[Piglit] [PATCH 5/5] EXT_framebuffer_multisample/negative-readpixels: New test for mesa bug.

[Eric Anholt]

---
 tests/all.tests                                    |    1 +
 .../ext_framebuffer_multisample/CMakeLists.gl.txt  |    1 +
 .../negative-readpixels.c                          |   98 ++++++++++++++++++++
 3 files changed, 100 insertions(+), 0 deletions(-)
 create mode 100644 tests/spec/ext_framebuffer_multisample/negative-readpixels.c

diff --git a/tests/all.tests b/tests/all.tests
index 7fe9dd6..8ca326e 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -1209,6 +1209,7 @@ ext_framebuffer_multisample = Group()
 spec['EXT_framebuffer_multisample'] = ext_framebuffer_multisample
 ext_framebuffer_multisample['dlist'] = concurrent_test('ext_framebuffer_multisample-dlist')
 ext_framebuffer_multisample['negative-max-samples'] = concurrent_test('ext_framebuffer_multisample-negative-max-samples')
+ext_framebuffer_multisample['negative-readpixels'] = concurrent_test('ext_framebuffer_multisample-readpixels')
 ext_framebuffer_multisample['renderbufferstorage-samples'] = concurrent_test('ext_framebuffer_multisample-renderbufferstorage-samples')
 ext_framebuffer_multisample['renderbuffer-samples'] = concurrent_test('ext_framebuffer_multisample-renderbuffer-samples')
 
diff --git a/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt b/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt
index 040acc7..093fe45 100644
--- a/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt
+++ b/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt
@@ -13,5 +13,6 @@ link_libraries (
 
 add_executable (ext_framebuffer_multisample-dlist dlist.c)
 add_executable (ext_framebuffer_multisample-negative-max-samples negative-max-samples.c)
+add_executable (ext_framebuffer_multisample-negative-readpixels negative-readpixels.c)
 add_executable (ext_framebuffer_multisample-renderbuffer-samples renderbuffer-samples.c)
 add_executable (ext_framebuffer_multisample-renderbufferstorage-samples renderbufferstorage-samples.c)
diff --git a/tests/spec/ext_framebuffer_multisample/negative-readpixels.c b/tests/spec/ext_framebuffer_multisample/negative-readpixels.c
new file mode 100644
index 0000000..4b0474c
--- /dev/null
+++ b/tests/spec/ext_framebuffer_multisample/negative-readpixels.c
@@ -0,0 +1,98 @@
+/*
+ * 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.
+ */
+
+#include "piglit-util.h"
+
+/**
+ * @file negative-readpixels.c
+ *
+ * From the EXT_framebuffer_multisample spec:
+ *
+ *     "ReadPixels generates INVALID_OPERATION if
+ *      READ_FRAMEBUFFER_BINDING (section 4.4) is non-zero, the read
+ *      framebuffer is framebuffer complete, and the value of
+ *      SAMPLE_BUFFERS for the read framebuffer is greater than zero."
+ */
+
+int piglit_width = 32;
+int piglit_height = 32;
+int piglit_window_mode = GLUT_DOUBLE | GLUT_RGB | GLUT_ALPHA;
+
+enum piglit_result
+piglit_display(void)
+{
+	/* UNREACHED */
+	return PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	GLint max_samples, sample_buffers;
+	GLuint rb, fb;
+	GLenum status;
+	bool pass = true;
+	float data[4];
+
+	piglit_require_extension("GL_EXT_framebuffer_multisample");
+
+	glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
+	piglit_check_gl_error(0, PIGLIT_FAIL);
+
+	glGenFramebuffersEXT(1, &fb);
+	glBindFramebufferEXT(GL_FRAMEBUFFER, fb);
+
+	glGenRenderbuffersEXT(1, &rb);
+	glBindRenderbufferEXT(GL_RENDERBUFFER, rb);
+	glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER, max_samples,
+					    GL_RGBA, 1, 1);
+
+	glFramebufferRenderbufferEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
+				     GL_RENDERBUFFER, rb);
+
+	glDrawBuffer(GL_COLOR_ATTACHMENT0);
+	glReadBuffer(GL_COLOR_ATTACHMENT0);
+
+	status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER);
+	if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+		fprintf(stderr, "FBO incomplete\n");
+		piglit_report_result(PIGLIT_FAIL);
+	}
+
+	glGetIntegerv(GL_SAMPLE_BUFFERS, &sample_buffers);
+	if (sample_buffers != 1) {
+		fprintf(stderr, "Multisample FBO reported sample_buffers %d\n",
+			sample_buffers);
+		piglit_report_result(PIGLIT_FAIL);
+	}
+
+
+	/* Finally, the actual test! */
+	glReadPixels(0, 0, 1, 1, GL_RGBA, GL_FLOAT, data);
+	piglit_check_gl_error(GL_INVALID_OPERATION, PIGLIT_FAIL);
+
+	glDeleteRenderbuffersEXT(1, &rb);
+	glDeleteFramebuffersEXT(1, &fb);
+
+	piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}
-- 
1.7.7.3