ARB_get_program_binary: Test that uniforms are reset on program reload (API)

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

2 files changed, 122 insertions, 0 deletions

diff --git a/tests/spec/arb_get_program_binary/CMakeLists.gl.txt b/tests/spec/arb_get_program_binary/CMakeLists.gl.txt
index 9e71ce010..2f2b99aaa 100644
--- a/tests/spec/arb_get_program_binary/CMakeLists.gl.txt
+++ b/tests/spec/arb_get_program_binary/CMakeLists.gl.txt
@@ -11,5 +11,6 @@ link_libraries (
 piglit_add_executable (arb_get_program_binary-api-errors api-errors.c)
 piglit_add_executable (arb_get_program_binary-overrun overrun.c)
 piglit_add_executable (arb_get_program_binary-retrievable_hint retrievable_hint.c)
+piglit_add_executable (arb_get_program_binary-reset-uniform reset-uniform.c gpb-common.c)
 
 # vim: ft=cmake:
diff --git a/tests/spec/arb_get_program_binary/reset-uniform.c b/tests/spec/arb_get_program_binary/reset-uniform.c
new file mode 100644
index 000000000..93defd378
--- /dev/null
+++ b/tests/spec/arb_get_program_binary/reset-uniform.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2017 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 reset-uniform.c
+ *
+ * From the ARB_get_program_binary extension spec:
+ *
+ * "A successful call to ProgramBinary will reset all uniform variables
+ *  to their initial values. The initial value is either the value of
+ *  the variable's initializer as specified in the original shader
+ *  source, or 0 if no initializer was present."
+ *
+ * Verify that a uniform value as read through the OpenGL API is
+ * restored to its initial value when glProgramBinary is used.
+ */
+
+#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
+
+static GLuint prog;
+
+static void
+check_color(const float *exp, const float *clr)
+{
+	if (exp[0] != clr[0] || exp[1] != clr[1] || exp[2] != clr[2] ||
+	    exp[3] != clr[3]) {
+		fprintf(stderr, "uniform color didn't match expected color\n");
+		piglit_report_result(PIGLIT_FAIL);
+	}
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	int num_formats = 0;
+	float red[] = { 1.0, 0.0, 0.0, 1.0 };
+	float green[] = { 0.0, 1.0, 0.0, 1.0 };
+	float clr[4];
+	GLint loc;
+
+	static const char vs_source[] =
+		"void main()\n"
+		"{\n"
+		"    gl_Position = gl_Vertex;\n"
+		"}\n";
+	static const char fs_source[] =
+		"#version 120\n"
+		"uniform vec4 color = vec4(0.0, 1.0, 0.0, 1.0);\n"
+		"\n"
+		"void main()\n"
+		"{\n"
+		"        gl_FragColor = color;\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);
+
+	prog = piglit_build_simple_program(vs_source, fs_source);
+	glUseProgram(prog);
+
+	loc = glGetUniformLocation(prog, "color");
+	if (loc < 0)
+		piglit_report_result(PIGLIT_FAIL);
+
+	glGetUniformfv(prog, loc, clr);
+	check_color(green, clr);
+
+	glUniform4fv(loc, 1, red);
+	glGetUniformfv(prog, loc, clr);
+	check_color(red, clr);
+
+	gpb_save_restore(&prog);
+
+	loc = glGetUniformLocation(prog, "color");
+	if (loc < 0)
+		piglit_report_result(PIGLIT_FAIL);
+
+	glGetUniformfv(prog, loc, clr);
+	check_color(green, clr);
+
+	piglit_report_result(PIGLIT_PASS);
+}
+
+enum piglit_result
+piglit_display(void)
+{
+	return PIGLIT_FAIL;
+}