog);
 105         glUseProgramStages(pipeline, GL_FRAGMENT_SHADER_BIT, fs_prog);
 106         piglit_program_pipeline_check_status(pipeline);
 107
 108         if (!piglit_check_gl_error(0))
 109                 piglit_report_result(PIGLIT_FAIL);
 110 }