[Piglit] [PATCH] Add test to verify scaled blitting of {texture, renderbuffer} attachments produce same output
Anuj Phogat
anuj.phogat at gmail.com
Mon Aug 5 15:13:14 PDT 2013
This test verifies that same output is produced by scaled blitting
of texture or renderbuffer color attachments with GL_LINEAR filter.
It compares the output from following rendering
scenarios:
1. Scaled blit using a single-sampled framebuffer with texture
attachment.
2. Scaled blit using a single-sampled framebuffer with renderbuffer
attachment.
Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
tests/all.tests | 1 +
.../ext_framebuffer_multisample/CMakeLists.gl.txt | 1 +
.../attachments-blit-scaled-linear.cpp | 163 +++++++++++++++++++++
3 files changed, 165 insertions(+)
create mode 100644 tests/spec/ext_framebuffer_multisample/attachments-blit-scaled-linear.cpp
diff --git a/tests/all.tests b/tests/all.tests
index 07961b5..932f5ea 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -1101,6 +1101,7 @@ for format in ('rgba', 'depth', 'stencil'):
add_plain_test(arb_framebuffer_object, 'fbo-alpha')
add_plain_test(arb_framebuffer_object, 'fbo-blit-stretch')
add_plain_test(arb_framebuffer_object, 'fbo-blit-scaled-linear')
+add_plain_test(arb_framebuffer_object, 'attachments-blit-scaled-linear')
add_plain_test(arb_framebuffer_object, 'fbo-deriv')
add_plain_test(arb_framebuffer_object, 'fbo-luminance-alpha')
add_plain_test(arb_framebuffer_object, 'fbo-getframebufferattachmentparameter-01')
diff --git a/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt b/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt
index db26758..cf8a164 100644
--- a/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt
+++ b/tests/spec/ext_framebuffer_multisample/CMakeLists.gl.txt
@@ -25,6 +25,7 @@ piglit_add_executable (ext_framebuffer_multisample-bitmap common.cpp bitmap.cpp)
piglit_add_executable (ext_framebuffer_multisample-blit-flipped common.cpp blit-flipped.cpp)
piglit_add_executable (ext_framebuffer_multisample-blit-scaled common.cpp blit-scaled.cpp)
piglit_add_executable (fbo-blit-scaled-linear common.cpp blit-scaled-linear.cpp)
+piglit_add_executable (fbo-attachments-blit-scaled-linear common.cpp attachments-blit-scaled-linear.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)
piglit_add_executable (ext_framebuffer_multisample-blit-mismatched-formats common.cpp blit-mismatched-formats.cpp)
diff --git a/tests/spec/ext_framebuffer_multisample/attachments-blit-scaled-linear.cpp b/tests/spec/ext_framebuffer_multisample/attachments-blit-scaled-linear.cpp
new file mode 100644
index 0000000..bb4b2e5
--- /dev/null
+++ b/tests/spec/ext_framebuffer_multisample/attachments-blit-scaled-linear.cpp
@@ -0,0 +1,163 @@
+/*
+ * Copyright © 2013 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 attachments-blit-scaled-linear.cpp
+ *
+ * This test verifies that same output is produced by scaled blitting
+ * of texture or renderbuffer color attachments with GL_LINEAR filter.
+ * It compares the output from following rendering scenarios:
+ * 1. Scaled blit using a single-sampled framebuffer with texture attachment.
+ * 2. Scaled blit using a single-sampled framebuffer with renderbuffer
+ * attachment.
+ */
+
+#include "common.h"
+const int pattern_width = 258; const int pattern_height = 258;
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_compat_version = 10;
+
+ config.window_width = pattern_width * 2;
+ config.window_height = pattern_height;
+ config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static TestPattern *test_pattern;
+const int srcX0 = 6, srcY0 = 7, dstX0 = 0, dstY0 = 0;
+const int srcX1 = pattern_width / 2, srcY1 = pattern_height / 2;
+static Fbo fbo_tex, fbo_rb, fbo;
+
+void
+piglit_init(int argc, char **argv)
+{
+ piglit_require_gl_version(21);
+ piglit_require_extension("GL_ARB_vertex_array_object");
+ fbo.setup(FboConfig(0, 2 * pattern_width, pattern_height));
+ /* Create two singlesample FBOs with same format and dimensions but
+ * different color attachment types.
