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Fonts: in ShowFontAtlas() preserve open-state for latest texture. Improve debug display.

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ocornut 2025-03-06 19:57:49 +01:00
parent c98e3c0eff
commit 40f988ce2a
3 changed files with 30 additions and 12 deletions
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17
imgui_draw.cpp
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@ -2420,7 +2420,7 @@ ImFontConfig::ImFontConfig()
// - ImTextureData::DestroyPixels()
//-----------------------------------------------------------------------------
static int GetTextureFormatBytesPerPixel(ImTextureFormat format)
int ImTextureDataGetFormatBytesPerPixel(ImTextureFormat format)
{
switch (format)
{
@ -2431,13 +2431,24 @@ static int GetTextureFormatBytesPerPixel(ImTextureFormat format)
return 0;
}
const char* ImTextureDataGetFormatName(ImTextureFormat format)
{
switch (format)
{
case ImTextureFormat_Alpha8: return "Alpha8";
case ImTextureFormat_RGBA32: return "RGBA32";
}
return "N/A";
}
void ImTextureData::Create(ImTextureFormat format, int w, int h)
{
DestroyPixels();
Format = format;
Width = w;
Height = h;
BytesPerPixel = GetTextureFormatBytesPerPixel(format);
BytesPerPixel = ImTextureDataGetFormatBytesPerPixel(format);
UseColors = false;
Pixels = (unsigned char*)IM_ALLOC(Width * Height * BytesPerPixel);
IM_ASSERT(Pixels != NULL);
@ -2798,7 +2809,7 @@ void ImFontAtlasTextureBlockConvert(const unsigned char* src_pixels, ImTextureFo
IM_ASSERT(src_pixels != NULL && dst_pixels != NULL);
if (src_fmt == dst_fmt)
{
int line_sz = w * GetTextureFormatBytesPerPixel(src_fmt);
int line_sz = w * ImTextureDataGetFormatBytesPerPixel(src_fmt);
for (int ny = h; ny > 0; ny--, src_pixels += src_pitch, dst_pixels += dst_pitch)
memcpy(dst_pixels, src_pixels, line_sz);
}