mirror of https://github.com/ZDoom/raze-gles.git
604 lines
17 KiB
C++
604 lines
17 KiB
C++
//
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//---------------------------------------------------------------------------
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//
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// Copyright(C) 2016-2018 Christoph Oelckers
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// All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with this program. If not, see http://www.gnu.org/licenses/
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//
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//--------------------------------------------------------------------------
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//
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/*
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** v_2ddrawer.h
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** Device independent 2D draw list
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**
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**/
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#include <stdarg.h>
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#include "c_cvars.h"
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#include "v_2ddrawer.h"
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#include "renderstyle.h"
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#include "drawparms.h"
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#include "vectors.h"
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#include "gamecvars.h"
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//#include "doomtype.h"
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#include "templates.h"
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//#include "r_utility.h"
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//#include "v_video.h"
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//#include "g_levellocals.h"
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//#include "vm.h"
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F2DDrawer twod;
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//==========================================================================
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//
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//
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//
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//==========================================================================
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int F2DDrawer::AddCommand(const RenderCommand *data)
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{
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if (mData.Size() > 0 && data->isCompatible(mData.Last()))
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{
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// Merge with the last command.
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mData.Last().mIndexCount += data->mIndexCount;
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mData.Last().mVertCount += data->mVertCount;
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return mData.Size();
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}
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else
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{
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return mData.Push(*data);
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}
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void F2DDrawer::AddIndices(int firstvert, int count, ...)
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{
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va_list ap;
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va_start(ap, count);
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int addr = mIndices.Reserve(count);
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for (int i = 0; i < count; i++)
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{
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mIndices[addr + i] = firstvert + va_arg(ap, int);
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}
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}
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//==========================================================================
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//
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// SetStyle
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//
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// Patterned after R_SetPatchStyle.
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//
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//==========================================================================
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bool F2DDrawer::SetStyle(FTexture *tex, DrawParms &parms, PalEntry &vertexcolor, RenderCommand &quad)
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{
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FRenderStyle style = parms.style;
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float alpha;
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bool stencilling;
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if (style.Flags & STYLEF_Alpha1)
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{
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alpha = 1;
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}
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else
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{
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alpha = clamp(parms.Alpha, 0.f, 1.f);
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}
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style.CheckFuzz();
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if (style.BlendOp == STYLEOP_Shadow || style.BlendOp == STYLEOP_Fuzz)
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{
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style = LegacyRenderStyles[STYLE_TranslucentStencil];
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alpha = 0.3f;
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parms.fillcolor = 0;
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}
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else if (style.BlendOp == STYLEOP_FuzzOrAdd)
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{
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style.BlendOp = STYLEOP_Add;
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}
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else if (style.BlendOp == STYLEOP_FuzzOrSub)
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{
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style.BlendOp = STYLEOP_Sub;
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}
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else if (style.BlendOp == STYLEOP_FuzzOrRevSub)
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{
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style.BlendOp = STYLEOP_RevSub;
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}
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stencilling = false;
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if (style.Flags & STYLEF_InvertOverlay)
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{
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// Only the overlay color is inverted, not the overlay alpha.
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parms.colorOverlay.r = 255 - parms.colorOverlay.r;
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parms.colorOverlay.g = 255 - parms.colorOverlay.g;
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parms.colorOverlay.b = 255 - parms.colorOverlay.b;
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}
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SetColorOverlay(parms.colorOverlay, alpha, vertexcolor, quad.mColor1);
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if (style.Flags & STYLEF_ColorIsFixed)
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{
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if (style.Flags & STYLEF_InvertSource)
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{ // Since the source color is a constant, we can invert it now
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// without spending time doing it in the shader.
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parms.fillcolor.r = 255 - parms.fillcolor.r;
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parms.fillcolor.g = 255 - parms.fillcolor.g;
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parms.fillcolor.b = 255 - parms.fillcolor.b;
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style.Flags &= ~STYLEF_InvertSource;
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}
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if (parms.desaturate > 0)
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{
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// Desaturation can also be computed here without having to do it in the shader.
