[Piglit] [PATCH 06/15] arb_tessellation_shader: Test evaluation layout getters.

[Fabian Bieler]

Use glGetProgramiv() to test tessellation evaluation shader input layouts.
Both explicitly specified layouts as well as default layouts are tested.

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-tes-params.c  | 167 +++++++++++++++++++++
 3 files changed, 169 insertions(+)
 create mode 100644 tests/spec/arb_tessellation_shader/get-tes-params.c

diff --git a/tests/all.py b/tests/all.py
index 48e158a..278930a 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-tes-params')
 
 # Group ARB_texture_multisample
 samplers_atm = ['sampler2DMS', 'isampler2DMS', 'usampler2DMS',
diff --git a/tests/spec/arb_tessellation_shader/CMakeLists.gl.txt b/tests/spec/arb_tessellation_shader/CMakeLists.gl.txt
index 60419a9..1b85ba4 100644
--- a/tests/spec/arb_tessellation_shader/CMakeLists.gl.txt
+++ b/tests/spec/arb_tessellation_shader/CMakeLists.gl.txt
@@ -10,5 +10,6 @@ link_libraries (
 )
 
 piglit_add_executable (arb_tessellation_shader-get get.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-tes-params.c b/tests/spec/arb_tessellation_shader/get-tes-params.c
new file mode 100644
index 0000000..d4fa416
--- /dev/null
+++ b/tests/spec/arb_tessellation_shader/get-tes-params.c
@@ -0,0 +1,167 @@
+/*
+ * 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-tes-params.c
+ *
+ * Test tessellation evaluation 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 struct {
+	GLenum prim_mode;
+	GLenum vertex_spacing;
+	GLenum ordering;
+	GLenum point_mode;
+	const char *source;
+} tes_params[] = {
+	{GL_QUADS, GL_EQUAL, GL_CCW, GL_FALSE,
+"#version 150\n"
+"#extension GL_ARB_tessellation_shader: require\n"
+"layout(quads) in;\n"
+"void main() { gl_Position = vec4(0.0); }\n"},
+
+	{GL_TRIANGLES, GL_EQUAL, GL_CCW, GL_FALSE,
+"#version 150\n"
+"#extension GL_ARB_tessellation_shader: require\n"
+"layout(triangles) in;\n"
+"void main() { gl_Position = vec4(0.0); }\n"},
+
+	{GL_ISOLINES, GL_EQUAL, GL_CCW, GL_FALSE,
+"#version 150\n"
+"#extension GL_ARB_tessellation_shader: require\n"
+"layout(isolines) in;\n"
+"void main() { gl_Position = vec4(0.0); }\n"},
+
+	{GL_QUADS, GL_FRACTIONAL_ODD, GL_CCW, GL_FALSE,
+"#version 150\n"
+"#extension GL_ARB_tessellation_shader: require\n"
+"layout(quads, fractional_odd_spacing) in;\n"
+"void main() { gl_Position = vec4(0.0); }\n"},
+
+	{GL_QUADS, GL_FRACTIONAL_EVEN, GL_CCW, GL_FALSE,
+"#version 150\n"
+"#extension GL_ARB_tessellation_shader: require\n"
+"layout(quads, fractional_even_spacing) in;\n"
+"void main() { gl_Position = vec4(0.0); }\n"},
+
+	{GL_QUADS, GL_EQUAL, GL_CW, GL_FALSE,
+"#version 150\n"
+"#extension GL_ARB_tessellation_shader: require\n"
+"layout(quads, cw) in;\n"
+"void main() { gl_Position = vec4(0.0); }\n"},
+
+	{GL_QUADS, GL_EQUAL, GL_CCW, GL_TRUE,
+"#version 150\n"
+"#extension GL_ARB_tessellation_shader: require\n"
+"layout(quads, point_mode) in;\n"
+"void main() { gl_Position = vec4(0.0); }\n"},
+};
+
+
+static bool
+test_param(GLenum pname, GLenum expected_value, const char *const source)
+{
+	int v;
+
+	glGetProgramiv(prog, pname, &v);
+	if (v == expected_value)
+		return true;
+
+	fprintf(stderr, "%s is %s, expected %s for program \n%s\n",
+		piglit_get_gl_enum_name(pname),
+		piglit_get_gl_enum_name(v),
+		piglit_get_gl_enum_name(expected_value), source);
+	return false;
+}
+
+
+static bool
+test_tes_params(void)
+{
+	bool pass = true;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(tes_params); ++i) {
+		prog = piglit_build_simple_program_multiple_shaders(
+				GL_VERTEX_SHADER, vs_source,
+				GL_TESS_EVALUATION_SHADER, tes_params[i].source,
+				0);
+
+		pass = test_param(GL_TESS_GEN_MODE,
+				  tes_params[i].prim_mode,
+				  tes_params[i].source) && pass;
+		pass = test_param(GL_TESS_GEN_SPACING,
+				  tes_params[i].vertex_spacing,
+				  tes_params[i].source) && pass;
+		pass = test_param(GL_TESS_GEN_VERTEX_ORDER,
+				  tes_params[i].ordering,
+				  tes_params[i].source) && pass;
+		pass = test_param(GL_TESS_GEN_POINT_MODE,
+				  tes_params[i].point_mode,
+				  tes_params[i].source) && pass;
+
+		glDeleteProgram(prog);
+	}
+	return pass;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+	bool pass = true;
+
+	piglit_require_extension("GL_ARB_tessellation_shader");
+
+	pass = test_tes_params() && pass;
+
+	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