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Implement stencil fns for WebGLRenderingContext

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This commit is contained in:
Keith Yeung 2016-04-17 15:57:05 -04:00
parent 84ab7e9fe8
commit 2946fbef77
2 changed files with 93 additions and 9 deletions
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90
components/script/dom/webglrenderingcontext.rs
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@ -180,13 +180,21 @@ impl WebGLRenderingContext {
.unwrap();
}
fn validate_stencil_actions(&self, action: u32) -> bool {
match action {
0 | constants::KEEP | constants::REPLACE | constants::INCR | constants::DECR |
constants::INVERT | constants::INCR_WRAP | constants::DECR_WRAP => true,
_ => false,
}
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.10
// https://www.khronos.org/opengles/sdk/docs/man/xhtml/glUniform.xml
// https://www.khronos.org/registry/gles/specs/2.0/es_full_spec_2.0.25.pdf#nameddest=section-2.10.4
fn validate_uniform_parameters<T>(&self,
uniform: Option<&WebGLUniformLocation>,
uniform_type: UniformSetterType,
data: Option<&[T]>) -> bool {
uniform: Option<&WebGLUniformLocation>,
uniform_type: UniformSetterType,
data: Option<&[T]>) -> bool {
let uniform = match uniform {
Some(uniform) => uniform,
None => return false,
@ -1219,6 +1227,82 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
.unwrap()
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.3
fn StencilFunc(&self, func: u32, ref_: i32, mask: u32) {
match func {
constants::NEVER | constants::LESS | constants::EQUAL | constants::LEQUAL |
constants::GREATER | constants::NOTEQUAL | constants::GEQUAL | constants::ALWAYS =>
self.ipc_renderer
.send(CanvasMsg::WebGL(WebGLCommand::StencilFunc(func, ref_, mask)))
.unwrap(),
_ => self.webgl_error(InvalidEnum),
}
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.3
fn StencilFuncSeparate(&self, face: u32, func: u32, ref_: i32, mask: u32) {
match face {
constants::FRONT | constants::BACK | constants::FRONT_AND_BACK => (),
_ => return self.webgl_error(InvalidEnum),
}
match func {
constants::NEVER | constants::LESS | constants::EQUAL | constants::LEQUAL |
constants::GREATER | constants::NOTEQUAL | constants::GEQUAL | constants::ALWAYS =>
self.ipc_renderer
.send(CanvasMsg::WebGL(WebGLCommand::StencilFuncSeparate(face, func, ref_, mask)))
.unwrap(),
_ => self.webgl_error(InvalidEnum),
}
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.3
fn StencilMask(&self, mask: u32) {
self.ipc_renderer
.send(CanvasMsg::WebGL(WebGLCommand::StencilMask(mask)))
.unwrap()
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.3
fn StencilMaskSeparate(&self, face: u32, mask: u32) {
match face {
constants::FRONT | constants::BACK | constants::FRONT_AND_BACK =>
self.ipc_renderer
.send(CanvasMsg::WebGL(WebGLCommand::StencilMaskSeparate(face, mask)))
.unwrap(),
_ => return self.webgl_error(InvalidEnum),
}
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.3
fn StencilOp(&self, fail: u32, zfail: u32, zpass: u32) {
if self.validate_stencil_actions(fail) && self.validate_stencil_actions(zfail) &&
self.validate_stencil_actions(zpass) {
self.ipc_renderer
.send(CanvasMsg::WebGL(WebGLCommand::StencilOp(fail, zfail, zpass)))
.unwrap()
} else {
self.webgl_error(InvalidEnum)
}
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.3
fn StencilOpSeparate(&self, face: u32, fail: u32, zfail: u32, zpass: u32) {
match face {
constants::FRONT | constants::BACK | constants::FRONT_AND_BACK => (),
_ => return self.webgl_error(InvalidEnum),
}
if self.validate_stencil_actions(fail) && self.validate_stencil_actions(zfail) &&
self.validate_stencil_actions(zpass) {
self.ipc_renderer
.send(CanvasMsg::WebGL(WebGLCommand::StencilOpSeparate(face, fail, zfail, zpass)))
.unwrap()
} else {
self.webgl_error(InvalidEnum)
}
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.9
fn LinkProgram(&self, program: Option<&WebGLProgram>) {
if let Some(program) = program {