[PATCH i-g-t 5/5] tests/kms_color: New test for pipe level color management

Lionel Landwerlin
2016-02-25T17:17:26Z

This test enables testing of :

* degamma LUTs
* csc matrix
* gamma LUTs
* legacy gamma LUTs

v2: turn assert into require to skip on platform not supporting color
management

v3: add invalid blob ids tests

v4: Try to match CRC results against several values around the
expected result for platforms with odd LUT items

v5: Fix running tests with multiple screens

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
---
tests/Makefile.sources | 1 +
tests/kms_pipe_color.c | 1045 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 1046 insertions(+)
create mode 100644 tests/kms_pipe_color.c

diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index f8b18b0..eb5e79a 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -89,6 +89,7 @@ TESTS_progs_M = \
kms_legacy_colorkey \
kms_mmio_vs_cs_flip \
kms_pipe_b_c_ivb \
+ kms_pipe_color \
kms_pipe_crc_basic \
kms_plane \
kms_psr_sink_crc \
diff --git a/tests/kms_pipe_color.c b/tests/kms_pipe_color.c
new file mode 100644
index 0000000..8d664ac
--- /dev/null
+++ b/tests/kms_pipe_color.c
@@ -0,0 +1,1045 @@
+/*
+ * Copyright © 2015 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 <math.h>
+#include <unistd.h>
+
+#include "drm.h"
+#include "drmtest.h"
+#include "igt.h"
+
+IGT_TEST_DESCRIPTION("Test Color Features at Pipe level");
+
+/* Data structures for gamma/degamma ramps & ctm matrix. */
+struct _drm_color_ctm {
+ /* Transformation matrix in S31.32 format. */
+ __s64 matrix[9];
+};
+
+struct _drm_color_lut {
+ /*
+ * Data is U0.16 fixed point format.
+ */
+ __u16 red;
+ __u16 green;
+ __u16 blue;
+ __u16 reserved;
+};
+
+/* Internal */
+typedef struct {
+ double r, g, b;
+} color_t;
+
+typedef struct {
+ int drm_fd;
+ uint32_t devid;
+ igt_display_t display;
+ igt_pipe_crc_t *pipe_crc;
+
+ uint32_t color_depth;
+ uint64_t degamma_lut_size;
+ uint64_t gamma_lut_size;
+} data_t;
+
+
+static void paint_gradient_rectangles(data_t *data,
+ drmModeModeInfo *mode,
+ color_t *colors,
+ struct igt_fb *fb)
+{
+ cairo_t *cr = igt_get_cairo_ctx(data->drm_fd, fb);
+ int i, l = mode->hdisplay / 3;
+
+ /* Paint 3 gradient rectangles with red/green/blue between 1.0 and
+ * 0.5. We want to avoid 0 so each max LUTs only affect their own
+ * rectangle.
+ */
+ for (i = 0 ; i < 3; i++) {
+ igt_paint_color_gradient_range(cr, i * l, 0, l, mode->vdisplay,
+ colors[i].r != 0 ? 0.2 : 0,
+ colors[i].g != 0 ? 0.2 : 0,
+ colors[i].b != 0 ? 0.2 : 0,
+ colors[i].r,
+ colors[i].g,
+ colors[i].b);
+ }
+
+ cairo_destroy(cr);
+}
+
+static void paint_rectangles(data_t *data,
+ drmModeModeInfo *mode,
+ color_t *colors,
+ struct igt_fb *fb)
+{
+ cairo_t *cr = igt_get_cairo_ctx(data->drm_fd, fb);
+ int i, l = mode->hdisplay / 3;
+
+ /* Paint 3 solid rectangles. */
+ for (i = 0 ; i < 3; i++) {
+ igt_paint_color(cr, i * l, 0, l, mode->vdisplay,
+ colors[i].r, colors[i].g, colors[i].b);
+ }
+
+ cairo_destroy(cr);
+}
+
+static double *generate_table(uint32_t lut_size, double exp)
+{
+ double *coeffs = malloc(sizeof(double) * lut_size);
+ uint32_t i;
+
+ for (i = 0; i < lut_size; i++)
+ coeffs[i] = powf((double) i * 1.0 / (double) (lut_size - 1), exp);
+
+ return coeffs;
+}
+
+static double *generate_table_max(uint32_t lut_size)
+{
+ double *coeffs = malloc(sizeof(double) * lut_size);
+ uint32_t i;
+
+ coeffs[0] = 0.0;
+ for (i = 1; i < lut_size; i++)
+ coeffs[i] = 1.0;
+
+ return coeffs;
+}
+
+static struct _drm_color_lut *coeffs_to_lut(data_t *data,
+ const double *coefficients,
+ uint32_t lut_size,
+ uint32_t color_depth,
+ int off)
+{
+ struct _drm_color_lut *lut;
+ uint32_t i;
+ uint32_t max_value = (1 << 16) - 1;
+ uint32_t mask = ((1 << color_depth) - 1) << 8;
+
+ lut = malloc(sizeof(struct _drm_color_lut) * lut_size);
+
+ if (IS_CHERRYVIEW(data->devid))
+ lut_size -= 1;
+ for (i = 0; i < lut_size; i++) {
+ uint32_t v = (coefficients[i] * max_value);
+
+ /*
+ * Hardware might encode colors on a different number of bits
+ * than what is in our framebuffer (10 or 12bits for example).
