128 lines
4.7 KiB
Lua
128 lines
4.7 KiB
Lua
local mesh
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local rotation
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local texture
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local ffi = require 'ffi'
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local _math = require '_math'
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local mat4 = _math.mat4
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local vec3 = _math.vec3
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local pixelcode = [[
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#pragma language glsl3
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varying vec4 PixelNormal;
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varying vec4 PixelTexture;
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uniform sampler2D texture_sampler;
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out vec4 outData;
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void pixelmain()
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{
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vec4 texColor = texture(texture_sampler, PixelTexture.xy);
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float intensity = min(max(dot(vec3(1, 1, 1), PixelNormal.xyz), 0), 1);
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outData = vec4(texColor.xyz * (0.1 + intensity * intensity), 1.0);
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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 VertexNormal;
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layout (location = 2) in vec4 VertexTexture;
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uniform mat4 projection;
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uniform mat4 view;
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uniform mat4 model;
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uniform mat4 model2;
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varying vec4 PixelNormal;
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varying vec4 PixelTexture;
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void vertexmain()
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{
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PixelNormal = VertexNormal * 0.5 + 0.5;
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PixelTexture = VertexTexture;
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mat4 trans = projection * view * model * model2;
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love_Position = trans * vec4(VertexPosition.xyz, 1);
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}
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]]
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local 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 = 'VertexNormal', format = 'floatvec3', location = 1 },
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{ name = 'VertexTexture', format = 'floatvec3', location = 2 },
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}
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function love.load(args)
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love.window.setMode(1024, 1024, {depth=true})
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local vertexdata = love.filesystem.newFileData("position_normal_texture.vtx")
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local indexdata = love.filesystem.newFileData("index.idx")
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local vertexbuffer = love.graphics.newBuffer(vertexformat, vertexdata, { vertex = true, usage = "static" })
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local indexbuffer = love.graphics.newBuffer("uint32", indexdata, { index = 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 = "VertexNormal", -- 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 = 2,
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name = "VertexTexture", -- 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:setIndexBuffer(indexbuffer)
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local image_data = love.image.newCompressedData('bird.dds')
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texture = love.graphics.newTexture(image_data)
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end
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local rotation = 0.0
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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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width, height = love.graphics.getDimensions()
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shader:send("projection", "column", mat4.perspective_rh(width / width * 0.25,
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height / width * 0.25,
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0.1,
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1000.0).data)
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shader:send("view", "column", mat4.look_at_rh(vec3(0, -2, 0),
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vec3(0, 0, 0),
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vec3(0, 0, 1)).data)
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shader:send("model", "column", mat4.rotation_x(rotation).data)
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shader:send("model2", "column", mat4.rotation_z(rotation * 0.5).data)
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shader:send("texture_sampler", texture)
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rotation = rotation + 0.01
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love.graphics.setShader(shader)
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love.graphics.setDepthMode("less", true)
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love.graphics.draw(mesh, mx, my, 0, radius, radius)
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end
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