Merge branch 'main' into feature/h2c_support_clean

resources/images/advanced_option3.svg

@@ -1,3 +1,3 @@
 <svg width="19" height="20" viewBox="0 0 19 20" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path d="M12.9742 9.65669C13.2353 9.91782 13.2353 10.3401 12.9742 10.5984L7.64038 15.935C7.37924 16.1961 6.95698 16.1961 6.69863 15.935C6.44027 15.6739 6.43749 15.2516 6.69863 14.9933L11.5602 10.1317L6.69585 5.26742C6.43472 5.00628 6.43472 4.58403 6.69585 4.32567C6.95698 4.06731 7.37924 4.06454 7.6376 4.32567L12.9742 9.65669Z" fill="#009688"/>
+<path d="M12.9742 9.65669C13.2353 9.91782 13.2353 10.3401 12.9742 10.5984L7.64038 15.935C7.37924 16.1961 6.95698 16.1961 6.69863 15.935C6.44027 15.6739 6.43749 15.2516 6.69863 14.9933L11.5602 10.1317L6.69585 5.26742C6.43472 5.00628 6.43472 4.58403 6.69585 4.32567C6.95698 4.06731 7.37924 4.06454 7.6376 4.32567L12.9742 9.65669Z" fill="#949494"/>
 </svg>

resources/images/advanced_option4.svg

@@ -1,3 +1,3 @@
 <svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path d="M10.5084 13.1962C10.2472 13.4574 9.82496 13.4574 9.5666 13.1962L4.23003 7.86242C3.9689 7.60129 3.9689 7.17903 4.23003 6.92068C4.49116 6.66232 4.91342 6.65954 5.17178 6.92068L10.0333 11.7822L14.8976 6.9179C15.1588 6.65676 15.581 6.65676 15.8394 6.9179C16.0977 7.17903 16.1005 7.60129 15.8394 7.85965L10.5084 13.1962Z" fill="#009688"/>
+<path d="M10.5084 13.1962C10.2472 13.4574 9.82496 13.4574 9.5666 13.1962L4.23003 7.86242C3.9689 7.60129 3.9689 7.17903 4.23003 6.92068C4.49116 6.66232 4.91342 6.65954 5.17178 6.92068L10.0333 11.7822L14.8976 6.9179C15.1588 6.65676 15.581 6.65676 15.8394 6.9179C16.0977 7.17903 16.1005 7.60129 15.8394 7.85965L10.5084 13.1962Z" fill="#949494"/>
 </svg>

resources/images/param_z_contouring.svg

@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?><svg id="a" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 18 18"><line x1="2.5" y1="14.5" x2="16.5" y2="14.5" style="fill:none; stroke:#949494; stroke-linecap:square; stroke-miterlimit:10;"/><line x1="2.5" y1="16.5" x2="16.5" y2="16.5" style="fill:none; stroke:#949494; stroke-linecap:square; stroke-miterlimit:10;"/><line x1="16.5" y1="12.5" x2="2.67" y2="12.5" style="fill:none; stroke:#949494; stroke-linecap:square; stroke-miterlimit:10;"/><line x1="16.5" y1="10.5" x2="3.19" y2="10.5" style="fill:none; stroke:#949494; stroke-linecap:square; stroke-miterlimit:10;"/><line x1="4.11" y1="8.5" x2="16.5" y2="8.5" style="fill:none; stroke:#949494; stroke-linecap:square; stroke-miterlimit:10;"/><line x1="16.5" y1="6.5" x2="5.56" y2="6.5" style="fill:none; stroke:#949494; stroke-linecap:square; stroke-miterlimit:10;"/><line x1="7.87" y1="4.5" x2="16.5" y2="4.5" style="fill:none; stroke:#949494; stroke-linecap:square; stroke-miterlimit:10;"/><line x1="12.92" y1="2.5" x2="16.5" y2="2.5" style="fill:none; stroke:#949494; stroke-linecap:square; stroke-miterlimit:10;"/><path d="M.5,16.5v-2C.5,6.77,6.77.5,14.5.5h2" style="fill:none; stroke:#009688; stroke-linecap:square; stroke-miterlimit:10;"/></svg>

resources/shaders/110/gouraud.fs

@@ -55,6 +55,15 @@ const float ONE_OVER_EPSILON = 1e4;
 uniform float z_far;
 uniform float z_near;
 
