[Piglit] [PATCH 4/4] Add test to verify blitting to multiple render targets
Anuj Phogat
anuj.phogat at gmail.com
Fri May 9 12:42:25 PDT 2014
Blitting is expected to happen in to all the draw buffers set
using glDrawBuffers().
Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
tests/all.py | 6 +
.../ext_framebuffer_multisample/CMakeLists.gl.txt | 1 +
.../blit-multiple-render-targets.cpp | 170 +++++++++++++++++++++
3 files changed, 177 insertions(+)
create mode 100644 tests/spec/ext_framebuffer_multisample/blit-multiple-render-targets.cpp
diff --git a/tests/all.py b/tests/all.py
index a67e725..94102df 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -2474,6 +2474,12 @@ for num_samples in MSAA_SAMPLE_COUNTS:
ext_framebuffer_multisample[test_name] = concurrent_test(
executable)
+for num_samples in TEST_SAMPLE_COUNTS:
+ test_name = ' '.join(['blit-multiple-render-targets', str(num_samples)])
+ executable = 'ext_framebuffer_multisample-{0}'.format(
+ test_name)
+ ext_framebuffer_multisample[test_name] = concurrent_test(executable)
+
# Note: the interpolation tests also check for sensible behaviour with
# non-multisampled framebuffers, so go ahead and test them with
# num_samples==0 as well.
diff --git a/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt b/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt
index a50f7e3..d16762e 100644
--- a/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt
+++ b/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt
@@ -24,6 +24,7 @@ piglit_add_executable (ext_framebuffer_multisample-alpha-to-one-msaa-disabled co
piglit_add_executable (ext_framebuffer_multisample-alpha-to-one-single-sample-buffer common.cpp
draw-buffers-common.cpp alpha-to-one-single-sample-buffer.cpp)
piglit_add_executable (ext_framebuffer_multisample-bitmap common.cpp bitmap.cpp)
+piglit_add_executable (ext_framebuffer_multisample-blit-multiple-render-targets blit-multiple-render-targets.cpp)
piglit_add_executable (ext_framebuffer_multisample-blit-flipped common.cpp blit-flipped.cpp)
piglit_add_executable (ext_framebuffer_multisample-blit-mismatched-samples common.cpp blit-mismatched-samples.cpp)
piglit_add_executable (ext_framebuffer_multisample-blit-mismatched-sizes common.cpp blit-mismatched-sizes.cpp)
diff --git a/tests/spec/ext_framebuffer_multisample/blit-multiple-render-targets.cpp b/tests/spec/ext_framebuffer_multisample/blit-multiple-render-targets.cpp
new file mode 100644
index 0000000..219d3a0
--- /dev/null
+++ b/tests/spec/ext_framebuffer_multisample/blit-multiple-render-targets.cpp
@@ -0,0 +1,170 @@
+/*
+ * Copyright © 2014 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 blit-multiple-render-targets.cpp
+ *
+ * This test verifies that glBlitFramebuffer() works as expected in case of
+ * multiple render targets.
+ *
+ * From Section 4.3.2, page 268 of OpenGL 4.0 spec:
+ *
+ * "When the color buffer is transferred, values are taken from the read
+ * buffer of the read framebuffer and written to each of the draw buffers
+ * of the draw framebuffer."
