summaryrefslogtreecommitdiffstats
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/default.vs8
-rw-r--r--src/index.ts138
-rw-r--r--src/view/Renderer.ts124
-rw-r--r--src/view/Scene.ts41
-rw-r--r--src/view/default.fs (renamed from src/default.fs)0
-rw-r--r--src/view/default.vs8
6 files changed, 178 insertions, 141 deletions
diff --git a/src/default.vs b/src/default.vs
deleted file mode 100644
index 457a528..0000000
--- a/src/default.vs
+++ /dev/null
@@ -1,8 +0,0 @@
-attribute vec3 aVertexPosition;
-
-uniform mat4 uVMatrix;
-uniform mat4 uPMatrix;
-
-void main(void) {
- gl_Position = uPMatrix * uVMatrix * vec4(aVertexPosition, 1.0);
-}
diff --git a/src/index.ts b/src/index.ts
index 8a5a067..718a321 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,141 +1,13 @@
-import {mat4} from 'gl-matrix';
+import Renderer from './view/Renderer';
+import Scene from './view/Scene';
(() => {
- const body = document.getElementsByTagName('body')[0];
-
const canvas = document.getElementById('rpgedit') as HTMLCanvasElement;
if (!canvas)
return;
- const gl = canvas.getContext('webgl') as WebGLRenderingContext;
- if (!gl)
- return;
-
- gl.clearColor(0.0, 0.0, 0.0, 1.0);
- gl.enable(gl.DEPTH_TEST);
-
-
- function compileShader(type: number, src: string): WebGLShader|null {
- let shader = gl.createShader(type);
- if (!shader) {
- console.error('Unable to create shader');
- return null;
- }
-
- gl.shaderSource(shader, src);
- gl.compileShader(shader);
-
- if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
- console.error('Unable to compile shader');
- return null;
- }
-
- return shader;
- }
-
-
- let shaderVertexPositionAttribute: number;
- let shaderPMatrixUniform: WebGLUniformLocation|null;
- let shaderVMatrixUniform: WebGLUniformLocation|null;
-
- function initShaders(): void {
- let shaderProgram = gl.createProgram();
-
- let vertexShader = compileShader(gl.VERTEX_SHADER, require('./default.vs'));
-
- let fragmentShaderSrc = require('./default.fs');
- let fragmentShader = compileShader(gl.FRAGMENT_SHADER, require('./default.fs'));
-
- if (!vertexShader || !fragmentShader)
- return;
-
- gl.attachShader(shaderProgram, vertexShader);
- gl.attachShader(shaderProgram, fragmentShader);
-
- gl.linkProgram(shaderProgram);
- if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
- console.error('Unable to link shader');
- return;
- }
-
- gl.useProgram(shaderProgram);
-
- shaderVertexPositionAttribute = gl.getAttribLocation(shaderProgram, "aVertexPosition");
- gl.enableVertexAttribArray(shaderVertexPositionAttribute);
-
- shaderPMatrixUniform = gl.getUniformLocation(shaderProgram, "uPMatrix");
- shaderVMatrixUniform = gl.getUniformLocation(shaderProgram, "uVMatrix");
- }
-
-
- const triangleVertexPositionBuffer = gl.createBuffer();
- const squareVertexPositionBuffer = gl.createBuffer();
-
- function initScene(): void {
- gl.bindBuffer(gl.ARRAY_BUFFER, triangleVertexPositionBuffer);
- const triangleVertices = [
- 0.0, 1.0, 0.0,
- -1.0, -1.0, 0.0,
- 1.0, -1.0, 0.0
- ];
- gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(triangleVertices), gl.STATIC_DRAW);
-
- gl.bindBuffer(gl.ARRAY_BUFFER, squareVertexPositionBuffer);
- const squareVertices = [
- 1.0, 1.0, 0.0,
- -1.0, 1.0, 0.0,
- 1.0, -1.0, 0.0,
- -1.0, -1.0, 0.0
- ];
- gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(squareVertices), gl.STATIC_DRAW);
- }
-
- initShaders();
- initScene();
-
- const pMatrix = mat4.create();
- const vMatrix = mat4.create();
-
- function drawScene(): void {
- if (!shaderPMatrixUniform || !shaderVMatrixUniform)
