Draw 3d brush cursor procedurally

armorlab/sources/render_path_paint.ts

@@ -189,8 +189,6 @@ function render_path_paint_draw_cursor(mx: f32, my: f32, radius: f32, tint_r: f3
 
 	render_path_set_target("");
 	g4_set_pipeline(pipes_cursor);
-	let img: image_t = resource_get("cursor.k");
-	g4_set_tex(pipes_cursor_tex, img);
 	let gbuffer0: render_target_t = map_get(render_path_render_targets, "gbuffer0");
 	g4_set_tex_depth(pipes_cursor_gbufferd, gbuffer0._image);
 	g4_set_float2(pipes_cursor_mouse, mx, my);

armorpaint/sources/render_path_paint.ts

@@ -488,10 +488,6 @@ function render_path_paint_draw_cursor(mx: f32, my: f32, radius: f32, tint_r: f3
 
 	render_path_set_target("");
 	g4_set_pipeline(pipes_cursor);
-	let decal: bool = context_is_decal();
-	let decal_mask: bool = context_is_decal_mask();
-	let img: image_t = (decal && !decal_mask) ? context_raw.decal_image : resource_get("cursor.k");
-	g4_set_tex(pipes_cursor_tex, img);
 	let rt: render_target_t = map_get(render_path_render_targets, "gbuffer0");
 	let gbuffer0: image_t = rt._image;
 	g4_set_tex_depth(pipes_cursor_gbufferd, gbuffer0);

base/shaders/cursor.frag.glsl

@@ -1,15 +1,15 @@
 #version 450
 
 uniform vec3 tint;
-#ifdef SPIRV
-uniform sampler2D gbufferD; // vulkan unit align
-#endif
-uniform sampler2D tex;
 
 in vec2 tex_coord;
 out vec4 frag_color;
 
 void main() {
-	vec4 col = texture(tex, tex_coord);
-	frag_color = vec4((col.rgb / col.a) * tint, col.a);
+	float radius = 0.45;
+	float thickness = 0.03;
+	float dist = distance(tex_coord, vec2(0.5, 0.5));
+	float ring = smoothstep(radius - thickness, radius, dist) -
+				 smoothstep(radius, radius + thickness, dist);
+	frag_color = vec4(tint, min(ring, 0.6));
 }

base/shaders/cursor.vert.glsl

@@ -7,10 +7,6 @@ uniform vec2 tex_step;
 uniform float radius;
 uniform vec3 camera_right;
 uniform sampler2D gbufferD;
-#ifdef HLSL
-// direct3d12 unit align
-uniform sampler2D texa;
-#endif
 
 #ifdef HLSL
 in vec4 pos;
@@ -21,8 +17,7 @@ out vec2 tex_coord;
 
 vec3 get_pos(vec2 uv) {
 #ifdef HLSL
-	float keep = textureLod(texa, vec2(0.0, 0.0), 0.0).r; // direct3d12 unit align
-	float keep2 = pos.x + nor.x;
+	float keep = pos.x + nor.x;
 #endif
 
 #ifdef GLSL

base/sources/pipes.ts

@@ -47,7 +47,6 @@ let pipes_cursor_tex_step: kinc_const_loc_t;
 let pipes_cursor_radius: kinc_const_loc_t;
 let pipes_cursor_camera_right: kinc_const_loc_t;
 let pipes_cursor_tint: kinc_const_loc_t;
-let pipes_cursor_tex: kinc_tex_unit_t;
 let pipes_cursor_gbufferd: kinc_tex_unit_t;
 
 function _pipes_make_merge(red: bool, green: bool, blue: bool, alpha: bool): pipeline_t {
@@ -287,6 +286,5 @@ function pipes_init() {
 		pipes_cursor_camera_right = g4_pipeline_get_const_loc(pipes_cursor, "camera_right");
 		pipes_cursor_tint = g4_pipeline_get_const_loc(pipes_cursor, "tint");
 		pipes_cursor_gbufferd = g4_pipeline_get_tex_unit(pipes_cursor, "gbufferD");
-		pipes_cursor_tex = g4_pipeline_get_tex_unit(pipes_cursor, "tex");
 	}
 }

base/sources/ui_base.ts

@@ -1364,7 +1364,7 @@ function ui_base_render_cursor() {
 	}
 
 	let cursor_img: image_t = resource_get("cursor.k");
-	let psize: i32 = math_floor(cursor_img.width * (context_raw.brush_radius * context_raw.brush_nodes_radius) * ui_SCALE(ui_base_ui));
+	let psize: i32 = math_floor(182 * (context_raw.brush_radius * context_raw.brush_nodes_radius) * ui_SCALE(ui_base_ui));
 
 	// Clone source cursor
 	if (context_raw.tool == workspace_tool_t.CLONE && !keyboard_down("alt") && (mouse_down() || pen_down())) {