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https://github.com/ZDoom/gzdoom.git
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Adds 2D shape (triangle array) drawer, usable from ZScript. Handles most drawtexture parameters excluding those related to scaling, at the moment.
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5 changed files with 179 additions and 0 deletions
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@ -31,9 +31,51 @@
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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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EXTERN_CVAR(Float, transsouls)
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IMPLEMENT_CLASS(DShape2D, false, false)
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DEFINE_ACTION_FUNCTION(DShape2D, Clear)
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{
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PARAM_SELF_PROLOGUE(DShape2D);
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PARAM_INT(which);
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if ( which&C_Verts ) self->mVertices.Clear();
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if ( which&C_Coords ) self->mCoords.Clear();
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if ( which&C_Indices ) self->mIndices.Clear();
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return 0;
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}
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DEFINE_ACTION_FUNCTION(DShape2D, PushVertex)
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{
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PARAM_SELF_PROLOGUE(DShape2D);
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PARAM_FLOAT(x);
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PARAM_FLOAT(y);
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self->mVertices.Push(DVector2(x,y));
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return 0;
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}
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DEFINE_ACTION_FUNCTION(DShape2D, PushCoord)
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{
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PARAM_SELF_PROLOGUE(DShape2D);
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PARAM_FLOAT(u);
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PARAM_FLOAT(v);
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self->mCoords.Push(DVector2(u,v));
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return 0;
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}
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DEFINE_ACTION_FUNCTION(DShape2D, PushTriangle)
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{
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PARAM_SELF_PROLOGUE(DShape2D);
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PARAM_INT(a);
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PARAM_INT(b);
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PARAM_INT(c);
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self->mIndices.Push(a);
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self->mIndices.Push(b);
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self->mIndices.Push(c);
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return 0;
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}
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//==========================================================================
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//
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@ -314,6 +356,61 @@ void F2DDrawer::AddTexture(FTexture *img, DrawParms &parms)
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//
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//==========================================================================
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void F2DDrawer::AddShape( FTexture *img, DShape2D *shape, 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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PalEntry vertexcolor;
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RenderCommand dg;
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dg.mType = DrawTypeTriangles;
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dg.mVertCount = shape->mVertices.Size();
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dg.mFlags |= DTF_Wrap;
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dg.mTexture = img;
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dg.mTranslation = 0;
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SetStyle(img, parms, vertexcolor, dg);
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if (!img->bHasCanvas && parms.remap != nullptr && !parms.remap->Inactive)
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dg.mTranslation = parms.remap;
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double minx = 16383, miny = 16383, maxx = -16384, maxy = -16384;
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for ( int i=0; i<dg.mVertCount; i++ )
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{
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if ( shape->mVertices[i].X < minx ) minx = shape->mVertices[i].X;
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if ( shape->mVertices[i].Y < miny ) miny = shape->mVertices[i].Y;
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if ( shape->mVertices[i].X > maxx ) maxx = shape->mVertices[i].X;
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if ( shape->mVertices[i].Y > maxy ) maxy = shape->mVertices[i].Y;
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}
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if (minx < (double)parms.lclip || miny < (double)parms.uclip || maxx >(double)parms.rclip || maxy >(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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memset(dg.mScissor, 0, sizeof(dg.mScissor));
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dg.mVertIndex = (int)mVertices.Reserve(dg.mVertCount);
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TwoDVertex *ptr = &mVertices[dg.mVertIndex];
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for ( int i=0; i<dg.mVertCount; i++ )
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ptr[i].Set(shape->mVertices[i].X, shape->mVertices[i].Y, 0, shape->mCoords[i].X, shape->mCoords[i].Y, vertexcolor);
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dg.mIndexIndex = mIndices.Size();
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dg.mIndexCount += shape->mIndices.Size();
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for ( int i=0; i<int(shape->mIndices.Size()); i+=3 )
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AddIndices(dg.mVertIndex, 3, shape->mIndices[i], shape->mIndices[i+1], shape->mIndices[i+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, const FColormap &colormap, PalEntry flatcolor, int lightlevel)
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@ -9,6 +9,25 @@
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struct DrawParms;
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// intermediate struct for shape drawing
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enum EClearWhich
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{
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C_Verts = 1,
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C_Coords = 2,
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C_Indices = 4,
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};
