paint: sculpt layer fixes

paint/sources/base.c

@@ -2247,7 +2247,7 @@ void ui_base_set_viewport_col(i32 col) {
 void base_update_workspace() {
 	config_init_layout();
 
-	if (g_config->workspace == WORKSPACE_PAINT_3D || g_config->workspace == WORKSPACE_SCULPT) {
+	if (g_config->workspace == WORKSPACE_PAINT_3D) {
 		base_view3d_show  = true;
 		ui_menubar_tab->i = 0;
 		ui_view2d_show    = false;
@@ -2297,7 +2297,8 @@ void base_update_workflow() {
 		ui_node_array_t *nodes = project_materials->buffer[i]->canvas->nodes;
 		for (i32 j = 0; j < nodes->length; ++j) {
 			if (string_equals(nodes->buffer[j]->type, "OUTPUT_MATERIAL_PBR")) {
-				nodes->buffer[j]->inputs->length = g_config->workflow == WORKFLOW_BASE ? 2 : 9;
+				nodes->buffer[j]->inputs->length = g_config->workflow == WORKFLOW_PBR ? 9 : 2;
+				nodes->buffer[j]->inputs->buffer[0]->name = g_config->workflow == WORKFLOW_SCULPT ? tr("Displacement") : tr("Base Color");
 			}
 		}
 	}

paint/sources/enums.h

@@ -74,13 +74,13 @@ typedef enum {
 	WORKSPACE_PAINT_2D = 1,
 	WORKSPACE_NODES    = 2,
 	WORKSPACE_SCRIPT   = 3,
-	WORKSPACE_SCULPT   = 4,
-	WORKSPACE_PLAYER   = 5,
+	WORKSPACE_PLAYER   = 4,
 } workspace_t;
 
 typedef enum {
-	WORKFLOW_PBR  = 0,
-	WORKFLOW_BASE = 1,
+	WORKFLOW_PBR    = 0,
+	WORKFLOW_BASE   = 1,
+	WORKFLOW_SCULPT = 2,
 } workflow_t;
 
 typedef enum {

paint/sources/make_sculpt.c

@@ -78,6 +78,8 @@ node_shader_context_t *sculpt_make_sculpt_run(material_t *data, material_context
 	node_shader_write_vert(kong, "output.tex_coord.y = 1.0 - output.tex_coord.y;");
 	node_shader_write_vert(kong, "output.pos = float4(input.pos.xy, 0.0, 1.0);");
 	node_shader_write_attrib_frag(kong, "var tex_coord: float2 = input.tex_coord;");
+	node_shader_write_attrib_frag(kong, "var sculpt_uv: float2 = tex_coord;");
+
 	node_shader_add_constant(kong, "inp: float4", "_input_brush");
 	node_shader_add_constant(kong, "inplast: float4", "_input_brush_last");
 	node_shader_add_texture(kong, "gbufferD", NULL);
@@ -86,8 +88,8 @@ node_shader_context_t *sculpt_make_sculpt_run(material_t *data, material_context
 	node_shader_add_constant(kong, "brush_opacity: float", "_brush_opacity");
 	node_shader_add_constant(kong, "brush_hardness: float", "_brush_hardness");
 
