Differential D3505 Diff 11531 source/blender/draw/engines/lanpr/shaders/lanpr_dpix_preview_geom.glsl

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source/blender/draw/engines/lanpr/shaders/lanpr_dpix_preview_geom.glsl

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				layout(points) in;
				layout(triangle_strip, max_vertices = 6) out;

				uniform sampler2D vert0_tex;//L
				uniform sampler2D vert1_tex;//R
				uniform sampler2D edge_mask_tex;

				//uniform float uValue0; // buffer_w
				uniform vec4 viewport; // viewport
				uniform float depth_offset;

				// these are for depth related thickness control;
				uniform float line_thickness;
				uniform float depth_width_influence;
				uniform float depth_width_curve;
				uniform float depth_alpha_influence;
				uniform float depth_alpha_curve;
				uniform float z_near;
				uniform float z_far;

				uniform vec4 color;
				uniform vec4 background_color;

				uniform vec4 crease_color;
				uniform vec4 material_color;
				uniform vec4 edge_mark_color;
				uniform vec4 intersection_color;

				uniform float line_thickness_crease;
				uniform float line_thickness_material;
				uniform float line_thickness_edge_mark;
				uniform float line_thickness_intersection;

				float use_thickness = line_thickness;

				out vec4 out_color;

				vec4 use_color = color;

				float get_linear_depth(float z){
				float ze = 2.0 * z_near * z_far / (z_far + z_near - z * (z_far - z_near));
				return (ze - z_near) / (z_far - z_near);
				}

				float curve_01(float z, float factor){
				return pow(z, 1 - factor); // factor is -inf~1-eps
				}

				vec4 apply_scale(vec4 center, vec4 a){
				float lz = get_linear_depth(center.z);
				float depth_factor = mix(0, curve_01(lz, depth_width_curve), depth_width_influence);

				return mix(a, center, depth_factor);
				}

				void emit_alpha_pre_mul(vec4 a, int is_crease, float crease_fading){
				float lz = get_linear_depth(a.z);
				float alpha_factor = mix(0, curve_01(lz, depth_alpha_curve), depth_alpha_influence);
				float alpha_crease_fading = alpha_factor;
				if (is_crease > 0) alpha_crease_fading = mix(alpha_factor, 1, crease_fading * 2); // fading=0.5 -> fade all
				out_color = mix(use_color, background_color, alpha_crease_fading);
				}

				void draw_line(vec4 p1, vec4 p2, int is_crease){

				vec4 Line = p2 - p1;
				vec4 Normal = normalize(vec4(-Line.y, Line.x, 0, 0));

				vec4 a, b, c, d;

				vec4 offset = Normal * use_thickness * 0.001;
				a = p1 + offset;
				b = p1 - offset;
				c = p2 + offset;
				d = p2 - offset;

				a = apply_scale(p1, a);
				b = apply_scale(p1, b);
				c = apply_scale(p2, c);
				d = apply_scale(p2, d);

				gl_Position = vec4(a.xy, a.z - depth_offset, 1); emit_alpha_pre_mul(a, is_crease, p2.w); EmitVertex();
				gl_Position = vec4(b.xy, b.z - depth_offset, 1); emit_alpha_pre_mul(b, is_crease, p2.w); EmitVertex();
				gl_Position = vec4(c.xy, c.z - depth_offset, 1); emit_alpha_pre_mul(c, is_crease, p2.w); EmitVertex();

				gl_Position = vec4(b.xy, b.z - depth_offset, 1); emit_alpha_pre_mul(b, is_crease, p2.w); EmitVertex();
				gl_Position = vec4(c.xy, c.z - depth_offset, 1); emit_alpha_pre_mul(c, is_crease, p2.w); EmitVertex();
				gl_Position = vec4(d.xy, d.z - depth_offset, 1); emit_alpha_pre_mul(d, is_crease, p2.w); EmitVertex();

				EndPrimitive();
				}

				void main() {
				vec4 p1 = texelFetch(vert0_tex, ivec2(gl_in[0].gl_Position.xy), 0);
				vec4 p2 = texelFetch(vert1_tex, ivec2(gl_in[0].gl_Position.xy), 0);

				if (p1.w == 0 && p2.w == 0) return;

				vec4 edge_mask = texelFetch(edge_mask_tex, ivec2(gl_in[0].gl_Position.xy), 0);

				int is_crease = 0;

				if (edge_mask.g > 0) { use_color = edge_mark_color; use_thickness = line_thickness * line_thickness_edge_mark; }
				else if (edge_mask.r > 0) { use_color = material_color; use_thickness = line_thickness * line_thickness_material; }
				else if (edge_mask.b > 0) { use_color = intersection_color; use_thickness = line_thickness * line_thickness_intersection; }
				else if (p1.w != p2.w) { use_color = crease_color; use_thickness = line_thickness * line_thickness_crease; is_crease = 1; }

				draw_line(p1, p2, is_crease);
				}
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