+ */
+ FboConfig Config(0, pattern_width, pattern_height);
+ Config.attach_texture = true;
+ fbo_tex.setup(Config);
+ Config.attach_texture = false;
+ fbo_rb.setup(Config);
+
+ test_pattern = new Triangles();
+ test_pattern->compile();
+
+ if (!piglit_check_gl_error(GL_NO_ERROR)) {
+ piglit_report_result(PIGLIT_FAIL);
+ }
+}
+
+bool test_blit_scaled_linear()
+{
+ GLfloat scale;
+ GLint samples;
+ bool pass = true, result = true;
+
+ /* Draw the test pattern into the framebuffer with texture
+ * attachment.
+ */
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo_tex.handle);
+ glViewport(0, 0, srcX1, srcY1);
+ glGetIntegerv(GL_SAMPLES, &samples);
+ glClear(GL_COLOR_BUFFER_BIT);
+ test_pattern->draw(TestPattern::no_projection);
+
+ /* Blit the framebuffer with texture attachment into the
+ * framebuffer with renderbuffer attachment without scaling.
+ */
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo_tex.handle);
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo_rb.handle);
+ glClear(GL_COLOR_BUFFER_BIT);
+ glBlitFramebuffer(0, 0,
+ fbo_tex.config.width,
+ fbo_tex.config.height,
+ 0, 0,
+ fbo_tex.config.width,
+ fbo_tex.config.height,
+ GL_COLOR_BUFFER_BIT, GL_NEAREST);
+
+ for(scale = 0.1; scale < 2.5f; scale += 0.1) {
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ /* Do scaled blit of fbo_tex to left half of fbo */
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo_tex.handle);
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo.handle);
+ glClearColor(0.0, 1.0, 0.0, 1.0);
+ glClear(GL_COLOR_BUFFER_BIT);
+ glClearColor(0.0, 0.0, 0.0, 0.0);
+ glEnable(GL_SCISSOR_TEST);
+ glScissor(0, 0, pattern_width, pattern_height);
+ glBlitFramebuffer(srcX0, srcY0,
+ srcX1, srcY1,
+ dstX0, dstY0,
+ dstX0 + srcX1 * scale, dstY0 + srcY1 * scale,
+ GL_COLOR_BUFFER_BIT,
+ GL_LINEAR);
+ glDisable(GL_SCISSOR_TEST);
+
+ /* Do scaled blit of fbo_rb to right half of fbo */
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo_rb.handle);
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo.handle);
+ glBlitFramebuffer(srcX0, srcY0,
+ srcX1, srcY1,
+ pattern_width + dstX0, dstY0,
+ pattern_width + dstX0 + srcX1 * scale,
+ dstY0 + srcY1 * scale,
+ GL_COLOR_BUFFER_BIT,
+ GL_LINEAR);
+
+ pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo.handle);
+ result = piglit_probe_rect_halves_equal_rgba(0, 0,
+ piglit_width,
+ piglit_height);
+ pass = result && pass;
+
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo.handle);
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
+ glBlitFramebuffer(0, 0, 2 * pattern_width, piglit_height,
+ 0, 0, 2 * pattern_width, piglit_height,
+ GL_COLOR_BUFFER_BIT, GL_NEAREST);
+ piglit_present_results();
+ printf("scale = %f, result = %s\n",
+ scale, result ? "pass" : "fail");
+ }
+ return pass;
+}
+
+enum piglit_result
+piglit_display()
+{
+ bool pass = true;
+ printf("Left Image: Linear scaled blit using texture attachment.\n"
+ "Right Image: Linear scaled blit using renderbuffer attachment.\n");
+ pass = test_blit_scaled_linear()
+ && pass;
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
--
1.8.1.4
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