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fix software renderer texture uploading

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This commit is contained in:
tildearrow 2025-10-21 17:24:29 -05:00
parent 511de797cb
commit 396bef8f18
1 changed files with 12 additions and 8 deletions
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20
extern/imgui_software_renderer/imgui_sw.cpp vendored
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@ -765,17 +765,21 @@ void ImGui_ImplSW_UpdateTexture(ImTextureData* tex) {
// update region
if (t->isAlpha) {
unsigned char* data=(unsigned char*)t->pixels;
int i_y=t->width*tex->UpdateRect.y;
for (int i=tex->UpdateRect.y; i<tex->UpdateRect.y+tex->UpdateRect.w; i++) {
memcpy(&data[i_y],tex->GetPixelsAt(tex->UpdateRect.x,i),tex->UpdateRect.w);
i_y+=t->width;
for (ImTextureRect& h: tex->Updates) {
int i_y=t->width*h.y;
for (int i=h.y; i<h.y+h.h; i++) {
memcpy(&data[i_y+h.x],tex->GetPixelsAt(h.x,i),h.w);
i_y+=t->width;
}
}
} else {
uint32_t* data=t->pixels;
int i_y=t->width*tex->UpdateRect.y;
for (int i=tex->UpdateRect.y; i<tex->UpdateRect.y+tex->UpdateRect.w; i++) {
memcpy(&data[i_y],tex->GetPixelsAt(tex->UpdateRect.x,i),tex->UpdateRect.w*sizeof(uint32_t));
i_y+=t->width;
for (ImTextureRect& h: tex->Updates) {
int i_y=t->width*h.y;
for (int i=h.y; i<h.y+h.h; i++) {
memcpy(&data[i_y+h.x],tex->GetPixelsAt(h.x,i),h.w*sizeof(uint32_t));
i_y+=t->width;
}
}
}