1 files changed, 110 insertions, 0 deletions
diff --git a/tests/spec/arb_shader_stencil_export/basic.c b/tests/spec/arb_shader_stencil_export/basic.c
new file mode 100644
index 000000000..a1d6f1e4b
--- /dev/null
+++ b/tests/spec/arb_shader_stencil_export/basic.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright © 2015 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.
+ *
+ */
+
+#include "piglit-util-gl.h"
+
+#define width 32
+#define height 32
+
+static const char *vs_text =
+	"#version 330 \n"
+	"layout(location = 0) in vec4 piglit_vertex; \n"
+	"void main() { \n"
+	"  gl_Position = piglit_vertex; \n"
+	"}\n";
+
+static const char *fs_stencil_output_text =
+	"#version 330 \n"
+	"#extension GL_ARB_shader_stencil_export : require \n"
+	"uniform int ref; \n"
+	"void main() \n"
+	"{ \n"
+	"   gl_FragStencilRefARB = ref; \n"
+	"} \n";
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_core_version = 31;
+
+	config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGB;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static GLuint stc_prog;
+
+static void glReadStencil(uint8_t val)
+{
+	uint8_t data[width * height];
+
+	uint8_t expected_data[width * height];
+
+	memset(expected_data, val, sizeof(expected_data));
+
+	glReadPixels(0, 0, width, height, GL_STENCIL_INDEX, GL_UNSIGNED_BYTE, data);
+
+	memcmp(data, expected_data, sizeof(expected_data));
+}
+
+
+static void glWriteStencil(uint8_t val)
+{
+
+	glUseProgram(stc_prog);
+	GLuint ref = glGetUniformLocation(stc_prog, "ref");
+	glUniform1i(ref, val);
+	glEnable(GL_STENCIL_TEST);
+	glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
+	glStencilFunc(GL_ALWAYS, 0, 0xff);
+	piglit_draw_rect(-1, -1, 2, 2);
+	glDisable(GL_STENCIL_TEST);
+}
+
+enum piglit_result
+piglit_display(void)
+{
+	glViewport(0, 0, width, height);
+	glClearStencil(0);
+	glClear(GL_STENCIL_BUFFER_BIT);
+
+	glWriteStencil(5);
+
+	glReadStencil(5);
+
+	return PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	if (piglit_get_gl_version() < 33)
+		piglit_report_result(PIGLIT_SKIP);
+
+	piglit_require_extension("GL_ARB_shader_stencil_export");
+	stc_prog = piglit_build_simple_program(vs_text, fs_stencil_output_text);
+
+	if (!piglit_check_gl_error(GL_NO_ERROR))
+		piglit_report_result(PIGLIT_FAIL);
+
+	piglit_report_result(PIGLIT_PASS);
+}