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auto gray = parms.fillcolor.Luminance();
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auto notgray = 255 - gray;
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parms.fillcolor.r = uint8_t((parms.fillcolor.r * notgray + gray * 255) / 255);
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parms.fillcolor.g = uint8_t((parms.fillcolor.g * notgray + gray * 255) / 255);
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parms.fillcolor.b = uint8_t((parms.fillcolor.b * notgray + gray * 255) / 255);
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parms.desaturate = 0;
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}
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// Set up the color mod to replace the color from the image data.
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vertexcolor.r = parms.fillcolor.r;
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vertexcolor.g = parms.fillcolor.g;
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vertexcolor.b = parms.fillcolor.b;
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if (style.Flags & STYLEF_RedIsAlpha)
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{
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quad.mDrawMode = TM_ALPHATEXTURE;
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}
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else
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{
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quad.mDrawMode = TM_STENCIL;
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}
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}
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else
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{
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if (style.Flags & STYLEF_RedIsAlpha)
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{
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quad.mDrawMode = TM_ALPHATEXTURE;
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}
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else if (style.Flags & STYLEF_InvertSource)
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{
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quad.mDrawMode = TM_INVERSE;
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}
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quad.mDesaturate = parms.desaturate;
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}
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// apply the element's own color. This is being blended with anything that came before.
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vertexcolor = PalEntry((vertexcolor.a * parms.color.a) / 255, (vertexcolor.r * parms.color.r) / 255, (vertexcolor.g * parms.color.g) / 255, (vertexcolor.b * parms.color.b) / 255);
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if (!parms.masked)
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{
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// For TM_ALPHATEXTURE and TM_STENCIL the mask cannot be turned off because it would not yield a usable result.
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if (quad.mDrawMode == TM_NORMAL) quad.mDrawMode = TM_OPAQUE;
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else if (quad.mDrawMode == TM_INVERSE) quad.mDrawMode = TM_INVERTOPAQUE;
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}
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quad.mRenderStyle = parms.style; // this contains the blend mode and blend equation settings.
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if (parms.burn) quad.mFlags |= DTF_Burn;
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return true;
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}
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//==========================================================================
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//
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// Draws a texture
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//
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//==========================================================================
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void F2DDrawer::SetColorOverlay(PalEntry color, float alpha, PalEntry &vertexcolor, PalEntry &overlaycolor)
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{
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if (color.a != 0 && (color & 0xffffff) != 0)
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{
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// overlay color uses premultiplied alpha.
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int a = color.a * 256 / 255;
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overlaycolor.r = (color.r * a) >> 8;
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overlaycolor.g = (color.g * a) >> 8;
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overlaycolor.b = (color.b * a) >> 8;
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overlaycolor.a = 0; // The overlay gets added on top of the texture data so to preserve the pixel's alpha this must be 0.
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}
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else
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{
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overlaycolor = 0;
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}
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// Vertex intensity is the inverse of the overlay so that the shader can do a simple addition to combine them.
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uint8_t light = 255 - color.a;
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vertexcolor = PalEntry(int(alpha * 255), light, light, light);
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// The real color gets multiplied into vertexcolor later.
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}
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//==========================================================================
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//
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// Draws a texture
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//
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//==========================================================================
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void F2DDrawer::AddTexture(FTexture *img, DrawParms &parms)
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{
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if (parms.style.BlendOp == STYLEOP_None) return; // not supposed to be drawn.
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double xscale = parms.destwidth / parms.texwidth;
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double yscale = parms.destheight / parms.texheight;
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double x = parms.x - parms.left * xscale;
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double y = parms.y - parms.top * yscale;
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double w = parms.destwidth;
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double h = parms.destheight;
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double u1, v1, u2, v2;
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PalEntry vertexcolor;
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RenderCommand dg;
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dg.mType = DrawTypeTriangles;
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dg.mVertCount = 4;
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dg.mTexture = img;
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dg.mRemapIndex = parms.remap;
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SetStyle(img, parms, vertexcolor, dg);
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u1 = parms.srcx;
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v1 = parms.srcy;
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u2 = parms.srcx + parms.srcwidth;
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v2 = parms.srcy + parms.srcheight;
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if (parms.flipX)
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std::swap(u1, u2);
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if (parms.flipY)
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std::swap(v1, v2);
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// This is crap. Only kept for backwards compatibility with scripts that may have used it.
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// Note that this only works for unflipped full textures.