+ * Mask the lower bits not provided by the framebuffer so we
+ * can do CRC comparisons.
+ */
+ v &= mask;
+
+ lut[i].red = v;
+ lut[i].green = v;
+ lut[i].blue = v;
+ }
+
+ if (IS_CHERRYVIEW(data->devid))
+ lut[lut_size].red =
+ lut[lut_size].green =
+ lut[lut_size].blue = lut[lut_size - 1].red;
+
+ return lut;
+}
+
+static void set_degamma(data_t *data,
+ igt_pipe_t *pipe,
+ const double *coefficients)
+{
+ size_t size = sizeof(struct _drm_color_lut) * data->degamma_lut_size;
+ struct _drm_color_lut *lut = coeffs_to_lut(data,
+ coefficients,
+ data->degamma_lut_size,
+ data->color_depth, 0);
+
+ igt_pipe_set_degamma_lut(pipe, lut, size);
+
+ free(lut);
+}
+
+static void set_gamma(data_t *data,
+ igt_pipe_t *pipe,
+ const double *coefficients)
+{
+ size_t size = sizeof(struct _drm_color_lut) * data->gamma_lut_size;
+ struct _drm_color_lut *lut = coeffs_to_lut(data,
+ coefficients,
+ data->gamma_lut_size,
+ data->color_depth, 0);
+
+ igt_pipe_set_gamma_lut(pipe, lut, size);
+
+ free(lut);
+}
+
+static void set_ctm(igt_pipe_t *pipe, const double *coefficients)
+{
+ struct _drm_color_ctm ctm;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(ctm.matrix); i++) {
+ if (coefficients[i] < 0) {
+ ctm.matrix[i] =
+ (int64_t) (-coefficients[i] * ((int64_t) 1L << 32));
+ ctm.matrix[i] |= 1ULL << 63;
+ } else
+ ctm.matrix[i] =
+ (int64_t) (coefficients[i] * ((int64_t) 1L << 32));
+ }
+
+ igt_pipe_set_ctm_matrix(pipe, &ctm, sizeof(ctm));
+}
+
+#define disable_degamma(pipe) igt_pipe_set_degamma_lut(pipe, NULL, 0)
+#define disable_gamma(pipe) igt_pipe_set_gamma_lut(pipe, NULL, 0)
+#define disable_ctm(pipe) igt_pipe_set_ctm_matrix(pipe, NULL, 0)
+
+static void output_set_property_enum(igt_output_t *output,
+ const char *property,
+ const char *enum_value)
+{
+ int i;
+ int32_t value = -1;
+ uint32_t prop_id;
+ drmModePropertyPtr prop;
+
+ if (!kmstest_get_property(output->display->drm_fd,
+ output->id,
+ DRM_MODE_OBJECT_CONNECTOR,
+ property,
+ &prop_id, NULL, &prop))
+ return;
+
+ igt_assert(prop->flags & DRM_MODE_PROP_ENUM);
+
+ for (i = 0; i < prop->count_enums; i++) {
+ if (!strcmp(prop->enums[i].name, enum_value)) {
+ value = prop->enums[i].value;
+ break;
+ }
+ }
+ igt_assert_neq(value, -1);
+
+ igt_assert_eq(drmModeObjectSetProperty(output->display->drm_fd,
+ output->id,
+ DRM_MODE_OBJECT_CONNECTOR,
+ prop_id, value), 0);
+
+
+ drmModeFreeProperty(prop);
+}
+
+/*
+ * Draw 3 gradient rectangles in red, green and blue, with a maxed out
+ * degamma LUT and verify we have the same CRC as drawing solid color
+ * rectangles with linear degamma LUT.
