81 lines
2.4 KiB
Lua
81 lines
2.4 KiB
Lua
local mesh
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local pixelcode = [[
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#pragma language glsl3
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varying vec4 PixelColor;
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out vec4 outData;
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void pixelmain()
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{
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outData = PixelColor;
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}
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]]
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local vertexcode = [[
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#pragma language glsl3
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layout (location = 0) in vec4 VertexPosition;
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layout (location = 1) in vec4 VertexColor;
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varying vec4 PixelColor;
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void vertexmain()
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{
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PixelColor = VertexColor;
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love_Position = TransformProjectionMatrix * VertexPosition;
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}
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]]
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shader = love.graphics.newShader(pixelcode, vertexcode)
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local vertexformat = {
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{ name = 'VertexPosition', format = 'floatvec3', location = 0 },
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{ name = 'VertexColor', format = 'floatvec3', location = 1 },
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}
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local vertexdata = {
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{-0.5, -0.5, -0.5, 1, 0, 0}, -- tl \|
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{ 0.5, -0.5, -0.5, 0, 1, 0}, -- tr
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{ 0.5, 0.5, -0.5, 0, 0, 1}, -- br
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{ -0.5, 0.5, -0.5, 1, 1, 1}, -- bl |\
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}
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function love.load(args)
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local vertexbuffer = love.graphics.newBuffer(vertexformat, vertexdata, { vertex = true, usage = "static" })
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attributelist = {
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{
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buffer = vertexbuffer,
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location = 0,
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name = "VertexPosition", -- the name this vertex attribute will use in a shader
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nameinbuffer = nil, -- the name of the attribute in the vertex buffer. Defaults to the name field.
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step = "pervertex", -- vertex attribute step ("pervertex" or "perinstance"), defaults to "pervertex".
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startindex = 1, -- 1-based array index within the given vertex buffer where the attribute data will start being pulled from during rendering. Defaults to 1.
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},
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{
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buffer = vertexbuffer,
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location = 1,
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name = "VertexColor", -- the name this vertex attribute will use in a shader
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nameinbuffer = nil, -- the name of the attribute in the vertex buffer. Defaults to the name field.
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step = "pervertex", -- vertex attribute step ("pervertex" or "perinstance"), defaults to "pervertex".
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startindex = 1, -- 1-based array index within the given vertex buffer where the attribute data will start being pulled from during rendering. Defaults to 1.
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},
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}
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drawmode = "triangles"
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mesh = love.graphics.newMesh(attributelist, drawmode)
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mesh:setVertexMap(1, 2, 3,
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1, 4, 3)
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end
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function love.draw()
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local radius = 100
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local mx, my = love.mouse.getPosition()
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love.graphics.setShader(shader)
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love.graphics.draw(mesh, mx, my, 0, radius, radius)
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end
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