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if (parms.windowleft > 0 || parms.windowright < parms.texwidth)
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{
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double wi = std::min(parms.windowright, parms.texwidth);
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x += parms.windowleft * xscale;
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w -= (parms.texwidth - wi + parms.windowleft) * xscale;
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u1 = float(u1 + parms.windowleft / parms.texwidth);
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u2 = float(u2 - (parms.texwidth - wi) / parms.texwidth);
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}
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if (x < (double)parms.lclip || y < (double)parms.uclip || x + w >(double)parms.rclip || y + h >(double)parms.dclip)
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{
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dg.mScissor[0] = parms.lclip;
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dg.mScissor[1] = parms.uclip;
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dg.mScissor[2] = parms.rclip;
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dg.mScissor[3] = parms.dclip;
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dg.mFlags |= DTF_Scissor;
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}
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else
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{
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memset(dg.mScissor, 0, sizeof(dg.mScissor));
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}
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dg.mVertCount = 4;
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dg.mVertIndex = (int)mVertices.Reserve(4);
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TwoDVertex *ptr = &mVertices[dg.mVertIndex];
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ptr->Set(x, y, 0, u1, v1, vertexcolor); ptr++;
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ptr->Set(x, y + h, 0, u1, v2, vertexcolor); ptr++;
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ptr->Set(x + w, y, 0, u2, v1, vertexcolor); ptr++;
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ptr->Set(x + w, y + h, 0, u2, v2, vertexcolor); ptr++;
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dg.mIndexIndex = mIndices.Size();
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dg.mIndexCount += 6;
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AddIndices(dg.mVertIndex, 6, 0, 1, 2, 1, 3, 2);
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AddCommand(&dg);
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void F2DDrawer::AddPoly(FTexture *texture, FVector2 *points, int npoints,
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double originx, double originy, double scalex, double scaley,
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DAngle rotation, int colormap, PalEntry flatcolor, int lightlevel,
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uint32_t *indices, size_t indexcount)
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{
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// Use an equation similar to player sprites to determine shade
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// Convert a light level into an unbounded colormap index (shade).
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// Why the +12? I wish I knew, but experimentation indicates it
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// is necessary in order to best reproduce Doom's original lighting.
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double fadelevel;
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// The hardware renderer's light modes 0, 1 and 4 use a linear light scale which must be used here as well. Otherwise the automap gets too dark.
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fadelevel = 1. - clamp(lightlevel, 0, 255) / 255.f;
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RenderCommand poly;
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poly.mType = DrawTypeTriangles;
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poly.mTexture = texture;
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poly.mRenderStyle = DefaultRenderStyle();
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poly.mFlags |= DTF_Wrap;
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poly.mDesaturate = 0;
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PalEntry color0;
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double invfade = 1. - fadelevel;
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color0.r = uint8_t(flatcolor.r * invfade);
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color0.g = uint8_t(flatcolor.g * invfade);
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color0.b = uint8_t(flatcolor.b * invfade);
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color0.a = 255;
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poly.mColor1 = 0;
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bool dorotate = rotation != 0;
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float cosrot = (float)cos(rotation.Radians());
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float sinrot = (float)sin(rotation.Radians());
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float uscale = float(1.f / (texture->GetWidth() * scalex));
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float vscale = float(1.f / (texture->GetHeight() * scaley));
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float ox = float(originx);
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float oy = float(originy);
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poly.mVertCount = npoints;
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poly.mVertIndex = (int)mVertices.Reserve(npoints);
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for (int i = 0; i < npoints; ++i)
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{
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float u = points[i].X - 0.5f - ox;
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float v = points[i].Y - 0.5f - oy;
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if (dorotate)
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{
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float t = u;
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u = t * cosrot - v * sinrot;
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v = v * cosrot + t * sinrot;
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}
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mVertices[poly.mVertIndex+i].Set(points[i].X, points[i].Y, 0, u*uscale, v*vscale, color0);
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}
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poly.mIndexIndex = mIndices.Size();
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if (indices == nullptr || indexcount == 0)
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{
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poly.mIndexCount += (npoints - 2) * 3;
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for (int i = 2; i < npoints; ++i)
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{
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AddIndices(poly.mVertIndex, 3, 0, i - 1, i);
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}
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}
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else
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{
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poly.mIndexCount += (int)indexcount;
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int addr = mIndices.Reserve(indexcount);
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for (size_t i = 0; i < indexcount; i++)
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{
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mIndices[addr + i] = poly.mVertIndex + indices[i];
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}
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}
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AddCommand(&poly);
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void F2DDrawer::AddFlatFill(int left, int top, int right, int bottom, FTexture *src, bool local_origin)
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{
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float fU1, fU2, fV1, fV2;
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RenderCommand dg;
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dg.mType = DrawTypeTriangles;
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dg.mRenderStyle = DefaultRenderStyle();
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dg.mTexture = src;
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dg.mVertCount = 4;
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dg.mTexture = src;
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dg.mFlags = DTF_Wrap;
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// scaling is not used here.
