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use std::mem;
use std::mem::size_of;
use std::os::raw::{c_char, c_int, c_void};
use std::ptr;
use std::rc::Rc;
use std::str;
use std::iter::repeat;
use std::ffi::{CString, CStr};
use ffi;
pub use ffi::types::*;
pub use ffi::*;
pub use ffi_gl::Gl as GlFfi;
pub use ffi_gles::Gles2 as GlesFfi;
#[derive(Debug, Eq, PartialEq)]
pub enum GlType {
Gl,
Gles,
}
impl Default for GlType {
#[cfg(any(target_os="android", target_os="ios"))]
fn default() -> GlType {
GlType::Gles
}
#[cfg(not(any(target_os="android", target_os="ios")))]
fn default() -> GlType {
GlType::Gl
}
}
fn calculate_length(width: GLsizei, height: GLsizei, format: GLenum, pixel_type: GLenum) -> usize {
let colors = match format {
ffi::RGB => 3,
ffi::BGR => 3,
ffi::RGBA => 4,
ffi::BGRA => 4,
ffi::ALPHA => 1,
ffi::LUMINANCE => 1,
ffi::DEPTH_COMPONENT => 1,
_ => panic!("unsupported format for read_pixels"),
};
let depth = match pixel_type {
ffi::UNSIGNED_BYTE => 1,
ffi::FLOAT=> 4,
_ => panic!("unsupported pixel_type for read_pixels"),
};
return (width * height * colors * depth) as usize;
}
pub trait Gl {
fn get_type(&self) -> GlType;
fn buffer_data_untyped(&self,
target: GLenum,
size: GLsizeiptr,
data: *const GLvoid,
usage: GLenum);
fn buffer_sub_data_untyped(&self,
target: GLenum,
offset: isize,
size: GLsizeiptr,
data: *const GLvoid);
fn tex_buffer(&self, target: GLenum, internal_format: GLenum, buffer: GLuint);
fn shader_source(&self, shader: GLuint, strings: &[&[u8]]);
fn read_buffer(&self, mode: GLenum);
fn read_pixels_into_buffer(&self,
x: GLint,
y: GLint,
width: GLsizei,
height: GLsizei,
format: GLenum,
pixel_type: GLenum,
dst_buffer: &mut [u8]);
fn read_pixels(&self,
x: GLint,
y: GLint,
width: GLsizei,
height: GLsizei,
format: GLenum,
pixel_type: GLenum)
-> Vec<u8>;
fn sample_coverage(&self, value: GLclampf, invert: bool);
fn polygon_offset(&self, factor: GLfloat, units: GLfloat);
fn pixel_store_i(&self, name: GLenum, param: GLint);
fn gen_buffers(&self, n: GLsizei) -> Vec<GLuint>;
fn gen_renderbuffers(&self, n: GLsizei) -> Vec<GLuint>;
fn gen_framebuffers(&self, n: GLsizei) -> Vec<GLuint>;
fn gen_textures(&self, n: GLsizei) -> Vec<GLuint>;
fn gen_vertex_arrays(&self, n: GLsizei) -> Vec<GLuint>;
fn gen_queries(&self, n: GLsizei) -> Vec<GLuint>;
fn begin_query(&self, target: GLenum, id: GLuint);
fn end_query(&self, target: GLenum);
fn query_counter(&self, id: GLuint, target: GLenum);
fn get_query_object_iv(&self, id: GLuint, pname: GLenum) -> i32;
fn get_query_object_uiv(&self, id: GLuint, pname: GLenum) -> u32;
fn get_query_object_i64v(&self, id: GLuint, pname: GLenum) -> i64;
fn get_query_object_ui64v(&self, id: GLuint, pname: GLenum) -> u64;
fn delete_queries(&self, queries: &[GLuint]);
fn delete_vertex_arrays(&self, vertex_arrays: &[GLuint]);
fn delete_buffers(&self, buffers: &[GLuint]);
fn delete_renderbuffers(&self, renderbuffers: &[GLuint]);
