molstar
Version:
A comprehensive macromolecular library.
314 lines (313 loc) • 14.8 kB
JavaScript
/**
* Copyright (c) 2018-2022 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author Alexander Rose <alexander.rose@weirdbyte.de>
*/
import { idFactory } from '../mol-util/id-factory';
import { isWebGL2 } from './webgl/compat';
var shaderCodeId = idFactory();
import { apply_fog } from './shader/chunks/apply-fog.glsl';
import { apply_interior_color } from './shader/chunks/apply-interior-color.glsl';
import { apply_light_color } from './shader/chunks/apply-light-color.glsl';
import { apply_marker_color } from './shader/chunks/apply-marker-color.glsl';
import { assign_clipping_varying } from './shader/chunks/assign-clipping-varying.glsl';
import { assign_color_varying } from './shader/chunks/assign-color-varying.glsl';
import { assign_group } from './shader/chunks/assign-group.glsl';
import { assign_marker_varying } from './shader/chunks/assign-marker-varying.glsl';
import { assign_material_color } from './shader/chunks/assign-material-color.glsl';
import { assign_position } from './shader/chunks/assign-position.glsl';
import { assign_size } from './shader/chunks/assign-size.glsl';
import { check_picking_alpha } from './shader/chunks/check-picking-alpha.glsl';
import { clip_instance } from './shader/chunks/clip-instance.glsl';
import { clip_pixel } from './shader/chunks/clip-pixel.glsl';
import { color_frag_params } from './shader/chunks/color-frag-params.glsl';
import { color_vert_params } from './shader/chunks/color-vert-params.glsl';
import { common_clip } from './shader/chunks/common-clip.glsl';
import { common_frag_params } from './shader/chunks/common-frag-params.glsl';
import { common_vert_params } from './shader/chunks/common-vert-params.glsl';
import { common } from './shader/chunks/common.glsl';
import { float_to_rgba } from './shader/chunks/float-to-rgba.glsl';
import { light_frag_params } from './shader/chunks/light-frag-params.glsl';
import { matrix_scale } from './shader/chunks/matrix-scale.glsl';
import { normal_frag_params } from './shader/chunks/normal-frag-params.glsl';
import { read_from_texture } from './shader/chunks/read-from-texture.glsl';
import { rgba_to_float } from './shader/chunks/rgba-to-float.glsl';
import { size_vert_params } from './shader/chunks/size-vert-params.glsl';
import { texture3d_from_1d_trilinear } from './shader/chunks/texture3d-from-1d-trilinear.glsl';
import { texture3d_from_2d_linear } from './shader/chunks/texture3d-from-2d-linear.glsl';
import { texture3d_from_2d_nearest } from './shader/chunks/texture3d-from-2d-nearest.glsl';
import { wboit_write } from './shader/chunks/wboit-write.glsl';
import { dpoit_write } from './shader/chunks/dpoit-write.glsl';
var ShaderChunks = {
apply_fog: apply_fog,
apply_interior_color: apply_interior_color,
apply_light_color: apply_light_color,
apply_marker_color: apply_marker_color,
assign_clipping_varying: assign_clipping_varying,
assign_color_varying: assign_color_varying,
assign_group: assign_group,
assign_marker_varying: assign_marker_varying,
assign_material_color: assign_material_color,
assign_position: assign_position,
assign_size: assign_size,
check_picking_alpha: check_picking_alpha,
clip_instance: clip_instance,
clip_pixel: clip_pixel,
color_frag_params: color_frag_params,
color_vert_params: color_vert_params,
common_clip: common_clip,
common_frag_params: common_frag_params,
common_vert_params: common_vert_params,
common: common,
float_to_rgba: float_to_rgba,
light_frag_params: light_frag_params,
matrix_scale: matrix_scale,
normal_frag_params: normal_frag_params,
read_from_texture: read_from_texture,
rgba_to_float: rgba_to_float,
size_vert_params: size_vert_params,
texture3d_from_1d_trilinear: texture3d_from_1d_trilinear,
texture3d_from_2d_linear: texture3d_from_2d_linear,
texture3d_from_2d_nearest: texture3d_from_2d_nearest,
wboit_write: wboit_write,
dpoit_write: dpoit_write
};
var reInclude = /^(?!\/\/)\s*#include\s+(\S+)/gm;
var reUnrollLoop = /#pragma unroll_loop_start\s+for\s*\(\s*int\s+i\s*=\s*(\d+)\s*;\s*i\s*<\s*(\d+)\s*;\s*\+\+i\s*\s*\)\s*{([\s\S]+?)}\s+#pragma unroll_loop_end/g;
var reSingleLineComment = /[ \t]*\/\/.*\n/g;
var reMultiLineComment = /[ \t]*\/\*[\s\S]*?\*\//g;
var reMultipleLinebreaks = /\n{2,}/g;
function addIncludes(text) {
return text
.replace(reInclude, function (_, p1) {
var chunk = ShaderChunks[p1];
