[Piglit] [PATCH 1/3] gl-1.1-draw-arrays-start: exercise glDrawArrays with non-zero 'start'

[Brian Paul]

Both with and without display lists.
---
 tests/all.py                          |   1 +
 tests/spec/gl-1.1/CMakeLists.gl.txt   |   1 +
 tests/spec/gl-1.1/draw-arrays-start.c | 121 ++++++++++++++++++++++++++++++++++
 3 files changed, 123 insertions(+)
 create mode 100644 tests/spec/gl-1.1/draw-arrays-start.c

diff --git a/tests/all.py b/tests/all.py
index 2a2c31a..85e1bb0 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -767,6 +767,7 @@ with profile.test_list.group_manager(
     g(['max-texture-size-level'])
     g(['copyteximage', '1D'])
     g(['copyteximage', '2D'])
+    g(['gl-1.1-draw-arrays-start'])
     g(['gl-1.1-read-pixels-after-display-list'])
     g(['gl-1.1-set-vertex-color-after-draw'])
     g(['array-stride'])
diff --git a/tests/spec/gl-1.1/CMakeLists.gl.txt b/tests/spec/gl-1.1/CMakeLists.gl.txt
index a4c9ac0..3fe7e93 100644
--- a/tests/spec/gl-1.1/CMakeLists.gl.txt
+++ b/tests/spec/gl-1.1/CMakeLists.gl.txt
@@ -8,6 +8,7 @@ link_libraries (
 	${OPENGL_gl_LIBRARY}
 )
 
+piglit_add_executable (gl-1.1-draw-arrays-start draw-arrays-start.c)
 piglit_add_executable (gl-1.1-read-pixels-after-display-list read-pixels-after-display-list.c)
 piglit_add_executable (gl-1.1-set-vertex-color-after-draw set-vertex-color-after-draw.c)
 piglit_add_executable (gl-1.1-xor xor.c)
diff --git a/tests/spec/gl-1.1/draw-arrays-start.c b/tests/spec/gl-1.1/draw-arrays-start.c
new file mode 100644
index 0000000..bf1290b
--- /dev/null
+++ b/tests/spec/gl-1.1/draw-arrays-start.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2018 VMware, Inc.
+ *
+ * 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.
+ */
+
+/**
+ * Test glDrawArrays with non-zero start parameter, with and without
+ * display lists.
+ */
+
+#include "piglit-util-gl.h"
+
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+	config.supports_gl_compat_version = 14;
+	config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+	config.khr_no_error_support = PIGLIT_NO_ERRORS;
+PIGLIT_GL_TEST_CONFIG_END
+
+
+static const float verts[][2] = {
+	{ -0.75, -0.25 },
+	{ -0.25, -0.25 },
+	{ -0.25,  0.25 },
+	{ -0.75,  0.25 },
+	{  0.1f, -0.9f },
+	{  0.9f, -0.9f },
+	{  0.9f,  0.9f },
+	{  0.1f,  0.9f }
+};
+
+
+static const float white[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
+static const float black[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
+
+
+static bool
+test(bool use_dlist)
+{
+	GLuint list1 = 0, list2 = 0;
+	bool pass;
+
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	if (use_dlist) {
+		list1 = glGenLists(1);
+		glNewList(list1, GL_COMPILE);
+	}
+
+	glEnableClientState(GL_VERTEX_ARRAY);
+	glVertexPointer(2, GL_FLOAT, 0, verts);
+	glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+	if (use_dlist) {
+		glEndList();
+
+		list2 = glGenLists(1);
+		glNewList(list2, GL_COMPILE);
+	}
+
+	glDrawArrays(GL_TRIANGLE_FAN, 4, 4);
+
+	if (use_dlist) {
+		glEndList();
+
+		glCallList(list1);
+		glCallList(list2);
+
+		glDeleteLists(list1, 1);
+		glDeleteLists(list2, 1);
+	}
+
+	pass = piglit_probe_pixel_rgba(piglit_width*1/4, piglit_height/2,
+				       white);
+	pass = piglit_probe_pixel_rgba(piglit_width*3/4, piglit_height/2,
+				       white) && pass;
+	pass = piglit_probe_pixel_rgba(piglit_width*3/4, 2, black) && pass;
+
+	piglit_present_results();
+
+	if (!pass) {
+		printf("Fail while testing %s\n",
+		       use_dlist ? "display list" : "immediate mode");
+	}
+
+	return true;
+}
+
+
+enum piglit_result
+piglit_display(void)
+{
+	bool pass = test(false);
+	pass = test(true) && pass;
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+	/* nothing */
+}
-- 
2.7.4