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web_sys.rs
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web_sys.rs
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use super::*;
use js_sys::{self, Array};
use slotmap::{new_key_type, SlotMap};
use std::cell::RefCell;
use web_sys::{
self, HtmlCanvasElement, HtmlImageElement, ImageBitmap, WebGl2RenderingContext, WebGlBuffer,
WebGlFramebuffer, WebGlProgram, WebGlQuery, WebGlRenderbuffer, WebGlRenderingContext,
WebGlSampler, WebGlShader, WebGlSync, WebGlTexture, WebGlTransformFeedback,
WebGlUniformLocation, WebGlVertexArrayObject,
};
#[derive(Debug)]
enum RawRenderingContext {
WebGl1(WebGlRenderingContext),
WebGl2(WebGl2RenderingContext),
}
#[derive(Debug)]
struct Extensions {
pub angle_instanced_arrays: Option<web_sys::AngleInstancedArrays>,
pub ext_blend_minmax: Option<web_sys::ExtBlendMinmax>,
pub ext_color_buffer_float: Option<web_sys::ExtColorBufferFloat>,
pub ext_color_buffer_half_float: Option<web_sys::ExtColorBufferHalfFloat>,
pub ext_disjoint_timer_query: Option<web_sys::ExtDisjointTimerQuery>,
pub ext_disjoint_timer_query_webgl2: Option<()>,
pub ext_float_blend: Option<()>,
pub ext_frag_depth: Option<web_sys::ExtFragDepth>,
pub ext_shader_texture_lod: Option<web_sys::ExtShaderTextureLod>,
pub ext_srgb: Option<web_sys::ExtSRgb>,
pub ext_texture_compression_bptc: Option<()>,
pub ext_texture_compression_rgtc: Option<()>,
pub ext_texture_filter_anisotropic: Option<web_sys::ExtTextureFilterAnisotropic>,
pub khr_parallel_shader_compile: Option<()>,
pub oes_element_index_uint: Option<web_sys::OesElementIndexUint>,
pub oes_fbo_render_mipmap: Option<()>,
pub oes_standard_derivatives: Option<web_sys::OesStandardDerivatives>,
pub oes_texture_float: Option<web_sys::OesTextureFloat>,
pub oes_texture_float_linear: Option<web_sys::OesTextureFloatLinear>,
pub oes_texture_half_float: Option<web_sys::OesTextureHalfFloat>,
pub oes_texture_half_float_linear: Option<web_sys::OesTextureHalfFloatLinear>,
pub oes_vertex_array_object: Option<web_sys::OesVertexArrayObject>,
pub ovr_multiview2: Option<()>,
pub webgl_color_buffer_float: Option<web_sys::WebglColorBufferFloat>,
pub webgl_compressed_texture_astc: Option<web_sys::WebglCompressedTextureAstc>,
pub webgl_compressed_texture_etc: Option<web_sys::WebglCompressedTextureEtc>,
pub webgl_compressed_texture_etc1: Option<web_sys::WebglCompressedTextureEtc1>,
pub webgl_compressed_texture_pvrtc: Option<web_sys::WebglCompressedTexturePvrtc>,
pub webgl_compressed_texture_s3tc: Option<web_sys::WebglCompressedTextureS3tc>,
pub webgl_compressed_texture_s3tc_srgb: Option<web_sys::WebglCompressedTextureS3tcSrgb>,
pub webgl_debug_renderer_info: Option<web_sys::WebglDebugRendererInfo>,
pub webgl_debug_shaders: Option<web_sys::WebglDebugShaders>,
pub webgl_depth_texture: Option<web_sys::WebglDepthTexture>,
pub webgl_draw_buffers: Option<web_sys::WebglDrawBuffers>,
pub webgl_lose_context: Option<web_sys::WebglLoseContext>,
}
type TrackedResource<K, V> = RefCell<SlotMap<K, V>>;
fn tracked_resource<K: slotmap::Key, V>() -> TrackedResource<K, V> {
RefCell::new(SlotMap::with_key())
}
#[derive(Debug)]
pub struct Context {
raw: RawRenderingContext,
extensions: Extensions,
supported_extensions: HashSet<String>,
shaders: TrackedResource<WebShaderKey, WebGlShader>,
programs: TrackedResource<WebProgramKey, WebGlProgram>,
buffers: TrackedResource<WebBufferKey, WebGlBuffer>,
