On Tue, 1 May 2018, Ryan Joseph wrote:
On May 1, 2018, at 4:10 PM, Mattias Gaertner <nc-gaert...@netcologne.de> wrote: In pas2js it will probably look similar to this: var vertices: array of glfloat = (-0.5, 0.5, -0.5, -0.5, 0.0, -0.5); var vertex_buffer: TInsertNameHere; begin // Create a new buffer object vertex_buffer = gl.createBuffer(); // Bind an empty array buffer to it gl.bindBuffer(gl.ARRAY_BUFFER, vertex_buffer); // Pass the vertices data to the buffer gl.bufferData(gl.ARRAY_BUFFER, Float32Array.new(vertices), gl.STATIC_DRAW); // Unbind the buffer gl.bindBuffer(gl.ARRAY_BUFFER, nil); end;Strange they renamed glGenBuffers to createBuffer(). That aside though not having records is a problem I imagine. They don’t exist in JS right, so how do they deal with that? I guess you could pack a record into an array literal if all the types were the same. Arrays of arrays in literals works also. can’t we do that? We’re at the mercy of Float32Array.new packing that though or we need another method. What a waste of processing to convert that. That would be a nightmare for real applications to iterate all the verticies like that every time they were copied to the GPU.
What's wrong with the above code ? It obviously works well enough, otherwise they wouldn't have made the API so. The float32 array is a Javascript type that encapsulates a memory buffer. I assume the webgl creators decided it has the optimal layout for their needs. Michael.
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