Abstract InternalCreates a new DrawTechnique.
When true, the technique binds silhouette-related uniforms using "edge" material settings (edgeColor/edgeAlpha) instead of fill settings (fillColor/fillAlpha).
Used by silhouette-like techniques that can render both filled silhouettes and edge silhouettes.
Compilation errors encountered during program initialization.
Available after init() is called.
Fragment shader source code. Available after init() is called.
Vertex shader source code. Available after init() is called.
Protected AbstractbuildAbstract method to build the fragment shader source code. Subclasses must implement this method to define the fragment shader logic based on their specific rendering requirements.
Protected AbstractbuildAbstract method to build the vertex shader source code. Subclasses must implement this method to define the fragment shader logic based on their specific rendering requirements.
Destroys the shader program and cleans up resources.
ProtectedfragmentInserts a line of custom vertex shader code into the generated vertex shader source.
ProtectedfsProtectedGenerates fragment shader common definitions.
ProtectedfsProtectedGenerates fragment shader logic for common output.
ProtectedfsProtectedGenerates fragment shader defines for depth rendering.
ProtectedfsProtectedGenerates fragment shader logic for depth rendering.
ProtectedfsProtectedGenerates fragment shader defines for flat-shaded color rendering.
ProtectedfsProtectedGenerates fragment shader logic for flat-shaded color rendering.
ProtectedfsProtectedGenerates a mock fragment shader for testing.
ProtectedfsProtectedGenerates fragment shader defines for screen-space ambient occlusion (SAO).
ProtectedfsProtectedGenerates fragment shader logic for screen-space ambient occlusion (SAO).
ProtectedfsProtectedGenerates the fragment shader header.
ProtectedfsProtectedGenerates fragment shader defines for Lambert shading.
ProtectedfsProtectedGenerates fragment shader logic for Lambert shading.
ProtectedfsProtectedGenerates the closing of the fragment shader main function.
ProtectedfsProtectedGenerates the opening of the fragment shader main function.
ProtectedfsProtectedGenerates fragment shader defines for pick rendering.
ProtectedfsProtectedGenerates fragment shader logic for pick rendering.
ProtectedfsProtectedGenerates fragment shader logic for point rendering.
ProtectedfsProtectedGenerates fragment shader precision definitions.
ProtectedfsProtectedGenerates fragment shader defines for silhouette rendering.
ProtectedfsProtectedGenerates fragment shader logic for silhouette rendering.
ProtectedfsProtectedGenerates fragment shader defines for slicing (section planes).
ProtectedfsProtectedGenerates fragment shader logic for slicing (section planes).
Initializes this draw technique by building and compiling the shader program.
ProtectedvsInserts a line of custom vertex shader code into the generated vertex shader source.
ProtectedvsGenerates vertex shader precision definitions and common definitions.
ProtectedvsGenerates a simple internal vertex shader main function.
ProtectedvsProtectedGenerates vertex shader definitions for depth rendering.
ProtectedvsProtectedGenerates vertex shader logic for depth rendering.
ProtectedvsProtectedGenerates vertex shader definitions for flat color rendering.
ProtectedvsProtectedGenerates vertex shader logic for flat color rendering.
ProtectedvsProtectedGenerates the opening of the vertex shader main function for draw rendering.
ProtectedvsProtectedGenerates a mock vertex shader for testing.
ProtectedvsProtectedGenerates a second mock vertex shader for testing. This time, the uProjMatrix is used.
ProtectedvsProtectedGenerates a third mock vertex shader for testing. This time, the uVertexPositionTexture is tested.
ProtectedvsProtectedGenerates vertex shader definitions for vertex color rendering.
ProtectedvsProtectedGenerates vertex shader logic for vertex color rendering.
ProtectedvsGenerates the vertex shader header.
ProtectedvsProtectedGenerates vertex shader definitions for Lambert shading.
ProtectedvsProtectedvsProtectedGenerates vertex shader logic for Lambert shading.
ProtectedvsProtectedGenerates the closing of the vertex shader main function.
ProtectedvsProtectedGenerates the opening of the vertex shader main function.
ProtectedvsProtectedGenerates the opening of the vertex shader main function for pick rendering.
ProtectedvsProtectedGenerates vertex shader definitions for pick rendering.
ProtectedvsProtectedGenerates vertex shader logic for pick rendering.
ProtectedvsProtectedvsProtectedGenerates vertex shader logic for point size and intensity filtering.
ProtectedvsProtectedGenerates vertex shader logic for point size and intensity filtering.
ProtectedvsProtectedGenerates vertex shader logic for point size calculation.
ProtectedvsProtectedGenerates vertex shader definitions for silhouette rendering.
ProtectedvsProtectedGenerates vertex shader logic for silhouette rendering.
ProtectedvsProtectedGenerates vertex shader definitions for slicing (section planes).
ProtectedvsProtectedGenerates vertex shader logic for slicing (section planes).
Notifies draw technique that the WebGL context has been lost.
Notifies draw technique that the WebGL context has been restored.
This allows the technique to recreate its shaders after context loss.
Result indicating success or failure.
Base class for GPU draw techniques.
Used by DrawOps to perform actual draw calls.
A DrawTechnique encapsulates:
Techniques are render-pass aware but do not own render-pass routing: callers pass a RenderPassValue to drawMesh, and the technique binds uniforms accordingly.
Responsibilities
Lifecycle
Subclasses must implement:
These methods are called during init to generate the GLSL source code, and would typically use helper methods like vsCode, vsHeader, and vsCommonDefines, provided by the base class, to construct the shader source (i.e. Template Method / Template Base Class pattern).