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main: color attribute

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This commit is contained in:
Zack Buhman 2026-02-21 23:02:04 +00:00
parent 0a423f850d
commit 50b784e6ab
1 changed files with 20 additions and 10 deletions
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26
main.lua
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@ -3,13 +3,13 @@ local mesh
local pixelcode = [[ local pixelcode = [[
#pragma language glsl3 #pragma language glsl3
varying vec4 vpos; varying vec4 PixelColor;
out vec4 outData; out vec4 outData;
void pixelmain() void pixelmain()
{ {
outData = vpos; outData = PixelColor;
} }
]] ]]
@ -17,12 +17,13 @@ local vertexcode = [[
#pragma language glsl3 #pragma language glsl3
layout (location = 0) in vec4 VertexPosition; layout (location = 0) in vec4 VertexPosition;
layout (location = 1) in vec4 VertexColor;
varying vec4 vpos; varying vec4 PixelColor;
void vertexmain() void vertexmain()
{ {
vpos = VertexPosition; PixelColor = VertexColor;
love_Position = TransformProjectionMatrix * VertexPosition; love_Position = TransformProjectionMatrix * VertexPosition;
} }
]] ]]
@ -31,13 +32,14 @@ shader = love.graphics.newShader(pixelcode, vertexcode)
local vertexformat = { local vertexformat = {
{ name = 'VertexPosition', format = 'floatvec3', location = 0 }, { name = 'VertexPosition', format = 'floatvec3', location = 0 },
{ name = 'VertexColor', format = 'floatvec3', location = 1 },
} }
local vertexdata = { local vertexdata = {
{-0.5, -0.5, -0.5}, -- tl \| {-0.5, -0.5, -0.5, 1, 0, 0}, -- tl \|
{ 0.5, -0.5, -0.5}, -- tr { 0.5, -0.5, -0.5, 0, 1, 0}, -- tr
{ 0.5, 0.5, -0.5}, -- br { 0.5, 0.5, -0.5, 0, 0, 1}, -- br
{ -0.5, 0.5, -0.5}, -- bl |\ { -0.5, 0.5, -0.5, 1, 1, 1}, -- bl |\
} }
function love.load(args) function love.load(args)
@ -52,6 +54,14 @@ function love.load(args)
step = "pervertex", -- vertex attribute step ("pervertex" or "perinstance"), defaults to "pervertex". step = "pervertex", -- vertex attribute step ("pervertex" or "perinstance"), defaults to "pervertex".
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. 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.
}, },
{
buffer = vertexbuffer,
location = 1,
name = "VertexColor", -- the name this vertex attribute will use in a shader
nameinbuffer = nil, -- the name of the attribute in the vertex buffer. Defaults to the name field.
step = "pervertex", -- vertex attribute step ("pervertex" or "perinstance"), defaults to "pervertex".
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.
},
} }
drawmode = "triangles" drawmode = "triangles"