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Add a new blend mode for sprites

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This commit is contained in:
Magnus Norddahl 2016-11-30 07:49:04 +01:00
parent 6cc33553c2
commit 03282c957b
7 changed files with 34 additions and 2 deletions
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6
src/r_drawers.cpp
View file

@ -119,6 +119,7 @@ extern "C"
void TriDrawNormal32_10_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriDrawNormal32_11_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriDrawNormal32_12_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriDrawNormal32_13_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillNormal8_0_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillNormal8_1_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillNormal8_2_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
@ -145,6 +146,7 @@ extern "C"
void TriFillNormal32_10_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillNormal32_11_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillNormal32_12_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillNormal32_13_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriDrawSubsector8_0_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriDrawSubsector8_1_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriDrawSubsector8_2_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
@ -158,6 +160,7 @@ extern "C"
void TriDrawSubsector8_10_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriDrawSubsector8_11_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriDrawSubsector8_12_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriDrawSubsector8_13_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriDrawSubsector32_0_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriDrawSubsector32_1_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriDrawSubsector32_2_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
@ -171,6 +174,7 @@ extern "C"
void TriDrawSubsector32_10_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriDrawSubsector32_11_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriDrawSubsector32_12_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriDrawSubsector32_13_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillSubsector8_0_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillSubsector8_1_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillSubsector8_2_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
@ -184,6 +188,7 @@ extern "C"
void TriFillSubsector8_10_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillSubsector8_11_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillSubsector8_12_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillSubsector8_13_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillSubsector32_0_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillSubsector32_1_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillSubsector32_2_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
@ -197,6 +202,7 @@ extern "C"
void TriFillSubsector32_10_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillSubsector32_11_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillSubsector32_12_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriFillSubsector32_13_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriStencil_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
void TriStencilClose_SSE2(const TriDrawTriangleArgs *, WorkerThreadData *);
}

5
src/r_drawers.h
View file

@ -253,10 +253,11 @@ enum class TriBlendMode
TranslateAlphaBlend, // blend_alpha_blend(shade(translate(fg)), bg)
TranslateAdd, // blend_add(shade(translate(fg)), bg, srcalpha, calc_blend_bgalpha(fg, destalpha))
TranslateSub, // blend_sub(shade(translate(fg)), bg, srcalpha, calc_blend_bgalpha(fg, destalpha))
TranslateRevSub // blend_revsub(shade(translate(fg)), bg, srcalpha, calc_blend_bgalpha(fg, destalpha))
TranslateRevSub,// blend_revsub(shade(translate(fg)), bg, srcalpha, calc_blend_bgalpha(fg, destalpha))
AddSrcColorOneMinusSrcColor // glBlendMode(GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR) used by GZDoom's fullbright additive sprites
};
inline int NumTriBlendModes() { return (int)TriBlendMode::TranslateRevSub + 1; }
inline int NumTriBlendModes() { return (int)TriBlendMode::AddSrcColorOneMinusSrcColor + 1; }
class Drawers
{

6
src/r_poly_sprite.cpp
View file

@ -150,6 +150,12 @@ void RenderPolySprite::Render(const TriMatrix &worldToClip, const Vec4f &clipPla
args.uniforms.srcalpha = 256;
blendmode = args.translation ? TriBlendMode::TranslateAdd : TriBlendMode::Add;
}
else if (thing->RenderStyle == LegacyRenderStyles[STYLE_Add] && fullbrightSprite && thing->Alpha == 1.0 && args.translation == nullptr)
{
args.uniforms.destalpha = 256;
args.uniforms.srcalpha = 256;
blendmode = TriBlendMode::AddSrcColorOneMinusSrcColor;
}
else if (thing->RenderStyle == LegacyRenderStyles[STYLE_Add])
{
args.uniforms.destalpha = (uint32_t)(1.0 * 256);

1
src/r_poly_triangle.cpp
View file

@ -376,6 +376,7 @@ FString DrawPolyTrianglesCommand::DebugInfo()
case TriBlendMode::TranslateAdd: blendmodestr = "TranslateAdd"; break;
case TriBlendMode::TranslateSub: blendmodestr = "TranslateSub"; break;
case TriBlendMode::TranslateRevSub: blendmodestr = "TranslateRevSub"; break;
case TriBlendMode::AddSrcColorOneMinusSrcColor: blendmodestr = "AddSrcColorOneMinusSrcColor"; break;
}
FString info;

7
tools/drawergen/fixedfunction/drawercodegen.cpp
View file

@ -160,3 +160,10 @@ SSAVec4i DrawerCodegen::blend_stencil(SSAVec4i stencilcolor, SSAInt fgalpha, SSA
SSAVec4i color = (stencilcolor * srcalpha + bg * destalpha) / 256;
return color.insert(3, 255);
}
SSAVec4i DrawerCodegen::blend_add_srccolor_oneminussrccolor(SSAVec4i fg, SSAVec4i bg)
{
SSAVec4i fgcolor = fg + (fg >> 7); // 255 -> 256
SSAVec4i inv_fgcolor = SSAVec4i(256) - fgcolor;
return fg + (bg * inv_fgcolor + 128) >> 8;
}

1
tools/drawergen/fixedfunction/drawercodegen.h
View file

@ -86,6 +86,7 @@ public:
SSAVec4i blend_revsub(SSAVec4i fg, SSAVec4i bg, SSAInt srcalpha, SSAInt destalpha);
SSAVec4i blend_alpha_blend(SSAVec4i fg, SSAVec4i bg);
SSAVec4i blend_stencil(SSAVec4i color, SSAInt fgalpha, SSAVec4i bg, SSAInt srcalpha, SSAInt destalpha);
SSAVec4i blend_add_srccolor_oneminussrccolor(SSAVec4i fg, SSAVec4i bg);
// Calculates the final alpha values to be used when combined with the source texture alpha channel
SSAInt calc_blend_bgalpha(SSAVec4i fg, SSAInt destalpha);

10
tools/drawergen/fixedfunction/drawtrianglecodegen.cpp
View file

@ -670,6 +670,10 @@ SSAVec4i DrawTriangleCodegen::ProcessPixel32(SSAVec4i bg, SSAInt *varying)
fg = TranslateSample32(uvoffset);
output = blend_revsub(shade_bgra_simple(fg, currentlight), bg, srcalpha, calc_blend_bgalpha(fg, destalpha));
break;
case TriBlendMode::AddSrcColorOneMinusSrcColor:
fg = Sample32(uvoffset);
output = blend_add_srccolor_oneminussrccolor(shade_bgra_simple(fg, currentlight), bg);
break;
}
return output;
@ -771,6 +775,12 @@ SSAInt DrawTriangleCodegen::ProcessPixel8(SSAInt bg, SSAInt *varying)
output = ToPal8(blend_revsub(fg, ToBgra(bg), srcalpha, calc_blend_bgalpha(fg, destalpha)));
output = (palindex == SSAInt(0)).select(bg, output);
break;
case TriBlendMode::AddSrcColorOneMinusSrcColor:
palindex = Sample8(uvoffset);
fg = ToBgra(Shade8(palindex));
output = ToPal8(blend_add_srccolor_oneminussrccolor(fg, ToBgra(bg)));
output = (palindex == SSAInt(0)).select(bg, output);
break;
}
return output;