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Diffstat (limited to 'src/shader_shim.moon')
| -rw-r--r-- | src/shader_shim.moon | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/shader_shim.moon b/src/shader_shim.moon new file mode 100644 index 0000000..76e0aec --- /dev/null +++ b/src/shader_shim.moon @@ -0,0 +1,22 @@ +-- Sometimes we want to compile shaders, use the syntax +-- {variable} to adress a variable +win = require("window") +inputs = { + "@width": win.width + "@height": win.height +} + +shaders = setmetatable({},{ + __index:(self, key) -> + vert_name = "shaders/" .. key .. ".vert" + frag_name = "shaders/" .. key .. ".frag" + vert = assert(am.load_string(vert_name), "Failed to find " .. vert_name) + frag = assert(am.load_string(frag_name), "Failed to find " .. frag_name) + vert_subbed = vert\gsub("@%b{}",(n) -> tostring(inputs[n])) + frag_subbed = frag\gsub("@%b{}",(n) -> tostring(inputs[n])) + succ, program = pcall(am.program, vert_subbed, frag_subbed) + if not succ + error(string.format("Failed compiling shader %q: %s vertex shader: %s fragment shader: %s", key, program, vert_subbed, frag_subbed)) + am.use_program(am.program(vert_subbed, frag_subbed)) +}) +shaders |