Created
August 31, 2024 19:49
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Simple triangle with Nim, Raylib, rlgl
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| import rlgl, raylib | |
| proc main = | |
| setConfigFlags(flags(ConfigFlags.WindowResizable)) | |
| initWindow(800, 600, "Triangle") | |
| defer: closeWindow() | |
| let shader = loadShaderCode(""" | |
| #version 330 core | |
| layout (location = 0) in vec3 aPos; | |
| void main() | |
| { | |
| gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0); | |
| } | |
| """, """ | |
| #version 330 core | |
| out vec4 FragColor; | |
| void main() | |
| { | |
| FragColor = vec4(1.0f, 0.5f, 0.2f, 1.0f); | |
| } | |
| """) | |
| let vertexArray = loadVertexArray() | |
| assert enableVertexArray(vertexArray) | |
| var vertexData: array[9, float32] = [ | |
| -0.5f, -0.5f, 0.0f, | |
| 0.5f, -0.5f, 0.0f, | |
| 0.0f, 0.5f, 0.0f | |
| ] | |
| let vertexBuffer = loadVertexBuffer(vertexData[0].addr, vertexData.len * float32.sizeof, false) | |
| enableVertexBuffer(vertexBuffer) | |
| setVertexAttribute(0.uint32, 3, Float, false, 3 * float32.sizeof, 0) | |
| enableVertexAttribute(0.uint32) | |
| disableVertexArray() | |
| setTargetFPS(60) | |
| while not windowShouldClose(): | |
| beginDrawing() | |
| clearBackground(RAYWHITE) | |
| enableShader(shader) | |
| assert enableVertexArray(vertexArray) | |
| drawVertexArray(0, 3) | |
| disableShader() | |
| endDrawing() | |
| main() |
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