luboslenco
112 lines
6.6 KiB
C
112 lines
6.6 KiB
C
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#include "global.h"
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void make_texcoord_run(node_shader_t *kong) {
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bool fill_layer = g_context->layer->fill_layer != NULL;
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uv_type_t uv_type = fill_layer ? g_context->layer->uv_type : g_context->brush_paint;
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bool decal = context_is_decal();
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f32 angle = g_context->brush_angle + g_context->brush_nodes_angle;
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f32 uv_angle = fill_layer ? g_context->layer->angle : angle;
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if (uv_type == UV_TYPE_PROJECT || decal) { // TexCoords - project
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node_shader_add_constant(kong, "brush_scale: float", "_brush_scale");
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node_shader_write_attrib_frag(kong, "var uvsp: float2 = sp.xy;");
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if (fill_layer) { // Decal layer
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node_shader_write_attrib_frag(kong, "if (uvsp.x < 0.0 || uvsp.y < 0.0 || uvsp.x > 1.0 || uvsp.y > 1.0) { discard; }");
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if (uv_angle != 0.0) {
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node_shader_add_constant(kong, "brush_angle: float2", "_brush_angle");
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node_shader_write_attrib_frag(kong, "uvsp = float2(uvsp.x * constants.brush_angle.x - uvsp.y * constants.brush_angle.y, uvsp.x * "
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"constants.brush_angle.y + uvsp.y * constants.brush_angle.x);");
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}
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kong->frag_n = true;
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node_shader_add_constant(kong, "decal_layer_nor: float3", "_decal_layer_nor");
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f32 dot_angle = g_context->brush_angle_reject_dot;
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node_shader_write_frag(kong, string("if (abs(dot(n, constants.decal_layer_nor) - 1.0) > %s) { discard; }", f32_to_string(dot_angle)));
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kong->frag_wposition = true;
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node_shader_add_constant(kong, "decal_layer_loc: float3", "_decal_layer_loc");
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node_shader_add_constant(kong, "decal_layer_dim: float", "_decal_layer_dim");
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node_shader_write_attrib_frag(
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kong, "if (abs(dot(constants.decal_layer_nor, constants.decal_layer_loc - input.wposition)) > constants.decal_layer_dim) { discard; }");
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}
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else if (decal) {
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node_shader_add_constant(kong, "decal_mask: float4", "_decal_mask");
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node_shader_write_attrib_frag(kong, "uvsp = uvsp - constants.decal_mask.xy;");
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node_shader_write_attrib_frag(kong, "uvsp.x *= constants.aspect_ratio;");
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node_shader_write_attrib_frag(kong, "uvsp = uvsp * (0.21 / (constants.decal_mask.w * 0.9));");
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if (g_context->brush_directional) {
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node_shader_add_constant(kong, "brush_direction: float3", "_brush_direction");
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node_shader_write_attrib_frag(kong, "if (constants.brush_direction.z == 0.0) { discard; }");
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node_shader_write_attrib_frag(kong, "uvsp = float2(uvsp.x * constants.brush_direction.x - uvsp.y * constants.brush_direction.y, uvsp.x * "
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"constants.brush_direction.y + uvsp.y * constants.brush_direction.x);");
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}
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if (uv_angle != 0.0) {
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node_shader_add_constant(kong, "brush_angle: float2", "_brush_angle");
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node_shader_write_attrib_frag(kong, "uvsp = float2(uvsp.x * constants.brush_angle.x - uvsp.y * constants.brush_angle.y, uvsp.x * "
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"constants.brush_angle.y + uvsp.y * constants.brush_angle.x);");
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}
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node_shader_add_constant(kong, "brush_scale_x: float", "_brush_scale_x");
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node_shader_write_attrib_frag(kong, "uvsp.x *= constants.brush_scale_x;");
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node_shader_write_attrib_frag(kong, "uvsp += float2(0.5, 0.5);");
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node_shader_write_attrib_frag(kong, "if (uvsp.x < 0.0 || uvsp.y < 0.0 || uvsp.x > 1.0 || uvsp.y > 1.0) { discard; }");
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}
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else {