vertex_arrays: TrackedResource<WebVertexArrayKey, WebGlVertexArrayObject>,
textures: TrackedResource<WebTextureKey, WebGlTexture>,
samplers: TrackedResource<WebSamplerKey, WebGlSampler>,
fences: TrackedResource<WebFenceKey, WebGlSync>,
framebuffers: TrackedResource<WebFramebufferKey, WebGlFramebuffer>,
renderbuffers: TrackedResource<WebRenderbufferKey, WebGlRenderbuffer>,
queries: TrackedResource<WebQueryKey, WebGlQuery>,
transform_feedbacks: TrackedResource<WebTransformFeedbackKey, WebGlTransformFeedback>,
}
// bindgen's gl context don't share an interface so a macro is used to deduplicate a bunch of code here
macro_rules! build_extensions {
($context:ident, $context_type:ty) => {{
fn get_extension<T>(context: &$context_type, name: &str) -> Option<T>
where
T: wasm_bindgen::JsCast,
{
use wasm_bindgen::JsCast;
// `unchecked_into` is used here because WebGL extensions aren't actually JS classes
// these objects are duck-type representations of the actual Rust classes
// https://github.com/rustwasm/wasm-bindgen/pull/1449
context
.get_extension(name)
.ok()
.and_then(|maybe_ext| maybe_ext.map(|ext| ext.unchecked_into::<T>()))
}
fn get_extension_no_object(context: &$context_type, name: &str) -> Option<()> {
context
.get_extension(name)
.ok()
.and_then(|maybe_ext| maybe_ext.map(|_| ()))
}
let extensions = Extensions {
angle_instanced_arrays: get_extension::<web_sys::AngleInstancedArrays>(
&$context,
"ANGLE_instanced_arrays",
),
ext_blend_minmax: get_extension::<web_sys::ExtBlendMinmax>(
&$context,
"EXT_blend_minmax",
),
ext_color_buffer_float: get_extension::<web_sys::ExtColorBufferFloat>(
&$context,
"EXT_color_buffer_float",
),
ext_color_buffer_half_float: get_extension::<web_sys::ExtColorBufferHalfFloat>(
&$context,
"EXT_color_buffer_half_float",
),
ext_disjoint_timer_query: get_extension::<web_sys::ExtDisjointTimerQuery>(
&$context,
"EXT_disjoint_timer_query",
),
ext_disjoint_timer_query_webgl2: get_extension_no_object(
&$context,
"EXT_disjoint_timer_query_webgl2",
),
ext_float_blend: get_extension_no_object(&$context, "EXT_float_blend"),
ext_frag_depth: get_extension::<web_sys::ExtFragDepth>(&$context, "EXT_frag_depth"),
ext_shader_texture_lod: get_extension::<web_sys::ExtShaderTextureLod>(
&$context,
"EXT_shader_texture_lod",
),
ext_srgb: get_extension::<web_sys::ExtSRgb>(&$context, "EXT_sRGB"),
ext_texture_compression_bptc: get_extension_no_object(
&$context,
"EXT_texture_compression_bptc",
),
ext_texture_compression_rgtc: get_extension_no_object(
&$context,
"EXT_texture_compression_rgtc",
),
ext_texture_filter_anisotropic: get_extension::<web_sys::ExtTextureFilterAnisotropic>(
&$context,
"EXT_texture_filter_anisotropic",
),
khr_parallel_shader_compile: get_extension_no_object(
&$context,
"KHR_parallel_shader_compile",
),
oes_element_index_uint: get_extension::<web_sys::OesElementIndexUint>(
&$context,
"OES_element_index_uint",
),
oes_fbo_render_mipmap: get_extension_no_object(&$context, "OES_fbo_render_mipmap"),
oes_standard_derivatives: get_extension::<web_sys::OesStandardDerivatives>(
&$context,
"OES_standard_derivatives",
),
oes_texture_float: get_extension::<web_sys::OesTextureFloat>(
&$context,
"OES_texture_float",
),
oes_texture_float_linear: get_extension::<web_sys::OesTextureFloatLinear>(
&$context,
"OES_texture_float_linear",
),
oes_texture_half_float: get_extension::<web_sys::OesTextureHalfFloat>(
&$context,
"OES_texture_half_float",
),
