[Piglit] [PATCH] GL_ARB_fragment_program/sparse-samplers: Test for a bug in i965.
Eric Anholt
eric at anholt.net
Thu Feb 14 10:05:35 PST 2013
---
tests/all.tests | 1 +
tests/spec/arb_fragment_program/CMakeLists.gl.txt | 1 +
tests/spec/arb_fragment_program/sparse-samplers.c | 154 +++++++++++++++++++++
3 files changed, 156 insertions(+)
create mode 100644 tests/spec/arb_fragment_program/sparse-samplers.c
diff --git a/tests/all.tests b/tests/all.tests
index 33b7550..f657613 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -947,6 +947,7 @@ add_plain_test(arb_fragment_program, 'fp-lit-mask')
add_plain_test(arb_fragment_program, 'fp-lit-src-equals-dst')
add_plain_test(arb_fragment_program, 'fp-long-alu')
add_plain_test(arb_fragment_program, 'fp-set-01')
+arb_fragment_program['sparse-samplers'] = concurrent_test('arb_fragment_program-sparse-samplers')
add_plain_test(arb_fragment_program, 'trinity-fp1')
arb_fragment_program['incomplete-texture-arb_fp'] = concurrent_test('incomplete-texture -auto arb_fp')
diff --git a/tests/spec/arb_fragment_program/CMakeLists.gl.txt b/tests/spec/arb_fragment_program/CMakeLists.gl.txt
index bdcf559..0b63ada 100644
--- a/tests/spec/arb_fragment_program/CMakeLists.gl.txt
+++ b/tests/spec/arb_fragment_program/CMakeLists.gl.txt
@@ -10,5 +10,6 @@ link_libraries (
)
piglit_add_executable (arb_fragment_program-minmax minmax.c)
+piglit_add_executable (arb_fragment_program-sparse-samplers sparse-samplers.c)
# vim: ft=cmake:
diff --git a/tests/spec/arb_fragment_program/sparse-samplers.c b/tests/spec/arb_fragment_program/sparse-samplers.c
new file mode 100644
index 0000000..7faf2c9
--- /dev/null
+++ b/tests/spec/arb_fragment_program/sparse-samplers.c
@@ -0,0 +1,154 @@
+/*
+ * 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.
+ */
+
+/**
+ * Tests that sampler behavior works when texture units are not used
+ * contiguously starting from 0.
+ */
+
+#include "piglit-util-gl-common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_compat_version = 10;
+
+ config.window_width = 400;
+ config.window_height = 100;
+ config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_ALPHA;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static int texrect_w;
+static int texrect_h;
+static const float r[] = {1, 0, 0, 1};
+static const float g[] = {0, 1, 0, 1};
+static const float b[] = {0, 0, 1, 1};
+static const float w[] = {1, 1, 1, 1};
+
+static bool
+test_nearest(int x)
+{
+ return (piglit_probe_rect_rgba(x, 0,
+ texrect_w, texrect_h, r) &&
+ piglit_probe_rect_rgba(x + texrect_w, 0,
+ texrect_w, texrect_h, g) &&
+ piglit_probe_rect_rgba(x, texrect_h,
+ texrect_w, texrect_h, b) &&
+ piglit_probe_rect_rgba(x + texrect_w, texrect_h,
+ texrect_w, texrect_h, w));
+}
+
+static bool
+test_linear(int x)
+{
+ float average[4];
+ int i;
+
+ /* Figure out what the blended middle pixel of the magnified
+ * texture ought to be. Given a default piglit tolerance of
+ * .02, the texture needs to be at least around 64x64 for this
+ * to probably work out.
+ */
+ for (i = 0; i < 4; i++)
+ average[i] = (r[i] + g[i] + b[i] + w[i]) / 4;
+
+ return (piglit_probe_pixel_rgba(x,
+ 0,
+ r) &&
+ piglit_probe_pixel_rgba(x + texrect_w * 2 - 1,
+ 0,
+ g) &&
+ piglit_probe_pixel_rgba(x,
+ texrect_h * 2 - 1,
+ b) &&
+ piglit_probe_pixel_rgba(x + texrect_w * 2 - 1,
+ texrect_h * 2 - 1,
+ w) &&
+ piglit_probe_pixel_rgba(x + texrect_w,
+ texrect_h, average));
+}
+
+enum piglit_result
+piglit_display(void)
+{
+ static const char *fp_source =
+ "!!ARBfp1.0\n"
+ "TEX result.color, fragment.texcoord[0], texture[1], 2D;\n"
+ "END\n";
+ bool pass = true;
+ GLuint tex;
+ GLuint prog;
+
+ texrect_w = piglit_width / 4 / 2;
+ texrect_h = piglit_height / 2;
+
+ glGenProgramsARB(1, &prog);
+ glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, prog);
+ glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB,
+ GL_PROGRAM_FORMAT_ASCII_ARB,
+ strlen(fp_source),
+ (const GLubyte *) fp_source);
+
+ glEnable(GL_FRAGMENT_PROGRAM_ARB);
+
+ glActiveTexture(GL_TEXTURE1);
+ tex = piglit_rgbw_texture(GL_RGBA, 2, 2, false, false,
+ GL_UNSIGNED_NORMALIZED);
+
+ /* Given that the failure mode we had that led to this test
+ * being written was that the sampler state read was
+ * pseudo-random, go through several statechanges on the
+ * sampler to make sure we're reliably getting our sampler
+ * state.
+ */
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ piglit_draw_rect_tex(-1, -1, 0.5, 2,
+ 0, 0, 1, 1);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ piglit_draw_rect_tex(-0.5, -1, 0.5, 2,
+ 0, 0, 1, 1);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ piglit_draw_rect_tex(0, -1, 0.5, 2,
+ 0, 0, 1, 1);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ piglit_draw_rect_tex(0.5, -1, 0.5, 2,
+ 0, 0, 1, 1);
+
+ pass = pass && test_nearest(piglit_width * 0 / 4);
+ pass = pass && test_linear(piglit_width * 1 / 4);
+ pass = pass && test_nearest(piglit_width * 2 / 4);
+ pass = pass && test_linear(piglit_width * 3 / 4);
+
+ piglit_present_results();
+
+ glDeleteTextures(1, &tex);
+ glDisable(GL_FRAGMENT_PROGRAM_ARB);
+ glDeleteProgramsARB(1, &prog);
+
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+}
--
1.7.10.4
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