+// Depth-based shadow map (object-on-object and self shadows). shadow_intensity == 0 disables it.
+uniform sampler2D shadow_map;
+uniform mat4 shadow_light_vp;
+uniform float shadow_intensity;
+uniform float shadow_map_texel;
+
+// LIGHT_TOP_DIR in eye space (matches the diffuse light used for shading in gouraud.vs).
+const vec3 SHADOW_LIGHT_DIR = vec3(-0.4574957, 0.4574957, 0.7624929);
+
 varying vec3 clipping_planes_dots;
 varying float color_clip_plane_dot;
 
@@ -130,6 +139,35 @@ float DetectSilho(vec2 fragCoord)
         );
 }
 
+// Returns a lighting multiplier in [1 - shadow_intensity, 1]: < 1 where the fragment is
+// occluded from the light in the shadow map. 3x3 PCF softens the edges.
+float shadow_shade()
+{
+    if (shadow_intensity <= 0.0)
+        return 1.0;
+
+    vec4 lp = shadow_light_vp * world_pos;
+    vec3 proj = lp.xyz / lp.w;
+    proj = proj * 0.5 + 0.5;
+    if (proj.z > 1.0)
+        return 1.0;
+
+    // Slope-scaled depth bias: larger where the surface grazes / faces away from the light. This
+    // suppresses self-shadow acne without discarding real shadows cast by other objects onto
+    // back-facing surfaces (e.g. the shaded back/tip of a cone sitting inside a larger shadow).
+    float NdotL = dot(normalize(eye_normal), SHADOW_LIGHT_DIR);
+    float bias = mix(0.0004, 0.004, clamp(1.0 - NdotL, 0.0, 1.0));
+    // 5x5 PCF: softens shadow edges into a smooth penumbra and blurs residual facet acne.
+    float sum = 0.0;
+    for (int x = -2; x <= 2; ++x) {
+        for (int y = -2; y <= 2; ++y) {
+            float closest = texture2D(shadow_map, proj.xy + vec2(float(x), float(y)) * shadow_map_texel).r;
+            sum += (proj.z - bias > closest) ? 1.0 : 0.0;
+        }
+    }
+    return 1.0 - shadow_intensity * (sum / 25.0);
+}
+
 void main()
 {
     if (any(lessThan(clipping_planes_dots, ZERO)))
@@ -180,10 +218,11 @@ void main()
         bool is_out_printable_height = (all(greaterThan(eph_check_min, vec3(1.0))) && all(lessThan(eph_check_max, vec3(1.0))));
         color.rgb = is_out_printable_height ? mix(color.rgb, ZERO, 0.7) : color.rgb;
     }
+    float shade = shadow_shade();
 
     //BBS: add outline_color
     if (is_outline) {
-        color = vec4(vec3(intensity.y) + color.rgb * intensity.x, color.a);
+        color = vec4((vec3(intensity.y) + color.rgb * intensity.x) * shade, color.a);
         vec2 fragCoord = gl_FragCoord.xy;
         float s = DetectSilho(fragCoord);
         // Makes silhouettes thicker.
@@ -191,13 +230,13 @@ void main()
         {
            s = max(s, DetectSilho(fragCoord.xy + vec2(i, 0)));
            s = max(s, DetectSilho(fragCoord.xy + vec2(0, i)));
-        }   
+        }
         gl_FragColor = vec4(mix(color.rgb, getBackfaceColor(color.rgb), s), color.a);
     }
 #ifdef ENABLE_ENVIRONMENT_MAP
     else if (use_environment_tex)
-        gl_FragColor = vec4(0.45 * texture(environment_tex, normalize(eye_normal).xy * 0.5 + 0.5).xyz + 0.8 * color.rgb * intensity.x, color.a);
+        gl_FragColor = vec4((0.45 * texture(environment_tex, normalize(eye_normal).xy * 0.5 + 0.5).xyz + 0.8 * color.rgb * intensity.x) * shade, color.a);
 #endif
     else
-        gl_FragColor = vec4(vec3(intensity.y) + color.rgb * intensity.x, color.a);
+        gl_FragColor = vec4((vec3(intensity.y) + color.rgb * intensity.x) * shade, color.a);
 }

resources/shaders/110/phong.fs

@@ -65,6 +65,12 @@ uniform float z_far;
 uniform float z_near;
 uniform bool enable_ssao;
 
