[Piglit] [PATCH] Add test case to verify glDrawBuffer with different color buffer modes
Anuj Phogat
anuj.phogat at gmail.com
Wed Jan 11 14:15:49 PST 2012
This test works by calling glDrawBuffer function for each color buffer mode
and testing the buffer's color value against expected value
Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
v2: Now actually testing the content of color buffers based on drawbuffer mode
v3: Incorporated Ian's suggestions
v4: Changes suggested by Eric
tests/all.tests | 1 +
tests/bugs/CMakeLists.gl.txt | 1 +
tests/bugs/drawbuffer-modes.c | 163 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 165 insertions(+), 0 deletions(-)
create mode 100644 tests/bugs/drawbuffer-modes.c
diff --git a/tests/all.tests b/tests/all.tests
index 8a3c96d..b800fd2 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -552,6 +552,7 @@ shaders['vpfp-generic'] = vpfpgeneric
bugs = Group()
add_plain_test(bugs, 'crash-cubemap-order')
add_plain_test(bugs, 'crash-texparameter-before-teximage')
+add_plain_test(bugs, 'drawbuffer-modes')
add_plain_test(bugs, 'fdo9833')
add_plain_test(bugs, 'fdo10370')
add_plain_test(bugs, 'fdo14575')
diff --git a/tests/bugs/CMakeLists.gl.txt b/tests/bugs/CMakeLists.gl.txt
index bce0532..5c1864e 100644
--- a/tests/bugs/CMakeLists.gl.txt
+++ b/tests/bugs/CMakeLists.gl.txt
@@ -16,6 +16,7 @@ link_libraries (
add_executable (crash-cubemap-order crash-cubemap-order.c)
add_executable (crash-texparameter-before-teximage crash-texparameter-before-teximage.c)
+add_executable (drawbuffer-modes drawbuffer-modes.c)
add_executable (fdo9833 fdo9833.c)
add_executable (fdo10370 fdo10370.c)
add_executable (fdo14575 fdo14575.c)
diff --git a/tests/bugs/drawbuffer-modes.c b/tests/bugs/drawbuffer-modes.c
new file mode 100644
index 0000000..2407827
--- /dev/null
+++ b/tests/bugs/drawbuffer-modes.c
@@ -0,0 +1,163 @@
+/* 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 drawbuffer-modes.c
+ * Verify the functionality of glDrawBuffer() function with different color
+ * buffer modes in default framebuffer
+ *
+ * This test works by calling glDrawBuffer function for each color buffer mode
+ * and testing the buffer's color value against expected value. All the calls
+ * should ensure no error.
+ *
+ * This test case also verifies the fix for Bug 44153:
+ * https://bugs.freedesktop.org/show_bug.cgi?id=44153
+ *
+ * \Author Yi Sun <yi.sun at intel.com>, Anuj Phogat <anuj.phogat at gmail.com>
+ */
+#include "piglit-util.h"
+int piglit_width = 100, piglit_height = 100;
+int piglit_window_mode = GLUT_RGB | GLUT_DOUBLE;
+
+float color[7][4] = {
+ { 0.1, 0.2, 0.3, 1.0 },
+ { 0.2, 0.3, 0.4, 1.0 },
+ { 0.3, 0.4, 0.5, 1.0 },
+ { 0.4, 0.5, 0.6, 1.0 },
+ { 0.5, 0.6, 0.7, 1.0 },
+ { 0.6, 0.7, 0.8, 1.0 },
+ { 1.0, 1.0, 1.0, 1.0 } };
+
+int bufferlist[] = {
+ GL_FRONT_AND_BACK,
