[Piglit] [PATCH 07/15] arb_tessellation_shader: Test control layout getters.

[Fabian Bieler]

Use glGetProgramiv() to test tessellation control shader output layouts.

Signed-off-by: Fabian Bieler <fabianbieler at fastmail.fm>
---
 tests/all.py                                       |   1 +
 .../spec/arb_tessellation_shader/CMakeLists.gl.txt |   1 +
 .../spec/arb_tessellation_shader/get-tcs-params.c  | 114 +++++++++++++++++++++
 3 files changed, 116 insertions(+)
 create mode 100644 tests/spec/arb_tessellation_shader/get-tcs-params.c

diff --git a/tests/all.py b/tests/all.py
index 278930a..0676af3 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -1439,6 +1439,7 @@ add_plain_test(arb_point_sprite, 'point-sprite')
 arb_tessellation_shader = Group()
 spec['ARB_tessellation_shader'] = arb_tessellation_shader
 add_concurrent_test(arb_tessellation_shader, 'arb_tessellation_shader-get')
+add_concurrent_test(arb_tessellation_shader, 'arb_tessellation_shader-get-tcs-params')
 add_concurrent_test(arb_tessellation_shader, 'arb_tessellation_shader-get-tes-params')
 
 # Group ARB_texture_multisample
diff --git a/tests/spec/arb_tessellation_shader/CMakeLists.gl.txt b/tests/spec/arb_tessellation_shader/CMakeLists.gl.txt
index 1b85ba4..8d8369d 100644
--- a/tests/spec/arb_tessellation_shader/CMakeLists.gl.txt
+++ b/tests/spec/arb_tessellation_shader/CMakeLists.gl.txt
@@ -10,6 +10,7 @@ link_libraries (
 )
 
 piglit_add_executable (arb_tessellation_shader-get get.c)
+piglit_add_executable (arb_tessellation_shader-get-tcs-params get-tcs-params.c)
 piglit_add_executable (arb_tessellation_shader-get-tes-params get-tes-params.c)
 
 # vim: ft=cmake:
diff --git a/tests/spec/arb_tessellation_shader/get-tcs-params.c b/tests/spec/arb_tessellation_shader/get-tcs-params.c
new file mode 100644
index 0000000..45c685b
--- /dev/null
+++ b/tests/spec/arb_tessellation_shader/get-tcs-params.c
@@ -0,0 +1,114 @@
+/*
+ * Copyright © 2014 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 get-tcs-params.c
+ *
+ * Test tessellation control shader layout getters.
+ */
+
+#include "piglit-util-gl-common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_compat_version = 32;
+	config.supports_gl_core_version = 32;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+
+unsigned int prog;
+
+
+static const char *const vs_source =
+"#version 150\n"
+"void main() { gl_Position = vec4(0.0); }\n";
+
+
+static const char *const tcs_source_template =
+"#version 150\n"
+"#extension GL_ARB_tessellation_shader: require\n"
+"layout(vertices = %d) out;\n"
+"void main() {\n"
+"	gl_out[gl_InvocationID].gl_Position = vec4(0.0);\n"
+"	gl_TessLevelOuter = float[4](1.0, 1.0, 1.0, 1.0);\n"
+"	gl_TessLevelInner = float[2](1.0, 1.0);\n"
+"}\n";
+static char *tcs_source;
+
+
+static bool
+test_tcs_params(const int vertices)
+{
+	int v;
+
+	sprintf(tcs_source, tcs_source_template, vertices);
+	prog = piglit_build_simple_program_multiple_shaders(
+			GL_VERTEX_SHADER, vs_source,
+			GL_TESS_CONTROL_SHADER, tcs_source,
+			0);
+
+	glGetProgramiv(prog, GL_TESS_CONTROL_OUTPUT_VERTICES, &v);
+	if (v != vertices) {
+		fprintf(stderr, "GL_TESS_CONTROL_OUTPUT_VERTICES "
+			"is %d, expected %d for program \n%s\n",
+			v, vertices, tcs_source);
+		return false;
+	}
+
+	return true;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+	bool pass = true;
+	int i, max_vertices;
+	static const int vertices[] = {1, 2, 3, 4, 8, 16, 32};
+
+	piglit_require_extension("GL_ARB_tessellation_shader");
+
+	tcs_source = malloc(strlen(tcs_source_template) + 16);
+
+	for (i = 0; i < ARRAY_SIZE(vertices); ++i) {
+		pass = test_tcs_params(vertices[i]) && pass;
+	}
+
+	glGetIntegerv(GL_MAX_PATCH_VERTICES, &max_vertices);
+	pass = test_tcs_params(max_vertices) && pass;
+
+	free(tcs_source);
+
+	pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+
+	piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}
+
+
+enum piglit_result
+piglit_display(void)
+{
+	return PIGLIT_PASS;
+}
+
-- 
1.8.3.2