+ */
+static void test_pipe_degamma(data_t *data,
+ igt_plane_t *primary)
+{
+ igt_output_t *output;
+ double *degamma_linear, *degamma_full;
+ double *gamma_linear;
+ color_t red_green_blue[] = {
+ { 1.0, 0.0, 0.0 },
+ { 0.0, 1.0, 0.0 },
+ { 0.0, 0.0, 1.0 }
+ };
+
+ degamma_linear = generate_table(data->degamma_lut_size, 1.0);
+ degamma_full = generate_table_max(data->degamma_lut_size);
+
+ gamma_linear = generate_table(data->gamma_lut_size, 1.0);
+
+ for_each_connected_output(&data->display, output) {
+ drmModeModeInfo *mode;
+ struct igt_fb fb_modeset, fb;
+ igt_crc_t crc_fullgamma, crc_fullcolors;
+ int fb_id, fb_modeset_id;
+
+ igt_output_set_pipe(output, primary->pipe->pipe);
+ mode = igt_output_get_mode(output);
+
+ /* Create a framebuffer at the size of the output. */
+ fb_id = igt_create_fb(data->drm_fd,
+ mode->hdisplay,
+ mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ LOCAL_DRM_FORMAT_MOD_NONE,
+ &fb);
+ igt_assert(fb_id);
+
+ fb_modeset_id = igt_create_fb(data->drm_fd,
+ mode->hdisplay,
+ mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ LOCAL_DRM_FORMAT_MOD_NONE,
+ &fb_modeset);
+ igt_assert(fb_modeset_id);
+
+ igt_plane_set_fb(primary, &fb_modeset);
+ disable_ctm(primary->pipe);
+ disable_degamma(primary->pipe);
+ set_gamma(data, primary->pipe, gamma_linear);
+ igt_display_commit(&data->display);
+
+ /* Draw solid colors with no degamma transformation. */
+ paint_rectangles(data, mode, red_green_blue, &fb);
+ igt_plane_set_fb(primary, &fb);
+ igt_display_commit(&data->display);
+ igt_wait_for_vblank(data->drm_fd, primary->pipe->pipe);
+ igt_pipe_crc_collect_crc(data->pipe_crc, &crc_fullcolors);
+
+ /* Draw a gradient with degamma LUT to remap all
+ * values to max red/green/blue.
+ */
+ paint_gradient_rectangles(data, mode, red_green_blue, &fb);
+ igt_plane_set_fb(primary, &fb);
+ set_degamma(data, primary->pipe, degamma_full);
+ igt_display_commit(&data->display);
+ igt_wait_for_vblank(data->drm_fd, primary->pipe->pipe);
+ igt_pipe_crc_collect_crc(data->pipe_crc, &crc_fullgamma);
+
+ /* Verify that the CRC of the software computed output is
+ * equal to the CRC of the degamma LUT transformation output.
+ */
+ igt_assert_crc_equal(&crc_fullgamma, &crc_fullcolors);
+
+ igt_output_set_pipe(output, PIPE_ANY);
+ }
+
+ free(degamma_linear);
+ free(degamma_full);
+ free(gamma_linear);
+}
+
+/*
+ * Draw 3 gradient rectangles in red, green and blue, with a maxed out gamma
+ * LUT and verify we have the same CRC as drawing solid color rectangles.
+ */
+static void test_pipe_gamma(data_t *data,
+ igt_plane_t *primary)
+{
+ igt_output_t *output;
+ double *gamma_full;
+ color_t red_green_blue[] = {
+ { 1.0, 0.0, 0.0 },
+ { 0.0, 1.0, 0.0 },
+ { 0.0, 0.0, 1.0 }
+ };
+
+ gamma_full = generate_table_max(data->gamma_lut_size);
+
+ for_each_connected_output(&data->display, output) {
+ drmModeModeInfo *mode;
+ struct igt_fb fb_modeset, fb;
+ igt_crc_t crc_fullgamma, crc_fullcolors;
+ int fb_id, fb_modeset_id;
+
+ igt_output_set_pipe(output, primary->pipe->pipe);
+ mode = igt_output_get_mode(output);
+
+ /* Create a framebuffer at the size of the output. */
+ fb_id = igt_create_fb(data->drm_fd,
+ mode->hdisplay,
+ mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ LOCAL_DRM_FORMAT_MOD_NONE,
+ &fb);
+ igt_assert(fb_id);
+
+ fb_modeset_id = igt_create_fb(data->drm_fd,
+ mode->hdisplay,
+ mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ LOCAL_DRM_FORMAT_MOD_NONE,
+ &fb_modeset);
+ igt_assert(fb_modeset_id);
+
+ igt_plane_set_fb(primary, &fb_modeset);
+ disable_ctm(primary->pipe);
+ disable_degamma(primary->pipe);
+ set_gamma(data, primary->pipe, gamma_full);
+ igt_display_commit(&data->display);
+
+ /* Draw solid colors with no gamma transformation. */
+ paint_rectangles(data, mode, red_green_blue, &fb);
+ igt_plane_set_fb(primary, &fb);
+ igt_display_commit(&data->display);
+ igt_wait_for_vblank(data->drm_fd, primary->pipe->pipe);
+ igt_pipe_crc_collect_crc(data->pipe_crc, &crc_fullcolors);
+
+ /* Draw a gradient with gamma LUT to remap all values
+ * to max red/green/blue.
+ */
+ paint_gradient_rectangles(data, mode, red_green_blue, &fb);
+ igt_plane_set_fb(primary, &fb);
+ igt_display_commit(&data->display);
+ igt_wait_for_vblank(data->drm_fd, primary->pipe->pipe);
+ igt_pipe_crc_collect_crc(data->pipe_crc, &crc_fullgamma);
+
+ /* Verify that the CRC of the software computed output is
+ * equal to the CRC of the gamma LUT transformation output.
+ */
+ igt_assert_crc_equal(&crc_fullgamma, &crc_fullcolors);
+
+ igt_output_set_pipe(output, PIPE_ANY);
+ }
+
+ free(gamma_full);
+}
+
+/*
+ * Draw 3 gradient rectangles in red, green and blue, with a maxed out legacy
+ * gamma LUT and verify we have the same CRC as drawing solid color rectangles
+ * with linear legacy gamma LUT.
