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Add Support for WebGL Transormfeedback

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Reference: https://www.khronos.org/registry/webgl/specs/latest/2.0/#3.7.15
This commit is contained in:
Istvan Miklos 2019-09-26 11:55:20 +02:00
parent a33d493a4f
commit 4f112b1705
17 changed files with 588 additions and 17 deletions
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23
components/canvas_traits/webgl.rs
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@ -292,6 +292,16 @@ pub enum WebGLCommand {
GetProgramInfoLog(WebGLProgramId, WebGLSender<String>),
GetFramebufferAttachmentParameter(u32, u32, u32, WebGLSender<i32>),
GetRenderbufferParameter(u32, u32, WebGLSender<i32>),
CreateTransformFeedback(WebGLSender<u32>),
DeleteTransformFeedback(u32),
IsTransformFeedback(u32, WebGLSender<bool>),
BindTransformFeedback(u32, u32),
BeginTransformFeedback(u32),
EndTransformFeedback(),
PauseTransformFeedback(),
ResumeTransformFeedback(),
GetTransformFeedbackVarying(WebGLProgramId, u32, WebGLSender<(i32, u32, String)>),
TransformFeedbackVaryings(WebGLProgramId, Vec<String>, u32),
PolygonOffset(f32, f32),
RenderbufferStorage(u32, u32, i32, i32),
ReadPixels(Rect<u32>, u32, u32, IpcBytesSender),
@ -660,6 +670,10 @@ pub struct ProgramLinkInfo {
pub active_attribs: Box<[ActiveAttribInfo]>,
/// The list of active uniforms.
pub active_uniforms: Box<[ActiveUniformInfo]>,
/// The number of varying variables
pub transform_feedback_length: i32,
/// The buffer mode used when transform feedback is active
pub transform_feedback_mode: i32,
}
/// Description of a single active attribute.
@ -733,6 +747,8 @@ parameters! {
Bool(ParameterBool {
DepthWritemask = gl::DEPTH_WRITEMASK,
SampleCoverageInvert = gl::SAMPLE_COVERAGE_INVERT,
TransformFeedbackActive = gl::TRANSFORM_FEEDBACK_ACTIVE,
TransformFeedbackPaused = gl::TRANSFORM_FEEDBACK_PAUSED,
}),
Bool4(ParameterBool4 {
ColorWritemask = gl::COLOR_WRITEMASK,
@ -774,6 +790,12 @@ parameters! {
StencilValueMask = gl::STENCIL_VALUE_MASK,
StencilWritemask = gl::STENCIL_WRITEMASK,
SubpixelBits = gl::SUBPIXEL_BITS,
TransformFeedbackBinding = gl::TRANSFORM_FEEDBACK_BINDING,
MaxTransformFeedbackInterleavedComponents = gl::MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS,
MaxTransformFeedbackSeparateAttribs = gl::MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS,
MaxTransformFeedbackSeparateComponents = gl::MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS,
TransformFeedbackBufferSize = gl::TRANSFORM_FEEDBACK_BUFFER_SIZE,
TransformFeedbackBufferStart = gl::TRANSFORM_FEEDBACK_BUFFER_START,
}),
Int2(ParameterInt2 {
MaxViewportDims = gl::MAX_VIEWPORT_DIMS,
@ -968,4 +990,5 @@ pub struct GLLimits {
pub max_vertex_texture_image_units: u32,
pub max_vertex_uniform_vectors: u32,
pub max_client_wait_timeout_webgl: std::time::Duration,
pub max_transform_feedback_separate_attribs: u32,
}