oes_texture_half_float_linear: get_extension::<web_sys::OesTextureHalfFloatLinear>(
&$context,
"OES_texture_half_float_linear",
),
oes_vertex_array_object: get_extension::<web_sys::OesVertexArrayObject>(
&$context,
"OES_vertex_array_object",
),
ovr_multiview2: get_extension_no_object(&$context, "OVR_multiview2"),
webgl_color_buffer_float: get_extension::<web_sys::WebglColorBufferFloat>(
&$context,
"WEBGL_color_buffer_float",
),
webgl_compressed_texture_astc: get_extension::<web_sys::WebglCompressedTextureAstc>(
&$context,
"WEBGL_compressed_texture_astc",
),
webgl_compressed_texture_etc: get_extension::<web_sys::WebglCompressedTextureEtc>(
&$context,
"WEBGL_compressed_texture_etc",
),
webgl_compressed_texture_etc1: get_extension::<web_sys::WebglCompressedTextureEtc1>(
&$context,
"WEBGL_compressed_texture_etc1",
),
webgl_compressed_texture_pvrtc: get_extension::<web_sys::WebglCompressedTexturePvrtc>(
&$context,
"WEBGL_compressed_texture_pvrtc",
),
webgl_compressed_texture_s3tc: get_extension::<web_sys::WebglCompressedTextureS3tc>(
&$context,
"WEBGL_compressed_texture_s3tc",
),
webgl_compressed_texture_s3tc_srgb: get_extension::<
web_sys::WebglCompressedTextureS3tcSrgb,
>(
&$context, "WEBGL_compressed_texture_s3tc_srgb"
),
webgl_debug_renderer_info: get_extension::<web_sys::WebglDebugRendererInfo>(
&$context,
"WEBGL_debug_renderer_info",
),
webgl_debug_shaders: get_extension::<web_sys::WebglDebugShaders>(
&$context,
"WEBGL_debug_shaders",
),
webgl_depth_texture: get_extension::<web_sys::WebglDepthTexture>(
&$context,
"WEBGL_depth_texture",
),
webgl_draw_buffers: get_extension::<web_sys::WebglDrawBuffers>(
&$context,
"WEBGL_draw_buffers",
),
webgl_lose_context: get_extension::<web_sys::WebglLoseContext>(
&$context,
"WEBGL_lose_context",
),
};
let supported_extensions = $context
.get_supported_extensions()
.unwrap()
.iter()
.map(|val| val.as_string().unwrap())
.collect::<HashSet<String>>();
(extensions, supported_extensions)
}};
}
impl Context {
pub fn from_webgl1_context(context: WebGlRenderingContext) -> Self {
let (extensions, supported_extensions) = build_extensions!(context, WebGlRenderingContext);
Self {
raw: RawRenderingContext::WebGl1(context),
extensions,
supported_extensions,
shaders: tracked_resource(),
programs: tracked_resource(),
buffers: tracked_resource(),
vertex_arrays: tracked_resource(),
textures: tracked_resource(),
samplers: tracked_resource(),
fences: tracked_resource(),
framebuffers: tracked_resource(),
renderbuffers: tracked_resource(),
queries: tracked_resource(),
transform_feedbacks: tracked_resource(),
}
}
pub fn from_webgl2_context(context: WebGl2RenderingContext) -> Self {
let (extensions, supported_extensions) = build_extensions!(context, WebGl2RenderingContext);
Self {
raw: RawRenderingContext::WebGl2(context),
extensions,
supported_extensions,
shaders: tracked_resource(),
programs: tracked_resource(),
buffers: tracked_resource(),
vertex_arrays: tracked_resource(),
textures: tracked_resource(),
samplers: tracked_resource(),
fences: tracked_resource(),
framebuffers: tracked_resource(),
renderbuffers: tracked_resource(),
queries: tracked_resource(),
transform_feedbacks: tracked_resource(),
}
}
pub unsafe fn tex_image_2d_with_html_image(
&self,
target: u32,
level: i32,
internal_format: i32,
format: u32,
ty: u32,
image: &HtmlImageElement,
) {
match self.raw {
RawRenderingContext::WebGl1(ref gl) => {
// TODO: Handle return value?
