[Piglit] [PATCH] Add test for NV_depth_buffer_float.
Mathias.Froehlich at gmx.net
Mathias.Froehlich at gmx.net
Sun Sep 14 07:09:01 PDT 2014
From: Mathias Froehlich <Mathias.Froehlich at web.de>
Add two tests for NV_depth_buffer_float.
depth-range-nv does a first croase test of negative ranges.
depth-range-nv-precision tests an application use case that
gained a lot of popular attention lately.
Signed-off-by: Mathias Froehlich <Mathias.Froehlich at web.de
---
tests/all.py | 5 +
tests/spec/CMakeLists.txt | 1 +
tests/spec/nv_depth_buffer_float/CMakeLists.gl.txt | 15 ++
tests/spec/nv_depth_buffer_float/CMakeLists.txt | 1 +
.../depth-range-nv-precision.c | 170 +++++++++++++++++++++
tests/spec/nv_depth_buffer_float/depth-range-nv.c | 127 +++++++++++++++
6 files changed, 319 insertions(+)
create mode 100644 tests/spec/nv_depth_buffer_float/CMakeLists.gl.txt
create mode 100644 tests/spec/nv_depth_buffer_float/CMakeLists.txt
create mode 100644 tests/spec/nv_depth_buffer_float/depth-range-nv-precision.c
create mode 100644 tests/spec/nv_depth_buffer_float/depth-range-nv.c
diff --git a/tests/all.py b/tests/all.py
index 6f82f5b..db94f64 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -2331,6 +2331,11 @@ add_depthstencil_render_miplevels_tests(
'ds=z32f_s8'))
arb_depth_buffer_float['fbo-clear-formats stencil'] = concurrent_test('fbo-clear-formats GL_ARB_depth_buffer_float stencil')
+nv_depth_buffer_float = {}
+spec['NV_depth_buffer_float'] = nv_depth_buffer_float
+add_plain_test(nv_depth_buffer_float, 'depth-range-nv')
+add_plain_test(nv_depth_buffer_float, 'depth-range-nv-precision')
+
arb_texture_env_crossbar = {}
spec['ARB_texture_env_crossbar'] = arb_texture_env_crossbar
add_plain_test(arb_texture_env_crossbar, 'crossbar')
diff --git a/tests/spec/CMakeLists.txt b/tests/spec/CMakeLists.txt
index c448fd4..76c11f9 100644
--- a/tests/spec/CMakeLists.txt
+++ b/tests/spec/CMakeLists.txt
@@ -69,6 +69,7 @@ add_subdirectory (ext_texture_swizzle)
add_subdirectory (ext_timer_query)
add_subdirectory (ext_transform_feedback)
add_subdirectory (nv_conditional_render)
+add_subdirectory (nv_depth_buffer_float)
add_subdirectory (nv_texture_barrier)
add_subdirectory (oes_compressed_etc1_rgb8_texture)
add_subdirectory (oes_compressed_paletted_texture)
diff --git a/tests/spec/nv_depth_buffer_float/CMakeLists.gl.txt b/tests/spec/nv_depth_buffer_float/CMakeLists.gl.txt
new file mode 100644
index 0000000..1920b1b
--- /dev/null
+++ b/tests/spec/nv_depth_buffer_float/CMakeLists.gl.txt
@@ -0,0 +1,15 @@
+include_directories(
+ ${GLEXT_INCLUDE_DIR}
+ ${OPENGL_INCLUDE_PATH}
+)
+
+link_libraries (
+ piglitutil_${piglit_target_api}
+ ${OPENGL_gl_LIBRARY}
+ ${OPENGL_glu_LIBRARY}
+)
+
+piglit_add_executable (depth-range-nv depth-range-nv.c)
+piglit_add_executable (depth-range-nv-precision depth-range-nv-precision.c)
+
+# vim: ft=cmake:
diff --git a/tests/spec/nv_depth_buffer_float/CMakeLists.txt b/tests/spec/nv_depth_buffer_float/CMakeLists.txt
new file mode 100644
index 0000000..144a306
--- /dev/null
+++ b/tests/spec/nv_depth_buffer_float/CMakeLists.txt
@@ -0,0 +1 @@
+piglit_include_target_api()
diff --git a/tests/spec/nv_depth_buffer_float/depth-range-nv-precision.c b/tests/spec/nv_depth_buffer_float/depth-range-nv-precision.c
new file mode 100644
index 0000000..3b020a7
--- /dev/null
+++ b/tests/spec/nv_depth_buffer_float/depth-range-nv-precision.c
@@ -0,0 +1,170 @@
+/*
+ * Copyright Mathias Fröhlich <Mathias.Froehlich at web.de>
+ *
+ * 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.