-	if (g_context->tool == TOOL_TYPE_BRUSH || g_context->tool == TOOL_TYPE_ERASER || g_context->tool == TOOL_TYPE_CLONE ||
-	    g_context->tool == TOOL_TYPE_BLUR || g_context->tool == TOOL_TYPE_SMUDGE || g_context->tool == TOOL_TYPE_PARTICLE || decal) {
+	if (g_context->tool == TOOL_TYPE_BRUSH || g_context->tool == TOOL_TYPE_ERASER || g_context->tool == TOOL_TYPE_CLONE || g_context->tool == TOOL_TYPE_BLUR ||
+	    g_context->tool == TOOL_TYPE_SMUDGE || g_context->tool == TOOL_TYPE_PARTICLE || decal) {
 		node_shader_write_frag(kong, "var dist: float = 0.0;");
 		node_shader_write_frag(kong, "var depth: float = sample_lod(gbufferD, sampler_linear, constants.inp.xy, 0.0).r;");
 		node_shader_add_constant(kong, "invVP: float4x4", "_inv_view_proj_matrix");
@@ -105,8 +107,11 @@ node_shader_context_t *sculpt_make_sculpt_run(material_t *data, material_context
 		node_shader_write_frag(kong, "var winplast: float4 = float4(float2(constants.inplast.x, 1.0 - constants.inplast.y) * 2.0 - 1.0, depthlast, 1.0);");
 		node_shader_write_frag(kong, "winplast = constants.invVP * winplast;");
 		node_shader_write_frag(kong, "winplast.xyz = winplast.xyz / winplast.w;");
-		node_shader_write_frag(kong, "dist = distance(wposition.xyz, winp.xyz);");
-		node_shader_write_frag(kong, "if (dist > constants.brush_radius) { discard; }");
+
+		if (!decal) {
+			node_shader_write_frag(kong, "dist = distance(wposition.xyz, winp.xyz);");
+			node_shader_write_frag(kong, "if (dist > constants.brush_radius) { discard; }");
+		}
 	}
 	else if (g_context->tool == TOOL_TYPE_FILL) {
 		node_shader_write_frag(kong, "var dist: float = 0.0;");
@@ -116,11 +121,41 @@ node_shader_context_t *sculpt_make_sculpt_run(material_t *data, material_context
 		    kong, "var wposition: float3 = (constants.W * texpaint_sculpt_undo[uint2(uint(tex_coord.x * 2048.0), uint(tex_coord.y * 2048.0))]).xyz;");
 	}
 
-	parser_material_parse_height            = true;
-	parser_material_parse_height_as_channel = true;
-	shader_out_t *sout                      = parser_material_parse(g_context->material->canvas, con_paint, kong, matcon);
-	char         *height                    = sout->out_height;
-	node_shader_write_frag(kong, string("var height: float = %s;", height));
+	if (decal) {
+		// Project wposition to screen-space and compute decal tex_coord
+		node_shader_add_constant(kong, "VP: float4x4", "_view_proj_matrix");
+		node_shader_write_attrib_frag(kong, "var decal_ndc: float4 = constants.VP * float4(wposition.xyz, 1.0);");
+		node_shader_write_attrib_frag(kong, "var sp: float3 = decal_ndc.xyz / decal_ndc.w;");
+		node_shader_write_attrib_frag(kong, "sp.x = sp.x * 0.5 + 0.5;");
+		node_shader_write_attrib_frag(kong, "sp.y = sp.y * 0.5 + 0.5;");
+		node_shader_write_attrib_frag(kong, "sp.y = 1.0 - sp.y;");
+		node_shader_add_constant(kong, "aspect_ratio: float", "_aspect_ratio_window");
+		node_shader_add_constant(kong, "decal_mask: float4", "_decal_mask");
+		node_shader_write_attrib_frag(kong, "var uvsp: float2 = sp.xy;");
+		node_shader_write_attrib_frag(kong, "uvsp = uvsp - constants.decal_mask.xy;");
+		node_shader_write_attrib_frag(kong, "uvsp.x *= constants.aspect_ratio;");
+		node_shader_write_attrib_frag(kong, "uvsp = uvsp * (0.21 / (constants.decal_mask.w * 0.9));");
+		f32 angle = g_context->brush_angle + g_context->brush_nodes_angle;
+		if (angle != 0.0) {
+			node_shader_add_constant(kong, "brush_angle: float2", "_brush_angle");
+			node_shader_write_attrib_frag(kong, "uvsp = float2(uvsp.x * constants.brush_angle.x - uvsp.y * constants.brush_angle.y, uvsp.x * "
+			                                    "constants.brush_angle.y + uvsp.y * constants.brush_angle.x);");
+		}
+		node_shader_add_constant(kong, "brush_scale_x: float", "_brush_scale_x");
+		node_shader_write_attrib_frag(kong, "uvsp.x *= constants.brush_scale_x;");
+		node_shader_write_attrib_frag(kong, "uvsp += float2(0.5, 0.5);");
+		node_shader_write_attrib_frag(kong, "if (uvsp.x < 0.0 || uvsp.y < 0.0 || uvsp.x > 1.0 || uvsp.y > 1.0) { discard; }");
+		node_shader_add_constant(kong, "brush_scale: float", "_brush_scale");
+		node_shader_write_attrib_frag(kong, "tex_coord = uvsp * constants.brush_scale;");
+	}
+
+	// parser_material_parse may add vertex elements
+	i32 velen                                = con_paint->data->vertex_elements->length;
+	parser_material_parse_height             = true;
+	parser_material_parse_height_as_channel  = true;
+	shader_out_t *sout                       = parser_material_parse(g_context->material->canvas, con_paint, kong, matcon);
+	con_paint->data->vertex_elements->length = velen;
+	node_shader_write_frag(kong, string("var height: float = %s.r;", sout->out_basecol));
 