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node_shader_write_attrib_frag(kong, "uvsp.x *= constants.aspect_ratio;");
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if (uv_angle != 0.0) {
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node_shader_add_constant(kong, "brush_angle: float2", "_brush_angle");
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node_shader_write_attrib_frag(kong, "uvsp = float2(uvsp.x * constants.brush_angle.x - uvsp.y * constants.brush_angle.y, uvsp.x * "
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"constants.brush_angle.y + uvsp.y * constants.brush_angle.x);");
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}
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}
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node_shader_write_attrib_frag(kong, "var tex_coord: float2 = uvsp * constants.brush_scale;");
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}
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else if (uv_type == UV_TYPE_UVMAP) { // TexCoords - uvmap
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node_shader_add_constant(kong, "brush_scale: float", "_brush_scale");
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node_shader_add_out(kong, "tex_coord: float2");
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if (g_context->layer->uv_map == 1) {
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node_shader_write_vert(kong, "output.tex_coord = input.tex1 * constants.brush_scale;");
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}
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else {
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node_shader_write_vert(kong, "output.tex_coord = input.tex * constants.brush_scale;");
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}
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if (uv_angle > 0.0) {
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node_shader_add_constant(kong, "brush_angle: float2", "_brush_angle");
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node_shader_write_vert(kong,
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"output.tex_coord = float2(output.tex_coord.x * constants.brush_angle.x - output.tex_coord.y * constants.brush_angle.y, "
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"output.tex_coord.x * constants.brush_angle.y + output.tex_coord.y * constants.brush_angle.x);");
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}
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node_shader_write_attrib_frag(kong, "var tex_coord: float2 = input.tex_coord;");
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}
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else { // UV_TYPE_TRIPLANAR, TexCoords - triplanar
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kong->frag_wposition = true;
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kong->frag_n = true;
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node_shader_add_constant(kong, "brush_scale: float", "_brush_scale");
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node_shader_write_attrib_frag(kong, "var tri_weight: float3 = input.wnormal * input.wnormal;");
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node_shader_write_attrib_frag(kong, "var tri_max: float = max(tri_weight.x, max(tri_weight.y, tri_weight.z));");
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node_shader_write_attrib_frag(kong, "tri_weight = max3(tri_weight - float3(tri_max * 0.75, tri_max * 0.75, tri_max * 0.75), float3(0.0, 0.0, 0.0));");
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node_shader_write_attrib_frag(kong, "var tex_coord_blend: float3 = tri_weight * (1.0 / (tri_weight.x + tri_weight.y + tri_weight.z));");
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node_shader_write_attrib_frag(kong, "var tex_coord: float2 = input.wposition.yz * constants.brush_scale * 0.5;");
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node_shader_write_attrib_frag(kong, "var tex_coord1: float2 = input.wposition.xz * constants.brush_scale * 0.5;");
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node_shader_write_attrib_frag(kong, "var tex_coord2: float2 = input.wposition.xy * constants.brush_scale * 0.5;");
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if (uv_angle != 0.0) {
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node_shader_add_constant(kong, "brush_angle: float2", "_brush_angle");
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node_shader_write_attrib_frag(kong, "tex_coord = float2(tex_coord.x * constants.brush_angle.x - tex_coord.y * constants.brush_angle.y, tex_coord.x "
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"* constants.brush_angle.y + tex_coord.y * constants.brush_angle.x);");
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node_shader_write_attrib_frag(kong, "tex_coord1 = float2(tex_coord1.x * constants.brush_angle.x - tex_coord1.y * constants.brush_angle.y, "
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"tex_coord1.x * constants.brush_angle.y + tex_coord1.y * constants.brush_angle.x);");
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node_shader_write_attrib_frag(kong, "tex_coord2 = float2(tex_coord2.x * constants.brush_angle.x - tex_coord2.y * constants.brush_angle.y, "
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"tex_coord2.x * constants.brush_angle.y + tex_coord2.y * constants.brush_angle.x);");
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}
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}
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}
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