- return;
-
- let width = canvas.width, height = canvas.height
-
- gl.viewport(0, 0, width, height);
- gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
-
- mat4.perspective(pMatrix, 45, width / height, 0.1, 100.0);
- gl.uniformMatrix4fv(shaderPMatrixUniform, false, pMatrix);
-
- mat4.identity(vMatrix);
- mat4.translate(vMatrix, vMatrix, [-1.5, 0.0, -7.0]);
- gl.uniformMatrix4fv(shaderVMatrixUniform, false, vMatrix);
-
- gl.bindBuffer(gl.ARRAY_BUFFER, triangleVertexPositionBuffer);
- gl.vertexAttribPointer(shaderVertexPositionAttribute, 3, gl.FLOAT, false, 0, 0);
- gl.drawArrays(gl.TRIANGLES, 0, 3);
-
- mat4.translate(vMatrix, vMatrix, [3.0, 0.0, 0.0]);
- gl.uniformMatrix4fv(shaderVMatrixUniform, false, vMatrix);
-
- gl.bindBuffer(gl.ARRAY_BUFFER, squareVertexPositionBuffer);
- gl.vertexAttribPointer(shaderVertexPositionAttribute, 3, gl.FLOAT, false, 0, 0);
- gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
- }
-
- function setSize(): void {
- var e = document.documentElement;
- var w = window.innerWidth || e.clientWidth || body.clientWidth;
- var h = window.innerHeight || e.clientHeight || body.clientHeight;
-
- canvas.width = w;
- canvas.height = h;
-
- drawScene()
- }
-
- window.addEventListener('resize', () => setSize());
- setSize();
+ const renderer = new Renderer(canvas);
+ const scene = new Scene(renderer);
+ scene.draw();
})();
diff --git a/src/view/Renderer.ts b/src/view/Renderer.ts
new file mode 100644
index 0000000..556cfe3
--- /dev/null
+++ b/src/view/Renderer.ts
@@ -0,0 +1,124 @@
+import {mat4} from 'gl-matrix';
+
+
+class Renderer {
+ public gl: WebGLRenderingContext;
+
+ public vertexPosLoc: number;
+ private viewportLoc: WebGLUniformLocation;
+ private translateLoc: WebGLUniformLocation;
+
+ private viewport: mat4 = mat4.create();
+ private translate: mat4 = mat4.create();
+
+ private mkContext(): WebGLRenderingContext {
+ let gl = (this.canvas.getContext('webgl') || this.canvas.getContext('experimental-webgl')) as WebGLRenderingContext|null;
+ if (!gl)
+ throw new Error('unable to initialize WebGL context');
+
+ return gl;
+ }
+
+ getAttribLocation(program: WebGLProgram, name: string): number {
+ let ret = this.gl.getAttribLocation(program, name);
+ if (ret < 0)
+ throw new Error('unable to get location of attribute \'' + name + '\'');
+
+ return ret;
+ }
+
+ getUniformLocation(program: WebGLProgram, name: string): WebGLUniformLocation {
+ let ret = this.gl.getUniformLocation(program, name);
+ if (!ret)
+ throw new Error('unable to get location of uniform \'' + name + '\'');
+
+ return ret;
+ }
+
+ createBuffer(): WebGLBuffer {
+ let ret = this.gl.createBuffer();
+ if (!ret)
+ throw new Error('unable to create buffer');
+
+ return ret;
+ }
+
+ compileShader(type: number, src: string): WebGLShader {
+ let shader = this.gl.createShader(type);
+ if (!shader) {
+ throw new Error('Unable to create shader');
+ }
+
+ this.gl.shaderSource(shader, src);
+ this.gl.compileShader(shader);
+
+ if (!this.gl.getShaderParameter(shader, this.gl.COMPILE_STATUS)) {
+ let err = this.gl.getShaderInfoLog(shader);
+ this.gl.deleteShader(shader);
+ throw new Error('Unable to compile shader: ' + err);
+ }
+
+ return shader;
+ }
+
+ private initShaders(): void {
+ let shaderProgram = this.gl.createProgram();
+ if (!shaderProgram) {
+ throw new Error('Unable to create shader program');
+ }
+
+ let vertexShader = this.compileShader(this.gl.VERTEX_SHADER, require('./default.vs'));
+ let fragmentShader = this.compileShader(this.gl.FRAGMENT_SHADER, require('./default.fs'));