+ */
+static void test_pipe_legacy_gamma(data_t *data,
+ igt_plane_t *primary)
+{
+ igt_output_t *output;
+ color_t red_green_blue[] = {
+ { 1.0, 0.0, 0.0 },
+ { 0.0, 1.0, 0.0 },
+ { 0.0, 0.0, 1.0 }
+ };
+ drmModeCrtc *kms_crtc;
+ uint32_t i, legacy_lut_size;
+ uint16_t *red_lut, *green_lut, *blue_lut;
+
+ kms_crtc = drmModeGetCrtc (data->drm_fd, primary->pipe->crtc_id);
+ legacy_lut_size = kms_crtc->gamma_size;
+ drmModeFreeCrtc (kms_crtc);
+
+ red_lut = malloc(sizeof(uint16_t) * legacy_lut_size);
+ green_lut = malloc(sizeof(uint16_t) * legacy_lut_size);
+ blue_lut = malloc(sizeof(uint16_t) * legacy_lut_size);
+
+ red_lut[0] = green_lut[0] = blue_lut[0] = 0;
+ for (i = 1; i < legacy_lut_size; i++)
+ red_lut[i] = green_lut[i] = blue_lut[i] = 0xffff;
+
+ for_each_connected_output(&data->display, output) {
+ drmModeModeInfo *mode;
+ struct igt_fb fb_modeset, fb;
+ igt_crc_t crc_fullgamma, crc_fullcolors;
+ int fb_id, fb_modeset_id;
+
+ igt_output_set_pipe(output, primary->pipe->pipe);
+ mode = igt_output_get_mode(output);
+
+ /* Create a framebuffer at the size of the output. */
+ fb_id = igt_create_fb(data->drm_fd,
+ mode->hdisplay,
+ mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ LOCAL_DRM_FORMAT_MOD_NONE,
+ &fb);
+ igt_assert(fb_id);
+
+ fb_modeset_id = igt_create_fb(data->drm_fd,
+ mode->hdisplay,
+ mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ LOCAL_DRM_FORMAT_MOD_NONE,
+ &fb_modeset);
+ igt_assert(fb_modeset_id);
+
+ igt_plane_set_fb(primary, &fb_modeset);
+ disable_degamma(primary->pipe);
+ disable_gamma(primary->pipe);
+ disable_ctm(primary->pipe);
+ igt_display_commit(&data->display);
+
+ /* Draw solid colors with no gamma transformation. */
+ paint_rectangles(data, mode, red_green_blue, &fb);
+ igt_plane_set_fb(primary, &fb);
+ igt_display_commit(&data->display);
+ igt_wait_for_vblank(data->drm_fd, primary->pipe->pipe);
+ igt_pipe_crc_collect_crc(data->pipe_crc, &crc_fullcolors);
+
+ /* Draw a gradient with gamma LUT to remap all values
+ * to max red/green/blue.
+ */
+ paint_gradient_rectangles(data, mode, red_green_blue, &fb);
+ igt_plane_set_fb(primary, &fb);
+ igt_assert_eq(drmModeCrtcSetGamma(data->drm_fd, primary->pipe->crtc_id,
+ legacy_lut_size, red_lut, green_lut, blue_lut), 0);
+ igt_display_commit(&data->display);
+ igt_wait_for_vblank(data->drm_fd, primary->pipe->pipe);
+ igt_pipe_crc_collect_crc(data->pipe_crc, &crc_fullgamma);
+
+ /* Verify that the CRC of the software computed output is
+ * equal to the CRC of the gamma LUT transformation output.
+ */
+ igt_assert_crc_equal(&crc_fullgamma, &crc_fullcolors);
+
+ /* Reset output. */
+ for (i = 1; i < legacy_lut_size; i++)
+ red_lut[i] = green_lut[i] = blue_lut[i] = i << 8;
+
+ igt_assert_eq(drmModeCrtcSetGamma(data->drm_fd, primary->pipe->crtc_id,
+ legacy_lut_size, red_lut, green_lut, blue_lut), 0);
+ igt_display_commit(&data->display);
+
+ igt_output_set_pipe(output, PIPE_ANY);
+ }
+
+ free(red_lut);
+ free(green_lut);
+ free(blue_lut);
+}
+
+/*
+ * Draw 3 rectangles using before colors with the ctm matrix apply and verify
+ * the CRC is equal to using after colors with an identify ctm matrix.
