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Implement EXT_blend_minmax
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parent
6a4bd8d3fa
commit
02b8766e75
6 changed files with 99 additions and 65 deletions
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@ -12,6 +12,7 @@ use canvas_traits::webgl::{WebGLResult, WebGLSLVersion, WebGLVersion};
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use canvas_traits::webgl::{WebVRCommand, webgl_channel};
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use canvas_traits::webgl::WebGLError::*;
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use dom::bindings::cell::DomRefCell;
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use dom::bindings::codegen::Bindings::EXTBlendMinmaxBinding::EXTBlendMinmaxConstants;
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use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::{self, WebGLContextAttributes};
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use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLRenderingContextConstants as constants;
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use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLRenderingContextMethods;
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@ -1193,6 +1194,21 @@ impl WebGLRenderingContext {
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_ => Err(WebGLError::InvalidEnum),
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}
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}
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fn validate_blend_mode(&self, mode: u32) -> WebGLResult<()> {
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match mode {
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constants::FUNC_ADD |
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constants::FUNC_SUBTRACT |
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constants::FUNC_REVERSE_SUBTRACT => {
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Ok(())
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}
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EXTBlendMinmaxConstants::MIN_EXT |
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EXTBlendMinmaxConstants::MAX_EXT if self.extension_manager.is_blend_minmax_enabled() => {
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Ok(())
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}
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_ => Err(InvalidEnum),
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}
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}
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}
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impl Drop for WebGLRenderingContext {
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@ -1547,30 +1563,14 @@ impl WebGLRenderingContextMethods for WebGLRenderingContext {
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// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.3
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fn BlendEquation(&self, mode: u32) {
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match mode {
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constants::FUNC_ADD |
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constants::FUNC_SUBTRACT |
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constants::FUNC_REVERSE_SUBTRACT => {
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self.send_command(WebGLCommand::BlendEquation(mode))
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}
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_ => self.webgl_error(InvalidEnum),
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}
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handle_potential_webgl_error!(self, self.validate_blend_mode(mode), return);
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self.send_command(WebGLCommand::BlendEquation(mode))
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}
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// https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.3
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fn BlendEquationSeparate(&self, mode_rgb: u32, mode_alpha: u32) {
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match mode_rgb {
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constants::FUNC_ADD |
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constants::FUNC_SUBTRACT |
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constants::FUNC_REVERSE_SUBTRACT => {},
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_ => return self.webgl_error(InvalidEnum),
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}
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match mode_alpha {
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constants::FUNC_ADD |
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constants::FUNC_SUBTRACT |
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constants::FUNC_REVERSE_SUBTRACT => {},
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_ => return self.webgl_error(InvalidEnum),
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}
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handle_potential_webgl_error!(self, self.validate_blend_mode(mode_rgb), return);
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handle_potential_webgl_error!(self, self.validate_blend_mode(mode_alpha), return);
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self.send_command(WebGLCommand::BlendEquationSeparate(mode_rgb, mode_alpha));
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}
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