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/*
* Copyright © 2013 Marek Olšák <maraeo@gmail.com>
*
* 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.
*/
/**
* Tests if PRIMITIVES_GENERATED works with transform feedback disabled.
*
* From EXT_transform_feedback:
* "the primitives-generated count is incremented every time a primitive
* reaches the Discarding Rasterization stage"
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 32;
config.supports_gl_core_version = 32;
config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
PIGLIT_GL_TEST_CONFIG_END
static const char *vstext = "#version 140\nin vec4 piglit_vertex; void main() { gl_Position = piglit_vertex; }";
const char *vsgstext = {
"#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 *gstext = {
"#version 150\n"
"layout(triangles) in;\n"
"layout(triangle_strip, max_vertices = 3) out;\n"
"in vec4 vertex_to_gs[3];\n"
"void main()\n"
"{\n"
" for (int i = 0; i < 3; i++) {\n"
" gl_Position = vertex_to_gs[i];\n"
" EmitVertex();\n"
" }\n"
"}\n"
};
GLuint prog;
GLuint q;
void piglit_init(int argc, char **argv)
{
unsigned qresult;
int expected = 2;
GLuint vs, gs;
const int use_gs = argc > 1;
glGenQueries(1, &q);
// glEnable(GL_RASTERIZER_DISCARD);
prog = glCreateProgram();
/* Create shaders. */
if (use_gs) {
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vsgstext);
gs = piglit_compile_shader_text(GL_GEOMETRY_SHADER, gstext);
glAttachShader(prog, gs);
printf("Using GS\n");
} else
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vstext);
glAttachShader(prog, vs);
glLinkProgram(prog);
if (!piglit_link_check_status(prog)) {
glDeleteProgram(prog);
piglit_report_result(PIGLIT_FAIL);
}
glUseProgram(prog);
glBeginQuery(GL_PRIMITIVES_GENERATED, q);
piglit_draw_rect(-1, -1, 2, 2);
glEndQuery(GL_PRIMITIVES_GENERATED);
glGetQueryObjectuiv(q, GL_QUERY_RESULT, &qresult);
if (qresult != expected) {
printf("Primitives generated: %i, Expected: %i\n",
qresult, expected);
piglit_report_result(PIGLIT_FAIL);
}
piglit_report_result(PIGLIT_PASS);
}
enum piglit_result piglit_display(void)
{
return PIGLIT_FAIL; /* should not get here */
}
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