luboslenco
56 lines
3.5 KiB
C
56 lines
3.5 KiB
C
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#include "../global.h"
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void make_discard_color_id(node_shader_t *kong, char *tex_coord) {
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node_shader_add_texture(kong, "texpaint_colorid", NULL); // 1x1 picker
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node_shader_add_texture(kong, "texcolorid", "_texcolorid"); // color map
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// node_shader_write_frag(kong, "var colorid_c1: float3 = texpaint_colorid[uint2(0, 0)].rgb;");
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node_shader_write_frag(kong, "var colorid_c14: float4 = texpaint_colorid[uint2(uint(0), uint(0))];");
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node_shader_write_frag(kong, "var colorid_c1: float3 = colorid_c14.rgb;");
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node_shader_write_frag(kong, string_tmp("var colorid_c2: float3 = sample_lod(texcolorid, sampler_linear, input.%s, 0.0).rgb;", tex_coord));
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// node_shader_write_frag(kong, "if (any(colorid_c1 != colorid_c2)) { discard };");
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node_shader_write_frag(kong, "if (colorid_c1.r != colorid_c2.r || colorid_c1.g != colorid_c2.g || colorid_c1.b != colorid_c2.b) { discard; }");
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}
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void make_discard_face(node_shader_t *kong) {
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node_shader_add_texture(kong, "gbuffer2", NULL);
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node_shader_add_texture(kong, "textrianglemap", "_textrianglemap");
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node_shader_add_constant(kong, "textrianglemap_size: float2", "_texpaint_size");
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node_shader_add_constant(kong, "gbuffer_size: float2", "_gbuffer_size");
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// node_shader_write_frag(kong, "var tex_coord_inp: float2 = gbuffer2[uint2(constants.inp.x * constants.gbuffer_size.x, constants.inp.y *
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// constants.gbuffer_size.y)].ba;");
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node_shader_write_frag(
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kong,
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"var tex_coord_inp4: float4 = gbuffer2[uint2(uint(constants.inp.x * constants.gbuffer_size.x), uint(constants.inp.y * constants.gbuffer_size.y))];");
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node_shader_write_frag(kong, "var tex_coord_inp: float2 = tex_coord_inp4.ba;");
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node_shader_write_frag(kong, "var face_c1: float4 = textrianglemap[uint2(uint(tex_coord_inp.x * constants.textrianglemap_size.x), uint(tex_coord_inp.y * "
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"constants.textrianglemap_size.y))];");
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node_shader_write_frag(kong, "var face_c2: float4 = sample_lod(textrianglemap, sampler_linear, input.tex_coord_pick, 0.0);");
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// node_shader_write_frag(kong, "if (any(face_c1 != face_c2)) { discard; }");
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node_shader_write_frag(kong, "if (face_c1.x != face_c2.x || face_c1.y != face_c2.y || face_c1.z != face_c2.z || face_c1.w != face_c2.w) { discard; }");
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}
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void make_discard_uv_island(node_shader_t *kong) {
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node_shader_add_texture(kong, "texuvislandmap", "_texuvislandmap");
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node_shader_write_frag(kong, "if (sample_lod(texuvislandmap, sampler_linear, input.tex_coord_pick, 0.0).r == 0.0) { discard; }");
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}
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void make_discard_material_id(node_shader_t *kong, char *tex_coord) {
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char *tc;
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if (tex_coord == NULL) {
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kong->frag_wvpposition = true;
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node_shader_write_frag(
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kong, "var picker_sample_tc: float2 = float2(input.wvpposition.x / input.wvpposition.w, input.wvpposition.y / input.wvpposition.w) * 0.5 + 0.5;");
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node_shader_write_frag(kong, "picker_sample_tc.y = 1.0 - picker_sample_tc.y;");
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tc = "picker_sample_tc";
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}
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else {
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tc = string_tmp("input.%s", tex_coord);
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}
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node_shader_add_texture(kong, "texpaint_nor_undo", "_texpaint_nor_undo");
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node_shader_write_frag(kong, string_tmp("var picker_sample_a: float = sample_lod(texpaint_nor_undo, sampler_linear, %s, 0.0).a;", tc));
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// material_id * 3 + (0 - normal, 1 - emission, 2 - subsurface)
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node_shader_write_frag(kong, "var picker_sample_id: float = floor(floor(picker_sample_a * 255.0 + 0.5) / 3.0);");
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node_shader_write_frag(kong, string_tmp("if (abs(picker_sample_id - %s) > 0.5) { discard; }", f32_to_string_with_zeros((f32)g_context->materialid_picked)));
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}
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