mirror of https://github.com/commaai/tinygrad.git
53 lines
2.6 KiB
Python
53 lines
2.6 KiB
Python
import numpy as np
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import functools
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from tinygrad.dtype import dtypes, ImageDType
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from tinygrad.device import Compiled, Allocator, CompilerOptions
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from tinygrad.codegen.kernel import OptOps
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from tinygrad.renderer.cstyle import uops_to_cstyle
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from tinygrad.renderer.cstyle import GLSLLanguage
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import moderngl
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ctx = moderngl.create_standalone_context()
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max_dims = 4096
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dtype_map = { dtypes.float64: "f8", dtypes.float: "f4", dtypes.half: "f2", dtypes.int32: "i4", dtypes.uint32: "u4", dtypes.bool: "i1"}
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vertex_shader="#version 330\nprecision highp float;\nin vec2 in_position;in vec2 in_uv;out vec2 uv;void main(){\
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gl_Position=vec4(in_position,0.0,1.0);uv=in_uv;}"
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class WebGLProgram:
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def __init__(self, name: str, prg: str, bufs:int=0, vars:int=0):
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self.name, self.prg = name, ctx.program(vertex_shader=vertex_shader, fragment_shader=prg)
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def __call__(self, *bufs, global_size, local_size=None, vals=(), wait=False):
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vert = ctx.buffer(np.asarray([-1, 1, -1, -1, 1, 1, 1, -1], dtype='f4').tobytes())
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uv = ctx.buffer(np.asarray([0, 1, 0, 0, 1, 1, 1, 0], dtype='f4').tobytes())
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self.vao = ctx.vertex_array(self.prg, [])
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self.vao.bind(self.prg["in_position"].location if "in_position" in self.prg else 0, buffer=vert, cls='f', fmt='2f4')
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self.vao.bind(self.prg["in_uv"].location if "in_uv" in self.prg else 1, buffer=uv, cls='f', fmt='2f4')
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self.vao.vertices = vert.size//4//2
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self.fbo = ctx.framebuffer(color_attachments=[bufs[0]])
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for i, x in enumerate(bufs[1:], start=1):
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if f"data{i}" in self.prg:
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self.prg[f"data{i}"] = i
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x.use(i)
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if ("width" in self.prg): self.prg["width"].value = self.fbo.size[0]
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ctx.viewport = (0, 0, self.fbo.size[0], self.fbo.size[1])
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self.fbo.use()
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self.vao.render(mode=moderngl.TRIANGLE_STRIP)
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class RawWebGLAllocator(Allocator):
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def _alloc_image(self, dtype:ImageDType):
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tex = ctx.texture(dtype.shape, 1, dtype=dtype_map[dtype.base])
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tex.filter = (moderngl.NEAREST, moderngl.NEAREST)
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return tex
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def copyin(self, dest:moderngl.Texture, src: memoryview): dest.write(src)
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def copyout(self, dest:memoryview, src: moderngl.Texture):
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src.read_into(dest)
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return dest
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class WebGlDevice(Compiled):
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def __init__(self, device:str):
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super().__init__(RawWebGLAllocator(),
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CompilerOptions(device="WEBGL", global_max=[4096*4096,1,1], unsupported_opts=[OptOps.UPCAST, OptOps.UPCASTMID],
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supports_float4=False, supports_float4_alu=False, has_local=False, has_shared=False, dont_use_locals=True),
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functools.partial(uops_to_cstyle, GLSLLanguage()), lambda x: x, WebGLProgram)
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