tests/spec/arb_pipeline_statistics_query/pipeline_stats_geom.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
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   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 /** \file pipeline_stats_geom.c
  25  *
  26  *  This test verifies that the vertex shader related tokens of
  27  *  ARB_pipeline_statistics_query() work as expected. OpenGL 4.4 Specification,
  28  *  Core Profile.
  29  *
  30  *  When BeginQuery is called with a target of GEOMETRY_SHADER_INVOCATIONS,
  31  *  the geometry shader invocations count maintained by the GL is set to zero.
  32  *  When a geometry shader invocations query is active, the counter is
  33  *  incremented every time the geometry shader is invoked (see section 11.3).
  34  *  In case of instanced geometry shaders (see section 11.3.4.2) the geometry
  35  *  shader invocations count is incremented for each separate instanced
  36  *  invocation.
  37  *
  38  *  When BeginQuery is called with a target of GEOMETRY_SHADER_PRIMITIVES_-
  39  *  EMITTED_ARB, the geometry shader output primitives count maintained by the
  40  *  GL is set to zero. When a geometry shader primitives emitted query is
  41  *  active, the counter is incremented every time the geometry shader emits
  42  *  a primitive to a vertex stream that is further processed by the GL (see
  43  *  section 11.3.2). Restarting primitive topology using the shading language
  44  *  built-in functions EndPrimitive or EndStreamPrimitive does not increment
  45  *  the geometry shader output primitives count.
  46  *
  47  *  (The chicken clause)
  48  *  The result of geometry shader queries may be implementation dependent due
  49  *  to reasons described in section 11.1.3.
  50  */
  51
  52 #include "piglit-util-gl.h"
  53 #include "pipestat_help.h"
  54
  55 PIGLIT_GL_TEST_CONFIG_BEGIN
  56     config.supports_gl_core_version = 32;
  57     config.supports_gl_compat_version = 32;
  58     config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
  59 PIGLIT_GL_TEST_CONFIG_END
  60
  61 const char *vs_src =
  62         "#version 150                   \n"
  63         "in vec4 piglit_vertex;         \n"
  64         "out vec4 vertex_to_gs;         \n"
  65         "void main()                    \n"
  66         "{                              \n"
  67         "  vertex_to_gs = piglit_vertex;\n"
  68         "}                              \n";
  69
  70 const char *gs_src =
  71         "#version 150                                   \n"
  72         "layout(triangles) in;                          \n"
  73         "layout(triangle_strip, max_vertices = 6) out;  \n"
  74         "in vec4 vertex_to_gs[3];                       \n"
  75         "void main()                                    \n"
  76         "{                                              \n"
  77         "  for (int i = 0; i < 6; i++) {                \n"
  78         "    gl_Position = vertex_to_gs[i % 3];         \n"
  79         "    EmitVertex();                              \n"
  80         "  }                                            \n"
  81         "}                                              \n";
  82
  83
  84 #ifdef DISPLAY
  85 const char *fs_src =
  86         "#version 150                                   \n"
  87         "out vec4 color;                                \n"
  88         "void main()                                    \n"
  89         "{                                              \n"
  90         "    color = vec4(0.0, 1.0, 0.0, 1.0);          \n"
  91         "}                                              \n";
  92 #endif
  93
  94 static struct query queries[] = {
  95         {
  96          .query = GL_GEOMETRY_SHADER_INVOCATIONS,
  97          .min = NUM_PRIMS,
  98          .max = NUM_PRIMS},
  99
 100         /* There are going to be NUM_PRIMS invocations, and for each invocation
 101          * we're going to write 6 vertices in a tristrip, which is 4 triangles.
 102          * So NUM_PRIMS * 4 is what we expect here */
 103         {
 104          .query = GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB,
 105          .min = NUM_PRIMS * 4,
 106          .max = NUM_PRIMS * 4}
 107 };
 108
 109 enum piglit_result
 110 piglit_display(void)
 111 {
 112         enum piglit_result ret = do_query(queries, ARRAY_SIZE(queries));
 113 #ifdef DISPLAY
 114         piglit_present_results();
 115 #endif
 116         return ret;
 117 }
 118
 119 void
 120 piglit_init(int argc, char *argv[])
 121 {
 122         GLuint vs, gs, prog;
 123
 124         do_query_init(queries, ARRAY_SIZE(queries));
 125
 126         prog = glCreateProgram();
 127
 128         vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_src);
 129         gs = piglit_compile_shader_text(GL_GEOMETRY_SHADER, gs_src);
 130
 131 #ifndef DISPLAY
 132         glEnable(GL_RASTERIZER_DISCARD);
 133 #else
 134         glAttachShader(prog,
 135                         piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_src));
 136 #endif
 137
 138         glAttachShader(prog, vs);
 139         glAttachShader(prog, gs);
 140         glLinkProgram(prog);
 141
 142         if (!piglit_link_check_status(prog)) {
 143                 glDeleteProgram(prog);
 144                 piglit_report_result(PIGLIT_FAIL);
 145         }
 146
 147         glUseProgram(prog);
 148 }