fn delete_framebuffers(&self, framebuffers: &[GLuint]);
fn delete_textures(&self, textures: &[GLuint]);
fn framebuffer_renderbuffer(&self,
target: GLenum,
attachment: GLenum,
renderbuffertarget: GLenum,
renderbuffer: GLuint);
fn renderbuffer_storage(&self,
target: GLenum,
internalformat: GLenum,
width: GLsizei,
height: GLsizei);
fn depth_func(&self, func: GLenum);
fn active_texture(&self, texture: GLenum);
fn attach_shader(&self, program: GLuint, shader: GLuint);
fn bind_attrib_location(&self, program: GLuint, index: GLuint, name: &str);
fn get_uniform_block_index(&self, program: GLuint, name: &str) -> GLuint;
fn get_uniform_indices(&self, program: GLuint, names: &[&str]) -> Vec<GLuint>;
fn bind_buffer_base(&self, target: GLenum, index: GLuint, buffer: GLuint);
fn bind_buffer_range(&self, target: GLenum, index: GLuint, buffer: GLuint, offset: GLintptr, size: GLsizeiptr);
fn uniform_block_binding(&self,
program: GLuint,
uniform_block_index: GLuint,
uniform_block_binding: GLuint);
fn bind_buffer(&self, target: GLenum, buffer: GLuint);
fn bind_vertex_array(&self, vao: GLuint);
fn bind_renderbuffer(&self, target: GLenum, renderbuffer: GLuint);
fn bind_framebuffer(&self, target: GLenum, framebuffer: GLuint);
fn bind_texture(&self, target: GLenum, texture: GLuint);
fn tex_image_2d(&self,
target: GLenum,
level: GLint,
internal_format: GLint,
width: GLsizei,
height: GLsizei,
border: GLint,
format: GLenum,
ty: GLenum,
opt_data: Option<&[u8]>);
fn compressed_tex_image_2d(&self,
target: GLenum,
level: GLint,
internal_format: GLenum,
width: GLsizei,
height: GLsizei,
border: GLint,
data: &[u8]);
fn compressed_tex_sub_image_2d(&self,
target: GLenum,
level: GLint,
xoffset: GLint,
yoffset: GLint,
width: GLsizei,
height: GLsizei,
format: GLenum,
data: &[u8]);
fn tex_image_3d(&self,
target: GLenum,
level: GLint,
internal_format: GLint,
width: GLsizei,
height: GLsizei,
depth: GLsizei,
border: GLint,
format: GLenum,
ty: GLenum,
opt_data: Option<&[u8]>);
fn copy_tex_image_2d(&self,
target: GLenum,
level: GLint,
internal_format: GLenum,
x: GLint,
y: GLint,
width: GLsizei,
height: GLsizei,
border: GLint);
fn copy_tex_sub_image_2d(&self,
target: GLenum,
level: GLint,
xoffset: GLint,
yoffset: GLint,
x: GLint,
y: GLint,
width: GLsizei,
height: GLsizei);
fn copy_tex_sub_image_3d(&self,
target: GLenum,
level: GLint,
xoffset: GLint,
yoffset: GLint,
zoffset: GLint,
x: GLint,
y: GLint,
width: GLsizei,
height: GLsizei);
fn tex_sub_image_2d(&self,
target: GLenum,
level: GLint,
xoffset: GLint,
yoffset: GLint,
width: GLsizei,
height: GLsizei,
format: GLenum,
ty: GLenum,
data: &[u8]);
fn tex_sub_image_2d_pbo(&self,
target: GLenum,
level: GLint,
xoffset: GLint,
yoffset: GLint,
width: GLsizei,
height: GLsizei,
format: GLenum,
ty: GLenum,
offset: usize);
fn tex_sub_image_3d(&self,
target: GLenum,
level: GLint,
xoffset: GLint,
yoffset: GLint,
zoffset: GLint,
width: GLsizei,
height: GLsizei,
depth: GLsizei,
format: GLenum,
ty: GLenum,
