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Fixed Timestep Interpolation (2D)

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Adds fixed timestep interpolation to the rendering server (2D only).
Switchable on and off with a project setting (default is off).

Co-authored-by: lawnjelly <lawnjelly@gmail.com>
This commit is contained in:
Ricardo Buring
2024-02-17 00:57:32 +01:00
parent fe01776f05
commit 2ed2ccc2d8
39 changed files with 1040 additions and 75 deletions
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13
servers/rendering/renderer_rd/renderer_canvas_render_rd.cpp
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@@ -34,6 +34,7 @@
#include "core/math/geometry_2d.h"
#include "core/math/math_defs.h"
#include "core/math/math_funcs.h"
#include "core/math/transform_interpolator.h"
#include "renderer_compositor_rd.h"
#include "servers/rendering/renderer_rd/storage_rd/material_storage.h"
#include "servers/rendering/renderer_rd/storage_rd/particles_storage.h"
@@ -427,7 +428,7 @@ void RendererCanvasRenderRD::_render_item(RD::DrawListID p_draw_list, RID p_rend
Transform2D base_transform = p_canvas_transform_inverse * p_item->final_transform;
if (p_offset.x || p_offset.y) {
base_transform *= Transform2D(0, p_offset / p_item->xform.get_scale());
base_transform *= Transform2D(0, p_offset / p_item->xform_curr.get_scale()); // TODO: Interpolate or explain why not needed.
}
Transform2D draw_transform;
@@ -1366,7 +1367,15 @@ void RendererCanvasRenderRD::canvas_render_items(RID p_to_render_target, Item *p
ERR_CONTINUE(!clight);
}
Vector2 canvas_light_pos = p_canvas_transform.xform(l->xform.get_origin()); //convert light position to canvas coordinates, as all computation is done in canvas coords to avoid precision loss
Transform2D final_xform;
if (!RSG::canvas->_interpolation_data.interpolation_enabled || !l->interpolated) {
final_xform = l->xform_curr;
} else {
real_t f = Engine::get_singleton()->get_physics_interpolation_fraction();
TransformInterpolator::interpolate_transform_2d(l->xform_prev, l->xform_curr, final_xform, f);
}
// Convert light position to canvas coordinates, as all computation is done in canvas coordinates to avoid precision loss.
Vector2 canvas_light_pos = p_canvas_transform.xform(final_xform.get_origin());
state.light_uniforms[index].position[0] = canvas_light_pos.x;
state.light_uniforms[index].position[1] = canvas_light_pos.y;