36 lines
1.2 KiB
Lua
36 lines
1.2 KiB
Lua
local atlas = nil
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local shader = nil
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local GLSL_VERSION = "330" -- PLATFORM_DESKTOP
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function RL.init()
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RL.SetWindowTitle( "Texture atlas repeat shader" )
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RL.SetWindowState( RL.FLAG_VSYNC_HINT )
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local path = RL.GetBasePath().."../resources/"
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local shaderPath = path.."/shaders/glsl"..GLSL_VERSION.."/"
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shader = RL.LoadShader( shaderPath.."base.vs", shaderPath.."atlas_repeat.fs" )
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atlas = RL.LoadTexture( path.."images/tiles.png" )
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local loc = RL.GetShaderLocation( shader, "atlasSize" )
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RL.SetShaderValue( shader, loc, RL.GetTextureSize( atlas ), RL.SHADER_UNIFORM_VEC2 )
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loc = RL.GetShaderLocation( shader, "tileTexSize" )
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RL.SetShaderValue( shader, loc, { 32, 32 }, RL.SHADER_UNIFORM_VEC2 )
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-- Set texture for DrawTriangle.
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RL.SetShapesTexture( atlas, { 32 * 4, 0, 32, 32 } )
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end
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function RL.update( delta )
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end
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function RL.draw()
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RL.ClearBackground( RL.RAYWHITE )
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RL.BeginShaderMode( shader )
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RL.DrawTexturePro( atlas, { 0, 0, 32, 32 }, { 0, 0, 64, 64 }, { 0.0 }, 0.0, RL.WHITE )
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RL.DrawTexturePro( atlas, { 32, 0, 32, 32 }, { 0, 64, 128, 64 }, { 0.0 }, 0.0, RL.WHITE )
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RL.DrawTriangle( { 32, 200 }, { 128, 400 }, { 320, 240 }, RL.WHITE )
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RL.EndShaderMode()
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end
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