tests/spec/arb_tessellation_shader/invalid-primitive.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 invalid-primitive.c
  26  *
  27  * From the ARB_tessellation_shader spec (Errors section):
  28  *
  29  *  "The error INVALID_OPERATION is generated by Begin (or vertex array
  30  *  commands that implicitly call Begin) if the active program contains a
  31  *  tessellation control or evaluation shader and the primitive mode is not
  32  *  PATCHES.
  33  *
  34  *  The error INVALID_OPERATION is generated by Begin (or vertex array
  35  *  commands that implicitly call Begin) if the primitive mode is PATCHES if
  36  *  either:
  37  *
  38  *    *  the active program contains no tessellation evaluation shader, or
  39  *    *  no program is active."
  40  *
  41  * Test for all those errors except without active program.
  42  */
  43
  44 #include "piglit-util-gl.h"
  45
  46 PIGLIT_GL_TEST_CONFIG_BEGIN
  47
  48         config.supports_gl_compat_version = 32;
  49         config.supports_gl_core_version = 32;
  50         config.khr_no_error_support = PIGLIT_HAS_ERRORS;
  51
  52 PIGLIT_GL_TEST_CONFIG_END
  53
  54
  55 static const char *const vs_source =
  56 "#version 150\n"
  57 "void main() { gl_Position = vec4(0.0); }\n";
  58
  59 static const char *const tcs_source =
  60 "#version 150\n"
  61 "#extension GL_ARB_tessellation_shader: require\n"
  62 "layout(vertices = 3) out;\n"
  63 "void main() { gl_out[gl_InvocationID].gl_Position = vec4(0.0); }\n";
  64
  65 static const char *const tes_source =
  66 "#version 150\n"
  67 "#extension GL_ARB_tessellation_shader: require\n"
  68 "layout(triangles) in;\n"
  69 "void main() { gl_Position = vec4(0.0); }\n";
  70
  71 static const char *const fs_source =
  72 "#version 150\n"
  73 "void main() { gl_FragColor = vec4(0.0); }\n";
  74
  75
  76 void
  77 piglit_init(int argc, char **argv)
  78 {
  79         bool pass = true;
  80         int i;
  81         unsigned int vao, tess_prog, normal_prog;
  82         static const GLenum primitive[] = {
  83                 GL_POINTS,
  84                 GL_LINES,
  85                 GL_LINE_LOOP,
  86                 GL_LINE_STRIP,
  87                 GL_TRIANGLES,
  88                 GL_TRIANGLE_STRIP,
  89                 GL_TRIANGLE_FAN,
  90                 GL_LINES_ADJACENCY,
  91                 GL_LINE_STRIP_ADJACENCY,
  92                 GL_TRIANGLES_ADJACENCY,
  93                 GL_TRIANGLE_STRIP_ADJACENCY,
  94         };
  95
  96         piglit_require_extension("GL_ARB_tessellation_shader");
  97
  98         glGenVertexArrays(1, &vao);
  99         glBindVertexArray(vao);
 100
 101         tess_prog = piglit_build_simple_program_multiple_shaders(
 102                         GL_VERTEX_SHADER, vs_source,
 103                         GL_TESS_CONTROL_SHADER, tcs_source,
 104                         GL_TESS_EVALUATION_SHADER, tes_source,
 105                         GL_FRAGMENT_SHADER, fs_source,
 106                         0);
 107         normal_prog = piglit_build_simple_program_multiple_shaders(
 108                         GL_VERTEX_SHADER, vs_source,
 109                         GL_FRAGMENT_SHADER, fs_source,
 110                         0);
 111
 112         for (i = 0; i < ARRAY_SIZE(primitive); ++i) {
 113                 glUseProgram(tess_prog);
 114                 pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
 115                 glDrawArrays(primitive[i], 0, 12);
 116                 pass = piglit_check_gl_error(GL_INVALID_OPERATION) && pass;
 117         }
 118
 119         /* NV_gpu_shader5 allows drawing patches without tessellation
 120          * evaluation shader.
 121          */
 122         if (!piglit_is_extension_supported("GL_NV_gpu_shader5")) {
 123                 glUseProgram(normal_prog);
 124                 pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
 125                 glDrawArrays(GL_PATCHES, 0, 12);
 126                 pass = piglit_check_gl_error(GL_INVALID_OPERATION) && pass;
 127         }
 128
 129         glUseProgram(0);
 130         glDeleteProgram(tess_prog);
 131         glDeleteProgram(normal_prog);
 132         glBindVertexArray(0);
 133         glDeleteVertexArrays(1, &vao);
 134
 135         pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
 136
 137         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
 138 }
 139
 140
 141 enum piglit_result
 142 piglit_display(void)
 143 {
 144         return PIGLIT_PASS;
 145 }
 146