tests/spec/arb_geometry_shader4/execution/program-parameter/common.h

   1 /*
   2  * Copyright © 2013 The Piglit project
   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
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 /**
  25  * \file common.h
  26  *
  27  * Common code for glProgramParameter testing.
  28  */
  29
  30 #include "piglit-util-gl.h"
  31
  32
  33 struct primitive_geom_info {
  34         GLenum type;
  35         GLenum error;
  36 };
  37
  38
  39 /* Primitive types passed as geometry shader input type and expected error. */
  40 static const struct primitive_geom_info primitives_in[] = {
  41         {GL_POINTS, GL_NO_ERROR},
  42
  43         {GL_LINES, GL_NO_ERROR},
  44         {GL_LINE_STRIP, GL_INVALID_VALUE},
  45         {GL_LINE_LOOP, GL_INVALID_VALUE},
  46
  47         {GL_TRIANGLES, GL_NO_ERROR},
  48         {GL_TRIANGLE_STRIP, GL_INVALID_VALUE},
  49         {GL_TRIANGLE_FAN, GL_INVALID_VALUE},
  50
  51         {GL_LINES_ADJACENCY, GL_NO_ERROR},
  52         {GL_LINE_STRIP_ADJACENCY, GL_INVALID_VALUE},
  53
  54         {GL_TRIANGLES_ADJACENCY, GL_NO_ERROR},
  55         {GL_TRIANGLE_STRIP_ADJACENCY, GL_INVALID_VALUE},
  56
  57         {GL_QUADS, GL_INVALID_VALUE},
  58         {GL_QUAD_STRIP, GL_INVALID_VALUE},
  59         {GL_POLYGON, GL_INVALID_VALUE},
  60 };
  61
  62
  63 static const char vs_text[] =
  64         "void main()\n"
  65         "{\n"
  66         "       gl_Position = vec4(0);\n"
  67         "}\n";
  68
  69 static const char gs_text[] =
  70         "#extension GL_ARB_geometry_shader4: enable\n"
  71         "uniform int vertex_count;\n"
  72         "void main()\n"
  73         "{\n"
  74         "       for (int i = 0; i < vertex_count; i++) {\n"
  75         "               gl_Position = vec4(0.0);\n"
  76         "               EmitVertex();\n"
  77         "       }\n"
  78         "}\n";
  79
  80 static const char fs_text[] =
  81         "void main()\n"
  82         "{\n"
  83         "       gl_FragColor = vec4(1.0);\n"
  84         "}\n";
  85
  86
  87 static GLuint
  88 create_shader(const char *const vs_text, const char *const gs_text,
  89               const char *const fs_text)
  90 {
  91         const char *const varying = "var";
  92         GLuint vs, gs, fs, prog;
  93
  94         prog = glCreateProgram();
  95         vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_text);
  96         glAttachShader(prog, vs);
  97         glDeleteShader(vs);
  98         gs = piglit_compile_shader_text(GL_GEOMETRY_SHADER, gs_text);
  99         glAttachShader(prog, gs);
 100         glDeleteShader(gs);
 101         if (fs_text) {
 102                 fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_text);
 103                 glAttachShader(prog, fs);
 104                 glDeleteShader(fs);
 105         } else {
 106                 glTransformFeedbackVaryings(prog, 1, &varying,
 107                                             GL_INTERLEAVED_ATTRIBS);
 108         }
 109
 110         if (!piglit_check_gl_error(GL_NO_ERROR))
 111                 piglit_report_result(PIGLIT_FAIL);
 112
 113         return prog;
 114 }
 115