arb_tessellation_shader: Test global layout qualifiers.

Test declaring layout qualifiers in multiple shader objects and check for
linking arrays if qualifiers mismatch.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

3 files changed, 262 insertions, 0 deletions

diff --git a/tests/all.py b/tests/all.py
index 087a7c5ac..de0342f54 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -1701,6 +1701,7 @@ with profile.group_manager(
        os.path.join(TESTS_DIR, 'spec', 'arb_tessellation_shader',
                     'minimum-maximums.txt')],
       'built-in-constants')
+    g(['arb_tessellation_shader-layout-mismatch'])
 
 # Group ARB_texture_multisample
 with profile.group_manager(
diff --git a/tests/spec/arb_tessellation_shader/CMakeLists.gl.txt b/tests/spec/arb_tessellation_shader/CMakeLists.gl.txt
index a8972055d..83cfd8967 100644
--- a/tests/spec/arb_tessellation_shader/CMakeLists.gl.txt
+++ b/tests/spec/arb_tessellation_shader/CMakeLists.gl.txt
@@ -16,5 +16,6 @@ piglit_add_executable (arb_tessellation_shader-invalid-get-program-params invali
 piglit_add_executable (arb_tessellation_shader-invalid-patch-vertices-range invalid-patch-vertices-range.c)
 piglit_add_executable (arb_tessellation_shader-invalid-primitive invalid-primitive.c)
 piglit_add_executable (arb_tessellation_shader-minmax minmax.c)
+piglit_add_executable (arb_tessellation_shader-layout-mismatch layout-mismatch.c)
 