+ */
+static bool test_pipe_ctm(data_t *data,
+ igt_plane_t *primary,
+ color_t *before,
+ color_t *after,
+ double *ctm_matrix)
+{
+ const double ctm_identity[] = {
+ 1.0, 0.0, 0.0,
+ 0.0, 1.0, 0.0,
+ 0.0, 0.0, 1.0
+ };
+ double *degamma_linear, *gamma_linear;
+ igt_output_t *output;
+ bool ret = true;
+
+ degamma_linear = generate_table(data->degamma_lut_size, 1.0);
+ gamma_linear = generate_table(data->gamma_lut_size, 1.0);
+
+ for_each_connected_output(&data->display, output) {
+ drmModeModeInfo *mode;
+ struct igt_fb fb_modeset, fb;
+ igt_crc_t crc_software, crc_hardware;
+ int fb_id, fb_modeset_id;
+
+ igt_output_set_pipe(output, primary->pipe->pipe);
+ mode = igt_output_get_mode(output);
+
+ /* Create a framebuffer at the size of the output. */
+ fb_id = igt_create_fb(data->drm_fd,
+ mode->hdisplay,
+ mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ LOCAL_DRM_FORMAT_MOD_NONE,
+ &fb);
+ igt_assert(fb_id);
+
+ fb_modeset_id = igt_create_fb(data->drm_fd,
+ mode->hdisplay,
+ mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ LOCAL_DRM_FORMAT_MOD_NONE,
+ &fb_modeset);
+ igt_assert(fb_modeset_id);
+ igt_plane_set_fb(primary, &fb_modeset);
+
+ set_degamma(data, primary->pipe, degamma_linear);
+ set_gamma(data, primary->pipe, gamma_linear);
+ disable_ctm(primary->pipe);
+ igt_display_commit(&data->display);
+
+ paint_rectangles(data, mode, after, &fb);
+ igt_plane_set_fb(primary, &fb);
+ set_ctm(primary->pipe, ctm_identity);
+ igt_display_commit(&data->display);
+ igt_wait_for_vblank(data->drm_fd, primary->pipe->pipe);
+ igt_pipe_crc_collect_crc(data->pipe_crc, &crc_software);
+
+ /* With CTM transformation. */
+ paint_rectangles(data, mode, before, &fb);
+ igt_plane_set_fb(primary, &fb);
+ set_ctm(primary->pipe, ctm_matrix);
+ igt_display_commit(&data->display);
+ igt_wait_for_vblank(data->drm_fd, primary->pipe->pipe);
+ igt_pipe_crc_collect_crc(data->pipe_crc, &crc_hardware);
+
+ /* Verify that the CRC of the software computed output is
+ * equal to the CRC of the CTM matrix transformation output.
+ */
+ ret &= igt_crc_equal(&crc_software, &crc_hardware);
+
+ igt_output_set_pipe(output, PIPE_ANY);
+ }
+
+ free(degamma_linear);
+ free(gamma_linear);
+
+ return ret;
+}
+
+/*
+ * Hardware computes CRC based on the number of bits it is working with (8,
+ * 10, 12, 16 bits), meaning with a framebuffer of 8bits per color will
+ * usually leave the remaining lower bits at 0.
+ *
+ * We're programming the gamma LUT in order to get rid of those lower bits so
+ * we can compare the CRC of a framebuffer without any transformation to a CRC
+ * with transformation applied and verify the CRCs match.
+ *
+ * This test is currently disabled as the CRC computed on Intel hardware seems
+ * to include data on the lower bits, this is preventing us to CRC checks.
+ */
+#if 0
+static void test_pipe_limited_range_ctm(data_t *data,
+ igt_plane_t *primary)
+{
+ double limited_result = 235.0 / 255.0;
+ color_t red_green_blue_limited[] = {
+ { limited_result, 0.0, 0.0 },
+ { 0.0, limited_result, 0.0 },
+ { 0.0, 0.0, limited_result }
+ };
+ color_t red_green_blue_full[] = {
+ { 0.5, 0.0, 0.0 },
+ { 0.0, 0.5, 0.0 },
+ { 0.0, 0.0, 0.5 }
+ };
+ double ctm[] = { 1.0, 0.0, 0.0,
+ 0.0, 1.0, 0.0,
+ 0.0, 0.0, 1.0 };
+ double *degamma_linear, *gamma_linear;
+ igt_output_t *output;
+
+ degamma_linear = generate_table(data->degamma_lut_size, 1.0);
+ gamma_linear = generate_table(data->gamma_lut_size, 1.0);
+
+ for_each_connected_output(&data->display, output) {
+ drmModeModeInfo *mode;
+ struct igt_fb fb_modeset, fb;
+ igt_crc_t crc_full, crc_limited;
+ int fb_id, fb_modeset_id;
+
+ igt_output_set_pipe(output, primary->pipe->pipe);
+ mode = igt_output_get_mode(output);
+
+ /* Create a framebuffer at the size of the output. */
+ fb_id = igt_create_fb(data->drm_fd,
+ mode->hdisplay,
+ mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ LOCAL_DRM_FORMAT_MOD_NONE,
+ &fb);
+ igt_assert(fb_id);
+
+ fb_modeset_id = igt_create_fb(data->drm_fd,
+ mode->hdisplay,
+ mode->vdisplay,
+ DRM_FORMAT_XRGB8888,
+ LOCAL_DRM_FORMAT_MOD_NONE,
+ &fb_modeset);
+ igt_assert(fb_modeset_id);
+ igt_plane_set_fb(primary, &fb_modeset);
+
+ set_degamma(data, primary->pipe, degamma_linear);
+ set_gamma(data, primary->pipe, gamma_linear);
+ set_ctm(primary->pipe, ctm);
+
+ output_set_property_enum(output, "Broadcast RGB", "Full");
+ paint_rectangles(data, mode, red_green_blue_limited, &fb);
+ igt_plane_set_fb(primary, &fb);
+ igt_display_commit(&data->display);
+ igt_wait_for_vblank(data->drm_fd, primary->pipe->pipe);
+ igt_pipe_crc_collect_crc(data->pipe_crc, &crc_full);
+
+ /* Set the output into limited range. */
+ output_set_property_enum(output, "Broadcast RGB", "Limited 16:235");
+ paint_rectangles(data, mode, red_green_blue_full, &fb);
+ igt_plane_set_fb(primary, &fb);
+ igt_display_commit(&data->display);
+ igt_wait_for_vblank(data->drm_fd, primary->pipe->pipe);
+ igt_pipe_crc_collect_crc(data->pipe_crc, &crc_limited);
+
+ /* Verify that the CRC of the software computed output is
+ * equal to the CRC of the CTM matrix transformation output.
