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Fix WebGL tests & Implement WebGLRenderingContext::{validateProgram, …
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…getProgramInfoLog, disableVertexAttribArray}, r=emilio
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@MortimerGoro
MortimerGoro committed Oct 3, 2016
1 parent 522734d commit a07d6b3
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Showing 28 changed files with 290 additions and 123 deletions.
70 changes: 66 additions & 4 deletions components/script/dom/webglprogram.rs
View file
Expand Up @@ -24,6 +24,7 @@ pub struct WebGLProgram {
webgl_object: WebGLObject,
id: WebGLProgramId,
is_deleted: Cell<bool>,
link_called: Cell<bool>,
linked: Cell<bool>,
fragment_shader: MutNullableHeap<JS<WebGLShader>>,
vertex_shader: MutNullableHeap<JS<WebGLShader>>,
Expand All @@ -39,6 +40,7 @@ impl WebGLProgram {
webgl_object: WebGLObject::new_inherited(),
id: id,
is_deleted: Cell::new(false),
link_called: Cell::new(false),
linked: Cell::new(false),
fragment_shader: Default::default(),
vertex_shader: Default::default(),
Expand Down Expand Up @@ -91,27 +93,38 @@ impl WebGLProgram {
self.is_deleted.get()
}

pub fn is_linked(&self) -> bool {
self.linked.get()
}

/// glLinkProgram
pub fn link(&self) {
pub fn link(&self) -> WebGLResult<()> {
if self.is_deleted() {
return Err(WebGLError::InvalidOperation);
}
self.linked.set(false);
self.link_called.set(true);

match self.fragment_shader.get() {
Some(ref shader) if shader.successfully_compiled() => {},
_ => return,
_ => return Ok(()), // callers use gl.LINK_STATUS to check link errors
}

match self.vertex_shader.get() {
Some(ref shader) if shader.successfully_compiled() => {},
_ => return,
_ => return Ok(()), // callers use gl.LINK_STATUS to check link errors
}

self.linked.set(true);

self.renderer.send(CanvasMsg::WebGL(WebGLCommand::LinkProgram(self.id))).unwrap();
Ok(())
}

/// glUseProgram
pub fn use_program(&self) -> WebGLResult<()> {
if self.is_deleted() {
return Err(WebGLError::InvalidOperation);
}
if !self.linked.get() {
return Err(WebGLError::InvalidOperation);
}
Expand All @@ -120,8 +133,20 @@ impl WebGLProgram {
Ok(())
}

/// glValidateProgram
pub fn validate(&self) -> WebGLResult<()> {
if self.is_deleted() {
return Err(WebGLError::InvalidOperation);
}
self.renderer.send(CanvasMsg::WebGL(WebGLCommand::ValidateProgram(self.id))).unwrap();
Ok(())
}

/// glAttachShader
pub fn attach_shader(&self, shader: &WebGLShader) -> WebGLResult<()> {
if self.is_deleted() || shader.is_deleted() {
return Err(WebGLError::InvalidOperation);
}
let shader_slot = match shader.gl_type() {
constants::FRAGMENT_SHADER => &self.fragment_shader,
constants::VERTEX_SHADER => &self.vertex_shader,
Expand All @@ -147,6 +172,9 @@ impl WebGLProgram {

/// glDetachShader
pub fn detach_shader(&self, shader: &WebGLShader) -> WebGLResult<()> {
if self.is_deleted() {
return Err(WebGLError::InvalidOperation);
}
let shader_slot = match shader.gl_type() {
constants::FRAGMENT_SHADER => &self.fragment_shader,
constants::VERTEX_SHADER => &self.vertex_shader,
Expand Down Expand Up @@ -174,6 +202,9 @@ impl WebGLProgram {

/// glBindAttribLocation
pub fn bind_attrib_location(&self, index: u32, name: DOMString) -> WebGLResult<()> {
if self.is_deleted() {
return Err(WebGLError::InvalidOperation);
}
if name.len() > MAX_UNIFORM_AND_ATTRIBUTE_LEN {
return Err(WebGLError::InvalidValue);
}
Expand All @@ -190,6 +221,9 @@ impl WebGLProgram {
}

pub fn get_active_uniform(&self, index: u32) -> WebGLResult<Root<WebGLActiveInfo>> {
if self.is_deleted() {
return Err(WebGLError::InvalidValue);
}
let (sender, receiver) = ipc::channel().unwrap();
self.renderer
.send(CanvasMsg::WebGL(WebGLCommand::GetActiveUniform(self.id, index, sender)))
Expand All @@ -201,6 +235,9 @@ impl WebGLProgram {

