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/*
* Copyright © 2013 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 named-block-no-modify.c
*
* Test that uniform variables contained within a named uniform block cannot be
* accessed by the glUniform* commands.
*
* Section 2.11.4 (Uniform Variables) of the GL 3.2 spec says:
* "Uniforms in a named uniform block are not assigned a location and may
* not be modified using the Uniform* commands."
*
* Test relies on the behavior of glGetUniform returning -1 for uniforms
* that have not been assigned a location, such as those in a named uniform
* block.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_core_version = 32;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
/* the operations in this shader are not strictly relevant, only that they
* do not get discarded */
static const char vs_text[] =
"#version 150\n"
"\n"
"in vec4 piglit_vertex;\n"
"\n"
"uniform testBlock {\n"
" int a;\n"
" float b;\n"
" mat4 c;\n"
"};\n"
"\n"
"flat out int oa;\n"
"out float ob;\n"
"out mat4 oc;\n"
"\n"
"void main() {\n"
" gl_Position = piglit_vertex;\n"
" oa = a + 1;\n"
" ob = b * 2;\n"
" oc[0] = c[0] * 1;\n"
" oc[1] = c[1] * 2;\n"
" oc[2] = c[2] * 3;\n"
" oc[3] = c[3] * 4;\n"
"}\n";
/* again, operations are just to touch data */
static const char fs_text[] =
"#version 150\n"
"\n"
"flat in int oa;\n"
"in float ob;\n"
"in mat4 oc;\n"
"out vec4 FragColor;\n"
"\n"
"void main() {\n"
" FragColor = vec4(float(oa) * oc[0][0],\n"
" ob * oc[1][1],\n"
" oc[2][2],\n"
" oc[3][3]);\n"
"}\n";
static GLuint prog;
void
piglit_init(int argc, char **argv)
{
bool pass = true;
int a_loc = -2;
int b_loc = -3;
int c_loc = -4;
prog = piglit_build_simple_program(vs_text, fs_text);
glUseProgram(prog);
/* get uniforms, locations should be -1 if glGetUniformLocation
* can't retrieve their location */
a_loc = glGetUniformLocation(prog, "a");
if(a_loc != -1) {
printf("a_loc incorrectly assigned a location: %d", a_loc);
pass = false;
}
b_loc = glGetUniformLocation(prog, "b");
if(b_loc != -1) {
printf("b_loc incorrectly assigned a location: %d", b_loc);
pass = false;
}
c_loc = glGetUniformLocation(prog, "c");
if(c_loc != -1) {
printf("c_loc incorrectly assigned a location: %d", c_loc);
pass = false;
}
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result
piglit_display(void)
{
/* should not reach */
return PIGLIT_FAIL;
}
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