+ */
+ igt_assert_crc_equal(&crc_full, &crc_limited);
+
+ igt_output_set_pipe(output, PIPE_ANY);
+ }
+
+ free(gamma_linear);
+ free(degamma_linear);
+}
+#endif
+
+static void
+run_tests_for_pipe(data_t *data, enum pipe p)
+{
+ igt_output_t *output;
+ igt_pipe_t *pipe;
+ igt_plane_t *primary;
+ double delta;
+ int i;
+ color_t red_green_blue[] = {
+ { 1.0, 0.0, 0.0 },
+ { 0.0, 1.0, 0.0 },
+ { 0.0, 0.0, 1.0 }
+ };
+
+ igt_fixture {
+ igt_require_pipe_crc();
+
+ if (p >= data->display.n_pipes)
+ return;
+
+ pipe = &data->display.pipes[p];
+ if (pipe->n_planes < IGT_PLANE_PRIMARY)
+ return;
+
+ primary = &pipe->planes[IGT_PLANE_PRIMARY];
+
+ data->pipe_crc = igt_pipe_crc_new(primary->pipe->pipe,
+ INTEL_PIPE_CRC_SOURCE_AUTO);
+
+ igt_require(igt_pipe_get_property(&data->display.pipes[p],
+ "DEGAMMA_LUT_SIZE",
+ NULL,
+ &data->degamma_lut_size,
+ NULL));
+ igt_require(igt_pipe_get_property(&data->display.pipes[p],
+ "GAMMA_LUT_SIZE",
+ NULL,
+ &data->gamma_lut_size,
+ NULL));
+
+ for_each_connected_output(&data->display, output)
+ output_set_property_enum(output, "Broadcast RGB", "Full");
+ }
+
+ /* We assume an 8bits depth per color for degamma/gamma LUTs
+ * for CRC checks with framebuffer references. */
+ data->color_depth = 8;
+ delta = 1.0 / (1 << data->color_depth);
+
+ igt_subtest_f("ctm-red-to-blue-pipe%d", p) {
+ color_t blue_green_blue[] = {
+ { 0.0, 0.0, 1.0 },
+ { 0.0, 1.0, 0.0 },
+ { 0.0, 0.0, 1.0 }
+ };
+ double ctm[] = { 0.0, 0.0, 0.0,
+ 0.0, 1.0, 0.0,
+ 1.0, 0.0, 1.0 };
+ igt_assert(test_pipe_ctm(data, primary, red_green_blue,
+ blue_green_blue, ctm));
+ }
+
+ igt_subtest_f("ctm-green-to-red-pipe%d", p) {
+ color_t red_red_blue[] = {
+ { 1.0, 0.0, 0.0 },
+ { 1.0, 0.0, 0.0 },
+ { 0.0, 0.0, 1.0 }
+ };
+ double ctm[] = { 1.0, 1.0, 0.0,
+ 0.0, 0.0, 0.0,
+ 0.0, 0.0, 1.0 };
+ igt_assert(test_pipe_ctm(data, primary, red_green_blue,
+ red_red_blue, ctm));
+ }
+
+ igt_subtest_f("ctm-blue-to-red-pipe%d", p) {
+ color_t red_green_red[] = {
+ { 1.0, 0.0, 0.0 },
+ { 0.0, 1.0, 0.0 },
+ { 1.0, 0.0, 0.0 }
+ };
+ double ctm[] = { 1.0, 0.0, 1.0,
+ 0.0, 1.0, 0.0,
+ 0.0, 0.0, 0.0 };
+ igt_assert(test_pipe_ctm(data, primary, red_green_blue,
+ red_green_red, ctm));
+ }
+
+ /* We tests a few values around the expected result because
+ * the it depends on the hardware we're dealing with, we can
+ * either get clamped or rounded values and we also need to
+ * account for odd number of items in the LUTs. */
+ igt_subtest_f("ctm-0-25-pipe%d", p) {
+ color_t expected_colors[] = {
+ { 0.0, }, { 0.0, }, { 0.0, }
+ };
+ double ctm[] = { 0.25, 0.0, 0.0,
+ 0.0, 0.25, 0.0,
+ 0.0, 0.0, 0.25 };
+ bool success = false;
+
+ for (i = 0; i < 5; i++) {
+ expected_colors[0].r =
+ expected_colors[1].g =
+ expected_colors[2].b =
+ 0.25 + delta * (i - 2);
+ success |= test_pipe_ctm(data, primary,
+ red_green_blue,
+ expected_colors, ctm);
+ }
+ igt_assert(success);
+ }
+
+ igt_subtest_f("ctm-0-5-pipe%d", p) {
+ color_t expected_colors[] = {
+ { 0.0, }, { 0.0, }, { 0.0, }
+ };
+ double ctm[] = { 0.5, 0.0, 0.0,
