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Optimize PointLight2D shadow rendering by reducing draw calls and RD state changes.

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This dramatically reduces the CPU time spent on rendering shadows for PointLight2Ds
This commit is contained in:
clayjohn
2024-12-11 23:32:19 -08:00
parent 38775731e8
commit 7c61252dd7
8 changed files with 224 additions and 82 deletions
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25
servers/rendering/renderer_rd/renderer_canvas_render_rd.h
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@@ -268,12 +268,23 @@ class RendererCanvasRenderRD : public RendererCanvasRender {
RID_Owner<CanvasLight> canvas_light_owner;
struct PositionalShadowRenderPushConstant {
float modelview[8];
float rotation[4];
float direction[2];
float z_far;
uint32_t pad;
float z_near;
uint32_t cull_mode;
float pad2[2];
};
struct ShadowRenderPushConstant {
float projection[16];
float modelview[8];
float direction[2];
float z_far;
float pad;
uint32_t cull_mode;
};
struct OccluderPolygon {
@@ -313,7 +324,8 @@ class RendererCanvasRenderRD : public RendererCanvasRender {
RID_Owner<OccluderPolygon> occluder_polygon_owner;
enum ShadowRenderMode {
SHADOW_RENDER_MODE_SHADOW,
SHADOW_RENDER_MODE_DIRECTIONAL_SHADOW,
SHADOW_RENDER_MODE_POSITIONAL_SHADOW,
SHADOW_RENDER_MODE_SDF,
};
@@ -325,7 +337,7 @@ class RendererCanvasRenderRD : public RendererCanvasRender {
struct {
CanvasOcclusionShaderRD shader;
RID shader_version;
RID render_pipelines[3];
RID render_pipelines[2];
RID sdf_render_pipelines[2];
RD::VertexFormatID vertex_format;
RD::VertexFormatID sdf_vertex_format;
@@ -564,6 +576,10 @@ class RendererCanvasRenderRD : public RendererCanvasRender {
RID shadow_fb;
int shadow_texture_size = 2048;
RID shadow_occluder_buffer;
uint32_t shadow_occluder_buffer_size;
RID shadow_ocluder_uniform_set;
RID default_transforms_uniform_set;
uint32_t max_lights_per_render;
@@ -617,6 +633,7 @@ class RendererCanvasRenderRD : public RendererCanvasRender {
_FORCE_INLINE_ void _update_transform_to_mat4(const Transform3D &p_transform, float *p_mat4);
void _update_shadow_atlas();
void _update_occluder_buffer(uint32_t p_size);
public:
PolygonID request_polygon(const Vector<int> &p_indices, const Vector<Point2> &p_points, const Vector<Color> &p_colors, const Vector<Point2> &p_uvs = Vector<Point2>(), const Vector<int> &p_bones = Vector<int>(), const Vector<float> &p_weights = Vector<float>()) override;
@@ -625,7 +642,7 @@ public:
RID light_create() override;
void light_set_texture(RID p_rid, RID p_texture) override;
void light_set_use_shadow(RID p_rid, bool p_enable) override;
void light_update_shadow(RID p_rid, int p_shadow_index, const Transform2D &p_light_xform, int p_light_mask, float p_near, float p_far, LightOccluderInstance *p_occluders) override;
void light_update_shadow(RID p_rid, int p_shadow_index, const Transform2D &p_light_xform, int p_light_mask, float p_near, float p_far, LightOccluderInstance *p_occluders, const Rect2 &p_light_rect) override;
void light_update_directional_shadow(RID p_rid, int p_shadow_index, const Transform2D &p_light_xform, int p_light_mask, float p_cull_distance, const Rect2 &p_clip_rect, LightOccluderInstance *p_occluders) override;
virtual void render_sdf(RID p_render_target, LightOccluderInstance *p_occluders) override;