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[idd/client/obs] hdr: wire up the SdrWhiteLevel from the capture

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This commit is contained in:
Geoffrey McRae
2026-07-17 17:49:49 +10:00
parent 3b69e6bdf4
commit 2006fb640f
17 changed files with 111 additions and 66 deletions
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31
client/renderers/EGL/cursor.c
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@@ -46,6 +46,7 @@ struct CursorTex
GLuint uRotate;
GLuint uCBMode;
GLint uMapSDRtoPQ;
GLint uSDRWhiteLevel;
};
struct CursorPos
@@ -79,6 +80,7 @@ struct EGL_Cursor
_Atomic(struct CursorSize) size;
_Atomic(float) scale;
_Atomic(bool) mapSDRtoPQ;
_Atomic(float) sdrWhiteLevel;
struct CursorTex norm;
struct CursorTex mono;
@@ -108,11 +110,12 @@ static bool cursorTexInit(struct CursorTex * t,
return false;
}
t->uMousePos = egl_shaderGetUniform(t->shader, "mouse" );
t->uScale = egl_shaderGetUniform(t->shader, "scale" );
t->uRotate = egl_shaderGetUniform(t->shader, "rotate" );
t->uCBMode = egl_shaderGetUniform(t->shader, "cbMode" );
t->uMapSDRtoPQ = egl_shaderGetUniform(t->shader, "mapSDRtoPQ");
t->uMousePos = egl_shaderGetUniform(t->shader, "mouse" );
t->uScale = egl_shaderGetUniform(t->shader, "scale" );
t->uRotate = egl_shaderGetUniform(t->shader, "rotate" );
t->uCBMode = egl_shaderGetUniform(t->shader, "cbMode" );
t->uMapSDRtoPQ = egl_shaderGetUniform(t->shader, "mapSDRtoPQ" );
t->uSDRWhiteLevel = egl_shaderGetUniform(t->shader, "sdrWhiteLevel");
return true;
}
@@ -121,11 +124,12 @@ static inline void setCursorTexUniforms(EGL_Cursor * cursor,
struct CursorTex * t, bool mono, float x, float y,
float w, float h, float scale)
{
glUniform4f(t->uMousePos , x, y, w, mono ? h / 2 : h);
glUniform1f(t->uScale , scale);
glUniform1i(t->uRotate , cursor->rotate);
glUniform1i(t->uCBMode , cursor->cbMode);
glUniform1i(t->uMapSDRtoPQ, !mono && atomic_load(&cursor->mapSDRtoPQ));
glUniform4f(t->uMousePos , x, y, w, mono ? h / 2 : h);
glUniform1f(t->uScale , scale);
glUniform1i(t->uRotate , cursor->rotate);
glUniform1i(t->uCBMode , cursor->cbMode);
glUniform1i(t->uMapSDRtoPQ , !mono && atomic_load(&cursor->mapSDRtoPQ));
glUniform1f(t->uSDRWhiteLevel, atomic_load(&cursor->sdrWhiteLevel));
}
static void cursorTexFree(struct CursorTex * t)
@@ -174,6 +178,8 @@ bool egl_cursorInit(EGL_Cursor ** cursor)
atomic_init(&(*cursor)->size , size );
atomic_init(&(*cursor)->scale , 1.0f );
atomic_init(&(*cursor)->mapSDRtoPQ, false);
atomic_init(&(*cursor)->sdrWhiteLevel,
(float)KVMFR_SDR_WHITE_LEVEL_DEFAULT);
return true;
}
@@ -435,7 +441,10 @@ struct CursorState egl_cursorRender(EGL_Cursor * cursor,
return state;
}
void egl_cursorSetHDRState(EGL_Cursor * cursor, bool hdrActive, bool hdrPQ)
void egl_cursorSetHDRState(EGL_Cursor * cursor, bool hdrActive, bool hdrPQ,
float sdrWhiteLevel)
{
atomic_store(&cursor->sdrWhiteLevel, sdrWhiteLevel > 0.0f ?
sdrWhiteLevel : (float)KVMFR_SDR_WHITE_LEVEL_DEFAULT);
atomic_store(&cursor->mapSDRtoPQ, hdrActive && hdrPQ);
}

3
client/renderers/EGL/cursor.h
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@@ -53,4 +53,5 @@ void egl_cursorSetState(EGL_Cursor * cursor, const bool visible,
struct CursorState egl_cursorRender(EGL_Cursor * cursor,
LG_RendererRotate rotate, int width, int height);
void egl_cursorSetHDRState(EGL_Cursor * cursor, bool hdrActive, bool hdrPQ);
void egl_cursorSetHDRState(EGL_Cursor * cursor, bool hdrActive, bool hdrPQ,
float sdrWhiteLevel);

3
client/renderers/EGL/egl.c
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@@ -631,7 +631,8 @@ static bool egl_onFrameFormat(LG_Renderer * renderer, const LG_RendererFormat fo
egl_desktopSetNativeHDR(this->desktop, useNativeHDR);
// Tell the cursor shader whether to map SDR cursor colors into PQ
egl_cursorSetHDRState(this->cursor, useNativeHDR, format.hdrPQ);
egl_cursorSetHDRState(this->cursor, useNativeHDR, format.hdrPQ,
format.sdrWhiteLevel);
egl_update_scale_type(this);
egl_damageSetup(this->damage, format.frameWidth, format.frameHeight);

3
client/renderers/EGL/shader/cursor_mono.frag
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@@ -10,6 +10,7 @@ out vec4 color;
uniform sampler2D sampler1;
uniform float scale;
uniform bool mapSDRtoPQ;
uniform float sdrWhiteLevel;
void main()
{
@@ -32,7 +33,7 @@ void main()
if (mapSDRtoPQ)
{
vec3 linear = bt709to2020(srgb2lin(tmp.rgb));
tmp.rgb = lin2pq(linear * (203.0 / 10000.0));
tmp.rgb = lin2pq(linear * (sdrWhiteLevel / 10000.0));
}
color = tmp;

3
client/renderers/EGL/shader/cursor_rgb.frag
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@@ -12,6 +12,7 @@ uniform sampler2D sampler1;
uniform float scale;
uniform int cbMode;
uniform bool mapSDRtoPQ;
uniform float sdrWhiteLevel;
void main()
{
@@ -38,7 +39,7 @@ void main()
// then premultiply again so the blend operation remains valid.
vec3 srgb = clamp(color.rgb / color.a, 0.0, 1.0);
vec3 linear = bt709to2020(srgb2lin(srgb));
color.rgb = lin2pq(linear * (203.0 / 10000.0)) * color.a;
color.rgb = lin2pq(linear * (sdrWhiteLevel / 10000.0)) * color.a;
}
else
color.rgb = vec3(0.0);