[Piglit] [PATCH] Add test to verify glCopyPixels()

[Anuj Phogat]

This test varifies glCopyPixels() with GL_COLOR, GL_DEPTH and GL_STENCIL
v2:  Defined few local variables for x,y positions and width, height

Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
 tests/all.tests                 |    1 +
 tests/general/CMakeLists.gl.txt |    1 +
 tests/general/copy-pixels.c     |  113 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 115 insertions(+), 0 deletions(-)
 create mode 100644 tests/general/copy-pixels.c

diff --git a/tests/all.tests b/tests/all.tests
index a39822a..9a00eeb 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -227,6 +227,7 @@ add_plain_test(general, 'bgra-vert-attrib-pointer')
 add_plain_test(general, 'blendminmax')
 add_plain_test(general, 'blendsquare')
 add_plain_test(general, 'clear-varray-2.0')
+add_plain_test(general, 'copy-pixels')
 add_plain_test(general, 'copypixels-draw-sync')
 add_plain_test(general, 'copypixels-sync')
 add_plain_test(general, 'draw-pixels')
diff --git a/tests/general/CMakeLists.gl.txt b/tests/general/CMakeLists.gl.txt
index c331a5c..355932b 100644
--- a/tests/general/CMakeLists.gl.txt
+++ b/tests/general/CMakeLists.gl.txt
@@ -18,6 +18,7 @@ add_executable (bgra-sec-color-pointer bgra-sec-color-pointer.c)
 add_executable (blendminmax blendminmax.c)
 add_executable (blendsquare blendsquare.c)
 add_executable (clear-varray-2.0 clear-varray-2.0.c)
+add_executable (copy-pixels copy-pixels.c)
 add_executable (copypixels-sync copypixels-sync.c)
 add_executable (copypixels-draw-sync copypixels-draw-sync.c)
 add_executable (draw-pixels draw-pixels.c)
diff --git a/tests/general/copy-pixels.c b/tests/general/copy-pixels.c
new file mode 100644
index 0000000..082e040
--- /dev/null
+++ b/tests/general/copy-pixels.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright © 2011 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 copy-pixels.c
+ *
+ * Test to verify glCopyPixels with GL_COLOR, GL_DEPTH and GL_STENCIL
+ *
+ * Author: Anuj Phogat
+ */
+
+#include "piglit-util.h"
+#include "piglit-framework.h"
+
+#define IMAGE_WIDTH 16
+#define IMAGE_HEIGHT 16
+
+int piglit_width = 32;
+int piglit_height = 32;
+int piglit_window_mode = GLUT_RGBA | GLUT_DOUBLE | GLUT_ALPHA |
+			 GLUT_STENCIL | GLUT_DEPTH;
+
+enum piglit_result
+piglit_display(void)
+{
+	GLint i, j;
+	GLuint width = 16, height = 16;
+	GLint x = 12, y = 12;
+	GLfloat buf[IMAGE_WIDTH][IMAGE_HEIGHT];
+	GLfloat depth_val = 0.75, stencil_val = 2.0;
+	GLfloat green[4] = {0.0, 1.0, 0.0, 0.0};
+	bool pass = true;
+
+	glClearColor(0.0, 0.0, 0.0, 1.0);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	glColor4fv(green);
+	piglit_draw_rect(0, 0, width, height);
+
+	glRasterPos2i(x, y);
+	glCopyPixels(0, 0, width, height, GL_COLOR);
+	pass = pass && piglit_probe_rect_rgba(x, y, width, height, green);
+
+	/* Initialize depth data */
+	for (i = 0; i < IMAGE_HEIGHT; i++) {
+		for(j = 0; j < IMAGE_WIDTH; j++)
+			buf[i][j] = depth_val;
+	}
+
+	glClearDepth(0.0);
+	glClear(GL_DEPTH_BUFFER_BIT);
+	glEnable(GL_DEPTH_TEST);
+	glDepthFunc(GL_ALWAYS);
+
+	glRasterPos2i(0, 0);
+	glDrawPixels(width, height,
+		     GL_DEPTH_COMPONENT, GL_FLOAT, buf);
+	glRasterPos2i(x, y);
+	glCopyPixels(0, 0, width, height, GL_DEPTH);
+	pass = piglit_probe_rect_depth(x, y, width, height, depth_val)
+	       && pass;
+
+	/* Initialize stencil data */
+	for (i = 0; i < IMAGE_HEIGHT; i++) {
+		for(j = 0; j < IMAGE_WIDTH; j++)
+			buf[i][j] = stencil_val;
+	}
+
+	glClearStencil(0.0);
+	glClear(GL_STENCIL_BUFFER_BIT);
+
+	glRasterPos2i(0, 0);
+	glDrawPixels(width, height,
+		     GL_STENCIL_INDEX, GL_FLOAT, buf);
+	glRasterPos2i(x, y);
+	glCopyPixels(0, 0, width, height, GL_STENCIL);
+	pass = piglit_probe_rect_stencil(x, y, width, height, stencil_val)
+	       && pass;
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+	if ((piglit_get_gl_version() < 14) &&
+	    !piglit_is_extension_supported("GL_ARB_window_pos")) {
+		printf("Requires GL 1.4 or GL_ARB_window_pos");
+		piglit_report_result(PIGLIT_SKIP);
+	}
+	piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
+}
-- 
1.7.7.6