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egl: follow active native HDR state

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Keep software HDR mapping enabled until the display server activates the
requested image description. Re-evaluate the state while rendering so
asynchronous readiness or failure updates the desktop, cursor, and overlay
together with a full redraw.
This commit is contained in:
Geoffrey McRae
2026-07-19 03:43:26 +10:00
parent 94a805ab4b
commit e9d0c88764
1 changed files with 36 additions and 23 deletions
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59
client/renderers/EGL/egl.c
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@@ -128,6 +128,7 @@ struct Inst
bool configSupportsHDR; // true if we probed FP16 or 10-bit EGL config
bool hdr; // true if current frame format is HDR
bool nativeHDR; // true only while the surface HDR description is active
};
static struct Option egl_options[] =
@@ -597,6 +598,34 @@ static bool egl_onMouseEvent(LG_Renderer * renderer, const bool visible,
return true;
}
static bool egl_updateHDRState(struct Inst * this, bool force)
{
bool nativeHDR = false;
app_getProp(LG_DS_NATIVE_HDR, &nativeHDR);
const bool useNativeHDR = this->format.hdr && nativeHDR &&
!app_getHDRDescFailed();
if (!force && this->nativeHDR == useNativeHDR)
return false;
this->nativeHDR = useNativeHDR;
egl_desktopSetNativeHDR(this->desktop, useNativeHDR);
egl_cursorSetHDRState(this->cursor, useNativeHDR, this->format.hdrPQ,
this->format.sdrWhiteLevel);
LG_DSHDRWhiteLevels whiteLevels =
{
.pq = 203,
.scRGB = 80,
};
if (useNativeHDR && !app_getProp(LG_DS_HDR_WHITE_LEVELS, &whiteLevels))
DEBUG_WARN("Display server did not provide native HDR white levels");
egl_hdrOverlaySetState(this->hdrOverlay, useNativeHDR,
this->format.hdrPQ,
this->format.hdrPQ ? whiteLevels.pq : whiteLevels.scRGB);
return true;
}
static bool egl_onFrameFormat(LG_Renderer * renderer, const LG_RendererFormat format)
{
struct Inst * this = UPCAST(struct Inst, renderer);
@@ -645,28 +674,7 @@ static bool egl_onFrameFormat(LG_Renderer * renderer, const LG_RendererFormat fo
"without a color-managed compositor; tones may be incorrect");
}
// If the display server supports native HDR (via setHDRImageDescription),
// disable software tone-mapping to avoid double tone-mapping.
// However, if the last call to setHDRImageDescription actually failed
// (e.g., compositor missing required primaries), keep tone-mapping on.
bool nativeHDR = false;
app_getProp(LG_DS_NATIVE_HDR, &nativeHDR);
bool useNativeHDR = format.hdr && nativeHDR && !app_getHDRDescFailed();
egl_desktopSetNativeHDR(this->desktop, useNativeHDR);
// Tell the cursor shader whether to map SDR cursor colors into PQ
egl_cursorSetHDRState(this->cursor, useNativeHDR, format.hdrPQ,
format.sdrWhiteLevel);
LG_DSHDRWhiteLevels whiteLevels =
{
.pq = 203,
.scRGB = 80,
};
if (useNativeHDR && !app_getProp(LG_DS_HDR_WHITE_LEVELS, &whiteLevels))
DEBUG_WARN("Display server did not provide native HDR white levels");
egl_hdrOverlaySetState(this->hdrOverlay, useNativeHDR, format.hdrPQ,
format.hdrPQ ? whiteLevels.pq : whiteLevels.scRGB);
egl_updateHDRState(this, true);
egl_update_scale_type(this);
egl_damageSetup(this->damage, format.frameWidth, format.frameHeight);
@@ -1194,7 +1202,9 @@ static bool egl_render(LG_Renderer * renderer, LG_RendererRotate rotate,
struct Inst * this = UPCAST(struct Inst, renderer);
egl_stateCheckShared();
EGLint bufferAge = egl_bufferAge(this);
bool renderAll = invalidateWindow || this->hadOverlay ||
const bool hdrStateChanged = egl_updateHDRState(this, false);
bool renderAll = hdrStateChanged ||
invalidateWindow || this->hadOverlay ||
bufferAge <= 0 || bufferAge > MAX_BUFFER_AGE ||
this->showSpice;
@@ -1236,6 +1246,9 @@ static bool egl_render(LG_Renderer * renderer, LG_RendererRotate rotate,
this->desktopDamage[this->desktopDamageIdx].count = 0;
});
if (hdrStateChanged)
desktopDamage->count = -1;
if (likely(!renderAll))
{
double matrix[6];