+
+
+ this.gl.attachShader(shaderProgram, vertexShader);
+ this.gl.attachShader(shaderProgram, fragmentShader);
+
+ this.gl.linkProgram(shaderProgram);
+ if (!this.gl.getProgramParameter(shaderProgram, this.gl.LINK_STATUS)) {
+ let err = this.gl.getProgramInfoLog(shaderProgram);
+
+ this.gl.deleteShader(vertexShader);
+ this.gl.deleteShader(fragmentShader);
+ this.gl.deleteProgram(shaderProgram);
+
+ throw new Error('Unable to link shader: ' + err);
+ }
+
+ this.gl.useProgram(shaderProgram);
+
+ this.vertexPosLoc = this.getAttribLocation(shaderProgram, 'vertexPos');
+ this.gl.enableVertexAttribArray(this.vertexPosLoc);
+
+ this.viewportLoc = this.getUniformLocation(shaderProgram, 'viewport');
+ this.translateLoc = this.getUniformLocation(shaderProgram, 'translate');
+ }
+
+ private setSize(): void {
+ let w = this.canvas.width;
+ let h = this.canvas.height;
+
+ this.gl.viewport(0, 0, w, h);
+ this.gl.clear(this.gl.COLOR_BUFFER_BIT | this.gl.DEPTH_BUFFER_BIT);
+
+ mat4.identity(this.viewport);
+ mat4.scale(this.viewport, this.viewport, [64 / w, 64 / h, 1.0]);
+ this.gl.uniformMatrix4fv(this.viewportLoc, false, this.viewport);
+
+ mat4.identity(this.translate);
+ this.gl.uniformMatrix4fv(this.translateLoc, false, this.translate);
+ }
+
+ constructor(private canvas: HTMLCanvasElement) {
+ this.gl = this.mkContext();
+
+ this.initShaders();
+
+ this.gl.clearColor(0.0, 0.0, 0.0, 1.0);
+ this.gl.enable(this.gl.DEPTH_TEST);
+
+ this.setSize();
+ }
+}
+
+export default Renderer;
diff --git a/src/view/Scene.ts b/src/view/Scene.ts
new file mode 100644
index 0000000..0de7546
--- /dev/null
+++ b/src/view/Scene.ts
@@ -0,0 +1,41 @@
+import Renderer from './Renderer';
+
+class Scene {
+ private triangleVertexPositionBuffer: WebGLBuffer;
+ private squareVertexPositionBuffer: WebGLBuffer;
+
+ constructor(private r: Renderer) {
+ this.triangleVertexPositionBuffer = r.createBuffer();
+ r.gl.bindBuffer(r.gl.ARRAY_BUFFER, this.triangleVertexPositionBuffer);
+ const triangleVertices = [
+ -1.5, 1.0,
+ -2.5, -1.0,
+ -0.5, -1.0,
+ ];
+ r.gl.bufferData(r.gl.ARRAY_BUFFER, new Float32Array(triangleVertices), r.gl.STATIC_DRAW);
+
+ this.squareVertexPositionBuffer = r.createBuffer();
+ r.gl.bindBuffer(r.gl.ARRAY_BUFFER, this.squareVertexPositionBuffer);
+ const squareVertices = [
+ 2.5, 1.0,
+ 0.5, 1.0,
+ 2.5, -1.0,
+ 0.5, -1.0,
+ ];
+ r.gl.bufferData(r.gl.ARRAY_BUFFER, new Float32Array(squareVertices), r.gl.STATIC_DRAW);
+ }
+
+ draw(): void {
+ this.r.gl.clear(this.r.gl.COLOR_BUFFER_BIT | this.r.gl.DEPTH_BUFFER_BIT);
+
+ this.r.gl.bindBuffer(this.r.gl.ARRAY_BUFFER, this.triangleVertexPositionBuffer);
+ this.r.gl.vertexAttribPointer(this.r.vertexPosLoc, 2, this.r.gl.FLOAT, false, 0, 0);
+ this.r.gl.drawArrays(this.r.gl.TRIANGLES, 0, 3);
+
+ this.r.gl.bindBuffer(this.r.gl.ARRAY_BUFFER, this.squareVertexPositionBuffer);
+ this.r.gl.vertexAttribPointer(this.r.vertexPosLoc, 2, this.r.gl.FLOAT, false, 0, 0);
+ this.r.gl.drawArrays(this.r.gl.TRIANGLE_STRIP, 0, 4);
+ }
+}
+
+export default Scene;
diff --git a/src/default.fs b/src/view/default.fs
index 7a085b6..7a085b6 100644
--- a/src/default.fs
+++ b/src/view/default.fs
diff --git a/src/view/default.vs b/src/view/default.vs
new file mode 100644
index 0000000..7c4eaeb
--- /dev/null
+++ b/src/view/default.vs
@@ -0,0 +1,8 @@
+attribute vec2 vertexPos;
+
+uniform mat4 viewport;
+uniform mat4 translate;
+
+void main(void) {
+ gl_Position = viewport * translate * vec4(vertexPos, 0.0, 1.0);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 22:49:06 +0100