void addPlumberPipeline(ShapePlumber& plumber,
const ShapeKey& key, const gpu::ShaderPointer& vertex, const gpu::ShaderPointer& pixel) {
// These key-values' pipelines are added by this functor in addition to the key passed
assert(!key.isWireframe());
assert(!key.isDepthBiased());
assert(key.isCullFace());
gpu::ShaderPointer program = gpu::Shader::createProgram(vertex, pixel);
for (int i = 0; i < 8; i++) {
bool isCulled = (i & 1);
bool isBiased = (i & 2);
bool isWireframed = (i & 4);
auto state = std::make_shared<gpu::State>();
PrepareStencil::testMaskDrawShape(*state);
// Depth test depends on transparency
state->setDepthTest(true, !key.isTranslucent(), gpu::LESS_EQUAL);
state->setBlendFunction(key.isTranslucent(),
gpu::State::SRC_ALPHA, gpu::State::BLEND_OP_ADD, gpu::State::INV_SRC_ALPHA,
gpu::State::FACTOR_ALPHA, gpu::State::BLEND_OP_ADD, gpu::State::ONE);
ShapeKey::Builder builder(key);
if (!isCulled) {
builder.withoutCullFace();
}
state->setCullMode(isCulled ? gpu::State::CULL_BACK : gpu::State::CULL_NONE);
if (isWireframed) {
builder.withWireframe();
state->setFillMode(gpu::State::FILL_LINE);
}
if (isBiased) {
builder.withDepthBias();
state->setDepthBias(1.0f);
state->setDepthBiasSlopeScale(1.0f);
}
plumber.addPipeline(builder.build(), program, state,
key.isTranslucent() ? &lightBatchSetter : &batchSetter);
}
}
