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Introduce IMGUI_USE_BGRA_PACKED_COLOR in imconfig.h.

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When IMGUI_USE_BGRA_PACKED_COLOR is defined packed color hold in ImU32 use BGRA format instead RGBA.
This commit is contained in:
Michał Cichoń
2016-08-05 11:04:05 +02:00
parent 82dcdc9dfc
commit d75d2b1871
3 changed files with 24 additions and 6 deletions
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14
imgui.cpp
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@@ -1195,16 +1195,20 @@ int ImTextCountUtf8BytesFromStr(const ImWchar* in_text, const ImWchar* in_text_e
ImVec4 ImGui::ColorConvertU32ToFloat4(ImU32 in)
{
float s = 1.0f/255.0f;
return ImVec4((in & 0xFF) * s, ((in >> 8) & 0xFF) * s, ((in >> 16) & 0xFF) * s, (in >> 24) * s);
return ImVec4(
((in >> IM_COL32_R_SHIFT) & 0xFF) * s,
((in >> IM_COL32_G_SHIFT) & 0xFF) * s,
((in >> IM_COL32_B_SHIFT) & 0xFF) * s,
((in >> IM_COL32_A_SHIFT) & 0xFF) * s);
}
ImU32 ImGui::ColorConvertFloat4ToU32(const ImVec4& in)
{
ImU32 out;
out = ((ImU32)IM_F32_TO_INT8_SAT(in.x));
out |= ((ImU32)IM_F32_TO_INT8_SAT(in.y)) << 8;
out |= ((ImU32)IM_F32_TO_INT8_SAT(in.z)) << 16;
out |= ((ImU32)IM_F32_TO_INT8_SAT(in.w)) << 24;
out = ((ImU32)IM_F32_TO_INT8_SAT(in.x)) << IM_COL32_R_SHIFT;
out |= ((ImU32)IM_F32_TO_INT8_SAT(in.y)) << IM_COL32_G_SHIFT;
out |= ((ImU32)IM_F32_TO_INT8_SAT(in.z)) << IM_COL32_B_SHIFT;
out |= ((ImU32)IM_F32_TO_INT8_SAT(in.w)) << IM_COL32_A_SHIFT;
return out;
}