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refacto : split vertex attrib configuration

This commit is contained in:
gbrochar 2020-11-26 09:35:37 +01:00
parent 94251a4806
commit 3ab1c7b1ca
2 changed files with 59 additions and 51 deletions
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53
src/client/main.ts
View File

@ -13,6 +13,7 @@ import {initShaderProgram} from './shaders';
import {changeFragmentShader} from './changeshader';
import {loadTexture} from './texture';
import {initMatrices} from './matrix';
import {initVertexAttribs} from './vertexattrib';
main();
@ -338,57 +339,7 @@ function drawScene(gl: any,
gl.depthFunc(gl.LEQUAL);
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
{
const numComponents = 3;
const type = gl.FLOAT;
const normalize = false;
const stride = 0;
const offset = 0;
gl.bindBuffer(gl.ARRAY_BUFFER, buffers.positions);
gl.vertexAttribPointer(
programInfo.attribLocations.vertexPosition,
numComponents,
type,
normalize,
stride,
offset);
gl.enableVertexAttribArray(
programInfo.attribLocations.vertexPosition);
}
{
const numComponents = 3;
const type = gl.FLOAT;
const normalize = false;
const stride = 0;
const offset = 0;
gl.bindBuffer(gl.ARRAY_BUFFER, buffers.normals);
gl.vertexAttribPointer(
programInfo.attribLocations.vertexNormal,
numComponents,
type,
normalize,
stride,
offset);
gl.enableVertexAttribArray(
programInfo.attribLocations.vertexNormal);
}
{
const numComponents = 2;
const type = gl.FLOAT;
const normalize = false;
const stride = 0;
const offset = 0;
gl.bindBuffer(gl.ARRAY_BUFFER, buffers.uvs);
gl.vertexAttribPointer(programInfo.attribLocations.textureCoord,
numComponents,
type,
normalize,
stride,
offset);
gl.enableVertexAttribArray(programInfo.attribLocations.textureCoord);
}
initVertexAttribs(gl, programInfo, buffers);
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, buffers.indices);
gl.useProgram(programInfo.program);
gl.activeTexture(gl.TEXTURE0);

57
src/client/vertexattrib.ts Normal file
View File

@ -0,0 +1,57 @@
/**
* Initialize Vertex Attributes
* @param {any} gl the WebGL content
* @param {any} programInfo WebGL program information
* @param {any} buffers the buffers to init
*/
export function initVertexAttribs(gl: any, programInfo: any, buffers: any) {
{
const numComponents = 3;
const type = gl.FLOAT;
const normalize = false;
const stride = 0;
const offset = 0;
gl.bindBuffer(gl.ARRAY_BUFFER, buffers.positions);
gl.vertexAttribPointer(
programInfo.attribLocations.vertexPosition,
numComponents,
type,
normalize,
stride,
offset);
gl.enableVertexAttribArray(
programInfo.attribLocations.vertexPosition);
}
{
const numComponents = 3;
const type = gl.FLOAT;
const normalize = false;
const stride = 0;
const offset = 0;
gl.bindBuffer(gl.ARRAY_BUFFER, buffers.normals);
gl.vertexAttribPointer(
programInfo.attribLocations.vertexNormal,
numComponents,
type,
normalize,
stride,
offset);
gl.enableVertexAttribArray(
programInfo.attribLocations.vertexNormal);
}
{
const numComponents = 2;
const type = gl.FLOAT;
const normalize = false;
const stride = 0;
const offset = 0;
gl.bindBuffer(gl.ARRAY_BUFFER, buffers.uvs);
gl.vertexAttribPointer(programInfo.attribLocations.textureCoord,
numComponents,
type,
normalize,
stride,
offset);
gl.enableVertexAttribArray(programInfo.attribLocations.textureCoord);
}
}