gl.tex_image_2d_with_u32_and_u32_and_image(
target,
level,
internal_format,
format,
ty,
image,
)
.unwrap();
}
RawRenderingContext::WebGl2(ref gl) => {
// TODO: Handle return value?
gl.tex_image_2d_with_u32_and_u32_and_html_image_element(
target,
level,
internal_format,
format,
ty,
image,
)
.unwrap();
}
}
}
pub unsafe fn tex_image_2d_with_image_bitmap(
&self,
target: u32,
level: i32,
internal_format: i32,
format: u32,
ty: u32,
pixels: &ImageBitmap,
) {
match self.raw {
RawRenderingContext::WebGl1(ref gl) => {
// TODO: Handle return value?
gl.tex_image_2d_with_u32_and_u32_and_image_bitmap(
target,
level,
internal_format,
format,
ty,
pixels,
)
.unwrap();
}
RawRenderingContext::WebGl2(ref gl) => {
// TODO: Handle return value?
gl.tex_image_2d_with_u32_and_u32_and_image_bitmap(
target,
level,
internal_format,
format,
ty,
pixels,
)
.unwrap();
}
}
}
pub unsafe fn tex_image_2d_with_html_canvas(
&self,
target: u32,
level: i32,
internal_format: i32,
format: u32,
ty: u32,
canvas: &HtmlCanvasElement,
) {
match self.raw {
RawRenderingContext::WebGl1(ref gl) => {
// TODO: Handle return value?
gl.tex_image_2d_with_u32_and_u32_and_canvas(
target,
level,
internal_format,
format,
ty,
canvas,
)
.unwrap();
}
RawRenderingContext::WebGl2(ref gl) => {
// TODO: Handle return value?
gl.tex_image_2d_with_u32_and_u32_and_html_canvas_element(
target,
level,
internal_format,
format,
ty,
canvas,
)
.unwrap();
}
}
}
pub unsafe fn tex_sub_image_2d_with_html_image(
&self,
target: u32,
level: i32,
x_offset: i32,
y_offset: i32,
format: u32,
ty: u32,
image: &HtmlImageElement,
) {
match self.raw {
RawRenderingContext::WebGl1(ref gl) => {
gl.tex_sub_image_2d_with_u32_and_u32_and_image(
target, level, x_offset, y_offset, format, ty, image,
)
.unwrap(); // TODO: Handle return value?
}
RawRenderingContext::WebGl2(ref gl) => {
gl.tex_sub_image_2d_with_u32_and_u32_and_html_image_element(
target, level, x_offset, y_offset, format, ty, image,
)
.unwrap(); // TODO: Handle return value?
}
}
}
}
new_key_type! { pub struct WebShaderKey; }
new_key_type! { pub struct WebProgramKey; }
new_key_type! { pub struct WebBufferKey; }
new_key_type! { pub struct WebVertexArrayKey; }
new_key_type! { pub struct WebTextureKey; }
new_key_type! { pub struct WebSamplerKey; }
new_key_type! { pub struct WebFenceKey; }
new_key_type! { pub struct WebFramebufferKey; }
new_key_type! { pub struct WebRenderbufferKey; }
new_key_type! { pub struct WebQueryKey; }
new_key_type! { pub struct WebTransformFeedbackKey; }
impl HasContext for Context {
type Shader = WebShaderKey;
type Program = WebProgramKey;
type Buffer = WebBufferKey;
type VertexArray = WebVertexArrayKey;
type Texture = WebTextureKey;
type Sampler = WebSamplerKey;
type Fence = WebFenceKey;
type Framebuffer = WebFramebufferKey;
type Renderbuffer = WebRenderbufferKey;
type Query = WebQueryKey;
type UniformLocation = WebGlUniformLocation;
type TransformFeedback = WebTransformFeedbackKey;
fn supported_extensions(&self) -> &HashSet<String> {
&self.supported_extensions
}
fn supports_debug(&self) -> bool {
false
}
unsafe fn create_framebuffer(&self) -> Result<Self::Framebuffer, String> {
let raw_framebuffer = match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.create_framebuffer(),
RawRenderingContext::WebGl2(ref gl) => gl.create_framebuffer(),
};
match raw_framebuffer {
Some(s) => {
let key = self.framebuffers.borrow_mut().insert(s);
Ok(key)
}
None => Err(String::from("Unable to create framebuffer object")),
}
}
unsafe fn is_framebuffer(&self, framebuffer: Self::Framebuffer) -> bool {
let framebuffers = self.framebuffers.borrow_mut();
if let Some(ref f) = framebuffers.get(framebuffer) {
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.is_framebuffer(Some(f)),
