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egl: add WLR_EGL_NO_MODIFIERS
Same as WLR_DRM_NO_MODIFIERS but for EGL. For debugging purposes mostly. References: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3451
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ccf4e04036
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2 changed files with 15 additions and 4 deletions
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@ -12,6 +12,8 @@ wlroots reads these environment variables
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renderers: gles2, pixman, vulkan)
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* *WLR_RENDER_DRM_DEVICE*: specifies the DRM node to use for
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hardware-accelerated renderers.
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* *WLR_EGL_NO_MODIFIERS*: set to 1 to disable format modifiers in EGL, this can
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be used to understand and work around driver bugs.
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## DRM backend
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17
render/egl.c
17
render/egl.c
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@ -107,6 +107,11 @@ static void log_modifier(uint64_t modifier, bool external_only) {
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}
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static void init_dmabuf_formats(struct wlr_egl *egl) {
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bool no_modifiers = env_parse_bool("WLR_EGL_NO_MODIFIERS");
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if (no_modifiers) {
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wlr_log(WLR_INFO, "WLR_EGL_NO_MODIFIERS set, disabling modifiers for EGL");
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}
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int *formats;
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int formats_len = get_egl_dmabuf_formats(egl, &formats);
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if (formats_len < 0) {
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@ -121,8 +126,10 @@ static void init_dmabuf_formats(struct wlr_egl *egl) {
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uint64_t *modifiers;
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EGLBoolean *external_only;
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int modifiers_len =
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get_egl_dmabuf_modifiers(egl, fmt, &modifiers, &external_only);
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int modifiers_len = 0;
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if (!no_modifiers) {
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modifiers_len = get_egl_dmabuf_modifiers(egl, fmt, &modifiers, &external_only);
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}
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if (modifiers_len < 0) {
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continue;
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}
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@ -174,8 +181,10 @@ static void init_dmabuf_formats(struct wlr_egl *egl) {
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free(formats);
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egl->has_modifiers = has_modifiers;
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wlr_log(WLR_DEBUG, "EGL DMA-BUF format modifiers %s",
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has_modifiers ? "supported" : "unsupported");
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if (!no_modifiers) {
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wlr_log(WLR_DEBUG, "EGL DMA-BUF format modifiers %s",
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has_modifiers ? "supported" : "unsupported");
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}
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}
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static struct wlr_egl *egl_create(void) {
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