[Piglit] [PATCH 2/2] SSO: new test to ensure matching with various qualifier

Gregory Hainaut gregory.hainaut at gmail.com
Sun Oct 25 07:07:31 PDT 2015


Test is composed of 2 major steps.

First part ensure that a matching (same on both VS & FS) qualifier doesn't
pertubate the location assignment

Second part ensure that a non-matching qualifier also work. Final interpolation
qualifier is the one of the FS.
Technically it is only allowed from GLSL4.5. However I don't know if any gl
implementation really implement this constraint.

Signed-off-by: Gregory Hainaut <gregory.hainaut at gmail.com>
---
 .../arb_separate_shader_objects/CMakeLists.gl.txt  |   1 +
 .../rendezvous_by_name_interpolation.c             | 210 +++++++++++++++++++++
 2 files changed, 211 insertions(+)
 create mode 100644 tests/spec/arb_separate_shader_objects/rendezvous_by_name_interpolation.c

diff --git a/tests/spec/arb_separate_shader_objects/CMakeLists.gl.txt b/tests/spec/arb_separate_shader_objects/CMakeLists.gl.txt
index 9ab6606..22a04b7 100644
--- a/tests/spec/arb_separate_shader_objects/CMakeLists.gl.txt
+++ b/tests/spec/arb_separate_shader_objects/CMakeLists.gl.txt
@@ -19,5 +19,6 @@ piglit_add_executable (arb_separate_shader_object-rendezvous_by_location rendezv
 piglit_add_executable (arb_separate_shader_object-rendezvous_by_location-3-stages rendezvous_by_location-3-stages.c)
 piglit_add_executable (arb_separate_shader_object-rendezvous_by_location-5-stages rendezvous_by_location-5-stages.c)
 piglit_add_executable (arb_separate_shader_object-rendezvous_by_name rendezvous_by_name.c)
+piglit_add_executable (arb_separate_shader_object-rendezvous_by_name_interpolation rendezvous_by_name_interpolation.c)
 piglit_add_executable (arb_separate_shader_object-UseProgramStages-non-separable UseProgramStages-non-separable.c)
 piglit_add_executable (arb_separate_shader_object-ValidateProgramPipeline ValidateProgramPipeline.c)
diff --git a/tests/spec/arb_separate_shader_objects/rendezvous_by_name_interpolation.c b/tests/spec/arb_separate_shader_objects/rendezvous_by_name_interpolation.c
new file mode 100644
index 0000000..5a99871
--- /dev/null
+++ b/tests/spec/arb_separate_shader_objects/rendezvous_by_name_interpolation.c
@@ -0,0 +1,210 @@
+/*
+ * Copyright © 2015 Gregory Hainaut <gregory.hainaut at gmail.com>
+ *
+ * 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 rendezvous_by_name_interpolation.c
+ * Simple test for separate shader objects that use rendezvous-by-name.
+ *
+ * The test ensures that multiple interpolation qualifier doesn't break
+ * the interface matching.
+ */
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_compat_version = 10;
+	config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static GLuint pipeline_match[4];
+static GLuint pipeline_unmatch[4];
+
+static const char *vs_code_template =
+	"#version %d\n"
+	"#extension GL_ARB_separate_shader_objects: require\n"
+	"#extension GL_ARB_explicit_attrib_location: require\n"
+	"\n"
+	"layout(location = 0) in vec4 piglit_vertex;\n"
+	"\n"
+	"%s out vec4 blue;\n"
+	"%s out vec4 green;\n"
+	"%s out vec4 red;\n"
+	"\n"
+	"void main()\n"
+	"{\n"
+	"    gl_Position = piglit_vertex;\n"
+	"    red   = vec4(1, 0, 0, 0);\n"
+	"    green = vec4(0, 1, 0, 0);\n"
+	"    blue  = vec4(0, 0, 1, 0);\n"
+	"}\n"
+	;
+
+static const char *fs_code_template =
+	"#version %d\n"
+	"#extension GL_ARB_separate_shader_objects: require\n"
+	"#extension GL_ARB_explicit_attrib_location: enable\n"
+	"\n"
+	"#if __VERSION__ >= 130\n"
+	"layout(location = 0) out vec4 out_color;\n"
+	"#else\n"
+	"#define out_color gl_FragColor\n"
+	"#endif\n"
+	"\n"
+	"%s in vec4 blue;\n"
+	"%s in vec4 green;\n"