+ **/
+
+#include "piglit-fbo.h"
+using namespace piglit_util_fbo;
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_compat_version = 10;
+ config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static Fbo multisample_fbo;
+
+void
+print_usage_and_exit(char *prog_name)
+{
+ printf("Usage: %s <num_samples>\n", prog_name);
+ piglit_report_result(PIGLIT_FAIL);
+}
+
+
+extern "C" void
+piglit_init(int argc, char **argv)
+{
+ if (argc != 2)
+ print_usage_and_exit(argv[0]);
+
+ /* 1st arg: num_samples */
+ char *endptr = NULL;
+ int num_samples = strtol(argv[1], &endptr, 0);
+ if (endptr != argv[1] + strlen(argv[1]))
+ print_usage_and_exit(argv[0]);
+
+ piglit_require_extension("GL_ARB_framebuffer_object");
+
+ /* Skip the test if num_samples > GL_MAX_SAMPLES */
+ GLint max_samples;
+ glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
+ if (num_samples > max_samples)
+ piglit_report_result(PIGLIT_SKIP);
+
+ FboConfig Config(num_samples, piglit_width, piglit_height);
+
+ /* Setup fbo with renderbuffer and texture attachments */
+ Config.num_rb_attachments = 2;
+ Config.rb_attachment[0] = GL_COLOR_ATTACHMENT0;
+ Config.rb_attachment[1] = GL_COLOR_ATTACHMENT1;
+
+ Config.num_tex_attachments = 4;
+ for (int i = 0; i < Config.num_tex_attachments; i++)
+ Config.tex_attachment[i] = GL_COLOR_ATTACHMENT2 + i;
+
+ multisample_fbo.setup(Config);
+
+ if (!piglit_check_gl_error(GL_NO_ERROR)) {
+ piglit_report_result(PIGLIT_FAIL);
+ }
+}
+
+extern "C" enum piglit_result
+piglit_display()
+{
+ bool pass = true;
+ const GLenum bufs[] =
+ {GL_COLOR_ATTACHMENT1,
+ GL_COLOR_ATTACHMENT4,
+ GL_COLOR_ATTACHMENT5,
+
+ GL_COLOR_ATTACHMENT0,
+ GL_COLOR_ATTACHMENT2,
+ GL_COLOR_ATTACHMENT3};
+
+ const float expected[][4] =
+ {{0.0, 1.0, 0.0, 1.0}, /* GL_COLOR_ATTACHMENT1 */
+ {0.0, 1.0, 0.0, 1.0}, /* GL_COLOR_ATTACHMENT4 */
+ {0.0, 1.0, 0.0, 1.0}, /* GL_COLOR_ATTACHMENT5 */
+
+ {0.0, 0.0, 1.0, 1.0}, /* GL_COLOR_ATTACHMENT0 */
+ {0.0, 0.0, 1.0, 1.0}, /* GL_COLOR_ATTACHMENT2 */
+ {0.0, 0.0, 1.0, 1.0}};/* GL_COLOR_ATTACHMENT3 */
+
+ /* Clear piglit_winsys_fbo to green color */
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
+ glClearColor(0.0, 1.0, 0.0, 1.0);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ /* Clear all color attachements of multisample_fbo to blue color */
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, multisample_fbo.handle);
+ glDrawBuffers(6, bufs);
+ glClearColor(0.0, 0.0, 1.0, 1.0);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ /* Set the draw buffers for BlitFramebuffer */
+ glDrawBuffers(3, bufs);
+
+ /* Blit from piglit_winsys_fbo to multisample_fbo. Blitting should
+ * happen in to all the draw buffers set above.
+ */
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, piglit_winsys_fbo);
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, multisample_fbo.handle);
+ glBlitFramebuffer(0, 0, piglit_width, piglit_height,
+ 0, 0, piglit_width, piglit_height,
+ GL_COLOR_BUFFER_BIT,
+ GL_NEAREST);
+
+ for (unsigned i = 0; i < ARRAY_SIZE(bufs); i++) {
+ bool result =true;
+
+ /* Resolve the contents of multisample_fbo in to
+ * piglit_winsys_fbo.
+ */
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, multisample_fbo.handle);
+ glReadBuffer(bufs[i]);
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
+ glClearColor(0.0, 0.0, 0.0, 1.0);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ glBlitFramebuffer(0, 0, piglit_width, piglit_height,
+ 0, 0, piglit_width, piglit_height,
+ GL_COLOR_BUFFER_BIT,
+ GL_NEAREST);
+
+ /* Verify the contents */
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, piglit_winsys_fbo);
+ result = piglit_probe_rect_rgba(0, 0, piglit_width,
+ piglit_height, expected[i]);
+ pass = result && pass;
+ printf("Attachment = GL_COLOR_ATTACHMENT%d, Result = %s\n",
+ bufs[i] - GL_COLOR_ATTACHMENT0,
+ result ? "pass" : "fail");
+ piglit_present_results();
+ }
+
+ pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
--
1.8.3.1
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