data: &[u8]);
fn tex_sub_image_3d_pbo(&self,
target: GLenum,
level: GLint,
xoffset: GLint,
yoffset: GLint,
zoffset: GLint,
width: GLsizei,
height: GLsizei,
depth: GLsizei,
format: GLenum,
ty: GLenum,
offset: usize);
fn get_integer_v(&self, name: GLenum) -> GLint;
fn get_integer_64v(&self, name: GLenum) -> GLint64;
fn get_integer_iv(&self, name: GLenum, index: GLuint) -> GLint;
fn get_integer_64iv(&self, name: GLenum, index: GLuint) -> GLint64;
fn get_boolean_v(&self, name: GLenum) -> GLboolean;
fn get_float_v(&self, name: GLenum) -> GLfloat;
fn tex_parameter_i(&self, target: GLenum, pname: GLenum, param: GLint);
fn tex_parameter_f(&self, target: GLenum, pname: GLenum, param: GLfloat);
fn framebuffer_texture_2d(&self,
target: GLenum,
attachment: GLenum,
textarget: GLenum,
texture: GLuint,
level: GLint);
fn framebuffer_texture_layer(&self,
target: GLenum,
attachment: GLenum,
texture: GLuint,
level: GLint,
layer: GLint);
fn blit_framebuffer(&self,
src_x0: GLint,
src_y0: GLint,
src_x1: GLint,
src_y1: GLint,
dst_x0: GLint,
dst_y0: GLint,
dst_x1: GLint,
dst_y1: GLint,
mask: GLbitfield,
filter: GLenum);
fn vertex_attrib_4f(&self, index: GLuint, x: GLfloat, y: GLfloat, z: GLfloat, w: GLfloat);
fn vertex_attrib_pointer_f32(&self,
index: GLuint,
size: GLint,
normalized: bool,
stride: GLsizei,
offset: GLuint);
fn vertex_attrib_pointer(&self,
index: GLuint,
size: GLint,
type_: GLenum,
normalized: bool,
stride: GLsizei,
offset: GLuint);
fn vertex_attrib_i_pointer(&self,
index: GLuint,
size: GLint,
type_: GLenum,
stride: GLsizei,
offset: GLuint);
fn vertex_attrib_divisor(&self, index: GLuint, divisor: GLuint);
fn viewport(&self, x: GLint, y: GLint, width: GLsizei, height: GLsizei);
fn scissor(&self, x: GLint, y: GLint, width: GLsizei, height: GLsizei);
fn line_width(&self, width: GLfloat);
fn use_program(&self, program: GLuint);
fn validate_program(&self, program: GLuint);
fn draw_arrays(&self, mode: GLenum, first: GLint, count: GLsizei);
fn draw_arrays_instanced(&self,
mode: GLenum,
first: GLint,
count: GLsizei,
primcount: GLsizei);
fn draw_elements(&self,
mode: GLenum,
count: GLsizei,
element_type: GLenum,
indices_offset: GLuint);
fn draw_elements_instanced(&self,
mode: GLenum,
count: GLsizei,
element_type: GLenum,
indices_offset: GLuint,
primcount: GLsizei);
fn blend_color(&self, r: f32, g: f32, b: f32, a: f32);
fn blend_func(&self, sfactor: GLenum, dfactor: GLenum);
fn blend_func_separate(&self,
src_rgb: GLenum,
dest_rgb: GLenum,
src_alpha: GLenum,
dest_alpha: GLenum);
fn blend_equation(&self, mode: GLenum);
fn blend_equation_separate(&self, mode_rgb: GLenum, mode_alpha: GLenum);
fn color_mask(&self, r: bool, g: bool, b: bool, a: bool);
fn cull_face(&self, mode: GLenum);
fn front_face(&self, mode: GLenum);
fn enable(&self, cap: GLenum);
fn disable(&self, cap: GLenum);
fn hint(&self, param_name: GLenum, param_val: GLenum);
fn is_enabled(&self, cap: GLenum) -> GLboolean;