RawRenderingContext::WebGl2(ref gl) => gl.is_framebuffer(Some(f)),
}
} else {
false
}
}
unsafe fn create_query(&self) -> Result<Self::Query, String> {
let raw_query = match self.raw {
RawRenderingContext::WebGl1(ref _gl) => {
return Err(String::from("Query objects are not supported"));
}
RawRenderingContext::WebGl2(ref gl) => gl.create_query(),
};
match raw_query {
Some(s) => {
let key = self.queries.borrow_mut().insert(s);
Ok(key)
}
None => Err(String::from("Unable to create query object")),
}
}
unsafe fn create_renderbuffer(&self) -> Result<Self::Renderbuffer, String> {
let raw_renderbuffer = match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.create_renderbuffer(),
RawRenderingContext::WebGl2(ref gl) => gl.create_renderbuffer(),
};
match raw_renderbuffer {
Some(s) => {
let key = self.renderbuffers.borrow_mut().insert(s);
Ok(key)
}
None => Err(String::from("Unable to create renderbuffer object")),
}
}
unsafe fn is_renderbuffer(&self, renderbuffer: Self::Renderbuffer) -> bool {
let renderbuffers = self.renderbuffers.borrow_mut();
if let Some(ref r) = renderbuffers.get(renderbuffer) {
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.is_renderbuffer(Some(r)),
RawRenderingContext::WebGl2(ref gl) => gl.is_renderbuffer(Some(r)),
}
} else {
false
}
}
unsafe fn create_sampler(&self) -> Result<Self::Sampler, String> {
let raw_sampler = match self.raw {
RawRenderingContext::WebGl1(ref _gl) => panic!("Sampler objects are not supported"),
RawRenderingContext::WebGl2(ref gl) => gl.create_sampler(),
};
match raw_sampler {
Some(s) => {
let key = self.samplers.borrow_mut().insert(s);
Ok(key)
}
None => Err(String::from("Unable to create sampler object")),
}
}
unsafe fn create_shader(&self, shader_type: u32) -> Result<Self::Shader, String> {
let raw_shader = match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.create_shader(shader_type as u32),
RawRenderingContext::WebGl2(ref gl) => gl.create_shader(shader_type as u32),
};
match raw_shader {
Some(s) => {
let key = self.shaders.borrow_mut().insert(s);
Ok(key)
}
None => Err(String::from("Unable to create shader object")),
}
}
unsafe fn is_shader(&self, shader: Self::Shader) -> bool {
let shaders = self.shaders.borrow_mut();
if let Some(ref s) = shaders.get(shader) {
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.is_shader(Some(s)),
RawRenderingContext::WebGl2(ref gl) => gl.is_shader(Some(s)),
}
} else {
false
}
}
unsafe fn create_texture(&self) -> Result<Self::Texture, String> {
let raw_texture = match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.create_texture(),
RawRenderingContext::WebGl2(ref gl) => gl.create_texture(),
};
match raw_texture {
Some(t) => {
let key = self.textures.borrow_mut().insert(t);
Ok(key)
}
None => Err(String::from("Unable to create texture object")),
}
}
unsafe fn is_texture(&self, texture: Self::Texture) -> bool {
let textures = self.textures.borrow_mut();
if let Some(ref t) = textures.get(texture) {
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.is_texture(Some(t)),
RawRenderingContext::WebGl2(ref gl) => gl.is_texture(Some(t)),
}
} else {
false
}
}
unsafe fn delete_shader(&self, shader: Self::Shader) {
let mut shaders = self.shaders.borrow_mut();
if let Some(ref s) = shaders.remove(shader) {
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.delete_shader(Some(s)),
RawRenderingContext::WebGl2(ref gl) => gl.delete_shader(Some(s)),
}
}
}
unsafe fn shader_source(&self, shader: Self::Shader, source: &str) {
let shaders = self.shaders.borrow();
let raw_shader = shaders.get_unchecked(shader);
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.shader_source(raw_shader, source),
