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backend/drm: use format table in test_buffer

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Instead of an ad-hoc strip_alpha_channel function, use the
centralized format table to get an opaque substitute.
This commit is contained in:
Simon Ser 2021-03-31 17:14:33 +02:00
parent a2535b80ce
commit 7709a965e5
1 changed files with 7 additions and 13 deletions
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20
backend/drm/drm.c
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@ -24,6 +24,7 @@
#include "backend/drm/drm.h" #include "backend/drm/drm.h"
#include "backend/drm/iface.h" #include "backend/drm/iface.h"
#include "backend/drm/util.h" #include "backend/drm/util.h"
#include "render/pixel_format.h"
#include "render/swapchain.h" #include "render/swapchain.h"
#include "util/signal.h" #include "util/signal.h"
@ -378,15 +379,6 @@ static bool drm_crtc_page_flip(struct wlr_drm_connector *conn) {
return true; return true;
} }
static uint32_t strip_alpha_channel(uint32_t format) {
switch (format) {
case DRM_FORMAT_ARGB8888:
return DRM_FORMAT_XRGB8888;
default:
return DRM_FORMAT_INVALID;
}
}
static bool test_buffer(struct wlr_drm_connector *conn, static bool test_buffer(struct wlr_drm_connector *conn,
struct wlr_buffer *wlr_buffer) { struct wlr_buffer *wlr_buffer) {
struct wlr_drm_backend *drm = conn->backend; struct wlr_drm_backend *drm = conn->backend;
@ -420,10 +412,12 @@ static bool test_buffer(struct wlr_drm_connector *conn,
attribs.format, attribs.modifier)) { attribs.format, attribs.modifier)) {
// The format isn't supported by the plane. Try stripping the alpha // The format isn't supported by the plane. Try stripping the alpha
// channel, if any. // channel, if any.
uint32_t format = strip_alpha_channel(attribs.format); const struct wlr_pixel_format_info *info =
if (format != DRM_FORMAT_INVALID && wlr_drm_format_set_has( drm_get_pixel_format_info(attribs.format);
&crtc->primary->formats, format, attribs.modifier)) { if (info != NULL && info->opaque_substitute != DRM_FORMAT_INVALID &&
attribs.format = format; wlr_drm_format_set_has(&crtc->primary->formats,
info->opaque_substitute, attribs.modifier)) {
attribs.format = info->opaque_substitute;
} else { } else {
return false; return false;
} }