+ 0.0, 0.5, 0.0,
+ 0.0, 0.0, 0.5 };
+ bool success = false;
+
+ for (i = 0; i < 5; i++) {
+ expected_colors[0].r =
+ expected_colors[1].g =
+ expected_colors[2].b =
+ 0.5 + delta * (i - 2);
+ success |= test_pipe_ctm(data, primary,
+ red_green_blue,
+ expected_colors, ctm);
+ }
+ igt_assert(success);
+ }
+
+ igt_subtest_f("ctm-0-75-pipe%d", p) {
+ color_t expected_colors[] = {
+ { 0.0, }, { 0.0, }, { 0.0, }
+ };
+ double ctm[] = { 0.75, 0.0, 0.0,
+ 0.0, 0.75, 0.0,
+ 0.0, 0.0, 0.75 };
+ bool success = false;
+
+ for (i = 0; i < 7; i++) {
+ expected_colors[0].r =
+ expected_colors[1].g =
+ expected_colors[2].b =
+ 0.75 + delta * (i - 3);
+ success |= test_pipe_ctm(data, primary,
+ red_green_blue,
+ expected_colors, ctm);
+ }
+ igt_assert(success);
+ }
+
+ igt_subtest_f("ctm-max-pipe%d", p) {
+ color_t full_rgb[] = {
+ { 1.0, 0.0, 0.0 },
+ { 0.0, 1.0, 0.0 },
+ { 0.0, 0.0, 1.0 }
+ };
+ double ctm[] = { 100.0, 0.0, 0.0,
+ 0.0, 100.0, 0.0,
+ 0.0, 0.0, 100.0 };
+
+ /* CherryView generates values on 10bits that we
+ * produce with an 8 bits per color framebuffer. */
+ igt_require(!IS_CHERRYVIEW(data->devid));
+
+ igt_assert(test_pipe_ctm(data, primary, red_green_blue,
+ full_rgb, ctm));
+ }
+
+ igt_subtest_f("ctm-negative-pipe%d", p) {
+ color_t all_black[] = {
+ { 0.0, 0.0, 0.0 },
+ { 0.0, 0.0, 0.0 },
+ { 0.0, 0.0, 0.0 }
+ };
+ double ctm[] = { -1.0, 0.0, 0.0,
+ 0.0, -1.0, 0.0,
+ 0.0, 0.0, -1.0 };
+ igt_assert(test_pipe_ctm(data, primary, red_green_blue,
+ all_black, ctm));
+ }
+
+#if 0
+ igt_subtest_f("ctm-limited-range-pipe%d", p)
+ test_pipe_limited_range_ctm(data, primary);
+#endif
+
+ igt_subtest_f("degamma-pipe%d", p)
+ test_pipe_degamma(data, primary);
+
+ igt_subtest_f("gamma-pipe%d", p)
+ test_pipe_gamma(data, primary);
+
+ igt_subtest_f("legacy-gamma-pipe%d", p)
+ test_pipe_legacy_gamma(data, primary);
+
+ igt_fixture {
+ for_each_connected_output(&data->display, output)
+ output_set_property_enum(output, "Broadcast RGB", "Full");
+
+ disable_degamma(primary->pipe);
+ disable_gamma(primary->pipe);
+ disable_ctm(primary->pipe);
+ igt_display_commit(&data->display);
+
+ igt_pipe_crc_free(data->pipe_crc);
+ data->pipe_crc = NULL;
+ }
+}
+
+static int
+pipe_set_property_blob_id(igt_pipe_t *pipe, const char *property, uint32_t blob_id)
+{
+ uint32_t prop_id;
+
+ igt_assert(kmstest_get_property(pipe->display->drm_fd,
+ pipe->crtc_id,
+ DRM_MODE_OBJECT_CRTC,
+ property,
+ &prop_id, NULL, NULL));
+
+ return drmModeObjectSetProperty(pipe->display->drm_fd,
+ pipe->crtc_id,
+ DRM_MODE_OBJECT_CRTC,
+ prop_id, blob_id);
+}
+
+static int
+pipe_set_property_blob(igt_pipe_t *pipe, const char *property, void *ptr, size_t length)
+{
+ int ret = 0;
+ uint32_t blob_id = 0;
+
+ if (length > 0)
+ igt_assert_eq(drmModeCreatePropertyBlob(pipe->display->drm_fd,
+ ptr, length,
+ &blob_id), 0);
+
+ ret = pipe_set_property_blob_id(pipe, property, blob_id);
+
+ if (blob_id != 0)
+ igt_assert_eq(drmModeDestroyPropertyBlob(pipe->display->drm_fd, blob_id), 0);
+
+ return ret;
+}
+
+static void
