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/*
* Copyright © 2009 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.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*
*/
/** @file glsl-getactiveuniform-count.c
*
* Tests that glGetActiveUniform() has the uniform's string length correctly
* reflected in GL_ACTIVE_UNIFORM_MAX_LENGTH and the *length outvalue.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 10;
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
PIGLIT_GL_TEST_CONFIG_END
static GLint prog;
enum piglit_result
piglit_display(void)
{
/* unreached */
return PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
GLboolean pass = GL_TRUE;
GLint vs, fs, len, ret_len;
GLenum type;
char *name;
GLsizei size;
/* OpenGL ES 3.0 and OpenGL 4.2 require that the "[0]" be appended to
* the name. Earlier versions of the spec are ambiguous. Accept
* either name.
*/
const size_t scalar_length = strlen("color");
const size_t array_length = strlen("color[0]");
piglit_require_gl_version(20);
vs = piglit_compile_shader(GL_VERTEX_SHADER,
"shaders/glsl-getactiveuniform-length.vert");
fs = piglit_compile_shader(GL_FRAGMENT_SHADER,
"shaders/glsl-color.frag");
prog = piglit_link_simple_program(vs, fs);
/* From page 261 (page 275 of the PDF) of the OpenGL 2.1 specification:
*
* If pname is ACTIVE UNIFORM MAX LENGTH, the length of
* the longest active uniform name, including a null
* terminator, is returned.
*/
glGetProgramiv(prog, GL_ACTIVE_UNIFORM_MAX_LENGTH, &len);
if (len != (scalar_length + 1) && len != (array_length + 1)) {
printf("Unexpected max active uniform length "
"(saw %d, expected %lu or %lu)\n", len,
(unsigned long) scalar_length,
(unsigned long) array_length);
pass = GL_FALSE;
}
/* From page 80 (page 88 of the PDF) of the OpenGL 2.1 specification:
*
* The actual number of characters written into name,
* excluding the null terminator, is returned in length.
*/
name = malloc(len);
glGetActiveUniform(prog, 0, len + 20, &ret_len, &size, &type, name);
if (ret_len != scalar_length && ret_len != array_length) {
printf("Unexpected active uniform length "
"(saw %d, expected %lu or %lu) for \"%s\"\n",
ret_len,
(unsigned long) scalar_length,
(unsigned long) array_length,
name);
pass = GL_FALSE;
}
if (pass)
piglit_report_result(PIGLIT_PASS);
else
piglit_report_result(PIGLIT_FAIL);
}
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