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Backends: Replace std::clamp with ImClamp to satisfy C++11

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This commit is contained in:
moonpower 2025-12-26 03:37:07 +01:00
parent c57a5b31db
commit a941c96d1f
1 changed files with 16 additions and 6 deletions
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22
backends/imgui_impl_sdlsurface2.cpp
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@ -7,6 +7,16 @@
#include <cstring> #include <cstring>
#include <algorithm> #include <algorithm>
// No clamp in C++11
template<typename T>
static inline T ImClamp(T v, T lo, T hi)
{
if (v < lo) return lo;
if (v > hi) return hi;
return v;
}
static SDL_Surface* g_TargetSurface = nullptr; static SDL_Surface* g_TargetSurface = nullptr;
static SDL_Surface* g_FontSurface = nullptr; static SDL_Surface* g_FontSurface = nullptr;
@ -270,10 +280,10 @@ void ImGui_ImplSDLSurface2_RenderDrawData(ImDrawData* draw_data)
float b = w0 * c0[2] + w1 * c1[2] + w2 * c2[2]; float b = w0 * c0[2] + w1 * c1[2] + w2 * c2[2];
float a = w0 * c0[3] + w1 * c1[3] + w2 * c2[3]; float a = w0 * c0[3] + w1 * c1[3] + w2 * c2[3];
Uint8 out_r = (Uint8)(std::clamp(r, 0.0f, 1.0f) * 255.0f); Uint8 out_r = (Uint8)(ImClamp(r, 0.0f, 1.0f) * 255.0f);
Uint8 out_g = (Uint8)(std::clamp(g, 0.0f, 1.0f) * 255.0f); Uint8 out_g = (Uint8)(ImClamp(g, 0.0f, 1.0f) * 255.0f);
Uint8 out_b = (Uint8)(std::clamp(b, 0.0f, 1.0f) * 255.0f); Uint8 out_b = (Uint8)(ImClamp(b, 0.0f, 1.0f) * 255.0f);
Uint8 out_a = (Uint8)(std::clamp(a, 0.0f, 1.0f) * 255.0f); Uint8 out_a = (Uint8)(ImClamp(a, 0.0f, 1.0f) * 255.0f);
if (tex) if (tex)
{ {
@ -283,8 +293,8 @@ void ImGui_ImplSDLSurface2_RenderDrawData(ImDrawData* draw_data)
int tx = (int)(u * (tex->w - 1) + 0.5f); int tx = (int)(u * (tex->w - 1) + 0.5f);
int ty = (int)(v * (tex->h - 1) + 0.5f); int ty = (int)(v * (tex->h - 1) + 0.5f);
tx = std::clamp(tx, 0, tex->w - 1); tx = ImClamp(tx, 0, tex->w - 1);
ty = std::clamp(ty, 0, tex->h - 1); ty = ImClamp(ty, 0, tex->h - 1);
Uint32 tpx = GetPixel(tex, tx, ty); Uint32 tpx = GetPixel(tex, tx, ty);
Uint8 tr, tg, tb, ta; Uint8 tr, tg, tb, ta;