+// Depth-based shadow map (object-on-object and self shadows). shadow_intensity == 0 disables it.
+uniform sampler2D shadow_map;
+uniform mat4 shadow_light_vp;
+uniform float shadow_intensity;
+uniform float shadow_map_texel;
+
 varying vec3 clipping_planes_dots;
 varying float color_clip_plane_dot;
 
@@ -167,10 +173,39 @@ vec3 compute_window_reflection(vec3 normal, vec3 view_dir)
     
     float intensity = window_light * bars * (0.15 + 0.15 * fresnel) * facing;
     intensity = clamp(intensity, 0.0, 0.25);
-    
+
     return vec3(intensity);
 }
 
+// Returns a lighting multiplier in [1 - shadow_intensity, 1]: < 1 where the fragment is
+// occluded from the light in the shadow map. 3x3 PCF softens the edges.
+float shadow_shade()
+{
+    if (shadow_intensity <= 0.0)
+        return 1.0;
+
+    vec4 lp = shadow_light_vp * world_pos;
+    vec3 proj = lp.xyz / lp.w;
+    proj = proj * 0.5 + 0.5;
+    if (proj.z > 1.0)
+        return 1.0;
+
+    // Slope-scaled depth bias: larger where the surface grazes / faces away from the light. This
+    // suppresses self-shadow acne without discarding real shadows cast by other objects onto
+    // back-facing surfaces (e.g. the shaded back/tip of a cone sitting inside a larger shadow).
+    float NdotL = dot(normalize(eye_normal), LIGHT_TOP_DIR);
+    float bias = mix(0.0004, 0.004, clamp(1.0 - NdotL, 0.0, 1.0));
+    // 5x5 PCF: softens shadow edges into a smooth penumbra and blurs residual facet acne.
+    float sum = 0.0;
+    for (int x = -2; x <= 2; ++x) {
+        for (int y = -2; y <= 2; ++y) {
+            float closest = texture2D(shadow_map, proj.xy + vec2(float(x), float(y)) * shadow_map_texel).r;
+            sum += (proj.z - bias > closest) ? 1.0 : 0.0;
+        }
+    }
+    return 1.0 - shadow_intensity * (sum / 25.0);
+}
+
 void main()
 {
     if (any(lessThan(clipping_planes_dots, ZERO)))
@@ -226,8 +261,10 @@ void main()
 
     // SSAO is applied in post-process pass. Keep base lighting unchanged here.
 
+    float shade = shadow_shade();
+
     if (is_outline) {
-        vec3 shaded_rgb = (vec3(specular) + window_reflection + color.rgb * diffuse) * PHONG_BRIGHTNESS;
+        vec3 shaded_rgb = (vec3(specular) + window_reflection + color.rgb * diffuse) * PHONG_BRIGHTNESS * shade;
         vec4 shaded_color = vec4(clamp(shaded_rgb, vec3(0.0), vec3(1.0)), color.a);
         vec2 fragCoord = gl_FragCoord.xy;
         float s = DetectSilho(fragCoord);
@@ -240,8 +277,8 @@ void main()
     }
 #ifdef ENABLE_ENVIRONMENT_MAP
     else if (use_environment_tex)
-        gl_FragColor = vec4(clamp((0.45 * texture2D(environment_tex, normalize(eye_normal).xy * 0.5 + 0.5).xyz + window_reflection + 0.8 * color.rgb * diffuse) * PHONG_BRIGHTNESS, vec3(0.0), vec3(1.0)), color.a);
+        gl_FragColor = vec4(clamp((0.45 * texture2D(environment_tex, normalize(eye_normal).xy * 0.5 + 0.5).xyz + window_reflection + 0.8 * color.rgb * diffuse) * PHONG_BRIGHTNESS * shade, vec3(0.0), vec3(1.0)), color.a);
 #endif
     else
-        gl_FragColor = vec4(clamp((vec3(specular) + window_reflection + color.rgb * diffuse) * PHONG_BRIGHTNESS, vec3(0.0), vec3(1.0)), color.a);
+        gl_FragColor = vec4(clamp((vec3(specular) + window_reflection + color.rgb * diffuse) * PHONG_BRIGHTNESS * shade, vec3(0.0), vec3(1.0)), color.a);
 }