RawRenderingContext::WebGl2(ref gl) => gl.shader_source(raw_shader, source),
}
}
unsafe fn compile_shader(&self, shader: Self::Shader) {
let shaders = self.shaders.borrow();
let raw_shader = shaders.get_unchecked(shader);
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.compile_shader(raw_shader),
RawRenderingContext::WebGl2(ref gl) => gl.compile_shader(raw_shader),
}
}
unsafe fn get_shader_compile_status(&self, shader: Self::Shader) -> bool {
let shaders = self.shaders.borrow();
let raw_shader = shaders.get_unchecked(shader);
match self.raw {
RawRenderingContext::WebGl1(ref gl) => {
gl.get_shader_parameter(raw_shader, COMPILE_STATUS)
}
RawRenderingContext::WebGl2(ref gl) => {
gl.get_shader_parameter(raw_shader, COMPILE_STATUS)
}
}
.as_bool()
.unwrap_or(false)
}
unsafe fn get_shader_info_log(&self, shader: Self::Shader) -> String {
let shaders = self.shaders.borrow();
let raw_shader = shaders.get_unchecked(shader);
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.get_shader_info_log(raw_shader),
RawRenderingContext::WebGl2(ref gl) => gl.get_shader_info_log(raw_shader),
}
.unwrap_or_else(|| String::from(""))
}
unsafe fn get_tex_image(
&self,
_target: u32,
_level: i32,
_format: u32,
_ty: u32,
_pixels: PixelPackData,
) {
panic!("Get tex image is not supported");
}
unsafe fn create_program(&self) -> Result<Self::Program, String> {
let raw_program = match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.create_program(),
RawRenderingContext::WebGl2(ref gl) => gl.create_program(),
};
match raw_program {
Some(p) => {
let key = self.programs.borrow_mut().insert(p);
Ok(key)
}
None => Err(String::from("Unable to create program object")),
}
}
unsafe fn is_program(&self, program: Self::Program) -> bool {
let programs = self.programs.borrow_mut();
if let Some(ref p) = programs.get(program) {
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.is_program(Some(p)),
RawRenderingContext::WebGl2(ref gl) => gl.is_program(Some(p)),
}
} else {
false
}
}
unsafe fn delete_program(&self, program: Self::Program) {
let mut programs = self.programs.borrow_mut();
if let Some(ref p) = programs.remove(program) {
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.delete_program(Some(p)),
RawRenderingContext::WebGl2(ref gl) => gl.delete_program(Some(p)),
}
}
}
unsafe fn attach_shader(&self, program: Self::Program, shader: Self::Shader) {
let programs = self.programs.borrow();
let shaders = self.shaders.borrow();
let raw_program = programs.get_unchecked(program);
let raw_shader = shaders.get_unchecked(shader);
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.attach_shader(raw_program, raw_shader),
RawRenderingContext::WebGl2(ref gl) => gl.attach_shader(raw_program, raw_shader),
}
}
unsafe fn detach_shader(&self, program: Self::Program, shader: Self::Shader) {
let programs = self.programs.borrow();
let shaders = self.shaders.borrow();
let raw_program = programs.get_unchecked(program);
let raw_shader = shaders.get_unchecked(shader);
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.detach_shader(raw_program, raw_shader),
RawRenderingContext::WebGl2(ref gl) => gl.detach_shader(raw_program, raw_shader),
}
}
unsafe fn link_program(&self, program: Self::Program) {
let programs = self.programs.borrow();
let raw_program = programs.get_unchecked(program);
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.link_program(raw_program),
RawRenderingContext::WebGl2(ref gl) => gl.link_program(raw_program),
}
}
unsafe fn get_program_link_status(&self, program: Self::Program) -> bool {
let programs = self.programs.borrow();
let raw_program = programs.get_unchecked(program);
match self.raw {
RawRenderingContext::WebGl1(ref gl) => {
