glsl-fs-fogcolor-statechange: New test for possible driver bug.

1 files changed, 85 insertions, 0 deletions

diff --git a/tests/shaders/glsl-fs-fogcolor-statechange.c b/tests/shaders/glsl-fs-fogcolor-statechange.c
new file mode 100644
index 000000000..e625eaa59
--- /dev/null
+++ b/tests/shaders/glsl-fs-fogcolor-statechange.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright © 2011 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 glsl-fs-fogcolor-statechange.c
+ *
+ * Tests that changing just gl_Fog.color is reflected in program
+ * execution.
+ */
+
+#include "piglit-util.h"
+
+int piglit_width = 100, piglit_height = 100;
+int piglit_window_mode = GLUT_RGB | GLUT_DOUBLE | GLUT_ALPHA;
+
+enum piglit_result
+piglit_display(void)
+{
+	GLboolean pass = GL_TRUE;
+	static const float green[] = {0.0, 1.0, 0.0, 0.0};
+	static const float blue[] = {0.0, 0.0, 1.0, 0.0};
+
+	glClearColor(1.0, 0.0, 0.0, 0.0);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	glFogfv(GL_FOG_COLOR, green);
+	piglit_draw_rect(-1, -1, 1, 2);
+
+	glFogfv(GL_FOG_COLOR, blue);
+	piglit_draw_rect(0, -1, 1, 2);
+
+	pass &= piglit_probe_rect_rgba(0, 0,
+				       piglit_width / 2, piglit_height,
+				       green);
+	pass &= piglit_probe_rect_rgba(piglit_width / 2, 0,
+				       piglit_width / 2, piglit_height,
+				       blue);
+
+	glutSwapBuffers();
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	GLint vs, fs, prog;
+	const char *fs_source =
+		"void main()\n"
+		"{\n"
+		"	gl_FragColor = gl_Fog.color;\n"
+		"}\n";
+
+	if (!GLEW_VERSION_2_0) {
+		printf("Requires OpenGL 2.0\n");
+		piglit_report_result(PIGLIT_SKIP);
+	}
+
+	vs = piglit_compile_shader(GL_VERTEX_SHADER,
+				   "shaders/glsl-mvp.vert");
+	fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_source);
+
+	prog = piglit_link_simple_program(vs, fs);
+
+	glUseProgram(prog);
+}