fn is_shader(&self, shader: GLuint) -> GLboolean;
fn is_texture(&self, texture: GLenum) -> GLboolean;
fn is_framebuffer(&self, framebuffer: GLenum) -> GLboolean;
fn is_renderbuffer(&self, renderbuffer: GLenum) -> GLboolean;
fn check_frame_buffer_status(&self, target: GLenum) -> GLenum;
fn enable_vertex_attrib_array(&self, index: GLuint);
fn disable_vertex_attrib_array(&self, index: GLuint);
fn uniform_1f(&self, location: GLint, v0: GLfloat);
fn uniform_1fv(&self, location: GLint, values: &[f32]);
fn uniform_1i(&self, location: GLint, v0: GLint);
fn uniform_1iv(&self, location: GLint, values: &[i32]);
fn uniform_1ui(&self, location: GLint, v0: GLuint);
fn uniform_2f(&self, location: GLint, v0: GLfloat, v1: GLfloat);
fn uniform_2fv(&self, location: GLint, values: &[f32]);
fn uniform_2i(&self, location: GLint, v0: GLint, v1: GLint);
fn uniform_2iv(&self, location: GLint, values: &[i32]);
fn uniform_2ui(&self, location: GLint, v0: GLuint, v1: GLuint);
fn uniform_3f(&self, location: GLint, v0: GLfloat, v1: GLfloat, v2: GLfloat);
fn uniform_3fv(&self, location: GLint, values: &[f32]);
fn uniform_3i(&self, location: GLint, v0: GLint, v1: GLint, v2: GLint);
fn uniform_3iv(&self, location: GLint, values: &[i32]);
fn uniform_3ui(&self, location: GLint, v0: GLuint, v1: GLuint, v2: GLuint);
fn uniform_4f(&self, location: GLint, x: GLfloat, y: GLfloat, z: GLfloat, w: GLfloat);
fn uniform_4i(&self, location: GLint, x: GLint, y: GLint, z: GLint, w: GLint);
fn uniform_4iv(&self, location: GLint, values: &[i32]);
fn uniform_4ui(&self, location: GLint, x: GLuint, y: GLuint, z: GLuint, w: GLuint);
fn uniform_4fv(&self, location: GLint, values: &[f32]);
fn uniform_matrix_2fv(&self, location: GLint, transpose: bool, value: &[f32]);
fn uniform_matrix_3fv(&self, location: GLint, transpose: bool, value: &[f32]);
fn uniform_matrix_4fv(&self, location: GLint, transpose: bool, value: &[f32]);
fn depth_mask(&self, flag: bool);
fn depth_range(&self, near: f64, far: f64);
fn get_active_attrib(&self, program: GLuint, index: GLuint) -> (i32, u32, String);
fn get_active_uniform(&self, program: GLuint, index: GLuint) -> (i32, u32, String);
fn get_active_uniforms_iv(&self, program: GLuint, indices: Vec<GLuint>, pname: GLenum) -> Vec<GLint>;
fn get_active_uniform_block_i(&self, program: GLuint, index: GLuint, pname: GLenum) -> GLint;
fn get_active_uniform_block_iv(&self, program: GLuint, index: GLuint, pname: GLenum) -> Vec<GLint>;
fn get_active_uniform_block_name(&self, program: GLuint, index: GLuint) -> String;
fn get_attrib_location(&self, program: GLuint, name: &str) -> c_int;
fn get_frag_data_location(&self, program: GLuint, name: &str) -> c_int;
fn get_uniform_location(&self, program: GLuint, name: &str) -> c_int;
fn get_program_info_log(&self, program: GLuint) -> String;
fn get_program_iv(&self, program: GLuint, pname: GLenum) -> GLint;
fn get_program_binary(&self, program: GLuint) -> (Vec<u8>, GLenum);