if (!chunk)
throw new Error("empty chunk, '".concat(p1, "'"));
return chunk;
})
.trim()
.replace(reSingleLineComment, '\n')
.replace(reMultiLineComment, '\n')
.replace(reMultipleLinebreaks, '\n');
}
function unrollLoops(str) {
return str.replace(reUnrollLoop, loopReplacer);
}
function loopReplacer(match, start, end, snippet) {
var out = '';
for (var i = parseInt(start); i < parseInt(end); ++i) {
out += snippet
.replace(/\[\s*i\s*\]/g, "[".concat(i, "]"))
.replace(/UNROLLED_LOOP_INDEX/g, "".concat(i));
}
return out;
}
function replaceCounts(str, defines) {
if (defines.dLightCount)
str = str.replace(/dLightCount/g, "".concat(defines.dLightCount.ref.value));
if (defines.dClipObjectCount)
str = str.replace(/dClipObjectCount/g, "".concat(defines.dClipObjectCount.ref.value));
return str;
}
function preprocess(str, defines) {
return unrollLoops(replaceCounts(str, defines));
}
export function ShaderCode(name, vert, frag, extensions, outTypes, ignoreDefine) {
if (extensions === void 0) { extensions = {}; }
if (outTypes === void 0) { outTypes = {}; }
return { id: shaderCodeId(), name: name, vert: addIncludes(vert), frag: addIncludes(frag), extensions: extensions, outTypes: outTypes, ignoreDefine: ignoreDefine };
}
// Note: `drawBuffers` need to be 'optional' for wboit
function ignoreDefine(name, variant, defines) {
var _a;
if (variant.startsWith('color')) {
if (name === 'dLightCount') {
return !!((_a = defines.dIgnoreLight) === null || _a === void 0 ? void 0 : _a.ref.value);
}
}
else {
return [
'dColorType', 'dUsePalette',
'dLightCount',
'dOverpaintType', 'dOverpaint',
'dSubstanceType', 'dSubstance',
].includes(name);
}
return false;
}
;
function ignoreDefineUnlit(name, variant, defines) {
if (name === 'dLightCount')
return true;
return ignoreDefine(name, variant, defines);
}
;
import { points_vert } from './shader/points.vert';
import { points_frag } from './shader/points.frag';
export var PointsShaderCode = ShaderCode('points', points_vert, points_frag, { drawBuffers: 'optional' }, {}, ignoreDefineUnlit);
import { spheres_vert } from './shader/spheres.vert';
import { spheres_frag } from './shader/spheres.frag';
export var SpheresShaderCode = ShaderCode('spheres', spheres_vert, spheres_frag, { fragDepth: 'required', drawBuffers: 'optional' }, {}, ignoreDefine);
import { cylinders_vert } from './shader/cylinders.vert';
import { cylinders_frag } from './shader/cylinders.frag';
export var CylindersShaderCode = ShaderCode('cylinders', cylinders_vert, cylinders_frag, { fragDepth: 'required', drawBuffers: 'optional' }, {}, ignoreDefine);
import { text_vert } from './shader/text.vert';
import { text_frag } from './shader/text.frag';
export var TextShaderCode = ShaderCode('text', text_vert, text_frag, { drawBuffers: 'optional' }, {}, ignoreDefineUnlit);
import { lines_vert } from './shader/lines.vert';
import { lines_frag } from './shader/lines.frag';
export var LinesShaderCode = ShaderCode('lines', lines_vert, lines_frag, { drawBuffers: 'optional' }, {}, ignoreDefineUnlit);
import { mesh_vert } from './shader/mesh.vert';
import { mesh_frag } from './shader/mesh.frag';
export var MeshShaderCode = ShaderCode('mesh', mesh_vert, mesh_frag, { drawBuffers: 'optional' }, {}, ignoreDefine);
import { directVolume_vert } from './shader/direct-volume.vert';
import { directVolume_frag } from './shader/direct-volume.frag';
export var DirectVolumeShaderCode = ShaderCode('direct-volume', directVolume_vert, directVolume_frag, { fragDepth: 'optional', drawBuffers: 'optional' }, {}, ignoreDefine);
import { image_vert } from './shader/image.vert';
import { image_frag } from './shader/image.frag';
import { assertUnreachable } from '../mol-util/type-helpers';
export var ImageShaderCode = ShaderCode('image', image_vert, image_frag, { drawBuffers: 'optional' }, {}, ignoreDefineUnlit);
function getDefinesCode(defines, ignore) {
var _a;
if (defines === undefined)
return '';
var variant = (((_a = defines.dRenderVariant) === null || _a === void 0 ? void 0 : _a.ref.value) || '');
var lines = [];
for (var name_1 in defines) {
if (ignore === null || ignore === void 0 ? void 0 : ignore(name_1, variant, defines))
continue;
var define = defines[name_1];
var v = define.ref.value;
if (v !== undefined) {
if (typeof v === 'string') {
lines.push("#define ".concat(name_1, "_").concat(v));
}
else if (typeof v === 'number') {
