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Merge branch 'master' into docking

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ocornut
2025-08-13 17:31:15 +02:00
parent 031a18c417 45acd5e0e8
commit 160e3683ab
12 changed files with 100 additions and 36 deletions
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54
backends/imgui_impl_allegro5.cpp
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@@ -22,6 +22,8 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2025-08-12: Inputs: fixed missing support for ImGuiKey_PrintScreen under Windows, as raw Allegro 5 does not receive it.
// 2025-08-12: Added ImGui_ImplAllegro5_SetDisplay() function to change current ALLEGRO_DISPLAY, as Allegro applications often need to do that.
// 2025-07-07: Fixed texture update broken on some platforms where ALLEGRO_LOCK_WRITEONLY needed all texels to be rewritten.
// 2025-06-11: Added support for ImGuiBackendFlags_RendererHasTextures, for dynamic font atlas. Removed ImGui_ImplSDLGPU3_CreateFontsTexture() and ImGui_ImplSDLGPU3_DestroyFontsTexture().
// 2025-02-18: Added ImGuiMouseCursor_Wait and ImGuiMouseCursor_Progress mouse cursor support.
@@ -268,8 +270,6 @@ void ImGui_ImplAllegro5_UpdateTexture(ImTextureData* tex)
al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP | ALLEGRO_MIN_LINEAR | ALLEGRO_MAG_LINEAR);
al_set_new_bitmap_format(ALLEGRO_PIXEL_FORMAT_ABGR_8888_LE);
ALLEGRO_BITMAP* cpu_bitmap = al_create_bitmap(tex->Width, tex->Height);
al_set_new_bitmap_flags(new_bitmap_flags);
al_set_new_bitmap_format(new_bitmap_format);
IM_ASSERT(cpu_bitmap != nullptr && "Backend failed to create texture!");
// Upload pixels
@@ -279,10 +279,15 @@ void ImGui_ImplAllegro5_UpdateTexture(ImTextureData* tex)
al_unlock_bitmap(cpu_bitmap);
// Convert software texture to hardware texture.
al_set_new_bitmap_flags(ALLEGRO_VIDEO_BITMAP);
al_set_new_bitmap_format(ALLEGRO_PIXEL_FORMAT_ANY_32_WITH_ALPHA);
ALLEGRO_BITMAP* gpu_bitmap = al_clone_bitmap(cpu_bitmap);
al_destroy_bitmap(cpu_bitmap);
IM_ASSERT(gpu_bitmap != nullptr && "Backend failed to create texture!");
al_set_new_bitmap_flags(new_bitmap_flags);
al_set_new_bitmap_format(new_bitmap_format);
// Store identifiers
tex->SetTexID((ImTextureID)(intptr_t)gpu_bitmap);
tex->SetStatus(ImTextureStatus_OK);
@@ -477,20 +482,9 @@ bool ImGui_ImplAllegro5_Init(ALLEGRO_DISPLAY* display)
io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional)
io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures; // We can honor ImGuiPlatformIO::Textures[] requests during render.
bd->Display = display;
bd->LastCursor = ALLEGRO_SYSTEM_MOUSE_CURSOR_NONE;
// Create custom vertex declaration.
// Unfortunately Allegro doesn't support 32-bit packed colors so we have to convert them to 4 floats.
// We still use a custom declaration to use 'ALLEGRO_PRIM_TEX_COORD' instead of 'ALLEGRO_PRIM_TEX_COORD_PIXEL' else we can't do a reliable conversion.
ALLEGRO_VERTEX_ELEMENT elems[] =
{
{ ALLEGRO_PRIM_POSITION, ALLEGRO_PRIM_FLOAT_2, offsetof(ImDrawVertAllegro, pos) },
{ ALLEGRO_PRIM_TEX_COORD, ALLEGRO_PRIM_FLOAT_2, offsetof(ImDrawVertAllegro, uv) },
{ ALLEGRO_PRIM_COLOR_ATTR, 0, offsetof(ImDrawVertAllegro, col) },
{ 0, 0, 0 }
};
bd->VertexDecl = al_create_vertex_decl(elems, sizeof(ImDrawVertAllegro));
ImGui_ImplAllegro5_SetDisplay(display);
#if ALLEGRO_HAS_CLIPBOARD
ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
@@ -519,6 +513,33 @@ void ImGui_ImplAllegro5_Shutdown()
IM_DELETE(bd);
}
void ImGui_ImplAllegro5_SetDisplay(ALLEGRO_DISPLAY* display)
{
ImGui_ImplAllegro5_Data* bd = ImGui_ImplAllegro5_GetBackendData();
bd->Display = display;
if (bd->VertexDecl)
{
al_destroy_vertex_decl(bd->VertexDecl);
bd->VertexDecl = NULL;
}
if (bd->Display && !bd->VertexDecl)
{
// Create custom vertex declaration.
// Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats.
// We still use a custom declaration to use 'ALLEGRO_PRIM_TEX_COORD' instead of 'ALLEGRO_PRIM_TEX_COORD_PIXEL' else we can't do a reliable conversion.
ALLEGRO_VERTEX_ELEMENT elems[] =
{
{ ALLEGRO_PRIM_POSITION, ALLEGRO_PRIM_FLOAT_2, offsetof(ImDrawVertAllegro, pos) },
{ ALLEGRO_PRIM_TEX_COORD, ALLEGRO_PRIM_FLOAT_2, offsetof(ImDrawVertAllegro, uv) },
{ ALLEGRO_PRIM_COLOR_ATTR, 0, offsetof(ImDrawVertAllegro, col) },
{ 0, 0, 0 }
};
bd->VertexDecl = al_create_vertex_decl(elems, sizeof(ImDrawVertAllegro));
}
}
// ev->keyboard.modifiers seems always zero so using that...
static void ImGui_ImplAllegro5_UpdateKeyModifiers()
{
@@ -660,6 +681,11 @@ void ImGui_ImplAllegro5_NewFrame()
io.DeltaTime = bd->Time > 0.0 ? (float)(current_time - bd->Time) : (float)(1.0f / 60.0f);
bd->Time = current_time;
// Allegro 5 doesn't receive PrintScreen under Windows
#ifdef _WIN32
io.AddKeyEvent(ImGuiKey_PrintScreen, (::GetAsyncKeyState(VK_SNAPSHOT) & 0x8000) != 0);
#endif
// Setup mouse cursor shape
ImGui_ImplAllegro5_UpdateMouseCursor();
}