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http://git.eaglercraft.rip/eaglercraft/eaglercraft-1.8.git
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36 lines
1.6 KiB
GLSL
36 lines
1.6 KiB
GLSL
/*
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* Copyright (c) 2025 lax1dude. All Rights Reserved.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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// Assuming modern GPUs probably implement clamp, max, and ciel without branches
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// value1 > value2 ? 1.0 : 0.0
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#define COMPARE_GT_0_1(value1, value2) clamp(ceil(value1 - value2), 0.0, 1.0)
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// value1 > value2 ? N : 0.0
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#define COMPARE_GT_0_ANY(value1, value2) max(ceil(value1 - value2), 0.0)
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// value1 < value2 ? 1.0 : 0.0
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#define COMPARE_LT_0_1(value1, value2) clamp(ceil(value2 - value1), 0.0, 1.0)
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// value1 < value2 ? N : 0.0
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#define COMPARE_LT_0_ANY(value1, value2) max(ceil(value2 - value1), 0.0)
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// value1 > value2 ? ifGT : ifLT
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#define COMPARE_GT_C_C(value1, value2, ifGT, ifLT) (COMPARE_GT_0_1(value1, value2) * (ifGT - ifLT) + ifLT)
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// value1 < value2 ? ifLT : ifGT
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#define COMPARE_LT_C_C(value1, value2, ifLT, ifGT) (COMPARE_LT_0_1(value1, value2) * (ifLT - ifGT) + ifGT)
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