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Implement signed distance fields for 2D shaders

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This commit is contained in:
reduz
2020-11-26 09:50:21 -03:00
parent 4e5625ce30
commit 1bcf3c305b
26 changed files with 1028 additions and 89 deletions
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46
servers/rendering/rasterizer_rd/rasterizer_canvas_rd.h
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@@ -161,12 +161,6 @@ class RasterizerCanvasRD : public RasterizerCanvas {
BLEND_MODE_DISABLED,
};
enum LightMode {
LIGHT_MODE_NORMAL,
LIGHT_MODE_UNSHADED,
LIGHT_MODE_LIGHT_ONLY
};
bool valid;
RID version;
PipelineVariants pipeline_variants;
@@ -181,7 +175,8 @@ class RasterizerCanvasRD : public RasterizerCanvas {
String code;
Map<StringName, RID> default_texture_params;
bool uses_screen_texture;
bool uses_screen_texture = false;
bool uses_sdf = false;
virtual void set_code(const String &p_Code);
virtual void set_default_texture_param(const StringName &p_name, RID p_texture);
@@ -284,11 +279,19 @@ class RasterizerCanvasRD : public RasterizerCanvas {
struct OccluderPolygon {
RS::CanvasOccluderPolygonCullMode cull_mode;
int point_count;
int line_point_count;
RID vertex_buffer;
RID vertex_array;
RID index_buffer;
RID index_array;
int sdf_point_count;
int sdf_index_count;
RID sdf_vertex_buffer;
RID sdf_vertex_array;
RID sdf_index_buffer;
RID sdf_index_array;
bool sdf_is_lines;
};
struct LightUniform {
@@ -310,12 +313,25 @@ class RasterizerCanvasRD : public RasterizerCanvas {
RID_Owner<OccluderPolygon> occluder_polygon_owner;
enum ShadowRenderMode {
SHADOW_RENDER_MODE_SHADOW,
SHADOW_RENDER_MODE_SDF,
};
enum {
SHADOW_RENDER_SDF_TRIANGLES,
SHADOW_RENDER_SDF_LINES,
};
struct {
CanvasOcclusionShaderRD shader;
RID shader_version;
RID render_pipelines[3];
RID sdf_render_pipelines[2];
RD::VertexFormatID vertex_format;
RD::VertexFormatID sdf_vertex_format;
RD::FramebufferFormatID framebuffer_format;
RD::FramebufferFormatID sdf_framebuffer_format;
} shadow_render;
/***************/
@@ -336,8 +352,14 @@ class RasterizerCanvasRD : public RasterizerCanvas {
float time;
uint32_t use_pixel_snap;
float sdf_to_tex[4];
float sdf_to_screen[2];
float screen_to_sdf[2];
uint32_t directional_light_count;
uint32_t pad[3];
float tex_to_sdf;
uint32_t pad1;
uint32_t pad2;
};
LightUniform *light_uniforms;
@@ -423,11 +445,13 @@ public:
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);
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);
virtual void render_sdf(RID p_render_target, LightOccluderInstance *p_occluders);
RID occluder_polygon_create();
void occluder_polygon_set_shape_as_lines(RID p_occluder, const Vector<Vector2> &p_lines);
void occluder_polygon_set_shape(RID p_occluder, const Vector<Vector2> &p_points, bool p_closed);
void occluder_polygon_set_cull_mode(RID p_occluder, RS::CanvasOccluderPolygonCullMode p_mode);
void canvas_render_items(RID p_to_render_target, Item *p_item_list, const Color &p_modulate, Light *p_light_list, Light *p_directional_light_list, const Transform2D &p_canvas_transform, RS::CanvasItemTextureFilter p_default_filter, RS::CanvasItemTextureRepeat p_default_repeat, bool p_snap_2d_vertices_to_pixel);
void canvas_render_items(RID p_to_render_target, Item *p_item_list, const Color &p_modulate, Light *p_light_list, Light *p_directional_light_list, const Transform2D &p_canvas_transform, RS::CanvasItemTextureFilter p_default_filter, RS::CanvasItemTextureRepeat p_default_repeat, bool p_snap_2d_vertices_to_pixel, bool &r_sdf_used);
void canvas_debug_viewport_shadows(Light *p_lights_with_shadow) {}