resources/shaders/110/printbed_shadow.fs

@@ -0,0 +1,40 @@
+#version 110
+
+// Draws the build-plate as a receiver of the same depth shadow map used for object/self shadows,
+// so the plate, objects, and self-shadows all come from one unified technique.
+uniform sampler2D shadow_map;
+uniform mat4 shadow_light_vp;
+uniform float shadow_intensity;
+uniform float shadow_map_texel;
+
+varying vec4 world_pos;
+
+// Fraction of the 5x5 PCF kernel occluded from the light. Matches the object shadow shader.
+float shadow_occlusion()
+{
+    vec4 lp = shadow_light_vp * world_pos;
+    vec3 proj = lp.xyz / lp.w;
+    proj = proj * 0.5 + 0.5;
+    if (proj.z > 1.0)
+        return 0.0;
+
+    // The plate is a pure receiver (never rendered into the shadow map), so a tiny constant
+    // bias for numerical safety is enough here.
+    float bias = 0.0004;
+    float sum = 0.0;
+    for (int x = -2; x <= 2; ++x) {
+        for (int y = -2; y <= 2; ++y) {
+            float closest = texture2D(shadow_map, proj.xy + vec2(float(x), float(y)) * shadow_map_texel).r;
+            sum += (proj.z - bias > closest) ? 1.0 : 0.0;
+        }
+    }
+    return sum / 25.0;
+}
+
+void main()
+{
+    float occ = shadow_occlusion();
+    if (occ <= 0.0)
+        discard;
+    gl_FragColor = vec4(0.0, 0.0, 0.0, shadow_intensity * occ);
+}

resources/shaders/110/printbed_shadow.vs

@@ -0,0 +1,16 @@
+#version 110
+
+uniform mat4 view_model_matrix;
+uniform mat4 projection_matrix;
+
+attribute vec3 v_position;
+
+// The plate mask quad is authored directly in world coordinates (z = 0 plane),
+// so v_position is already the world position of the fragment.
+varying vec4 world_pos;
+
+void main()
+{
+    world_pos = vec4(v_position, 1.0);
+    gl_Position = projection_matrix * view_model_matrix * vec4(v_position, 1.0);
+}

resources/shaders/140/gouraud.fs

@@ -54,6 +54,15 @@ const float ONE_OVER_EPSILON = 1e4;
 uniform float z_far;
 uniform float z_near;
 
+// Depth-based shadow map (object-on-object and self shadows). shadow_intensity == 0 disables it.
+uniform sampler2D shadow_map;
+uniform mat4 shadow_light_vp;
+uniform float shadow_intensity;
+uniform float shadow_map_texel;
+
+// LIGHT_TOP_DIR in eye space (matches the diffuse light used for shading in gouraud.vs).
+const vec3 SHADOW_LIGHT_DIR = vec3(-0.4574957, 0.4574957, 0.7624929);
+
 in vec3 clipping_planes_dots;
 in float color_clip_plane_dot;
 
@@ -129,6 +138,35 @@ float DetectSilho(vec2 fragCoord)
         );
 }
 
+// Returns a lighting multiplier in [1 - shadow_intensity, 1]: < 1 where the fragment is
+// occluded from the light in the shadow map. 3x3 PCF softens the edges.
+float shadow_shade()
+{
+    if (shadow_intensity <= 0.0)
+        return 1.0;
+
+    vec4 lp = shadow_light_vp * world_pos;
+    vec3 proj = lp.xyz / lp.w;
+    proj = proj * 0.5 + 0.5;
+    if (proj.z > 1.0)
+        return 1.0;
+
+    // Slope-scaled depth bias: larger where the surface grazes / faces away from the light. This
+    // suppresses self-shadow acne without discarding real shadows cast by other objects onto
+    // back-facing surfaces (e.g. the shaded back/tip of a cone sitting inside a larger shadow).
+    float NdotL = dot(normalize(eye_normal), SHADOW_LIGHT_DIR);
+    float bias = mix(0.0004, 0.004, clamp(1.0 - NdotL, 0.0, 1.0));
+    // 5x5 PCF: softens shadow edges into a smooth penumbra and blurs residual facet acne.
+    float sum = 0.0;
+    for (int x = -2; x <= 2; ++x) {
+        for (int y = -2; y <= 2; ++y) {
+            float closest = texture(shadow_map, proj.xy + vec2(float(x), float(y)) * shadow_map_texel).r;
+            sum += (proj.z - bias > closest) ? 1.0 : 0.0;
+        }
+    }
+    return 1.0 - shadow_intensity * (sum / 25.0);
+}
+
 out vec4 out_color;
 
 void main()
@@ -181,10 +219,11 @@ void main()
         bool is_out_printable_height = (all(greaterThan(eph_check_min, vec3(1.0))) && all(lessThan(eph_check_max, vec3(1.0))));
         color.rgb = is_out_printable_height ? mix(color.rgb, ZERO, 0.7) : color.rgb;
     }
+    float shade = shadow_shade();
 
