Remove final references to WebGL1 from the examples

README-zh.md

@@ -41,7 +41,7 @@ PlayCanvas 是一款使用 HTML5 和 WebGL 技术运行游戏以及其他 3D 内
 
 PlayCanvas 是一款优秀的全功能游戏引擎。
 
-- 🧊 **图形** - 基于 WebGL1&2 的超前 2D + 3D 图形引擎
+- 🧊 **图形** - 基于 WebGL2 的超前 2D + 3D 图形引擎
 - 🏃 **动画** - 基于状态的强大动画功能，有效展现动画角色和随机场景属性
 - ⚛️ **物理** - 一体化的 3D 刚体物理引擎 [ammo.js](https://github.com/kripken/ammo.js)
 - 🎮 **输入** - 支持鼠标，键盘，触控，游戏控制器以及众多 VR 控制器 API

examples/src/examples/graphics/clustered-spot-shadows/example.mjs

@@ -333,9 +333,6 @@ assetListLoader.load(() => {
             spotlight.rotateLocal(90, 0, 0);
         });
 
-        // display shadow texture (debug feature, only works when depth is stored as color, which is webgl1)
-        // app.drawTexture(-0.7, 0.7, 0.4, 0.4, app.renderer.lightTextureAtlas.shadowAtlas.texture);
-
         // display cookie texture (debug feature)
         if (debugAtlas) {
             // @ts-ignore engine-tsd

examples/src/examples/graphics/grab-pass/config.mjs

@@ -61,7 +61,7 @@ export default {
                 // get background pixel color with distorted offset
                 vec3 grabColor = texture2DLodEXT(uSceneColorMap, grabUv + offset, mipmap).rgb;
 
-                // tint the material based on mipmap, on WebGL2 only, as WebGL1 does not support non-constant array indexing
+                // tint the material based on mipmap
                 // (note - this could be worked around by using a series of if statements in this case)
                 #ifdef GL2
                     float tintIndex = clamp(mipmap, 0.0, 3.0);

examples/src/examples/graphics/integer-textures/controls.mjs

@@ -1,19 +1,11 @@
-import * as pc from 'playcanvas';
-
 /**
  * @param {import('../../../app/components/Example.mjs').ControlOptions} options - The options.
  * @returns {JSX.Element} The returned JSX Element.
  */
 export function controls({ observer, ReactPCUI, jsx, fragment }) {
-    const { BindingTwoWay, Container, Button, InfoBox, LabelGroup, Panel, SliderInput, SelectInput } = ReactPCUI;
+    const { BindingTwoWay, Container, Button, LabelGroup, Panel, SliderInput, SelectInput } = ReactPCUI;
 
     return fragment(
-        jsx(InfoBox, {
-            icon: 'E218',
-            title: 'WebGL 1.0',
-            text: 'Integer textures are not supported on WebGL 1.0 devices',
-            hidden: !(pc.app?.graphicsDevice.isWebGL1 ?? false)
-        }),
         jsx(
             Panel,
             { headerText: 'Sand simulation' },

examples/src/examples/graphics/integer-textures/example.mjs

@@ -99,11 +99,9 @@ const createPixelRenderTarget = (i, colorBuffer) => {
 // Create our integer pixel buffers and render targets
 const pixelColorBuffers = [];
 const pixelRenderTargets = [];
-if (!device.isWebGL1) {
-    pixelColorBuffers.push(createPixelColorBuffer(0), createPixelColorBuffer(1));
-    pixelRenderTargets.push(createPixelRenderTarget(0, pixelColorBuffers[0]));
-    pixelRenderTargets.push(createPixelRenderTarget(1, pixelColorBuffers[1]));
-}
+pixelColorBuffers.push(createPixelColorBuffer(0), createPixelColorBuffer(1));
+pixelRenderTargets.push(createPixelRenderTarget(0, pixelColorBuffers[0]));
+pixelRenderTargets.push(createPixelRenderTarget(1, pixelColorBuffers[1]));
 
 const sourceTexture = pixelColorBuffers[0];
 const sourceRenderTarget = pixelRenderTargets[0];
@@ -153,7 +151,6 @@ const outputShader = pc.createShaderFromCode(
 
