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https://github.com/ZDoom/Raze.git
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238 lines
7.2 KiB
C++
238 lines
7.2 KiB
C++
/*
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** hw_draw2d.cpp
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** 2d drawer Renderer interface
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**
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**---------------------------------------------------------------------------
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** Copyright 2018-2019 Christoph Oelckers
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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#include "v_video.h"
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#include "cmdlib.h"
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#include "hwrenderer/data/buffers.h"
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#include "flatvertices.h"
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#include "hwrenderer/data/hw_viewpointbuffer.h"
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#include "hw_clock.h"
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#include "hw_cvars.h"
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#include "hw_renderstate.h"
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#include "r_videoscale.h"
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#include "v_draw.h"
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//===========================================================================
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//
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// Draws the 2D stuff. This is the version for OpenGL 3 and later.
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//
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//===========================================================================
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CVAR(Bool, gl_aalines, false, CVAR_ARCHIVE)
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void Draw2D(F2DDrawer *drawer, FRenderState &state)
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{
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twoD.Clock();
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const auto &mScreenViewport = screen->mScreenViewport;
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state.SetViewport(mScreenViewport.left, mScreenViewport.top, mScreenViewport.width, mScreenViewport.height);
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screen->mViewpoints->Set2D(state, twod->GetWidth(), twod->GetHeight());
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state.EnableDepthTest(false);
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state.EnableMultisampling(false);
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state.EnableLineSmooth(gl_aalines);
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auto &vertices = drawer->mVertices;
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auto &indices = drawer->mIndices;
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auto &commands = drawer->mData;
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if (commands.Size() == 0)
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{
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twoD.Unclock();
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return;
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}
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if (drawer->mIsFirstPass)
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{
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for (auto &v : vertices)
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{
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// Change from BGRA to RGBA
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std::swap(v.color0.r, v.color0.b);
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}
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}
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F2DVertexBuffer vb;
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vb.UploadData(&vertices[0], vertices.Size(), &indices[0], indices.Size());
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state.SetVertexBuffer(&vb);
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state.EnableFog(false);
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for(auto &cmd : commands)
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{
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int gltrans = -1;
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state.SetRenderStyle(cmd.mRenderStyle);
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state.EnableBrightmap(!(cmd.mRenderStyle.Flags & STYLEF_ColorIsFixed));
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state.EnableFog(2); // Special 2D mode 'fog'.
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state.SetScreenFade(cmd.mScreenFade);
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state.SetTextureMode(cmd.mDrawMode);
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int sciX, sciY, sciW, sciH;
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if (cmd.mFlags & F2DDrawer::DTF_Scissor)
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{
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// scissor test doesn't use the current viewport for the coordinates, so use real screen coordinates
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// Note that the origin here is the lower left corner!
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sciX = screen->ScreenToWindowX(cmd.mScissor[0]);
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sciY = screen->ScreenToWindowY(cmd.mScissor[3]);
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sciW = screen->ScreenToWindowX(cmd.mScissor[2]) - sciX;
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sciH = screen->ScreenToWindowY(cmd.mScissor[1]) - sciY;
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// If coordinates turn out negative, clip to sceen here to avoid undefined behavior.
