def __init__(self, plus):
renderer = plus.GetRenderer()
# create primitive index buffer
data = hg.BinaryData()
data.WriteInt16s([0, 1, 2, 0, 2, 3])
self.indices = renderer.NewBuffer()
renderer.CreateBuffer(self.indices, data, hg.GpuBufferIndex)
# create primitive vertex buffer
self.vertex_layout = hg.VertexLayout()
self.vertex_layout.AddAttribute(hg.VertexPosition, 3, hg.VertexFloat)
self.vertex_layout.AddAttribute(
hg.VertexUV0, 2, hg.VertexUByte, True
) # UVs are sent as normalized 8 bit unsigned integer (range [0;255])
data = hg.BinaryData()
x, y = 1, 1
data.WriteFloats([-x, -y, 0])
data.WriteUInt8s([0, 0])
data.WriteFloats([-x, y, 0])
data.WriteUInt8s([0, 255])
data.WriteFloats([x, y, 0])
data.WriteUInt8s([255, 255])
data.WriteFloats([x, -y, 0])
data.WriteUInt8s([255, 0])
self.vertex = renderer.NewBuffer()
renderer.CreateBuffer(self.vertex, data, hg.GpuBufferVertex)
def setup():
global uvdens_tex, uvdens_render_target, uvdens_tex_prev, uvdens_render_target_prev
global idx, vtx, vtx_layout
global shader, shader_set_inputs, shader_add_sources, shader_draw_uvdens, shader_lin_solve, shader_advect, shader_projectA, shader_projectB
renderer = plus.GetRenderer()
# create the 2 render target
def create_tex_and_render_target():
tex = renderer.NewTexture()
pic = hg.Picture(size, size, hg.PictureRGBAF)
renderer.CreateTexture(
tex, pic, hg.TextureIsRenderTarget | hg.TextureIsShaderResource)
render_target = renderer.NewRenderTarget()
renderer.CreateRenderTarget(render_target)
renderer.SetRenderTargetColorTexture(render_target, tex)
return tex, render_target
uvdens_tex, uvdens_render_target = create_tex_and_render_target()
uvdens_tex_prev, uvdens_render_target_prev = create_tex_and_render_target()
# Create index buffer
data = hg.BinaryData()
data.WriteInt16s([0, 1, 2, 0, 2, 3])
idx = renderer.NewBuffer()
renderer.CreateBuffer(idx, data, hg.GpuBufferIndex)
# Create vertex buffer
vtx_layout = hg.VertexLayout()
vtx_layout.AddAttribute(hg.VertexPosition, 3, hg.VertexFloat)
vtx_layout.AddAttribute(hg.VertexUV0, 2, hg.VertexUByte)
data = hg.BinaryData()
x, y = 1, 1
data.WriteFloats([-x, -y, 0.5])
data.WriteUInt8s([0, 0])
data.WriteFloats([-x, y, 0.5])
data.WriteUInt8s([0, 1])
data.WriteFloats([x, y, 0.5])
data.WriteUInt8s([1, 1])
data.WriteFloats([x, -y, 0.5])
data.WriteUInt8s([1, 0])
vtx = renderer.NewBuffer()
renderer.CreateBuffer(vtx, data, hg.GpuBufferVertex)
# Load shader.
shader = renderer.LoadShader("@assets/vel.isl")
shader_set_inputs = renderer.LoadShader("@assets/set_inputs.isl")
shader_add_sources = renderer.LoadShader("@assets/add_source.isl")
shader_draw_uvdens = renderer.LoadShader("@assets/draw_uvdens.isl")
shader_lin_solve = renderer.LoadShader("@assets/lin_solve.isl")
shader_advect = renderer.LoadShader("@assets/advect.isl")
shader_projectA = renderer.LoadShader("@assets/projectA.isl")
shader_projectB = renderer.LoadShader("@assets/projectB.isl")
surface = renderer.NewOutputSurface(win)
renderer.SetOutputSurface(surface)
# load 2d shader and retrieve variables
shader_color = renderer.LoadShader("_data/shader_2d_color.isl")
shader_texture = renderer.LoadShader("_data/shader_2d_single_texture.isl")
# create primitive index buffer
data = hg.BinaryData()
data.WriteUInt16s([0, 1, 2])
idx = renderer.NewBuffer()
renderer.CreateBuffer(idx, data, hg.GpuBufferIndex)
# create primitive vertex buffer
vtx_layout = hg.VertexLayout()
vtx_layout.AddAttribute(hg.VertexPosition, 3, hg.VertexFloat)
vtx_layout.AddAttribute(
hg.VertexUV0, 2, hg.VertexUByte,
True) # UVs are sent as normalized 8 bit unsigned integer (range [0;255])
data = hg.BinaryData()
x, y = 0.5, 0.5
data.WriteFloats([-x, -y, 0.5])
data.WriteUInt8s([127, 0])
data.WriteFloats([-x, y, 0.5])
data.WriteUInt8s([0, 127])
data.WriteFloats([x, y, 0.5])