     //BBS: add outline_color
     if (is_outline) {
-        color = vec4(vec3(intensity.y) + color.rgb * intensity.x, color.a);
+        color = vec4((vec3(intensity.y) + color.rgb * intensity.x) * shade, color.a);
         vec2 fragCoord = gl_FragCoord.xy;
         float s = DetectSilho(fragCoord);
         // Makes silhouettes thicker.
@@ -192,13 +231,13 @@ void main()
         {
            s = max(s, DetectSilho(fragCoord.xy + vec2(i, 0)));
            s = max(s, DetectSilho(fragCoord.xy + vec2(0, i)));
-        }   
+        }
         out_color = vec4(mix(color.rgb, getBackfaceColor(color.rgb), s), color.a);
     }
 #ifdef ENABLE_ENVIRONMENT_MAP
     else if (use_environment_tex)
-        out_color = vec4(0.45 * texture(environment_tex, normalize(eye_normal).xy * 0.5 + 0.5).xyz + 0.8 * color.rgb * intensity.x, color.a);
+        out_color = vec4((0.45 * texture(environment_tex, normalize(eye_normal).xy * 0.5 + 0.5).xyz + 0.8 * color.rgb * intensity.x) * shade, color.a);
 #endif
     else
-        out_color = vec4(vec3(intensity.y) + color.rgb * intensity.x, color.a);
+        out_color = vec4((vec3(intensity.y) + color.rgb * intensity.x) * shade, color.a);
 }

resources/shaders/140/phong.fs

@@ -65,6 +65,12 @@ uniform float z_far;
 uniform float z_near;
 uniform bool enable_ssao;
 
+// Depth-based shadow map (object-on-object and self shadows). shadow_intensity == 0 disables it.
+uniform sampler2D shadow_map;
+uniform mat4 shadow_light_vp;
+uniform float shadow_intensity;
+uniform float shadow_map_texel;
+
 in vec3 clipping_planes_dots;
 in float color_clip_plane_dot;
 
@@ -170,11 +176,40 @@ vec3 compute_window_reflection(vec3 normal, vec3 view_dir)
     
 
     float intensity = window_light * bars * (0.15 + 0.15 * fresnel) * facing;
-    intensity = clamp(intensity, 0.0, 0.25);  
-    
+    intensity = clamp(intensity, 0.0, 0.25);
+
     return vec3(intensity);
 }
 
+// Returns a lighting multiplier in [1 - shadow_intensity, 1]: < 1 where the fragment is
+// occluded from the light in the shadow map. 3x3 PCF softens the edges.
+float shadow_shade()
+{
+    if (shadow_intensity <= 0.0)
+        return 1.0;
+
+    vec4 lp = shadow_light_vp * world_pos;
+    vec3 proj = lp.xyz / lp.w;
+    proj = proj * 0.5 + 0.5;
+    if (proj.z > 1.0)
+        return 1.0;
+
+    // Slope-scaled depth bias: larger where the surface grazes / faces away from the light. This
+    // suppresses self-shadow acne without discarding real shadows cast by other objects onto
+    // back-facing surfaces (e.g. the shaded back/tip of a cone sitting inside a larger shadow).
+    float NdotL = dot(normalize(eye_normal), LIGHT_TOP_DIR);
+    float bias = mix(0.0004, 0.004, clamp(1.0 - NdotL, 0.0, 1.0));
+    // 5x5 PCF: softens shadow edges into a smooth penumbra and blurs residual facet acne.
+    float sum = 0.0;
+    for (int x = -2; x <= 2; ++x) {
+        for (int y = -2; y <= 2; ++y) {
+            float closest = texture(shadow_map, proj.xy + vec2(float(x), float(y)) * shadow_map_texel).r;
+            sum += (proj.z - bias > closest) ? 1.0 : 0.0;
+        }
+    }
+    return 1.0 - shadow_intensity * (sum / 25.0);
+}
+
 void main()
 {
     if (any(lessThan(clipping_planes_dots, ZERO)))
@@ -230,8 +265,10 @@ void main()
 
     // SSAO is applied in post-process pass. Keep base lighting unchanged here.
 