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if (!local_origin)
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{
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fU1 = float(left) / src->GetWidth();
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fV1 = float(top) / src->GetHeight();
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fU2 = float(right) / src->GetWidth();
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fV2 = float(bottom) / src->GetHeight();
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}
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else
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{
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fU1 = 0;
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fV1 = 0;
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fU2 = float(right - left) / src->GetWidth();
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fV2 = float(bottom - top) / src->GetHeight();
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}
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dg.mVertIndex = (int)mVertices.Reserve(4);
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auto ptr = &mVertices[dg.mVertIndex];
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ptr->Set(left, top, 0, fU1, fV1, 0xffffffff); ptr++;
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ptr->Set(left, bottom, 0, fU1, fV2, 0xffffffff); ptr++;
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ptr->Set(right, top, 0, fU2, fV1, 0xffffffff); ptr++;
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ptr->Set(right, bottom, 0, fU2, fV2, 0xffffffff); ptr++;
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dg.mIndexIndex = mIndices.Size();
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dg.mIndexCount += 6;
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AddIndices(dg.mVertIndex, 6, 0, 1, 2, 1, 3, 2);
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AddCommand(&dg);
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}
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//===========================================================================
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//
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//
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//
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//===========================================================================
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void F2DDrawer::AddColorOnlyQuad(int x1, int y1, int w, int h, PalEntry color, FRenderStyle *style)
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{
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RenderCommand dg;
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dg.mType = DrawTypeTriangles;
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dg.mVertCount = 4;
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dg.mVertIndex = (int)mVertices.Reserve(4);
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dg.mRenderStyle = style? *style : LegacyRenderStyles[STYLE_Translucent];
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auto ptr = &mVertices[dg.mVertIndex];
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ptr->Set(x1, y1, 0, 0, 0, color); ptr++;
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ptr->Set(x1, y1 + h, 0, 0, 0, color); ptr++;
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ptr->Set(x1 + w, y1, 0, 0, 0, color); ptr++;
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ptr->Set(x1 + w, y1 + h, 0, 0, 0, color); ptr++;
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dg.mIndexIndex = mIndices.Size();
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dg.mIndexCount += 6;
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AddIndices(dg.mVertIndex, 6, 0, 1, 2, 1, 3, 2);
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AddCommand(&dg);
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void F2DDrawer::AddLine(int x1, int y1, int x2, int y2, uint32_t color, uint8_t alpha)
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{
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PalEntry p = (PalEntry)color;
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p.a = alpha;
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RenderCommand dg;