+ *
+ * Authors:
+ * Mathias Fröhlich <Mathias.Froehlich at web.de>
+ */
+
+/** @file depth-range-nv-precision.c
+ *
+ * Test for NV_depth_buffer_float not clamping the near and far values.
+ * This is actually the application level use case setting up a
+ * projection matrix with and infinite far away far plane and a near plane
+ * at 1.
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_compat_version = 20;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+void
+piglit_init(int argc, char **argv)
+{
+ GLdouble projection[16] = { 0.0, };
+
+ piglit_require_extension("GL_NV_depth_buffer_float");
+ piglit_require_extension("GL_EXT_framebuffer_object");
+ piglit_require_extension("GL_EXT_framebuffer_blit");
+
+ /* Set up a projection matrix ranging from -1 to -inf
+ * and mapping this to [-1, 0] in projection space leaving
+ * the [0, 1] range mostly unused.
+ * The basic trick with this is that due to the symmetric
+ * depth range we get the extended precition of the float
+ * for model z values close to -inf.
+ */
+ projection[0 + 4*0] = 1;
+ projection[1 + 4*1] = (GLdouble)piglit_width/piglit_height;
+ projection[2 + 4*3] = -1;
+ projection[3 + 4*2] = -1;
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadMatrixd(projection);
+
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+}
+
+void
+quad(double px, double py, double pz, double size)
+{
+ glBegin(GL_QUADS);
+ glVertex3d(px - 0.5*size, py - 0.5*size, pz);
+ glVertex3d(px + 0.5*size, py - 0.5*size, pz);
+ glVertex3d(px + 0.5*size, py + 0.5*size, pz);
+ glVertex3d(px - 0.5*size, py + 0.5*size, pz);
+ glEnd();
+}
+
+enum piglit_result
+piglit_display(void)
+{
+ GLfloat red[3] = { 1, 0, 0 };
+ GLfloat green[3] = { 0, 1, 0 };
+ GLboolean pass = GL_TRUE;
+ GLuint fb, cb, db;
+ GLenum status;
+ int range10;
+
+ glGenRenderbuffers(1, &cb);
+ glBindRenderbuffer(GL_RENDERBUFFER, cb);
+ glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA, piglit_width, piglit_height);
+ glBindRenderbuffer(GL_RENDERBUFFER, 0);
+
+ glGenRenderbuffers(1, &db);
+ glBindRenderbuffer(GL_RENDERBUFFER, db);
+ glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT32F_NV, piglit_width, piglit_height);
+ glBindRenderbuffer(GL_RENDERBUFFER, 0);
+
+ glGenFramebuffers(1, &fb);
+ glBindFramebuffer(GL_FRAMEBUFFER, fb);
+ glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, cb);
+ glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, db);
+
+ status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+ if (status != GL_FRAMEBUFFER_COMPLETE) {
+ printf("FBO incomplete status 0x%X\n", status);
+ piglit_report_result(PIGLIT_FAIL);
+ }
+
+ /* This is to illustrate the effect of the usual clamped
+ * near far values. If you uncomment the below define, you will
+ * not reliably see the green surfaces before the red ones.
+ */
+/* #define DESTROY_DEPTH_PRECISION */
+#ifndef DESTROY_DEPTH_PRECISION
+ glClearDepthdNV(0);
+ glDepthRangedNV(-1, 1);
+#endif
+ glClearColor(0, 0, 0, 1);
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ glEnable(GL_DEPTH_TEST);
+ glDepthFunc(GL_LESS);
+
+ for (range10 = 0; range10 < 16; ++range10) {
+ int width = piglit_width/4;
+ int height = piglit_height/4;
+ int tilex = range10 % 4;
+ int tiley = range10 / 4;
+ int x = tilex*width;
+ int y = tiley*height;
+ double z = pow(10, 1 + range10);
+
+ /* Set up a new viewport for each deoth we want to test */
+ glViewport(x, y, width, height);
+
+ /* Draw a red surface at given distance z */
+ glColor3fv(red);
+ quad(0, 0, -z, z);
+
+ pass = piglit_probe_pixel_rgb(x + width/2, y + height/2, red) && pass;
+
+ /* And a green one just close in front of that red one */
+ glColor3fv(green);
+ quad(0, 0, (10*FLT_EPSILON - 1)*z, 0.5*z);
+ quad(0, 0, -z, 0.5*z);
+
+ pass = piglit_probe_pixel_rgb(x + width/2, y + height/2, green) && pass;
+ }
+
+ /* copy the result to the back buffer */
+
+ /* set viewport to window size */
+ glViewport(0, 0, piglit_width, piglit_height);
+
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, fb);
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
+ glBlitFramebuffer(0, 0, piglit_width, piglit_height, 0, 0, piglit_width, piglit_height, GL_COLOR_BUFFER_BIT, GL_NEAREST);
+ glBindFramebuffer(GL_FRAMEBUFFER, 0);
+
+ glDeleteFramebuffers(1, &fb);
+ glDeleteRenderbuffers(1, &cb);
+ glDeleteRenderbuffers(1, &db);
+
+ piglit_present_results();
+
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
diff --git a/tests/spec/nv_depth_buffer_float/depth-range-nv.c b/tests/spec/nv_depth_buffer_float/depth-range-nv.c
new file mode 100644
index 0000000..e6abc16
--- /dev/null
+++ b/tests/spec/nv_depth_buffer_float/depth-range-nv.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright Mathias Fröhlich <Mathias.Froehlich at web.de>
+ *
+ * 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.