 # vim: ft=cmake:
diff --git a/tests/spec/arb_tessellation_shader/layout-mismatch.c b/tests/spec/arb_tessellation_shader/layout-mismatch.c
new file mode 100644
index 000000000..e75d36678
--- /dev/null
+++ b/tests/spec/arb_tessellation_shader/layout-mismatch.c
@@ -0,0 +1,260 @@
+/*
+ * 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 layout-mismatch.c
+ *
+ * Link multiple shader objects with layout qualifiers and check that linking
+ * fails or succeeds if the qualifiers mismatch or match, respectively.
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_compat_version = 32;
+	config.supports_gl_core_version = 32;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+
+static const char *const vs_source =
+"#version 150\n"
+"void main() { gl_Position = vec4(0.0); }\n";
+
+static const char *const tcs_source_main =
+"#version 150\n"
+"#extension GL_ARB_tessellation_shader: require\n"
+"layout(vertices = 3) out;\n"
+"void main() {\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 const char *const tcs_source_main_no_v =
+"#version 150\n"
+"#extension GL_ARB_tessellation_shader: require\n"
+"void main() {\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 const char *const tes_source_main =
+"#version 150\n"
+"#extension GL_ARB_tessellation_shader: require\n"
+"layout(triangles) in;\n"
+"void main() { gl_Position = vec4(0.0); }\n";
+
+static const char *const tes_source_main_no_pm =
+"#version 150\n"
+"#extension GL_ARB_tessellation_shader: require\n"
+"void main() { gl_Position = vec4(0.0); }\n";
+
+static const char *const fs_source =
+"#version 150\n"
+"void main() { gl_FragColor = 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"
+"int foo%d(void) { return 1; }\n";
+
+static const char *const tes_source_template =
+"#version 150\n"
+"#extension GL_ARB_tessellation_shader: require\n"
+"layout(%s) in;\n"
+"int foo%d(void) { return 1; }\n";
+
+
+static const char *const prim_mode[] = {
+	"triangles", "quads", "isolines"
+};
+static const char *const spacing[] = {
+	"triangles, equal_spacing",
+	"triangles, fractional_even_spacing",
+	"triangles, fractional_odd_spacing"
+};
+static const char *const vertex_order[] = {
+	"triangles, cw", "triangles, ccw"
+};
+
+static char *tes_source1, *tes_source2;
+static char *tcs_source1, *tcs_source2;
+
+static bool
+test_tcs_layout(const int i, const int j)
+{
+	unsigned int prog;
+	bool link_status;
+
+	sprintf(tcs_source1, tcs_source_template, i, 1);
+	sprintf(tcs_source2, tcs_source_template, j, 2);
+
+	prog = piglit_build_simple_program_unlinked_multiple_shaders(
+			GL_VERTEX_SHADER, vs_source,
+			GL_TESS_CONTROL_SHADER, tcs_source_main_no_v,
+			GL_TESS_CONTROL_SHADER, tcs_source1,
+			GL_TESS_CONTROL_SHADER, tcs_source2,
+			GL_TESS_EVALUATION_SHADER, tes_source_main,
+			GL_FRAGMENT_SHADER, fs_source,
+			0);
+	glLinkProgram(prog);
+	link_status = piglit_link_check_status_quiet(prog);
+	glDeleteProgram(prog);
+
+	if (link_status && (i != j)) {
+		fprintf(stderr, "Program with different vertices "
+			"specifications linked succesfully\n");
+		return false;
+	}
+	if (!link_status && (i == j)) {
+		fprintf(stderr, "Program with identical vertices "
+			"specifications failed to link\n");
+		return false;
+	}
+
+	return true;
+}
+
+
+static bool
+test_tes_layout(const char *const layout1, const char *const layout2,
+		const char *const layout_name)
+{
+	unsigned int prog;
+	bool link_status;
+
+	sprintf(tes_source1, tes_source_template, layout1, 1);
+	sprintf(tes_source2, tes_source_template, layout2, 2);
+
+	prog = piglit_build_simple_program_unlinked_multiple_shaders(
+			GL_VERTEX_SHADER, vs_source,
+			GL_TESS_CONTROL_SHADER, tcs_source_main,
+			GL_TESS_EVALUATION_SHADER, tes_source_main_no_pm,
+			GL_TESS_EVALUATION_SHADER, tes_source1,
+			GL_TESS_EVALUATION_SHADER, tes_source2,
+			GL_FRAGMENT_SHADER, fs_source,
+			0);
+	glLinkProgram(prog);
+	link_status = piglit_link_check_status_quiet(prog);
+	glDeleteProgram(prog);
+
+	if (link_status && (layout1 != layout2)) {
+		fprintf(stderr, "Program with different %s "
+			"specifications linked succesfully\n", layout_name);
+		return false;
+	}
+	if (!link_status && (layout1 == layout2)) {
+		fprintf(stderr, "Program with identical %s "
+			"specifications failed to link\n", layout_name);
+		return false;
+	}
+
+	return true;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+	bool pass = true;
+	int i, j;
+
+	piglit_require_extension("GL_ARB_tessellation_shader");
+
+	/* From the ARB_tessellation_shader spec (Section 2.14.2):
+	 *
+	 *  "Linking will fail if the program object contains objects to form
+	 *  a tessellation control shader (see section 2.X.1), and
+	 *
+	 *  [...]
+	 *
+	 *    * the output patch vertex count is specified differently in
+	 *      multiple
+	 *      tessellation control shader objects."
+	 */
+	tcs_source1 = malloc(strlen(tcs_source_template) + 8);
+	tcs_source2 = malloc(strlen(tcs_source_template) + 8);
+
+	for(i = 1; i < 32; i *= 4) {
+		for(j = 1; j < 32; j *= 4) {
+			pass = test_tcs_layout(i, j) && pass;
+		}
+	}
+
+	free(tcs_source1);
+	free(tcs_source2);
+
+	/* From the ARB_tessellation_shader spec (Section 2.14.2):
+	 *
+	 *  "Linking will fail if the program object contains objects to form
+	 *  a tessellation evaluation shader (see section 2.X.3), and
+	 *
+	 *  [...]
+	 *
+	 *    * the tessellation primitive mode, spacing, vertex order, or
+	 *      point mode is specified differently in multiple tessellation
+	 *      evaluation shader objects."
+	 */
+	tes_source1 = malloc(strlen(tes_source_template) + 64);
+	tes_source2 = malloc(strlen(tes_source_template) + 64);
+
+	for(i = 0; i < ARRAY_SIZE(prim_mode); ++i) {
+		for(j = 0; j < ARRAY_SIZE(prim_mode); ++j) {
+			pass = test_tes_layout(prim_mode[i], prim_mode[j],
+					       "primitive mode") && pass;
+		}
+	}
+
+	for(i = 0; i < ARRAY_SIZE(spacing); ++i) {
+		for(j = 0; j < ARRAY_SIZE(spacing); ++j) {
+			pass = test_tes_layout(spacing[i], spacing[j],
+					       "vertex spacing") && pass;
+		}
+	}
+
+	for(i = 0; i < ARRAY_SIZE(vertex_order); ++i) {
+		for(j = 0; j < ARRAY_SIZE(vertex_order); ++j) {
+			pass = test_tes_layout(vertex_order[i],
+					       vertex_order[j],
+					       "vertex order") && pass;
+		}
+	}
+
+	free(tes_source1);
+	free(tes_source2);
+
+	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;
+}
+