 	if (kong->frag_bposition) {
 		kong->frag_bposition = false;
@@ -128,11 +163,12 @@ node_shader_context_t *sculpt_make_sculpt_run(material_t *data, material_context
 	}
 
 	node_shader_write_frag(kong, "var basecol: float3 = float3(1.0, 1.0, 1.0);");
-	node_shader_write_frag(kong, "var opacity: float = 1.0;");
+	node_shader_write_frag(kong, string("var opacity: float = %s;", sout->out_opacity));
 	node_shader_write_frag(kong, "if (opacity == 0.0) { discard; }");
 	node_shader_write_frag(kong, "var str: float = clamp((constants.brush_radius - dist) * constants.brush_hardness * 1.0, 0.0, 1.0) * opacity;");
 	node_shader_add_texture(kong, "texpaint_sculpt_undo", "_texpaint_sculpt_undo");
-	node_shader_write_frag(kong, "var sample_undo: float4 = sample_lod(texpaint_sculpt_undo, sampler_linear, tex_coord, 0.0);");
+	node_shader_write_frag(kong, "var sample_undo: float4 = sample_lod(texpaint_sculpt_undo, sampler_linear, sculpt_uv, 0.0);");
+
 	node_shader_write_frag(kong, "if (sample_undo.r == 0.0 && sample_undo.g == 0.0 && sample_undo.b == 0.0) { discard; }");
 	node_shader_add_function(kong, str_octahedron_wrap);
 	node_shader_add_texture(kong, "gbuffer0_undo", NULL);

paint/sources/project.c

@@ -341,6 +341,7 @@ void project_new(bool reset_layers) {
 	if (in_use)
 		draw_begin(current, false, 0);
 
+	base_update_workflow();
 	project_set_default_envmap();
 	context_init_tool();
 	viewport_reset();

paint/sources/tab_layers.c

@@ -982,7 +982,7 @@ void tab_layers_button_new_sculpt_layer(void *_) {
 
 void tab_layers_button_new_menu() {
 	slot_layer_t *l = g_context->layer;
-	if (g_config->workspace == WORKSPACE_SCULPT) {
+	if (g_config->workflow == WORKFLOW_SCULPT) {
 		if (ui_menu_button(tr("Sculpt Layer"), "", ICON_PAINT)) {
 			sys_notify_on_next_frame(&tab_layers_button_new_sculpt_layer, NULL);
 		}

paint/sources/tab_materials.c

@@ -28,6 +28,7 @@ void tab_materials_update_material() {
 	if (decal) {
 		util_render_make_decal_preview();
 	}
+	base_update_workflow();
 }
 
 void tab_materials_draw_slots_duplicate(void *_) {
@@ -103,6 +104,11 @@ void tab_materials_draw_slots_menu() {
 		tab_materials_delete_material(m);
 	}
 
+	if (g_config->experimental && ui_menu_button(tr("Inspect as Script"), "", ICON_SEARCH)) {
+		node_shader_dump_to_script = true;
+		context_select_material(i);
+	}
+
 	ui_handle_t *base_handle = ui_nest(ui_handle(__ID__), m->id);
 	if (base_handle->init) {
 		base_handle->b = m->paint_base;

paint/sources/ui_menubar.c

@@ -784,7 +784,6 @@ void ui_menubar_draw_category_items() {
             4);
 
 		if (g_config->experimental) {
-			any_array_push(modes, tr("Sculpt"));
 			any_array_push(modes, tr("Player"));
 		}
 
@@ -810,6 +809,11 @@ void ui_menubar_draw_category_items() {
 		        tr("Base"),
 		    },
 		    2);
+
+		if (g_config->experimental) {
+			any_array_push(workflow_items, tr("Sculpt"));
+		}
+
 		g_config->workflow = ui_inline_radio(workflow_handle, workflow_items, UI_ALIGN_LEFT);
 		if (workflow_handle->changed) {
 			g_config->workflow = workflow_handle->i;