diff options
Diffstat (limited to '')
| -rw-r--r-- | src/blueshift_randr.c | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/src/blueshift_randr.c b/src/blueshift_randr.c index 75443e4..891c8b6 100644 --- a/src/blueshift_randr.c +++ b/src/blueshift_randr.c @@ -37,6 +37,8 @@ int main(int argc __attribute__((unused)), char** argv __attribute__((unused))) { + uint64_t use_crtcs = ~0; + xcb_connection_t* connection; xcb_generic_error_t* error; xcb_randr_query_version_cookie_t version_cookie; @@ -61,9 +63,13 @@ int main(int argc __attribute__((unused)), char** argv __attribute__((unused))) xcb_void_cookie_t gamma_set_cookie; + /* Get X connection */ + connection = xcb_connect(NULL, NULL /* preferred screen */); + /* Check RANDR protocol version */ + version_cookie = xcb_randr_query_version(connection, RANDR_VERSION_MAJOR, RANDR_VERSION_MINOR); randr_version = xcb_randr_query_version_reply(connection, version_cookie, &error); @@ -87,6 +93,8 @@ int main(int argc __attribute__((unused)), char** argv __attribute__((unused))) free(randr_version); + /* Get X resources */ + setup = xcb_get_setup(connection); iter = xcb_setup_roots_iterator(setup); screen = iter.data; @@ -102,13 +110,25 @@ int main(int argc __attribute__((unused)), char** argv __attribute__((unused))) } + /* Get CRTC:s */ + crtc_count = res_reply->num_crtcs; crtcs = xcb_randr_get_screen_resources_current_crtcs(res_reply); crtcs_end = crtcs + crtc_count; + /* Use CRTC:s */ + while (crtcs != crtcs_end) { + /* Check whether we should use the CRTC */ + + if ((use_crtcs & 1) == 0) + goto next_crtc; + + + /* Get curve X-axis size */ + gamma_size_cookie = xcb_randr_get_crtc_gamma_size(connection, *crtcs); gamma_size_reply = xcb_randr_get_crtc_gamma_size_reply(connection, gamma_size_cookie, &error); @@ -123,6 +143,8 @@ int main(int argc __attribute__((unused)), char** argv __attribute__((unused))) free(gamma_size_reply); + /* Acquire curve control */ + gamma_get_cookie = xcb_randr_get_crtc_gamma(connection, *crtcs); gamma_get_reply = xcb_randr_get_crtc_gamma_reply(connection, gamma_get_cookie, &error); @@ -138,6 +160,8 @@ int main(int argc __attribute__((unused)), char** argv __attribute__((unused))) b_gamma = xcb_randr_get_crtc_gamma_blue(gamma_get_reply); + /* Set curves */ + for (i = 0; i < curve_size; i++) { *(r_gamma + i) = (1 << 16) - 1 - *(r_gamma + i); @@ -146,6 +170,8 @@ int main(int argc __attribute__((unused)), char** argv __attribute__((unused))) } + /* Apply curves */ + gamma_set_cookie = xcb_randr_set_crtc_gamma_checked(connection, *crtcs, curve_size, r_gamma, g_gamma, b_gamma); error = xcb_request_check(connection, gamma_set_cookie); @@ -155,14 +181,24 @@ int main(int argc __attribute__((unused)), char** argv __attribute__((unused))) return 1; } - free(gamma_get_reply); + + + /* Next CRTC */ + + next_crtc: crtcs++; + use_crtcs >>= 1; } + + /* Free remaining resources */ + free(res_reply); xcb_disconnect(connection); + + return 0; } |