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Diffstat (limited to '')
-rw-r--r-- | src/shader/shader.odin | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/shader/shader.odin b/src/shader/shader.odin new file mode 100644 index 0000000..171d7ad --- /dev/null +++ b/src/shader/shader.odin @@ -0,0 +1,50 @@ +package shader + +import "core:os" +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) { + assert(os.is_file_path(vsp)) + assert(os.is_file_path(fsp)) + + 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 +} + +use :: proc(using shader: ^Shader) { + gl.UseProgram(id) +} + +set_bool :: proc(using shader: ^Shader, name: cstring, value: bool) { + gl.Uniform1i(gl.GetUniformLocation(id, name), i32(value)) +} + +set_i32 :: proc(using shader: ^Shader, name: cstring, value: i32) { + gl.Uniform1i(gl.GetUniformLocation(id, name), value) +} + +set_f32 :: proc(using shader: ^Shader, name: cstring, value: f32) { + gl.Uniform1f(gl.GetUniformLocation(id, name), value) +} + +set_value :: proc { + set_i32, + set_f32, + set_bool, +} |