/// glGetActiveAttrib
pub fn get_active_attrib(&self, index: u32) -> WebGLResult<Root<WebGLActiveInfo>> {
if self.is_deleted() {
return Err(WebGLError::InvalidValue);
}
let (sender, receiver) = ipc::channel().unwrap();
self.renderer
.send(CanvasMsg::WebGL(WebGLCommand::GetActiveAttrib(self.id, index, sender)))
Expand All @@ -212,6 +249,9 @@ impl WebGLProgram {

/// glGetAttribLocation
pub fn get_attrib_location(&self, name: DOMString) -> WebGLResult<Option<i32>> {
if !self.is_linked() || self.is_deleted() {
return Err(WebGLError::InvalidOperation);
}
if name.len() > MAX_UNIFORM_AND_ATTRIBUTE_LEN {
return Err(WebGLError::InvalidValue);
}
Expand All @@ -234,6 +274,9 @@ impl WebGLProgram {

/// glGetUniformLocation
pub fn get_uniform_location(&self, name: DOMString) -> WebGLResult<Option<i32>> {
if !self.is_linked() || self.is_deleted() {
return Err(WebGLError::InvalidOperation);
}
if name.len() > MAX_UNIFORM_AND_ATTRIBUTE_LEN {
return Err(WebGLError::InvalidValue);
}
Expand All @@ -250,6 +293,25 @@ impl WebGLProgram {
Ok(receiver.recv().unwrap())
}

/// glGetProgramInfoLog
pub fn get_info_log(&self) -> WebGLResult<String> {
if self.is_deleted() {
return Err(WebGLError::InvalidOperation);
}
if self.link_called.get() {
let shaders_compiled = match (self.fragment_shader.get(), self.vertex_shader.get()) {
(Some(fs), Some(vs)) => fs.successfully_compiled() && vs.successfully_compiled(),
_ => false
};
if !shaders_compiled {
return Ok("One or more shaders failed to compile".to_string());
}
}
let (sender, receiver) = ipc::channel().unwrap();
self.renderer.send(CanvasMsg::WebGL(WebGLCommand::GetProgramInfoLog(self.id, sender))).unwrap();
Ok(receiver.recv().unwrap())
}

/// glGetProgramParameter
pub fn parameter(&self, param_id: u32) -> WebGLResult<WebGLParameter> {
let (sender, receiver) = ipc::channel().unwrap();
Expand Down
160 changes: 138 additions & 22 deletions components/script/dom/webglrenderingcontext.rs
View file
Expand Up @@ -1281,15 +1281,36 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
return self.webgl_error(InvalidOperation);
}

if count <= 0 {
return self.webgl_error(InvalidOperation);
if count < 0 {
return self.webgl_error(InvalidValue);
}

if offset < 0 {
return self.webgl_error(InvalidValue);
}

if self.current_program.get().is_none() || self.bound_buffer_element_array.get().is_none() {
if self.current_program.get().is_none() {
// From the WebGL spec
//
// If the CURRENT_PROGRAM is null, an INVALID_OPERATION error will be generated.
// WebGL performs additional error checking beyond that specified
// in OpenGL ES 2.0 during calls to drawArrays and drawElements.
//
return self.webgl_error(InvalidOperation);
}

if let Some(array_buffer) = self.bound_buffer_element_array.get() {
// WebGL Spec: check buffer overflows, must be a valid multiple of the size.
let val = offset as u64 + (count as u64 * type_size as u64);
if val > array_buffer.capacity() as u64 {
return self.webgl_error(InvalidOperation);
}
} else {
// From the WebGL spec
//
// a non-null WebGLBuffer must be bound to the ELEMENT_ARRAY_BUFFER binding point
// or an INVALID_OPERATION error will be generated.
//
return self.webgl_error(InvalidOperation);
}

Expand Down Expand Up @@ -1322,26 +1343,69 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
.unwrap()
}

// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.10
fn DisableVertexAttribArray(&self, attrib_id: u32) {
if attrib_id > self.limits.max_vertex_attribs {
return self.webgl_error(InvalidValue);
}

self.ipc_renderer
.send(CanvasMsg::WebGL(WebGLCommand::DisableVertexAttribArray(attrib_id)))
.unwrap()
}

// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.10
fn GetActiveUniform(&self, program: Option<&WebGLProgram>, index: u32) -> Option<Root<WebGLActiveInfo>> {
program.and_then(|p| match p.get_active_uniform(index) {
let program = match program {
Some(program) => program,
None => {
// Reasons to generate InvalidValue error
// From the GLES 2.0 spec
//
// "INVALID_VALUE is generated if index is greater than or equal
// to the number of active uniform variables in program"
//
// A null program has no uniforms so any index is always greater than the active uniforms
// WebGl conformance expects error with null programs. Check tests in get-active-test.html
self.webgl_error(InvalidValue);
return None;
}
};

match program.get_active_uniform(index) {
Ok(ret) => Some(ret),
Err(error) => {
self.webgl_error(error);
None
},
})
Err(e) => {
self.webgl_error(e);
return None;
}
}
}

// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.10
fn GetActiveAttrib(&self, program: Option<&WebGLProgram>, index: u32) -> Option<Root<WebGLActiveInfo>> {
program.and_then(|p| match p.get_active_attrib(index) {
let program = match program {
Some(program) => program,
None => {
// Reasons to generate InvalidValue error
// From the GLES 2.0 spec
//
// "INVALID_VALUE is generated if index is greater than or equal
// to the number of active attribute variables in program"
//
// A null program has no attributes so any index is always greater than the active uniforms
// WebGl conformance expects error with null programs. Check tests in get-active-test.html
self.webgl_error(InvalidValue);
return None;
}
};

match program.get_active_attrib(index) {
Ok(ret) => Some(ret),
Err(error) => {
self.webgl_error(error);
None
},
})
Err(e) => {
self.webgl_error(e);
return None;
}
}
}

// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.10
Expand All @@ -1353,6 +1417,22 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
}
}

// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.9
fn GetProgramInfoLog(&self, program: Option<&WebGLProgram>) -> Option<DOMString> {
if let Some(program) = program {
match program.get_info_log() {
Ok(value) => Some(DOMString::from(value)),
Err(e) => {
self.webgl_error(e);
None
}
}
} else {
self.webgl_error(WebGLError::InvalidValue);
None
}
}

// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.9
fn GetProgramParameter(&self, _: *mut JSContext, program: Option<&WebGLProgram>, param_id: u32) -> JSVal {
if let Some(program) = program {
Expand Down Expand Up @@ -1699,7 +1779,9 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.9
fn LinkProgram(&self, program: Option<&WebGLProgram>) {
if let Some(program) = program {
program.link()
if let Err(e) = program.link() {
self.webgl_error(e);
}
}
}

Expand Down Expand Up @@ -1940,6 +2022,15 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
}
}

// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.9
fn ValidateProgram(&self, program: Option<&WebGLProgram>) {
if let Some(program) = program {
if let Err(e) = program.validate() {
self.webgl_error(e);
}
}
}

// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.10
fn VertexAttrib1f(&self, indx: u32, x: f32) {
self.vertex_attrib(indx, x, 0f32, 0f32, 1f32)
Expand Down Expand Up @@ -2016,13 +2107,38 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
return self.webgl_error(InvalidValue);
}

if let constants::FLOAT = data_type {
let msg = CanvasMsg::WebGL(
WebGLCommand::VertexAttribPointer2f(attrib_id, size, normalized, stride, offset as u32));
self.ipc_renderer.send(msg).unwrap()
} else {
panic!("VertexAttribPointer: Data Type not supported")
// GLES spec: If offset or stride is negative, an INVALID_VALUE error will be generated
// WebGL spec: the maximum supported stride is 255
if stride < 0 || stride > 255 || offset < 0 {
return self.webgl_error(InvalidValue);
}
if size < 1 || size > 4 {
return self.webgl_error(InvalidValue);
}
if self.bound_buffer_array.get().is_none() {
return self.webgl_error(InvalidOperation);
}

// stride and offset must be multiple of data_type
match data_type {
constants::BYTE | constants::UNSIGNED_BYTE => {},
constants::SHORT | constants::UNSIGNED_SHORT => {
if offset % 2 > 0 || stride % 2 > 0 {
return self.webgl_error(InvalidOperation);
}
},
constants::FLOAT => {
if offset % 4 > 0 || stride % 4 > 0 {
return self.webgl_error(InvalidOperation);
}
},
_ => return self.webgl_error(InvalidEnum),

}

let msg = CanvasMsg::WebGL(
WebGLCommand::VertexAttribPointer(attrib_id, size, data_type, normalized, stride, offset as u32));
self.ipc_renderer.send(msg).unwrap()
}

// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.4
Expand Down

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