+	"%s in vec4 red;\n"
+	"\n"
+	"void main()\n"
+	"{\n"
+	"    out_color = vec4(red.r, green.g, blue.b, 1);\n"
+	"}\n"
+	;
+
+static const char *qualifiers[] = {
+	"",
+	"flat",
+	"smooth",
+	"noperspective"
+};
+
+enum piglit_result
+piglit_display(void)
+{
+	static const float expected[] = {
+		1.0f, 1.0f, 1.0f, 1.0f
+	};
+	bool pass = true;
+	int i;
+
+	glClearColor(0.1f, 0.1f, 0.1f, 0.1f);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	for (i = 0; i < 4; i++) {
+		float w = 0.5;
+		float x = -1.0 + w * i;
+		/*
+		 * Match qualifier on bottom row
+		 */
+		glBindProgramPipeline(pipeline_match[i]);
+		piglit_draw_rect(x, -1, w, 1);
+
+		/*
+		 * Unmatch qualifier on top row
+		 */
+		glBindProgramPipeline(pipeline_unmatch[i]);
+		piglit_draw_rect(x, 0, w, 1);
+	}
+
+	pass &= piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height,
+				      expected);
+
+	piglit_present_results();
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+GLuint format_and_link_program(GLenum type, const char* code, unsigned glsl_version,
+		unsigned q1, unsigned q2, unsigned q3)
+{
+	char *source;
+	GLuint prog;
+
+	asprintf(&source, code, glsl_version, qualifiers[q1], qualifiers[q2], qualifiers[q3]);
+	prog = glCreateShaderProgramv(type, 1,
+			(const GLchar *const *) &source);
+
+	piglit_link_check_status(prog);
+	free(source);
+
+	return prog;
+}
+
+void piglit_init(int argc, char **argv)
+{
+	unsigned i;
+	unsigned glsl_version;
+	GLuint vs_prog[4];
+	GLuint fs_prog_match[4];
+	GLuint fs_prog_unmatch[4];
+	bool es;
+	int glsl_major;
+	int glsl_minor;
+
+	piglit_require_vertex_shader();
+	piglit_require_fragment_shader();
+	piglit_require_GLSL_version(130); /* Support layout index on output color */
+	piglit_require_extension("GL_ARB_separate_shader_objects");
+	piglit_require_extension("GL_ARB_explicit_attrib_location");
+	piglit_require_extension("GL_ARB_blend_func_extended");
+
+	/* Some NVIDIA drivers have issues with layout qualifiers, 'in'
+	 * keywords, and 'out' keywords in "lower" GLSL versions.  If the
+	 * driver supports GLSL >= 1.40, use 1.40.  Otherwise, pick the
+	 * highest version that the driver supports.
+	 */
+	piglit_get_glsl_version(&es, &glsl_major, &glsl_minor);
+	glsl_version = ((glsl_major * 100) + glsl_minor) >= 140
+		? 140 : ((glsl_major * 100) + glsl_minor);
+
+	/*
+	 * Program compilation and link
+	 */
+	for (i = 0; i < 4; i++) {
+		int next = (i+1) % 4;
+		int prev = (i-1) % 4;
+		printf("Compile vs_prog[%d]\n", i);
+		vs_prog[i] = format_and_link_program(GL_VERTEX_SHADER,
+				vs_code_template, glsl_version, prev, i, next);
+
+		printf("Compile fs_prog_match[%d]\n", i);
+		fs_prog_match[i] = format_and_link_program(GL_FRAGMENT_SHADER,
+				fs_code_template, glsl_version, prev, i, next);
+
+		printf("Compile fs_prog_unmatch[%d]\n", i);
+		fs_prog_unmatch[i] = format_and_link_program(GL_FRAGMENT_SHADER,
+				fs_code_template, glsl_version, next, prev, i);
+	}
+
+	/*
+	 * Pipeline creation
+	 */
+	glGenProgramPipelines(4, pipeline_match);
+	glGenProgramPipelines(4, pipeline_unmatch);
+	for (i = 0; i < 4; i++) {
+		glBindProgramPipeline(pipeline_match[i]);
+		glUseProgramStages(pipeline_match[i],
+				GL_VERTEX_SHADER_BIT, vs_prog[i]);
+		glUseProgramStages(pipeline_match[i],
+				GL_FRAGMENT_SHADER_BIT, fs_prog_match[i]);
+
+		glBindProgramPipeline(pipeline_unmatch[i]);
+		glUseProgramStages(pipeline_unmatch[i],
+				GL_VERTEX_SHADER_BIT, vs_prog[i]);
+		glUseProgramStages(pipeline_unmatch[i],
+				GL_FRAGMENT_SHADER_BIT, fs_prog_unmatch[i]);
+	}
+
+	if (!piglit_check_gl_error(0))
+		piglit_report_result(PIGLIT_FAIL);
+}
-- 
2.1.4



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