+ GL_BACK, GL_FRONT,
+ GL_LEFT,
+ GL_BACK_LEFT,
+ GL_FRONT_LEFT,
+ GL_NONE };
+
+enum piglit_result
+piglit_display(void)
+{
+ bool pass = true;
+ bool pixel_probe = true;
+ int i;
+ GLfloat probe[4];
+ for ( i = 0; i < ARRAY_SIZE(bufferlist); i++) {
+ glDrawBuffer(bufferlist[i]);
+ glClear(GL_COLOR_BUFFER_BIT);
+ glColor4fv(color[i]);
+ piglit_draw_rect(20, 20, 50, 50);
+ pass = piglit_check_gl_error(GL_NO_ERROR)
+ && pass;
+ switch (bufferlist[i]) {
+ case GL_FRONT_AND_BACK:
+ glReadBuffer(GL_BACK_LEFT);
+ pass = piglit_probe_rect_rgba(20, 20, 50, 50,
+ color[i])
+ && pass;
+ glReadBuffer(GL_FRONT_LEFT);
+ pass = pass &&
+ piglit_probe_rect_rgba(20, 20, 50, 50,
+ color[i]);
+ break;
+ case GL_LEFT:
+ glReadBuffer(GL_BACK_LEFT);
+ pass = piglit_probe_rect_rgba(20, 20, 50, 50,
+ color[i])
+ && pass;
+ glReadBuffer(GL_FRONT_LEFT);
+ pass = piglit_probe_rect_rgba(20, 20, 50, 50,
+ color[i])
+ && pass;
+ break;
+ case GL_BACK:
+ case GL_BACK_LEFT:
+ glReadBuffer(bufferlist[i]);
+ pass = piglit_probe_rect_rgba(20, 20, 50, 50,
+ color[i])
+ && pass;
+ /* This should not modify GL_FRONT_LEFT buffer */
+ glReadBuffer(GL_FRONT_LEFT);
+ pixel_probe = piglit_probe_pixel_rgba_silent(25, 25,
+ color[i],
+ probe);
+ pass = !pixel_probe && pass;
+ if(pixel_probe)
+ printf("glDrawBuffer(GL_BACK) modifies"
+ " GL_FRONT_LEFT buffer\n");
+ break;
+ case GL_FRONT:
+ case GL_FRONT_LEFT:
+ glReadBuffer(bufferlist[i]);
+ pass = piglit_probe_rect_rgba(20, 20, 50, 50,
+ color[i])
+ && pass;
+ /* This should not modify GL_BACK_LEFT buffer */
+ glReadBuffer(GL_BACK_LEFT);
+ pixel_probe = piglit_probe_pixel_rgba_silent(25, 25,
+ color[i],
+ probe);
+ pass = !pixel_probe && pass;
+ if(pixel_probe)
+ printf("glDrawBuffer(GL_FRONT) modifies"
+ " GL_BACK_LEFT buffer\n");
+ break;
+ case GL_NONE:
+ /* Drawing to a buffer GL_NONE should not
+ * modify any existing buffers
+ */
+ glReadBuffer(GL_BACK_LEFT);
+ pixel_probe = piglit_probe_pixel_rgba_silent(25, 25,
+ color[i],
+ probe);
+ pass = !pixel_probe && pass;
+ if(pixel_probe)
+ printf("glDrawBuffer(GL_NONE) modifies"
+ " GL_BACK_LEFT buffer\n");
+ glReadBuffer(GL_FRONT_LEFT);
+ pixel_probe = piglit_probe_pixel_rgba_silent(25, 25,
+ color[i],
+ probe);
+ pass = !pixel_probe && pass;
+ if (pixel_probe)
+ printf("glDrawBuffer(GL_NONE) modifies"
+ " GL_FRONT_LEFT buffer\n");
+ break;
+ }
+ pass = piglit_check_gl_error(GL_NO_ERROR)
+ && pass;
+ }
+ return (pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}
+
+void piglit_init(int argc, char **argv)
+{
+ glMatrixMode(GL_PROJECTION);
+ glPushMatrix();
+ glLoadIdentity();
+ glOrtho(0, piglit_width, 0, piglit_height, -1, 1);
+ glMatrixMode(GL_MODELVIEW);
+ glPushMatrix();
+ glLoadIdentity();
+ glClearColor(0.2, 0.2, 0.2, 1.0);
+}
--
1.7.7.4
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