fn program_binary(&self, program: GLuint, format: GLenum, binary: &[u8]);
fn program_parameter_i(&self, program: GLuint, pname: GLenum, value: GLint);
fn get_vertex_attrib_iv(&self, index: GLuint, pname: GLenum) -> GLint;
fn get_vertex_attrib_fv(&self, index: GLuint, pname: GLenum) -> Vec<GLfloat>;
fn get_vertex_attrib_pointer_v(&self, index: GLuint, pname: GLenum) -> GLsizeiptr;
fn get_buffer_parameter_iv(&self, target: GLuint, pname: GLenum) -> GLint;
fn get_shader_info_log(&self, shader: GLuint) -> String;
fn get_string(&self, which: GLenum) -> String;
fn get_string_i(&self, which: GLenum, index: GLuint) -> String;
fn get_shader_iv(&self, shader: GLuint, pname: GLenum) -> GLint;
fn get_shader_precision_format(&self,
shader_type: GLuint,
precision_type: GLuint)
-> (GLint, GLint, GLint);
fn compile_shader(&self, shader: GLuint);
fn create_program(&self) -> GLuint;
fn delete_program(&self, program: GLuint);
fn create_shader(&self, shader_type: GLenum) -> GLuint;
fn delete_shader(&self, shader: GLuint);
fn detach_shader(&self, program: GLuint, shader: GLuint);
fn link_program(&self, program: GLuint);
fn clear_color(&self, r: f32, g: f32, b: f32, a: f32);
fn clear(&self, buffer_mask: GLbitfield);
fn clear_depth(&self, depth: f64);
fn clear_stencil(&self, s: GLint);
fn flush(&self);
fn finish(&self);
fn get_error(&self) -> GLenum;
fn stencil_mask(&self, mask: GLuint);
fn stencil_mask_separate(&self, face: GLenum, mask: GLuint);
fn stencil_func(&self, func: GLenum, ref_: GLint, mask: GLuint);
fn stencil_func_separate(&self, face: GLenum, func: GLenum, ref_: GLint, mask: GLuint);
fn stencil_op(&self, sfail: GLenum, dpfail: GLenum, dppass: GLenum);
fn stencil_op_separate(&self, face: GLenum, sfail: GLenum, dpfail: GLenum, dppass: GLenum);
fn egl_image_target_texture2d_oes(&self, target: GLenum, image: GLeglImageOES);
fn generate_mipmap(&self, target: GLenum);
fn insert_event_marker_ext(&self, message: &str);
fn push_group_marker_ext(&self, message: &str);
fn pop_group_marker_ext(&self);
fn fence_sync(&self, condition: GLenum, flags: GLbitfield) -> GLsync;
fn client_wait_sync(&self, sync: GLsync, flags: GLbitfield, timeout: GLuint64);
fn wait_sync(&self, sync: GLsync, flags: GLbitfield, timeout: GLuint64);
fn delete_sync(&self, sync: GLsync);
}
#[inline]
pub fn buffer_data<T>(gl_: &Gl, target: GLenum, data: &[T], usage: GLenum) {
gl_.buffer_data_untyped(target,
(data.len() * size_of::<T>()) as GLsizeiptr,
data.as_ptr() as *const GLvoid,
usage)
}
#[inline]
pub fn buffer_data_raw<T>(gl_: &Gl, target: GLenum, data: &T, usage: GLenum) {
gl_.buffer_data_untyped(target,
size_of::<T>() as GLsizeiptr,
data as *const T as *const GLvoid,
usage)
}
#[inline]
pub fn buffer_sub_data<T>(gl_: &Gl, target: GLenum, offset: isize, data: &[T]) {
gl_.buffer_sub_data_untyped(target,
offset,
(data.len() * size_of::<T>()) as GLsizeiptr,
data.as_ptr() as *const GLvoid);
}
include!("gl_fns.rs");
include!("gles_fns.rs");