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Fix splash screen upside down on Android

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Fixes an issue introduced in #96439 (see
https://github.com/godotengine/godot/pull/96439#issuecomment-2447288702)

Godot was relying on Java's
activity.getWindowManager().getDefaultDisplay().getRotation(); to apply
pre-rotation but this is wrong.

First, getRotation() may temporarily return a different value from the
correct one; which is what was causing the splash screen to be upside
down. It would return -90 instead of 90 for the first rendered frame.

But unfortunately, the splash screen is just one frame rendered for a
very long time, so the error lingered for a long time for everyone to
see.

Second, to determine what rotation to use, we should be looking at what
Vulkan told us, which is the value we pass to
VkSurfaceTransformFlagBitsKHR::preTransform.

This commit removes the now-unnecessary
screen_get_internal_current_rotation() function (which was introduced by
#96439) and now saves the preTransform value in the swapchain.
This commit is contained in:
Matias N. Goldberg
2024-10-31 16:52:26 -03:00
parent ef8d981267
commit b9a2f108fc
12 changed files with 42 additions and 53 deletions
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4
servers/rendering/renderer_rd/renderer_compositor_rd.cpp
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@@ -67,7 +67,7 @@ void RendererCompositorRD::blit_render_targets_to_screen(DisplayServer::WindowID
RD::get_singleton()->draw_list_bind_uniform_set(draw_list, render_target_descriptors[rd_texture], 0);
// We need to invert the phone rotation.
int screen_rotation_degrees = -DisplayServer::get_singleton()->screen_get_internal_current_rotation();
const int screen_rotation_degrees = -RD::get_singleton()->screen_get_pre_rotation_degrees(p_screen);
float screen_rotation = Math::deg_to_rad((float)screen_rotation_degrees);
blit.push_constant.rotation_cos = Math::cos(screen_rotation);
@@ -238,7 +238,7 @@ void RendererCompositorRD::set_boot_image(const Ref<Image> &p_image, const Color
RD::get_singleton()->draw_list_bind_index_array(draw_list, blit.array);
RD::get_singleton()->draw_list_bind_uniform_set(draw_list, uset, 0);
int screen_rotation_degrees = DisplayServer::get_singleton()->screen_get_internal_current_rotation();
const int screen_rotation_degrees = -RD::get_singleton()->screen_get_pre_rotation_degrees(DisplayServer::MAIN_WINDOW_ID);
float screen_rotation = Math::deg_to_rad((float)screen_rotation_degrees);
blit.push_constant.rotation_cos = Math::cos(screen_rotation);
blit.push_constant.rotation_sin = Math::sin(screen_rotation);