tests/spec/arb_blend_func_extended/api/output-location.c

   1 /* Copyright © 2015 Intel Corporation
   2  *
   3  * Permission is hereby granted, free of charge, to any person obtaining a
   4  * copy of this software and associated documentation files (the "Software"),
   5  * to deal in the Software without restriction, including without limitation
   6  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   7  * and/or sell copies of the Software, and to permit persons to whom the
   8  * Software is furnished to do so, subject to the following conditions:
   9  *
  10  * The above copyright notice and this permission notice (including the next
  11  * paragraph) shall be included in all copies or substantial portions of the
  12  * Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  20  * IN THE SOFTWARE.
  21  */
  22
  23 /**
  24  * \file output-location.c
  25  *
  26  * \author Tapani Pälli
  27  * heavily inspired by getfragdataindex.c from Dave Airlie
  28  */
  29 #include "piglit-util-gl.h"
  30
  31 PIGLIT_GL_TEST_CONFIG_BEGIN
  32
  33 #ifdef PIGLIT_USE_OPENGL
  34         config.supports_gl_core_version = 31;
  35 #else // PIGLIT_USE_OPENGLES3
  36         config.supports_gl_es_version = 30;
  37 #endif
  38         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  39         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  40
  41 PIGLIT_GL_TEST_CONFIG_END
  42
  43 #ifdef PIGLIT_USE_OPENGL
  44 static const char *vs_text =
  45         "#version 150\n"
  46         "in vec4 vertex;\n"
  47         "void main() { gl_Position = vertex; }\n"
  48         ;
  49
  50 static const char *fs_template =
  51         "#version 150\n"
  52         "#extension GL_ARB_explicit_attrib_location : require\n"
  53         "layout(location = 0, index = 0) out vec4 a;\n"
  54         "layout(location = %d, index = 1) out vec4 b;\n"
  55         "void main() {\n"
  56         "    a = vec4(0.0);\n"
  57         "    b = vec4(1.0);\n"
  58         "}\n"
  59         ;
  60 #else // PIGLIT_USE_OPENGLES3
  61 static const char *vs_text =
  62         "#version 300 es\n"
  63         "in vec4 vertex;\n"
  64         "void main() { gl_Position = vertex; }\n"
  65         ;
  66
  67 static const char *fs_template =
  68         "#version 300 es\n"
  69         "#extension GL_EXT_blend_func_extended : enable\n"
  70         "layout(location = 0, index = 0) out highp vec4 a;\n"
  71         "layout(location = %d, index = 1) out highp vec4 b;\n"
  72         "void main() {\n"
  73         "    a = vec4(0.0);\n"
  74         "    b = vec4(1.0);\n"
  75         "}\n"
  76         ;
  77 #endif
  78
  79 enum piglit_result
  80 piglit_display(void)
  81 {
  82         return PIGLIT_FAIL;
  83 }
  84
  85 void piglit_init(int argc, char **argv)
  86 {
  87         GLint max_dual_source;
  88         GLuint prog;
  89         char fs_text[256];
  90
  91
  92 #ifdef PIGLIT_USE_OPENGL
  93         piglit_require_GLSL_version(150);
  94         piglit_require_extension("GL_ARB_blend_func_extended");
  95 #else // PIGLIT_USE_OPENGLES3
  96         piglit_require_extension("GL_EXT_blend_func_extended");
  97 #endif
  98         glGetIntegerv(GL_MAX_DUAL_SOURCE_DRAW_BUFFERS, &max_dual_source);
  99
 100         if (max_dual_source < 1) {
 101                 fprintf(stderr,
 102                         "ARB_blend_func_extended requires "
 103                         "GL_MAX_DUAL_SOURCE_DRAW_BUFFERS >= 1. "
 104                         "Only got %d!\n",
 105                         max_dual_source);
 106                 piglit_report_result(PIGLIT_FAIL);
 107         }
 108
 109         /* Set >= GL_MAX_DUAL_SOURCE_DRAW_BUFFERS location for 'b' */
 110         snprintf(fs_text, 256, fs_template, max_dual_source);
 111
 112         prog = piglit_build_simple_program_unlinked(vs_text, fs_text);
 113
 114         /* Linking should fail as the location set is too big. */
 115         glLinkProgram(prog);
 116
 117         if (piglit_link_check_status(prog))
 118                 piglit_report_result(PIGLIT_FAIL);
 119
 120         piglit_report_result(PIGLIT_PASS);
 121 }