+invalid_lut_sizes(data_t *data)
+{
+ igt_pipe_t *pipe = &data->display.pipes[0];
+ size_t degamma_lut_size = data->degamma_lut_size * sizeof(struct _drm_color_lut);
+ size_t gamma_lut_size = data->gamma_lut_size * sizeof(struct _drm_color_lut);
+
+ struct _drm_color_lut *degamma_lut = malloc(data->degamma_lut_size * sizeof(struct _drm_color_lut) * 2);
+ struct _drm_color_lut *gamma_lut = malloc(data->gamma_lut_size * sizeof(struct _drm_color_lut) * 2);
+
+ igt_assert_eq(pipe_set_property_blob(pipe, "DEGAMMA_LUT",
+ degamma_lut, 1), -EINVAL);
+ igt_assert_eq(pipe_set_property_blob(pipe, "DEGAMMA_LUT",
+ degamma_lut, degamma_lut_size + 1),
+ -EINVAL);
+ igt_assert_eq(pipe_set_property_blob(pipe, "DEGAMMA_LUT",
+ degamma_lut, degamma_lut_size - 1),
+ -EINVAL);
+ igt_assert_eq(pipe_set_property_blob(pipe, "DEGAMMA_LUT",
+ degamma_lut, degamma_lut_size + sizeof(struct _drm_color_lut)),
+ -EINVAL);
+ igt_assert_eq(pipe_set_property_blob_id(pipe, "DEGAMMA_LUT", pipe->crtc_id),
+ -EINVAL);
+ igt_assert_eq(pipe_set_property_blob_id(pipe, "DEGAMMA_LUT", 4096 * 4096),
+ -EINVAL);
+
+ igt_assert_eq(pipe_set_property_blob(pipe, "GAMMA_LUT",
+ gamma_lut, 1),
+ -EINVAL);
+ igt_assert_eq(pipe_set_property_blob(pipe, "GAMMA_LUT",
+ gamma_lut, gamma_lut_size + 1),
+ -EINVAL);
+ igt_assert_eq(pipe_set_property_blob(pipe, "GAMMA_LUT",
+ gamma_lut, gamma_lut_size - 1),
+ -EINVAL);
+ igt_assert_eq(pipe_set_property_blob(pipe, "GAMMA_LUT",
+ gamma_lut, gamma_lut_size + sizeof(struct _drm_color_lut)),
+ -EINVAL);
+ igt_assert_eq(pipe_set_property_blob_id(pipe, "GAMMA_LUT", pipe->crtc_id),
+ -EINVAL);
+ igt_assert_eq(pipe_set_property_blob_id(pipe, "GAMMA_LUT", 4096 * 4096),
+ -EINVAL);
+
+ free(degamma_lut);
+ free(gamma_lut);
+}
+
+static void
+invalid_ctm_matrix_sizes(data_t *data)
+{
+ igt_pipe_t *pipe = &data->display.pipes[0];
+ void *ptr = malloc(sizeof(struct _drm_color_ctm) * 4);
+
+ igt_assert_eq(pipe_set_property_blob(pipe, "CTM", ptr, 1),
+ -EINVAL);
+ igt_assert_eq(pipe_set_property_blob(pipe, "CTM", ptr,
+ sizeof(struct _drm_color_ctm) + 1),
+ -EINVAL);
+ igt_assert_eq(pipe_set_property_blob(pipe, "CTM", ptr,
+ sizeof(struct _drm_color_ctm) - 1),
+ -EINVAL);
+ igt_assert_eq(pipe_set_property_blob(pipe, "CTM", ptr,
+ sizeof(struct _drm_color_ctm) * 2),
+ -EINVAL);
+ igt_assert_eq(pipe_set_property_blob_id(pipe, "CTM", pipe->crtc_id),
+ -EINVAL);
+ igt_assert_eq(pipe_set_property_blob_id(pipe, "CTM", 4096 * 4096),
+ -EINVAL);
+
+ free(ptr);
+}
+
+igt_main
+{
+ data_t data = {};
+
+ igt_skip_on_simulation();
+
+ igt_fixture {
+ data.drm_fd = drm_open_driver_master(DRIVER_INTEL);
+ data.devid = intel_get_drm_devid(data.drm_fd);
+ kmstest_set_vt_graphics_mode();
+
+ igt_display_init(&data.display, data.drm_fd);
+ }
+
+ for (int pipe = 0; pipe < I915_MAX_PIPES; pipe++)
+ run_tests_for_pipe(&data, pipe);
+
+ igt_subtest_f("invalid-lut-sizes")
+ invalid_lut_sizes(&data);
+
+ igt_subtest_f("invalid-ctm-matrix-sizes")
+ invalid_ctm_matrix_sizes(&data);
+
+ igt_fixture {
+ igt_display_fini(&data.display);
+ }
+}