+    float shade = shadow_shade();
+
     if (is_outline) {
-        vec3 shaded_rgb = (vec3(specular) + window_reflection + color.rgb * diffuse) * PHONG_BRIGHTNESS;
+        vec3 shaded_rgb = (vec3(specular) + window_reflection + color.rgb * diffuse) * PHONG_BRIGHTNESS * shade;
         vec4 shaded_color = vec4(clamp(shaded_rgb, vec3(0.0), vec3(1.0)), color.a);
         vec2 fragCoord = gl_FragCoord.xy;
         float s = DetectSilho(fragCoord);
@@ -244,8 +281,8 @@ void main()
     }
 #ifdef ENABLE_ENVIRONMENT_MAP
     else if (use_environment_tex)
-        out_color = vec4(clamp((0.45 * texture(environment_tex, normalize(eye_normal).xy * 0.5 + 0.5).xyz + window_reflection + 0.8 * color.rgb * diffuse) * PHONG_BRIGHTNESS, vec3(0.0), vec3(1.0)), color.a);
+        out_color = vec4(clamp((0.45 * texture(environment_tex, normalize(eye_normal).xy * 0.5 + 0.5).xyz + window_reflection + 0.8 * color.rgb * diffuse) * PHONG_BRIGHTNESS * shade, vec3(0.0), vec3(1.0)), color.a);
 #endif
     else
-        out_color = vec4(clamp((vec3(specular) + window_reflection + color.rgb * diffuse) * PHONG_BRIGHTNESS, vec3(0.0), vec3(1.0)), color.a);
+        out_color = vec4(clamp((vec3(specular) + window_reflection + color.rgb * diffuse) * PHONG_BRIGHTNESS * shade, vec3(0.0), vec3(1.0)), color.a);
 }

resources/shaders/140/printbed_shadow.fs

@@ -0,0 +1,42 @@
+#version 140
+
+// Draws the build-plate as a receiver of the same depth shadow map used for object/self shadows,
+// so the plate, objects, and self-shadows all come from one unified technique.
+uniform sampler2D shadow_map;
+uniform mat4 shadow_light_vp;
+uniform float shadow_intensity;
+uniform float shadow_map_texel;
+
+in vec4 world_pos;
+
+out vec4 out_color;
+
+// Fraction of the 5x5 PCF kernel occluded from the light. Matches the object shadow shader.
+float shadow_occlusion()
+{
+    vec4 lp = shadow_light_vp * world_pos;
+    vec3 proj = lp.xyz / lp.w;
+    proj = proj * 0.5 + 0.5;
+    if (proj.z > 1.0)
+        return 0.0;
+
+    // The plate is a pure receiver (never rendered into the shadow map), so a tiny constant
+    // bias for numerical safety is enough here.
+    float bias = 0.0004;
+    float sum = 0.0;
+    for (int x = -2; x <= 2; ++x) {
+        for (int y = -2; y <= 2; ++y) {
+            float closest = texture(shadow_map, proj.xy + vec2(float(x), float(y)) * shadow_map_texel).r;
+            sum += (proj.z - bias > closest) ? 1.0 : 0.0;
+        }
+    }
+    return sum / 25.0;
+}
+
+void main()
+{
+    float occ = shadow_occlusion();
+    if (occ <= 0.0)
+        discard;
+    out_color = vec4(0.0, 0.0, 0.0, shadow_intensity * occ);
+}

resources/shaders/140/printbed_shadow.vs

@@ -0,0 +1,16 @@
+#version 140
+
+uniform mat4 view_model_matrix;
+uniform mat4 projection_matrix;
+
+in vec3 v_position;
+
+// The plate mask quad is authored directly in world coordinates (z = 0 plane),
+// so v_position is already the world position of the fragment.
+out vec4 world_pos;
+
+void main()
+{
+    world_pos = vec4(v_position, 1.0);
+    gl_Position = projection_matrix * view_model_matrix * vec4(v_position, 1.0);
+}