Encapsulate rendering program setup
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360ce12d8b
commit
8a82fe457f
1 changed files with 42 additions and 22 deletions
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@ -27,6 +27,45 @@ fn compile_shader(
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shader
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}
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fn create_program_with_shaders(
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context: &WebGl2RenderingContext,
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vertex_shader_source: &str,
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fragment_shader_source: &str
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) -> WebGlProgram {
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// compile the shaders
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let vertex_shader = compile_shader(
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&context,
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WebGl2RenderingContext::VERTEX_SHADER,
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vertex_shader_source,
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);
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let fragment_shader = compile_shader(
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&context,
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WebGl2RenderingContext::FRAGMENT_SHADER,
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fragment_shader_source,
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);
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// create the program and attach the shaders
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let program = context.create_program().unwrap();
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context.attach_shader(&program, &vertex_shader);
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context.attach_shader(&program, &fragment_shader);
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context.link_program(&program);
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/* DEBUG */
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// report whether linking succeeded
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let link_status = context
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.get_program_parameter(&program, WebGl2RenderingContext::LINK_STATUS)
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.as_bool()
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.unwrap();
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let link_msg = if link_status {
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"Linked successfully"
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} else {
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"Linking failed"
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};
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console::log_1(&JsValue::from(link_msg));
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program
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}
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fn get_uniform_array_locations<const N: usize>(
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context: &WebGl2RenderingContext,
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program: &WebGlProgram,
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@ -186,31 +225,12 @@ pub fn Display() -> View {
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.dyn_into::<WebGl2RenderingContext>()
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.unwrap();
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// compile and attach the vertex and fragment shaders
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let vertex_shader = compile_shader(
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// create and use the rendering program
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let program = create_program_with_shaders(
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&ctx,
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WebGl2RenderingContext::VERTEX_SHADER,
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include_str!("identity.vert"),
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include_str!("inversive.frag")
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);
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let fragment_shader = compile_shader(
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&ctx,
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WebGl2RenderingContext::FRAGMENT_SHADER,
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include_str!("inversive.frag"),
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);
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let program = ctx.create_program().unwrap();
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ctx.attach_shader(&program, &vertex_shader);
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ctx.attach_shader(&program, &fragment_shader);
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ctx.link_program(&program);
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let link_status = ctx
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.get_program_parameter(&program, WebGl2RenderingContext::LINK_STATUS)
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.as_bool()
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.unwrap();
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let link_msg = if link_status {
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"Linked successfully"
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} else {
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"Linking failed"
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};
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console::log_1(&JsValue::from(link_msg));
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ctx.use_program(Some(&program));
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/* DEBUG */
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