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if (sciX < 0) sciW += sciX, sciX = 0;
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if (sciY < 0) sciH += sciY, sciY = 0;
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}
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else
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{
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sciX = sciY = sciW = sciH = -1;
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}
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state.SetScissor(sciX, sciY, sciW, sciH);
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if (cmd.mSpecialColormap[0].a != 0)
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{
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state.SetTextureMode(TM_FIXEDCOLORMAP);
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state.SetObjectColor(cmd.mSpecialColormap[0]);
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state.SetAddColor(cmd.mSpecialColormap[1]);
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}
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state.SetFog(cmd.mColor1, 0);
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state.SetColor(1, 1, 1, 1, cmd.mDesaturate);
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if (cmd.mFlags & F2DDrawer::DTF_Indexed) state.SetSoftLightLevel(cmd.mLightLevel);
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state.SetLightParms(0, 0);
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state.AlphaFunc(Alpha_GEqual, 0.f);
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if (cmd.useTransform)
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{
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FLOATTYPE m[16] = {
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0.0, 0.0, 0.0, 0.0,
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0.0, 0.0, 0.0, 0.0,
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0.0, 0.0, 1.0, 0.0,
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0.0, 0.0, 0.0, 1.0
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};
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for (size_t i = 0; i < 2; i++)
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{
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for (size_t j = 0; j < 2; j++)
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{
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m[4 * j + i] = (FLOATTYPE) cmd.transform.Cells[i][j];
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}
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}
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for (size_t i = 0; i < 2; i++)
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{
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m[4 * 3 + i] = (FLOATTYPE) cmd.transform.Cells[i][2];
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}
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state.mModelMatrix.loadMatrix(m);
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state.EnableModelMatrix(true);
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}
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if (cmd.mTexture != nullptr && cmd.mTexture->isValid())
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{
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auto flags = cmd.mTexture->GetUseType() >= ETextureType::Special? UF_None : cmd.mTexture->GetUseType() == ETextureType::FontChar? UF_Font : UF_Texture;
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auto scaleflags = cmd.mFlags & F2DDrawer::DTF_Indexed ? CTF_Indexed : 0;
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state.SetMaterial(cmd.mTexture, flags, scaleflags, cmd.mFlags & F2DDrawer::DTF_Wrap ? CLAMP_NONE : CLAMP_XY_NOMIP, cmd.mTranslationId, -1);
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state.EnableTexture(true);
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// Canvas textures are stored upside down
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if (cmd.mTexture->isHardwareCanvas())
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{
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state.mTextureMatrix.loadIdentity();
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state.mTextureMatrix.scale(1.f, -1.f, 1.f);
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state.mTextureMatrix.translate(0.f, 1.f, 0.0f);
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state.EnableTextureMatrix(true);
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}
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if (cmd.mFlags & F2DDrawer::DTF_Burn)
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{
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state.SetEffect(EFF_BURN);
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}
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}
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else
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{
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state.EnableTexture(false);
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}
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if (cmd.shape2D != nullptr)
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{
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state.SetVertexBuffer(&cmd.shape2D->buffers[cmd.shape2DBufIndex]);
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state.DrawIndexed(DT_Triangles, 0, cmd.shape2DIndexCount);
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state.SetVertexBuffer(&vb);
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if (cmd.shape2DCommandCounter == cmd.shape2D->lastCommand)
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{
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cmd.shape2D->lastCommand = -1;
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if (cmd.shape2D->bufIndex > 0)
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{
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cmd.shape2D->needsVertexUpload = true;
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cmd.shape2D->buffers.Clear();
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cmd.shape2D->bufIndex = -1;
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}
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}
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cmd.shape2D->uploadedOnce = false;
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}
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else
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{
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switch (cmd.mType)
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{
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default:
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case F2DDrawer::DrawTypeTriangles:
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state.DrawIndexed(DT_Triangles, cmd.mIndexIndex, cmd.mIndexCount);
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break;
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case F2DDrawer::DrawTypeLines:
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state.Draw(DT_Lines, cmd.mVertIndex, cmd.mVertCount);
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break;
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case F2DDrawer::DrawTypePoints:
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state.Draw(DT_Points, cmd.mVertIndex, cmd.mVertCount);
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break;
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}
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}
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state.SetObjectColor(0xffffffff);
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state.SetObjectColor2(0);
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state.SetAddColor(0);
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state.EnableTextureMatrix(false);
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state.EnableModelMatrix(false);
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state.SetEffect(EFF_NONE);
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}
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state.SetScissor(-1, -1, -1, -1);
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state.SetRenderStyle(STYLE_Translucent);
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state.SetVertexBuffer(screen->mVertexData);
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state.EnableTexture(true);
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state.EnableBrightmap(true);
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state.SetTextureMode(TM_NORMAL);
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state.EnableFog(false);
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state.SetScreenFade(1);
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state.SetSoftLightLevel(255);
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state.ResetColor();
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drawer->mIsFirstPass = false;
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twoD.Unclock();
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}
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