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Backends: Allegro5: Fixed texture format setup. (#8770, #8465)

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Amend/fix ee8941e.
This commit is contained in:
ocornut
2025-08-12 15:02:58 +02:00
parent e2a662eed8
commit e1baadba84
2 changed files with 8 additions and 3 deletions
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9
backends/imgui_impl_allegro5.cpp
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@@ -268,8 +268,6 @@ 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 +277,15 @@ 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);
@@ -521,7 +524,7 @@ void ImGui_ImplAllegro5_SetDisplay(ALLEGRO_DISPLAY* display)
if (bd->Display && !bd->VertexDecl)
{
// Create custom vertex declaration.
// 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[] =