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/*
* Copyright (c) 2018 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 restore-implicit-use-program.c
*
* Ref: https://bugs.freedesktop.org/show_bug.cgi?id=106810
*
* From section 7.3 (Program Objects) of the OpenGL 4.5 spec:
*
* "If LinkProgram or ProgramBinary successfully re-links a program
* object that is active for any shader stage, then the newly generated
* executable code will be installed as part of the current rendering
* state for all shader stages where the program is active.
* Additionally, the newly generated executable code is made part of
* the state of any program pipeline for all stages where the program
* is attached."
*/
#include "piglit-util-gl.h"
#include "gpb-common.h"
#include <stdlib.h>
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 30;
config.window_visual = PIGLIT_GL_VISUAL_RGB;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
void
piglit_init(int argc, char **argv)
{
GLsizei bin_length;
void *green_binary;
GLenum bin_format;
int num_formats = 0;
float red[] = { 1.0, 0.0, 0.0, 1.0 };
float green[] = { 0.0, 1.0, 0.0, 1.0 };
GLuint green_prog, red_then_green_prog;
bool pass = true;
static const char vs_source[] =
"void main()\n"
"{\n"
" gl_Position = gl_Vertex;\n"
"}\n";
static const char green_fs_source[] =
"#version 120\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
"}\n";
static const char red_fs_source[] =
"#version 120\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);\n"
"}\n";
piglit_require_extension("GL_ARB_get_program_binary");
glGetIntegerv(GL_NUM_PROGRAM_BINARY_FORMATS, &num_formats);
if (num_formats == 0)
piglit_report_result(PIGLIT_SKIP);
green_prog = piglit_build_simple_program(vs_source, green_fs_source);
glUseProgram(green_prog);
glClearColor(1.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
piglit_draw_rect(-1.0f, -1.0f, 2.0f, 2.0f);
pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height,
green) && pass;
red_then_green_prog = piglit_build_simple_program(vs_source,
red_fs_source);
glUseProgram(red_then_green_prog);
if (!gpb_save_program(green_prog, &green_binary, &bin_length,
&bin_format)) {
fprintf(stderr,
"failed to save program with GetProgramBinary\n");
piglit_report_result(PIGLIT_FAIL);
}
/* We just built and activated the red program. We saved out
* the green program, but that should not impact drawing with
* the red program.
*/
glClearColor(0.0, 1.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
piglit_draw_rect(-1.0f, -1.0f, 2.0f, 2.0f);
pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height,
red) && pass;
/* Restore the 'green' program over the 'red_then_green_prog'
* handle. Since red_then_green_prog is currently bound, we
* expect supsequent draws will be green without having to
* rebind the program.
*/
if (!gpb_restore_program(red_then_green_prog, green_binary, bin_length,
bin_format)) {
free(green_binary);
fprintf(stderr, "failed to restore binary program\n");
piglit_report_result(PIGLIT_FAIL);
}
free(green_binary);
/* Verify drawing now produces green. */
glClearColor(1.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
piglit_draw_rect(-1.0f, -1.0f, 2.0f, 2.0f);
pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height,
green) && pass;
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result
piglit_display(void)
{
return PIGLIT_FAIL;
}
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