1 files changed, 57 insertions, 0 deletions
diff --git a/src/shader.odin b/src/shader.odin
new file mode 100644
index 0000000..cfee01f
--- /dev/null
+++ b/src/shader.odin
@@ -0,0 +1,57 @@
+package funhalla
+
+import "core:math/linalg"
+import "core:strings"
+import gl "vendor:OpenGL"
+
+Shader :: struct {
+	id: u32,
+}
+
+SHADER_LOAD_ERROR :: -1
+SHADER_OK :: 0
+
+shader_init :: proc(vsp, fsp: string) -> (^Shader, int) {
+	program_id, ok := gl.load_shaders_file(vsp, fsp)
+
+	if !ok {
+		return nil, SHADER_LOAD_ERROR
+	}
+
+	shader := new(Shader)
+	shader.id = program_id
+
+	return shader, SHADER_OK
+}
+
+shader_use :: proc(using shader: ^Shader) {
+	gl.UseProgram(id)
+}
+
+shader_set_bool :: proc(using shader: ^Shader, name: cstring, value: bool) {
+	gl.Uniform1i(gl.GetUniformLocation(id, name), i32(value))
+}
+
+shader_set_i32 :: proc(using shader: ^Shader, name: cstring, value: i32) {
+	gl.Uniform1i(gl.GetUniformLocation(id, name), value)
+}
+
+shader_set_f32 :: proc(using shader: ^Shader, name: cstring, value: f32) {
+	gl.Uniform1f(gl.GetUniformLocation(id, name), value)
+}
+
+shader_set_vec3 :: proc(using shader: ^Shader, name: cstring, value: ^Vec3) {
+	gl.Uniform3fv(gl.GetUniformLocation(id, name), 1, &value[0])
+}
+
+shader_set_mat4 :: proc(using shader: ^Shader, name: cstring, value: ^Mat4) {
+	gl.UniformMatrix4fv(gl.GetUniformLocation(id, name), 1, gl.FALSE, &value[0][0])
+}
+
+shader_set_value :: proc {
+	shader_set_i32,
+	shader_set_f32,
+	shader_set_vec3,
+	shader_set_mat4,
+	shader_set_bool,
+}