 // Write the initial simulation state to the integer texture
 const resetData = () => {
-    if (device.isWebGL1) return;
     // Loop through the pixels in the texture
     // and initialize them to either AIR, SAND or WALL
     const sourceTextureData = sourceTexture.lock();
@@ -312,10 +309,6 @@ assetListLoader.load(() => {
 
     let passNum = 0;
     app.on('update', function (/** @type {number} */) {
-        if (device.isWebGL1) {
-            // WebGL1 does not support integer textures
-            return;
-        }
 
         mouseUniform[0] = mousePos.x;
         mouseUniform[1] = mousePos.y;

examples/src/examples/graphics/texture-array/controls.mjs

@@ -1,18 +1,10 @@
-import * as pc from 'playcanvas';
-
 /**
  * @param {import('../../../app/components/Example.mjs').ControlOptions} options - The options.
  * @returns {JSX.Element} The returned JSX Element.
  */
 export function controls({ observer, ReactPCUI, React, jsx, fragment }) {
-    const { InfoBox, BindingTwoWay, LabelGroup, Panel, BooleanInput } = ReactPCUI;
+    const { BindingTwoWay, LabelGroup, Panel, BooleanInput } = ReactPCUI;
     return fragment(
-        jsx(InfoBox, {
-            icon: 'E218',
-            title: 'WebGL 1.0',
-            text: 'Texture Arrays are not supported on WebGL 1.0 devices',
-            hidden: !(pc.app?.graphicsDevice.isWebGL1 ?? false)
-        }),
         jsx(
             Panel,
             { headerText: 'Texture Arrays' },

examples/src/examples/graphics/texture-array/example.mjs

@@ -95,11 +95,6 @@ app.on('destroy', () => {
 const assetListLoader = new pc.AssetListLoader(Object.values(assets), app.assets);
 assetListLoader.load(() => {
     app.start();
-
-    if (app.graphicsDevice.isWebGL1) {
-        return app;
-    }
-
     app.scene.ambientLight = new pc.Color(0.2, 0.2, 0.2);
 
     // Create directional light

scripts/posteffects/posteffect-ssao.js

@@ -194,16 +194,7 @@ function SSAOEffect(graphicsDevice, ssaoScript) {
         "    float ssDiskRadius = -(uProjectionScaleRadius / origin.z);",
         "",
         "    float occlusion = 0.0;",
-
-        // webgl1 does not handle non-constant loop, work around it
-        graphicsDevice.isWebGL2 ? (
-            "    for (float i = 0.0; i < uSampleCount.x; i += 1.0) {"
-        ) : (
-            "   const float maxSampleCount = 256.0;" +
-            "   for (float i = 0.0; i < maxSampleCount; i += 1.0) {" +
-            "       if (i >= uSampleCount.x) break;"
-        ),
-
+        "    for (float i = 0.0; i < uSampleCount.x; i += 1.0) {",
         "        computeAmbientOcclusionSAO(occlusion, i, ssDiskRadius, uv, origin, normal, tapPosition, noise);",
         "        tapPosition = angleStep * tapPosition;",
         "    }",
@@ -288,16 +279,8 @@ function SSAOEffect(graphicsDevice, ssaoScript) {
         "    float ssao = texture2D( uSSAOBuffer, vUv0 ).r;",
         "    float sum = ssao * totalWeight;",
         "",
-
-        // webgl1 does not handle non-constant loop, work around it
-        graphicsDevice.isWebGL2 ? (
-            "    for (int x = -uBilatSampleCount; x <= uBilatSampleCount; x++) {" +
-            "       for (int y = -uBilatSampleCount; y < uBilatSampleCount; y++) {"
-        ) : (
-            "    for (int x = -4; x <= 4; x++) {" +
-            "       for (int y = -4; y < 4; y++) {"
-        ),
-
+        "    for (int x = -uBilatSampleCount; x <= uBilatSampleCount; x++) {",
+        "       for (int y = -uBilatSampleCount; y < uBilatSampleCount; y++) {",
         "           float weight = 1.0;",
         "           vec2 offset = vec2(x,y)*uResolution.zw;",
         "           tap(sum, totalWeight, weight, depth, uv + offset);",