gl.get_program_parameter(raw_program, LINK_STATUS)
}
RawRenderingContext::WebGl2(ref gl) => {
gl.get_program_parameter(raw_program, LINK_STATUS)
}
}
.as_bool()
.unwrap_or(false)
}
unsafe fn get_program_info_log(&self, program: Self::Program) -> String {
let programs = self.programs.borrow();
let raw_program = programs.get_unchecked(program);
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.get_program_info_log(raw_program),
RawRenderingContext::WebGl2(ref gl) => gl.get_program_info_log(raw_program),
}
.unwrap_or_else(|| String::from(""))
}
unsafe fn get_active_uniforms(&self, program: Self::Program) -> u32 {
let programs = self.programs.borrow();
let raw_program = programs.get_unchecked(program);
match self.raw {
RawRenderingContext::WebGl1(ref gl) => {
gl.get_program_parameter(raw_program, WebGlRenderingContext::ACTIVE_UNIFORMS)
}
RawRenderingContext::WebGl2(ref gl) => {
gl.get_program_parameter(raw_program, WebGl2RenderingContext::ACTIVE_UNIFORMS)
}
}
.as_f64()
.map(|v| v as u32)
.unwrap_or(0)
}
unsafe fn get_active_uniform(
&self,
program: Self::Program,
index: u32,
) -> Option<ActiveUniform> {
let programs = self.programs.borrow();
let raw_program = programs.get_unchecked(program);
match self.raw {
RawRenderingContext::WebGl1(ref gl) => {
gl.get_active_uniform(raw_program, index)
.map(|au| ActiveUniform {
size: au.size(),
utype: au.type_(),
name: au.name(),
})
}
RawRenderingContext::WebGl2(ref gl) => {
gl.get_active_uniform(raw_program, index)
.map(|au| ActiveUniform {
size: au.size(),
utype: au.type_(),
name: au.name(),
})
}
}
}
unsafe fn use_program(&self, program: Option<Self::Program>) {
let programs = self.programs.borrow();
let raw_program = program.map(|p| programs.get_unchecked(p));
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.use_program(raw_program),
RawRenderingContext::WebGl2(ref gl) => gl.use_program(raw_program),
}
}
unsafe fn create_buffer(&self) -> Result<Self::Buffer, String> {
let raw_buffer = match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.create_buffer(),
RawRenderingContext::WebGl2(ref gl) => gl.create_buffer(),
};
match raw_buffer {
Some(p) => {
let key = self.buffers.borrow_mut().insert(p);
Ok(key)
}
None => Err(String::from("Unable to create buffer object")),
}
}
unsafe fn is_buffer(&self, buffer: Self::Buffer) -> bool {
let buffers = self.buffers.borrow_mut();
if let Some(ref b) = buffers.get(buffer) {
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.is_buffer(Some(b)),
RawRenderingContext::WebGl2(ref gl) => gl.is_buffer(Some(b)),
}
} else {
false
}
}
unsafe fn bind_buffer(&self, target: u32, buffer: Option<Self::Buffer>) {
let buffers = self.buffers.borrow();
let raw_buffer = buffer.map(|b| buffers.get_unchecked(b));
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.bind_buffer(target, raw_buffer),
RawRenderingContext::WebGl2(ref gl) => gl.bind_buffer(target, raw_buffer),
}
}
unsafe fn bind_buffer_base(&self, target: u32, index: u32, buffer: Option<Self::Buffer>) {
let buffers = self.buffers.borrow();
let raw_buffer = buffer.map(|b| buffers.get_unchecked(b));
match self.raw {
RawRenderingContext::WebGl1(ref _gl) => {
panic!("bind_buffer_base not supported on webgl1")
}
RawRenderingContext::WebGl2(ref gl) => gl.bind_buffer_base(target, index, raw_buffer),
}
}
unsafe fn bind_buffer_range(
&self,
target: u32,
index: u32,
buffer: Option<Self::Buffer>,
offset: i32,
size: i32,
) {
let buffers = self.buffers.borrow();
let raw_buffer = buffer.map(|b| buffers.get_unchecked(b));
match self.raw {
RawRenderingContext::WebGl1(ref _gl) => {
panic!("bind_buffer_range not supported on webgl1");
}
RawRenderingContext::WebGl2(ref gl) => {
gl.bind_buffer_range_with_i32_and_i32(target, index, raw_buffer, offset, size);
