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/*
* Copyright © 2014 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
/** \file pipeline_stats_geom.c
*
* This test verifies that the vertex shader related tokens of
* ARB_pipeline_statistics_query() work as expected. OpenGL 4.4 Specification,
* Core Profile.
*
* When BeginQuery is called with a target of GEOMETRY_SHADER_INVOCATIONS,
* the geometry shader invocations count maintained by the GL is set to zero.
* When a geometry shader invocations query is active, the counter is
* incremented every time the geometry shader is invoked (see section 11.3).
* In case of instanced geometry shaders (see section 11.3.4.2) the geometry
* shader invocations count is incremented for each separate instanced
* invocation.
*
* When BeginQuery is called with a target of GEOMETRY_SHADER_PRIMITIVES_-
* EMITTED_ARB, the geometry shader output primitives count maintained by the
* GL is set to zero. When a geometry shader primitives emitted query is
* active, the counter is incremented every time the geometry shader emits
* a primitive to a vertex stream that is further processed by the GL (see
* section 11.3.2). Restarting primitive topology using the shading language
* built-in functions EndPrimitive or EndStreamPrimitive does not increment
* the geometry shader output primitives count.
*
* (The chicken clause)
* The result of geometry shader queries may be implementation dependent due
* to reasons described in section 11.1.3.
*/
#include "piglit-util-gl.h"
#include "pipestat_help.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_core_version = 32;
config.supports_gl_compat_version = 32;
config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
PIGLIT_GL_TEST_CONFIG_END
const char *vs_src =
"#version 150 \n"
"in vec4 piglit_vertex; \n"
"out vec4 vertex_to_gs; \n"
"void main() \n"
"{ \n"
" vertex_to_gs = piglit_vertex;\n"
"} \n";
const char *gs_src =
"#version 150 \n"
"layout(triangles) in; \n"
"layout(triangle_strip, max_vertices = 6) out; \n"
"in vec4 vertex_to_gs[3]; \n"
"void main() \n"
"{ \n"
" for (int i = 0; i < 6; i++) { \n"
" gl_Position = vertex_to_gs[i % 3]; \n"
" EmitVertex(); \n"
" } \n"
"} \n";
#ifdef DISPLAY
const char *fs_src =
"#version 150 \n"
"out vec4 color; \n"
"void main() \n"
"{ \n"
" color = vec4(0.0, 1.0, 0.0, 1.0); \n"
"} \n";
#endif
static struct query queries[] = {
{
.query = GL_GEOMETRY_SHADER_INVOCATIONS,
.min = NUM_PRIMS,
.max = NUM_PRIMS},
/* There are going to be NUM_PRIMS invocations, and for each invocation
* we're going to write 6 vertices in a tristrip, which is 4 triangles.
* So NUM_PRIMS * 4 is what we expect here */
{
.query = GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB,
.min = NUM_PRIMS * 4,
.max = NUM_PRIMS * 4}
};
enum piglit_result
piglit_display(void)
{
enum piglit_result ret = do_query(queries, ARRAY_SIZE(queries));
#ifdef DISPLAY
piglit_present_results();
#endif
return ret;
}
void
piglit_init(int argc, char *argv[])
{
GLuint vs, gs, prog;
piglit_require_gl_version(15);
piglit_require_GLSL();
do_query_init(queries, ARRAY_SIZE(queries));
prog = glCreateProgram();
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_src);
gs = piglit_compile_shader_text(GL_GEOMETRY_SHADER, gs_src);
#ifndef DISPLAY
glEnable(GL_RASTERIZER_DISCARD);
#else
glAttachShader(prog,
piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_src));
#endif
glAttachShader(prog, vs);
glAttachShader(prog, gs);
glLinkProgram(prog);
if (!piglit_link_check_status(prog)) {
glDeleteProgram(prog);
piglit_report_result(PIGLIT_FAIL);
}
glUseProgram(prog);
}
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