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dg.mType = DrawTypeLines;
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dg.mRenderStyle = LegacyRenderStyles[STYLE_Translucent];
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dg.mVertCount = 2;
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dg.mVertIndex = (int)mVertices.Reserve(2);
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mVertices[dg.mVertIndex].Set(x1, y1, 0, 0, 0, p);
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mVertices[dg.mVertIndex+1].Set(x2, y2, 0, 0, 0, p);
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AddCommand(&dg);
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void F2DDrawer::AddThickLine(int x1, int y1, int x2, int y2, double thickness, uint32_t color, uint8_t alpha)
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{
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PalEntry p = (PalEntry)color;
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p.a = alpha;
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DVector2 point0(x1, y1);
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DVector2 point1(x2, y2);
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DVector2 delta = point1 - point0;
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|
DVector2 perp(-delta.Y, delta.X);
|
|
perp.MakeUnit();
|
|
perp *= thickness / 2;
|
|
|
|
DVector2 corner0 = point0 + perp;
|
|
DVector2 corner1 = point0 - perp;
|
|
DVector2 corner2 = point1 + perp;
|
|
DVector2 corner3 = point1 - perp;
|
|
|
|
RenderCommand dg;
|
|
|
|
dg.mType = DrawTypeTriangles;
|
|
dg.mVertCount = 4;
|
|
dg.mVertIndex = (int)mVertices.Reserve(4);
|
|
dg.mRenderStyle = LegacyRenderStyles[STYLE_Translucent];
|
|
auto ptr = &mVertices[dg.mVertIndex];
|
|
ptr->Set(corner0.X, corner0.Y, 0, 0, 0, p); ptr++;
|
|
ptr->Set(corner1.X, corner1.Y, 0, 0, 0, p); ptr++;
|
|
ptr->Set(corner2.X, corner2.Y, 0, 0, 0, p); ptr++;
|
|
ptr->Set(corner3.X, corner3.Y, 0, 0, 0, p); ptr++;
|
|
dg.mIndexIndex = mIndices.Size();
|
|
dg.mIndexCount += 6;
|
|
AddIndices(dg.mVertIndex, 6, 0, 1, 2, 1, 3, 2);
|
|
AddCommand(&dg);
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
//
|
|
//
|
|
//==========================================================================
|
|
|
|
void F2DDrawer::AddPixel(int x1, int y1, uint32_t color)
|
|
{
|
|
PalEntry p = (PalEntry)color;
|
|
p.a = 255;
|
|
|
|
RenderCommand dg;
|
|
|
|
dg.mType = DrawTypePoints;
|
|
dg.mRenderStyle = LegacyRenderStyles[STYLE_Translucent];
|
|
dg.mVertCount = 1;
|
|
dg.mVertIndex = (int)mVertices.Reserve(1);
|
|
mVertices[dg.mVertIndex].Set(x1, y1, 0, 0, 0, p);
|
|
AddCommand(&dg);
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
//
|
|
//
|
|
//==========================================================================
|
|
|
|
void F2DDrawer::Clear()
|
|
{
|
|
mVertices.Clear();
|
|
mIndices.Clear();
|
|
mData.Clear();
|
|
mIsFirstPass = true;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
//
|
|
//
|
|
//==========================================================================
|
|
|
|
|
|
#include "build.h"
|
|
#include "../src/engine_priv.h"
|
|
|
|
void F2DDrawer::rotatesprite(int32_t sx, int32_t sy, int32_t z, int16_t a, int16_t picnum,
|
|
int8_t dashade, uint8_t dapalnum, int32_t dastat, uint8_t daalpha, uint8_t dablend,
|
|
int32_t cx1, int32_t cy1, int32_t cx2, int32_t cy2)
|
|
{
|
|
if (r_rotatespritenowidescreen)
|
|
{
|
|
dastat |= RS_STRETCH;
|
|
dastat &= ~RS_ALIGN_MASK;
|
|
}
|
|
|
|
// This is mainly a hack because the rotatesprite code is far too messed up to integrate into the 2D drawer.
|
|
// This merely stores the parameters and later just calls polymost_rotatesprite do do the work.
|
|
// Cleanup can be done once everything is working.
|
|
RenderCommand dg;
|
|
|
|
dg.mType = DrawTypeRotateSprite;
|
|
|
|
// Just store the values in the otherwise useless fields of the draw command instead of allocating separate memory.
|
|
dg.mVertIndex = sx;
|
|
dg.mVertCount = sy;
|
|
dg.mIndexIndex = z;
|
|
dg.mIndexCount = a;
|
|
dg.mSpecialColormap[0].d = picnum;
|
|
dg.mRemapIndex = dashade;
|
|
dg.mFlags = dapalnum;
|
|
dg.mSpecialColormap[1].d = dastat;
|
|
dg.mDesaturate = daalpha;
|
|
dg.mColor1.d = dablend;
|
|
dg.mScissor[0] = cx1;
|
|
dg.mScissor[1] = cy1;
|
|
dg.mScissor[2] = cx2;
|
|
dg.mScissor[3] = cy2;
|
|
mData.Push(dg); // don't even try to merge.
|
|
}
|
|
|