}
}
}
unsafe fn bind_vertex_buffer(
&self,
_binding_index: u32,
_buffer: Option<Buffer>,
_offset: i32,
_stride: i32,
) {
panic!("Bind vertex buffer is not supported")
}
unsafe fn bind_framebuffer(&self, target: u32, framebuffer: Option<Self::Framebuffer>) {
let framebuffers = self.framebuffers.borrow();
let raw_framebuffer = framebuffer.map(|f| framebuffers.get_unchecked(f));
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.bind_framebuffer(target, raw_framebuffer),
RawRenderingContext::WebGl2(ref gl) => gl.bind_framebuffer(target, raw_framebuffer),
}
}
unsafe fn bind_renderbuffer(&self, target: u32, renderbuffer: Option<Self::Renderbuffer>) {
let renderbuffers = self.renderbuffers.borrow();
let raw_renderbuffer = renderbuffer.map(|r| renderbuffers.get_unchecked(r));
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.bind_renderbuffer(target, raw_renderbuffer),
RawRenderingContext::WebGl2(ref gl) => gl.bind_renderbuffer(target, raw_renderbuffer),
}
}
unsafe fn blit_framebuffer(
&self,
src_x0: i32,
src_y0: i32,
src_x1: i32,
src_y1: i32,
dst_x0: i32,
dst_y0: i32,
dst_x1: i32,
dst_y1: i32,
mask: u32,
filter: u32,
) {
match self.raw {
RawRenderingContext::WebGl1(ref _gl) => {
panic!("framebuffer blitting usupported in webgl1")
}
RawRenderingContext::WebGl2(ref gl) => {
gl.blit_framebuffer(
src_x0, src_y0, src_x1, src_y1, dst_x0, dst_y0, dst_x1, dst_y1, mask, filter,
);
}
}
}
unsafe fn create_vertex_array(&self) -> Result<Self::VertexArray, String> {
let raw_vertex_array = match self.raw {
RawRenderingContext::WebGl1(ref _gl) => {
match &self.extensions.oes_vertex_array_object {
Some(extension) => extension.create_vertex_array_oes(),
None => panic!("Vertex array objects are not supported"),
}
}
RawRenderingContext::WebGl2(ref gl) => gl.create_vertex_array(),
};
match raw_vertex_array {
Some(va) => {
let key = self.vertex_arrays.borrow_mut().insert(va);
Ok(key)
}
None => Err(String::from("Unable to create vertex array object")),
}
}
unsafe fn delete_vertex_array(&self, vertex_array: Self::VertexArray) {
let mut vertex_arrays = self.vertex_arrays.borrow_mut();
if let Some(ref va) = vertex_arrays.remove(vertex_array) {
match self.raw {
RawRenderingContext::WebGl1(ref _gl) => {
match &self.extensions.oes_vertex_array_object {
Some(extension) => extension.delete_vertex_array_oes(Some(va)),
None => panic!("Vertex array objects are not supported"),
}
}
RawRenderingContext::WebGl2(ref gl) => gl.delete_vertex_array(Some(va)),
}
}
}
unsafe fn bind_vertex_array(&self, vertex_array: Option<Self::VertexArray>) {
let vertex_arrays = self.vertex_arrays.borrow();
let raw_vertex_array = vertex_array.map(|va| vertex_arrays.get_unchecked(va));
match self.raw {
RawRenderingContext::WebGl1(ref _gl) => {
match &self.extensions.oes_vertex_array_object {
Some(extension) => extension.bind_vertex_array_oes(raw_vertex_array),
None => panic!("Vertex array objects are not supported"),
}
}
RawRenderingContext::WebGl2(ref gl) => gl.bind_vertex_array(raw_vertex_array),
}
}
unsafe fn clear_color(&self, red: f32, green: f32, blue: f32, alpha: f32) {
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.clear_color(red, green, blue, alpha),
RawRenderingContext::WebGl2(ref gl) => gl.clear_color(red, green, blue, alpha),
}
}
unsafe fn supports_f64_precision() -> bool {
false
}
unsafe fn clear_depth_f64(&self, _depth: f64) {
panic!("64-bit float precision is not supported in WebGL");
}
unsafe fn clear_depth_f32(&self, depth: f32) {
match self.raw {
RawRenderingContext::WebGl1(ref gl) => gl.clear_depth(depth),
RawRenderingContext::WebGl2(ref gl) => gl.clear_depth(depth),
}
}
unsafe fn clear_stencil(&self, stencil: i32) {
match self.raw {