+ *
+ * Authors:
+ * Mathias Fröhlich <Mathias.Froehlich at web.de>
+ */
+
+/** @file depth-range-nv.c
+ *
+ * Basic test for NV_depth_buffer_float not clamping the near and far values.
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_compat_version = 20;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+void
+piglit_init(int argc, char **argv)
+{
+ piglit_require_extension("GL_NV_depth_buffer_float");
+ piglit_require_extension("GL_EXT_framebuffer_object");
+ piglit_require_extension("GL_EXT_framebuffer_blit");
+
+ piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
+}
+
+void
+quad(float base_x, float base_y, float z)
+{
+ glBegin(GL_QUADS);
+ glVertex3f(base_x, base_y, z);
+ glVertex3f(base_x + 10, base_y, z);
+ glVertex3f(base_x + 10, base_y + 10, z);
+ glVertex3f(base_x, base_y + 10, z);
+ glEnd();
+}
+
+enum piglit_result
+piglit_display(void)
+{
+ GLboolean pass = GL_TRUE;
+
+ GLuint fb, cb, db;
+ glGenRenderbuffers(1, &cb);
+ glBindRenderbuffer(GL_RENDERBUFFER, cb);
+ glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA, 256, 256);
+ glBindRenderbuffer(GL_RENDERBUFFER, 0);
+
+ glGenRenderbuffers(1, &db);
+ glBindRenderbuffer(GL_RENDERBUFFER, db);
+ glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT32F_NV, 256, 256);
+ glBindRenderbuffer(GL_RENDERBUFFER, 0);
+
+ glGenFramebuffers(1, &fb);
+ glBindFramebuffer(GL_FRAMEBUFFER, fb);
+ glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, cb);
+ glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, db);
+
+ GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+ if (status != GL_FRAMEBUFFER_COMPLETE) {
+ printf("FBO incomplete status 0x%X\n", status);
+ piglit_report_result(PIGLIT_FAIL);
+ }
+
+ glClearDepthdNV(-0.5);
+ glClear(GL_DEPTH_BUFFER_BIT);
+ glEnable(GL_DEPTH_TEST);
+ glDepthFunc(GL_ALWAYS);
+
+ glDepthRangedNV(-1, 1);
+ quad(10, 10, -1.0);
+ quad(10, 30, -0.5);
+ quad(10, 50, 0);
+ quad(10, 70, 0.5);
+ quad(10, 90, 1.0);
+
+ /* The clear value */
+ pass = piglit_probe_pixel_depth(5, 5, -0.5) && pass;
+
+ /* The few patches drawn above */
+ pass = piglit_probe_pixel_depth(15, 15, 1.0) && pass;
+ pass = piglit_probe_pixel_depth(15, 35, 0.5) && pass;
+ pass = piglit_probe_pixel_depth(15, 55, 0.0) && pass;
+ pass = piglit_probe_pixel_depth(15, 75, -0.5) && pass;
+ pass = piglit_probe_pixel_depth(15, 95, -1.0) && pass;
+
+ /* copy the result to the back buffer */
+
+ /* set viewport to window size */
+ glViewport(0, 0, piglit_width, piglit_height);
+
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, fb);
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
+ glBlitFramebuffer(0, 0, piglit_width, piglit_height, 0, 0, piglit_width, piglit_height, GL_COLOR_BUFFER_BIT, GL_NEAREST);
+ glBindFramebuffer(GL_FRAMEBUFFER, 0);
+
+ glDeleteFramebuffers(1, &fb);
+ glDeleteRenderbuffers(1, &cb);
+ glDeleteRenderbuffers(1, &db);
+
+ piglit_present_results();
+
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
--
1.9.3
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