mirror of https://github.com/ZDoom/raze-gles.git
76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
#pragma once
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#include "palentry.h"
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struct TextureManipulation
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{
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enum
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{
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BlendNone = 0,
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BlendAlpha = 1,
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BlendScreen = 2,
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BlendOverlay = 3,
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BlendHardLight = 4,
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BlendMask = 7,
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InvertBit = 8,
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ActiveBit = 16, // Must be set for the shader to do something
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};
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PalEntry AddColor; // Alpha contains the blend flags
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PalEntry ModulateColor; // Alpha may contain a multiplier to get higher values than 1.0 without promoting this to 4 full floats.
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PalEntry BlendColor;
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float DesaturationFactor;
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bool CheckIfEnabled() // check if this manipulation is doing something. NoOps do not need to be preserved, unless they override older setttings.
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{
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if (AddColor != 0 || // this includes a check for the blend mode without which BlendColor is not active
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ModulateColor != 0x01ffffff || // 1 in alpha must be the default for a no-op.
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DesaturationFactor != 0)
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{
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AddColor.a |= ActiveBit; // mark as active for the shader's benefit.
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return true;
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}
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return false;
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}
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void SetTextureModulateColor(int slot, PalEntry rgb)
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{
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rgb.a = ModulateColor.a;
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ModulateColor = rgb;
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}
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void SetTextureModulateScaleFactor(int slot, int fac)
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{
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ModulateColor.a = (uint8_t)fac;
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}
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void SetTextureAdditiveColor(int slot, PalEntry rgb)
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{
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rgb.a = AddColor.a;
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AddColor = rgb;
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}
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void SetTextureBlendColor(int slot, PalEntry rgb)
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{
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BlendColor = rgb;
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}
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void SetTextureDesaturationFactor(int slot, double fac)
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{
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DesaturationFactor = (float)fac;
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}
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void SetTextureBlendMode(int slot, int mode)
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{
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AddColor.a = (AddColor.a & ~TextureManipulation::BlendMask) | (mode & TextureManipulation::BlendMask);
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}
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void SetTextureInvert(bool on)
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{
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AddColor.a |= TextureManipulation::InvertBit;
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AddColor.a &= ~TextureManipulation::InvertBit;
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}
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};
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