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Textures: Added ImTextureData::UsedRect.

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# Conflicts:
#	imgui_internal.h
This commit is contained in:
ocornut 2025-02-19 15:41:26 +01:00 • committed by ocornut
parent 2bf6879dae
commit e98a314e06
4 changed files with 15 additions and 5 deletions
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7
imgui_draw.cpp
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@ -2439,6 +2439,7 @@ void ImTextureData::Create(ImTextureFormat format, int w, int h)
Pixels = (unsigned char*)IM_ALLOC(Width * Height * BytesPerPixel);
IM_ASSERT(Pixels != NULL);
memset(Pixels, 0, Width * Height * BytesPerPixel);
UsedRect.x = UsedRect.y = UsedRect.w = UsedRect.h = 0;
UpdateRect.x = UpdateRect.y = (unsigned short)~0;
UpdateRect.w = UpdateRect.h = 0;
}
@ -2918,6 +2919,10 @@ void ImFontAtlasTextureBlockQueueUpload(ImFontAtlas* atlas, ImTextureData* tex,
tex->UpdateRect.y = ImMin(tex->UpdateRect.y, req.y);
tex->UpdateRect.w = (unsigned short)(new_x1 - tex->UpdateRect.x);
tex->UpdateRect.h = (unsigned short)(new_y1 - tex->UpdateRect.y);
tex->UsedRect.x = ImMin(tex->UsedRect.x, req.x);
tex->UsedRect.y = ImMin(tex->UsedRect.y, req.y);
tex->UsedRect.w = (unsigned short)(ImMax(tex->UsedRect.x + tex->UsedRect.w, req.x + req.w) - tex->UsedRect.x);
tex->UsedRect.h = (unsigned short)(ImMax(tex->UsedRect.y + tex->UsedRect.h, req.y + req.h) - tex->UsedRect.y);
atlas->TexIsBuilt = false;
// No need to queue if status is _WantCreate
@ -3957,7 +3962,7 @@ void ImFontAtlasBuildGrowTexture(ImFontAtlas* atlas, int old_tex_w, int old_tex_
old_tex_h = atlas->TexData->Height;
// FIXME-NEWATLAS-V2: What to do when reaching limits exposed by backend?
// FIXME-NEWATLAS-V2: Does ImFontAtlasFlags_NoPowerOfTwoHeight makes sense now? Allow 'lock' and 'compact' operations? Could we expose e.g. tex->UsedRect.
// FIXME-NEWATLAS-V2: Does ImFontAtlasFlags_NoPowerOfTwoHeight makes sense now? Allow 'lock' and 'compact' operations?
IM_ASSERT(ImIsPowerOfTwo(old_tex_w) && ImIsPowerOfTwo(old_tex_h));
IM_ASSERT(ImIsPowerOfTwo(atlas->TexMinWidth) && ImIsPowerOfTwo(atlas->TexMaxWidth) && ImIsPowerOfTwo(atlas->TexMinHeight) && ImIsPowerOfTwo(atlas->TexMaxHeight));