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authorMattias Andrée <maandree@operamail.com>2014-02-15 21:51:26 +0100
committerMattias Andrée <maandree@operamail.com>2014-02-15 21:51:26 +0100
commit203a62741428fbbe7dc331dde15c83d8586d9d00 (patch)
tree5ff127d5abfa9b5ebe4fc8443420a7e28cfe750f /src/blueshift_randr.c
parentuse all crtcs (diff)
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crtc selection + doc
Signed-off-by: Mattias Andrée <maandree@operamail.com>
Diffstat (limited to 'src/blueshift_randr.c')
-rw-r--r--src/blueshift_randr.c38
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;
}