48 lines
1.3 KiB
TypeScript
48 lines
1.3 KiB
TypeScript
export function loadShader(gl: WebGL2RenderingContext, type: GLenum, source: string) {
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const shader = gl.createShader(type);
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if (!shader) {
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throw new Error("WebGL fails to create shader for given type");
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}
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gl.shaderSource(shader, source);
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gl.compileShader(shader);
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if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
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const compileError = gl.getShaderInfoLog(shader);
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throw new Error("Error when compiling shader: " + compileError);
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}
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return shader;
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}
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export function loadProgram(gl: WebGL2RenderingContext, vertexShader: WebGLShader, fragmentShader: WebGLShader) {
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const program = gl.createProgram();
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if (!program) {
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throw new Error("WebGL fails to create program");
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}
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gl.attachShader(program, vertexShader);
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gl.attachShader(program, fragmentShader);
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gl.linkProgram(program);
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if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
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const linkError = gl.getProgramInfoLog(program);
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throw new Error("Error when linking program: " + linkError);
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}
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return program;
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}
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export function loadBuffer(gl: WebGL2RenderingContext, vertices: Float32Array) {
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const buffer = gl.createBuffer();
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if (!buffer) {
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throw new Error("WebGL fails to create buffer");
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}
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gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
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gl.bufferData(gl.ARRAY_BUFFER, vertices, gl.STATIC_DRAW);
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return buffer;
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} |