void GLBackend::do_setStateStencil(State::StencilActivation activation, State::StencilTest testFront, State::StencilTest testBack) {
const auto& currentActivation = _pipeline._stateCache.stencilActivation;
const auto& currentTestFront = _pipeline._stateCache.stencilTestFront;
const auto& currentTestBack = _pipeline._stateCache.stencilTestBack;
if ((currentActivation != activation)
|| (currentTestFront != testFront)
|| (currentTestBack != testBack)) {
if (activation.isEnabled()) {
glEnable(GL_STENCIL_TEST);
} else {
glDisable(GL_STENCIL_TEST);
}
if (activation.getWriteMaskFront() != activation.getWriteMaskBack()) {
glStencilMaskSeparate(GL_FRONT, activation.getWriteMaskFront());
glStencilMaskSeparate(GL_BACK, activation.getWriteMaskBack());
} else {
glStencilMask(activation.getWriteMaskFront());
}
static GLenum STENCIL_OPS[State::NUM_STENCIL_OPS] = {
GL_KEEP,
GL_ZERO,
GL_REPLACE,
GL_INCR_WRAP,
GL_DECR_WRAP,
GL_INVERT,
GL_INCR,
GL_DECR };
if (testFront != testBack) {
glStencilOpSeparate(GL_FRONT, STENCIL_OPS[testFront.getFailOp()], STENCIL_OPS[testFront.getDepthFailOp()], STENCIL_OPS[testFront.getPassOp()]);
glStencilFuncSeparate(GL_FRONT, COMPARISON_TO_GL[testFront.getFunction()], testFront.getReference(), testFront.getReadMask());
glStencilOpSeparate(GL_BACK, STENCIL_OPS[testBack.getFailOp()], STENCIL_OPS[testBack.getDepthFailOp()], STENCIL_OPS[testBack.getPassOp()]);
glStencilFuncSeparate(GL_BACK, COMPARISON_TO_GL[testBack.getFunction()], testBack.getReference(), testBack.getReadMask());
} else {
glStencilOp(STENCIL_OPS[testFront.getFailOp()], STENCIL_OPS[testFront.getDepthFailOp()], STENCIL_OPS[testFront.getPassOp()]);
glStencilFunc(COMPARISON_TO_GL[testFront.getFunction()], testFront.getReference(), testFront.getReadMask());
}
(void)CHECK_GL_ERROR();
_pipeline._stateCache.stencilActivation = activation;
_pipeline._stateCache.stencilTestFront = testFront;
_pipeline._stateCache.stencilTestBack = testBack;
}
}
void GLBackend::do_setStateStencil(State::StencilActivation activation, State::StencilTest frontTest, State::StencilTest backTest) {
if ((_pipeline._stateCache.stencilActivation != activation)
|| (_pipeline._stateCache.stencilTestFront != frontTest)
|| (_pipeline._stateCache.stencilTestBack != backTest)) {
if (activation.isEnabled()) {
glEnable(GL_STENCIL_TEST);
glStencilMaskSeparate(GL_FRONT, activation.getWriteMaskFront());
glStencilMaskSeparate(GL_BACK, activation.getWriteMaskBack());
static GLenum STENCIL_OPS[] = {
GL_KEEP,
GL_ZERO,
GL_REPLACE,
GL_INCR_WRAP,
GL_DECR_WRAP,
GL_INVERT,
GL_INCR,
GL_DECR };
glStencilFuncSeparate(GL_FRONT, STENCIL_OPS[frontTest.getFailOp()], STENCIL_OPS[frontTest.getPassOp()], STENCIL_OPS[frontTest.getDepthFailOp()]);
glStencilFuncSeparate(GL_FRONT, GL_COMPARISON_FUNCTIONS[frontTest.getFunction()], frontTest.getReference(), frontTest.getReadMask());
glStencilFuncSeparate(GL_BACK, STENCIL_OPS[backTest.getFailOp()], STENCIL_OPS[backTest.getPassOp()], STENCIL_OPS[backTest.getDepthFailOp()]);
glStencilFuncSeparate(GL_BACK, GL_COMPARISON_FUNCTIONS[backTest.getFunction()], backTest.getReference(), backTest.getReadMask());
} else {
glDisable(GL_STENCIL_TEST);
}
(void) CHECK_GL_ERROR();
_pipeline._stateCache.stencilActivation = activation;
_pipeline._stateCache.stencilTestFront = frontTest;
_pipeline._stateCache.stencilTestBack = backTest;
}
}