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Fonts: internal rendering uses higher level functions.

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ocornut
2025-04-07 18:42:06 +02:00
parent 12599da53d
commit d789263e08
1 changed files with 19 additions and 17 deletions
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36
imgui_draw.cpp
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@@ -3461,7 +3461,8 @@ static void ImFontAtlasBuildUpdateBasicTexData(ImFontAtlas* atlas, bool add_and_
builder->PackIdMouseCursors = ImFontAtlasPackAddRect(atlas, pack_size.x, pack_size.y);
if (builder->PackIdMouseCursors == ImFontAtlasRectId_Invalid)
return;
ImTextureRect* r = ImFontAtlasPackGetRect(atlas, builder->PackIdMouseCursors);
ImFontAtlasRect r;
atlas->GetCustomRect(builder->PackIdMouseCursors, &r);
// Draw to texture
if (add_and_draw)
@@ -3469,19 +3470,19 @@ static void ImFontAtlasBuildUpdateBasicTexData(ImFontAtlas* atlas, bool add_and_
if (atlas->Flags & ImFontAtlasFlags_NoMouseCursors)
{
// 2x2 white pixels
ImFontAtlasBuildRenderBitmapFromString(atlas, r->x, r->y, 2, 2, "XX" "XX", 'X');
ImFontAtlasBuildRenderBitmapFromString(atlas, r.x, r.y, 2, 2, "XX" "XX", 'X');
}
else
{
// 2x2 white pixels + mouse cursors
const int x_for_white = r->x;
const int x_for_black = r->x + FONT_ATLAS_DEFAULT_TEX_DATA_W + 1;
ImFontAtlasBuildRenderBitmapFromString(atlas, x_for_white, r->y, FONT_ATLAS_DEFAULT_TEX_DATA_W, FONT_ATLAS_DEFAULT_TEX_DATA_H, FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS, '.');
ImFontAtlasBuildRenderBitmapFromString(atlas, x_for_black, r->y, FONT_ATLAS_DEFAULT_TEX_DATA_W, FONT_ATLAS_DEFAULT_TEX_DATA_H, FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS, 'X');
const int x_for_white = r.x;
const int x_for_black = r.x + FONT_ATLAS_DEFAULT_TEX_DATA_W + 1;
ImFontAtlasBuildRenderBitmapFromString(atlas, x_for_white, r.y, FONT_ATLAS_DEFAULT_TEX_DATA_W, FONT_ATLAS_DEFAULT_TEX_DATA_H, FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS, '.');
ImFontAtlasBuildRenderBitmapFromString(atlas, x_for_black, r.y, FONT_ATLAS_DEFAULT_TEX_DATA_W, FONT_ATLAS_DEFAULT_TEX_DATA_H, FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS, 'X');
}
}
ImFontAtlasTextureBlockQueueUpload(atlas, atlas->TexData, r->x, r->y, r->w, r->h);
atlas->TexUvWhitePixel = ImVec2((r->x + 0.5f) * atlas->TexUvScale.x, (r->y + 0.5f) * atlas->TexUvScale.y);
ImFontAtlasTextureBlockQueueUpload(atlas, atlas->TexData, r.x, r.y, r.w, r.h);
atlas->TexUvWhitePixel = ImVec2((r.x + 0.5f) * atlas->TexUvScale.x, (r.y + 0.5f) * atlas->TexUvScale.y);
}
static void ImFontAtlasBuildUpdateLinesTexData(ImFontAtlas* atlas, bool add_and_draw)
@@ -3497,7 +3498,8 @@ static void ImFontAtlasBuildUpdateLinesTexData(ImFontAtlas* atlas, bool add_and_
builder->PackIdLinesTexData = ImFontAtlasPackAddRect(atlas, pack_size.x, pack_size.y);
if (builder->PackIdLinesTexData == ImFontAtlasRectId_Invalid)
return;
ImTextureRect* r = ImFontAtlasPackGetRect(atlas, builder->PackIdLinesTexData);
ImFontAtlasRect r;
atlas->GetCustomRect(builder->PackIdLinesTexData, &r);
// Register texture region for thick lines
// The +2 here is to give space for the end caps, whilst height +1 is to accommodate the fact we have a zero-width row
@@ -3508,18 +3510,18 @@ static void ImFontAtlasBuildUpdateLinesTexData(ImFontAtlas* atlas, bool add_and_
// Each line consists of at least two empty pixels at the ends, with a line of solid pixels in the middle
int y = n;
int line_width = n;
int pad_left = (r->w - line_width) / 2;
int pad_right = r->w - (pad_left + line_width);
int pad_left = (r.w - line_width) / 2;
int pad_right = r.w - (pad_left + line_width);
// Write each slice
IM_ASSERT(pad_left + line_width + pad_right == r->w && y < r->h); // Make sure we're inside the texture bounds before we start writing pixels
IM_ASSERT(pad_left + line_width + pad_right == r.w && y < r.h); // Make sure we're inside the texture bounds before we start writing pixels
if (add_and_draw)
{
switch (tex->Format)
{
case ImTextureFormat_Alpha8:
{
ImU8* write_ptr = (ImU8*)tex->GetPixelsAt(r->x, r->y + y);
ImU8* write_ptr = (ImU8*)tex->GetPixelsAt(r.x, r.y + y);
for (int i = 0; i < pad_left; i++)
*(write_ptr + i) = 0x00;
@@ -3532,7 +3534,7 @@ static void ImFontAtlasBuildUpdateLinesTexData(ImFontAtlas* atlas, bool add_and_
}
case ImTextureFormat_RGBA32:
{
ImU32* write_ptr = (ImU32*)(void*)tex->GetPixelsAt(r->x, r->y + y);
ImU32* write_ptr = (ImU32*)(void*)tex->GetPixelsAt(r.x, r.y + y);
for (int i = 0; i < pad_left; i++)
*(write_ptr + i) = IM_COL32(255, 255, 255, 0);
@@ -3547,12 +3549,12 @@ static void ImFontAtlasBuildUpdateLinesTexData(ImFontAtlas* atlas, bool add_and_
}
// Calculate UVs for this line
ImVec2 uv0 = ImVec2((float)(r->x + pad_left - 1), (float)(r->y + y)) * atlas->TexUvScale;
ImVec2 uv1 = ImVec2((float)(r->x + pad_left + line_width + 1), (float)(r->y + y + 1)) * atlas->TexUvScale;
ImVec2 uv0 = ImVec2((float)(r.x + pad_left - 1), (float)(r.y + y)) * atlas->TexUvScale;
ImVec2 uv1 = ImVec2((float)(r.x + pad_left + line_width + 1), (float)(r.y + y + 1)) * atlas->TexUvScale;
float half_v = (uv0.y + uv1.y) * 0.5f; // Calculate a constant V in the middle of the row to avoid sampling artifacts
atlas->TexUvLines[n] = ImVec4(uv0.x, half_v, uv1.x, half_v);
}
ImFontAtlasTextureBlockQueueUpload(atlas, tex, r->x, r->y, r->w, r->h);
ImFontAtlasTextureBlockQueueUpload(atlas, tex, r.x, r.y, r.w, r.h);
}
//-----------------------------------------------------------------------------------------------------------------------------