lines.push("#define ".concat(name_1, " ").concat(v));
}
else if (typeof v === 'boolean') {
if (v)
lines.push("#define ".concat(name_1));
}
else {
assertUnreachable(v);
}
}
}
return lines.join('\n') + '\n';
}
function getGlsl100VertPrefix(extensions, shaderExtensions) {
var prefix = [];
if (shaderExtensions.drawBuffers) {
if (extensions.drawBuffers) {
prefix.push('#define requiredDrawBuffers');
}
else if (shaderExtensions.drawBuffers === 'required') {
throw new Error("required 'GL_EXT_draw_buffers' extension not available");
}
}
return prefix.join('\n') + '\n';
}
function getGlsl100FragPrefix(extensions, shaderExtensions) {
var prefix = [
'#extension GL_OES_standard_derivatives : enable'
];
if (shaderExtensions.fragDepth) {
if (extensions.fragDepth) {
prefix.push('#extension GL_EXT_frag_depth : enable');
prefix.push('#define enabledFragDepth');
}
else if (shaderExtensions.fragDepth === 'required') {
throw new Error("required 'GL_EXT_frag_depth' extension not available");
}
}
if (shaderExtensions.drawBuffers) {
if (extensions.drawBuffers) {
prefix.push('#extension GL_EXT_draw_buffers : require');
prefix.push('#define requiredDrawBuffers');
prefix.push('#define gl_FragColor gl_FragData[0]');
}
else if (shaderExtensions.drawBuffers === 'required') {
throw new Error("required 'GL_EXT_draw_buffers' extension not available");
}
}
if (shaderExtensions.shaderTextureLod) {
if (extensions.shaderTextureLod) {
prefix.push('#extension GL_EXT_shader_texture_lod : enable');
prefix.push('#define enabledShaderTextureLod');
}
else if (shaderExtensions.shaderTextureLod === 'required') {
throw new Error("required 'GL_EXT_shader_texture_lod' extension not available");
}
}
if (extensions.depthTexture) {
prefix.push('#define depthTextureSupport');
}
return prefix.join('\n') + '\n';
}
var glsl300VertPrefixCommon = "\n#define attribute in\n#define varying out\n#define texture2D texture\n";
var glsl300FragPrefixCommon = "\n#define varying in\n#define texture2D texture\n#define textureCube texture\n#define texture2DLodEXT textureLod\n#define textureCubeLodEXT textureLod\n\n#define gl_FragColor out_FragData0\n#define gl_FragDepthEXT gl_FragDepth\n\n#define depthTextureSupport\n";
function getGlsl300VertPrefix(extensions, shaderExtensions) {
var prefix = [
'#version 300 es',
];
if (shaderExtensions.drawBuffers) {
if (extensions.drawBuffers) {
prefix.push('#define requiredDrawBuffers');
}
}
if (extensions.noNonInstancedActiveAttribs) {
prefix.push('#define noNonInstancedActiveAttribs');
}
prefix.push(glsl300VertPrefixCommon);
return prefix.join('\n') + '\n';
}
function getGlsl300FragPrefix(gl, extensions, shaderExtensions, outTypes) {
var prefix = [
'#version 300 es',
"layout(location = 0) out highp ".concat(outTypes[0] || 'vec4', " out_FragData0;")
];
if (shaderExtensions.fragDepth) {
if (extensions.fragDepth) {
prefix.push('#define enabledFragDepth');
}
}
if (shaderExtensions.drawBuffers) {
if (extensions.drawBuffers) {
prefix.push('#define requiredDrawBuffers');
var maxDrawBuffers = gl.getParameter(gl.MAX_DRAW_BUFFERS);
for (var i = 1, il = maxDrawBuffers; i < il; ++i) {
prefix.push("layout(location = ".concat(i, ") out highp ").concat(outTypes[i] || 'vec4', " out_FragData").concat(i, ";"));
}
}
}
if (shaderExtensions.shaderTextureLod) {
if (extensions.shaderTextureLod) {
prefix.push('#define enabledShaderTextureLod');
}
}
prefix.push(glsl300FragPrefixCommon);
return prefix.join('\n') + '\n';
}
function transformGlsl300Frag(frag) {
return frag.replace(/gl_FragData\[([0-9]+)\]/g, 'out_FragData$1');
}
export function addShaderDefines(gl, extensions, defines, shaders) {
var vertHeader = getDefinesCode(defines, shaders.ignoreDefine);
var fragHeader = getDefinesCode(defines, shaders.ignoreDefine);
var vertPrefix = isWebGL2(gl)
? getGlsl300VertPrefix(extensions, shaders.extensions)
: getGlsl100VertPrefix(extensions, shaders.extensions);
var fragPrefix = isWebGL2(gl)
? getGlsl300FragPrefix(gl, extensions, shaders.extensions, shaders.outTypes)
: getGlsl100FragPrefix(extensions, shaders.extensions);
var frag = isWebGL2(gl) ? transformGlsl300Frag(shaders.frag) : shaders.frag;
return {
id: shaderCodeId(),
name: shaders.name,
vert: "".concat(vertPrefix).concat(vertHeader).concat(preprocess(shaders.vert, defines)),
frag: "".concat(fragPrefix).concat(fragHeader).concat(preprocess(frag, defines)),
extensions: shaders.extensions,
outTypes: shaders.outTypes
};
}