tests/spec/arb_tessellation_shader/get-tcs-params.c

   1 /*
   2  * Copyright © 2014 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 get-tcs-params.c
  26  *
  27  * Test tessellation control shader layout getters.
  28  */
  29
  30 #include "piglit-util-gl.h"
  31
  32 PIGLIT_GL_TEST_CONFIG_BEGIN
  33
  34         config.supports_gl_compat_version = 32;
  35         config.supports_gl_core_version = 32;
  36         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  37
  38 PIGLIT_GL_TEST_CONFIG_END
  39
  40
  41 unsigned int prog;
  42
  43
  44 static const char *const vs_source =
  45 "#version 150\n"
  46 "void main() { gl_Position = vec4(0.0); }\n";
  47
  48
  49 static const char *const tcs_source_template =
  50 "#version 150\n"
  51 "#extension GL_ARB_tessellation_shader: require\n"
  52 "layout(vertices = %d) out;\n"
  53 "void main() {\n"
  54 "       gl_out[gl_InvocationID].gl_Position = vec4(0.0);\n"
  55 "       gl_TessLevelOuter = float[4](1.0, 1.0, 1.0, 1.0);\n"
  56 "       gl_TessLevelInner = float[2](1.0, 1.0);\n"
  57 "}\n";
  58 static char *tcs_source;
  59
  60
  61 static const char *const tes_source =
  62 "#version 150\n"
  63 "#extension GL_ARB_tessellation_shader: require\n"
  64 "layout(triangles) in;\n"
  65 "void main() { gl_Position = vec4(0.0); }\n";
  66 static char *tcs_source;
  67
  68
  69 static bool
  70 test_tcs_params(const int vertices)
  71 {
  72         int v;
  73
  74         sprintf(tcs_source, tcs_source_template, vertices);
  75         prog = piglit_build_simple_program_multiple_shaders(
  76                         GL_VERTEX_SHADER, vs_source,
  77                         GL_TESS_CONTROL_SHADER, tcs_source,
  78                         GL_TESS_EVALUATION_SHADER, tes_source,
  79                         0);
  80
  81         glGetProgramiv(prog, GL_TESS_CONTROL_OUTPUT_VERTICES, &v);
  82         if (v != vertices) {
  83                 fprintf(stderr, "GL_TESS_CONTROL_OUTPUT_VERTICES "
  84                         "is %d, expected %d for program \n%s\n",
  85                         v, vertices, tcs_source);
  86                 return false;
  87         }
  88
  89         return true;
  90 }
  91
  92
  93 void
  94 piglit_init(int argc, char **argv)
  95 {
  96         bool pass = true;
  97         int i, max_vertices;
  98         static const int vertices[] = {1, 2, 3, 4, 8, 16, 32};
  99
 100         piglit_require_extension("GL_ARB_tessellation_shader");
 101
 102         tcs_source = malloc(strlen(tcs_source_template) + 16);
 103
 104         for (i = 0; i < ARRAY_SIZE(vertices); ++i) {
 105                 pass = test_tcs_params(vertices[i]) && pass;
 106         }
 107
 108         glGetIntegerv(GL_MAX_PATCH_VERTICES, &max_vertices);
 109         pass = test_tcs_params(max_vertices) && pass;
 110
 111         free(tcs_source);
 112
 113         pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
 114
 115         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
 116 }
 117
 118
 119 enum piglit_result
 120 piglit_display(void)
 121 {
 122         return PIGLIT_PASS;
 123 }
 124