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class DShape2D : public DObject
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{
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DECLARE_CLASS(DShape2D,DObject)
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public:
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TArray<int> mIndices;
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TArray<DVector2> mVertices;
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TArray<DVector2> mCoords;
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};
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class F2DDrawer
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{
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public:
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@ -117,6 +136,7 @@ public:
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public:
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void AddTexture(FTexture *img, DrawParms &parms);
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void AddShape(FTexture *img, DShape2D *shape, DrawParms &parms);
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void 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, const FColormap &colormap, PalEntry flatcolor, int lightlevel);
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@ -189,6 +189,50 @@ void DFrameBuffer::DrawTextureParms(FTexture *img, DrawParms &parms)
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m2DDrawer.AddTexture(img, parms);
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}
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//==========================================================================
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//
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// ZScript arbitrary textured shape drawing functions
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//
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//==========================================================================
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void DFrameBuffer::DrawShape(FTexture *img, DShape2D *shape, int tags_first, ...)
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{
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Va_List tags;
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va_start(tags.list, tags_first);
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DrawParms parms;
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bool res = ParseDrawTextureTags(img, 0, 0, tags_first, tags, &parms, false);
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va_end(tags.list);
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if (!res) return;
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m2DDrawer.AddShape(img, shape, parms);
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}
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void DFrameBuffer::DrawShape(FTexture *img, DShape2D *shape, VMVa_List &args)
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{
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DrawParms parms;
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uint32_t tag = ListGetInt(args);
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bool res = ParseDrawTextureTags(img, 0, 0, tag, args, &parms, false);
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if (!res) return;
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m2DDrawer.AddShape(img, shape, parms);
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}
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DEFINE_ACTION_FUNCTION(_Screen, DrawShape)
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{
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PARAM_PROLOGUE;
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PARAM_INT(texid);
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PARAM_BOOL(animate);
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PARAM_POINTER(shape, DShape2D);
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if (!screen->HasBegun2D()) ThrowAbortException(X_OTHER, "Attempt to draw to screen outside a draw function");
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FTexture *tex = animate ? TexMan(FSetTextureID(texid)) : TexMan[FSetTextureID(texid)];
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VMVa_List args = { param + 3, 0, numparam - 3 };
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screen->DrawShape(tex, shape, args);
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return 0;
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}
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//==========================================================================
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//
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// Clipping rect
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@ -484,6 +484,8 @@ public:
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bool SetTextureParms(DrawParms *parms, FTexture *img, double x, double y) const;
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void DrawTexture(FTexture *img, double x, double y, int tags, ...);
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void DrawTexture(FTexture *img, double x, double y, VMVa_List &);
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void DrawShape(FTexture *img, DShape2D *shape, int tags, ...);
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void DrawShape(FTexture *img, DShape2D *shape, VMVa_List &);
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void FillBorder(FTexture *img); // Fills the border around a 4:3 part of the screen on non-4:3 displays
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void VirtualToRealCoords(double &x, double &y, double &w, double &h, double vwidth, double vheight, bool vbottom = false, bool handleaspect = true) const;
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@ -165,6 +165,21 @@ enum DrawTextureTags
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};
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class Shape2D : Object native
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{
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enum EClearWhich
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{
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C_Verts = 1,
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C_Coords = 2,
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C_Indices = 4,
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};
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native void Clear( int which = C_Verts|C_Coords|C_Indices );
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native void PushVertex( Vector2 v );
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native void PushCoord( Vector2 c );
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native void PushTriangle( int a, int b, int c );
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}
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struct Screen native
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{
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native static Color PaletteColor(int index);
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@ -174,6 +189,7 @@ struct Screen native
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native static void Dim(Color col, double amount, int x, int y, int w, int h);
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native static vararg void DrawTexture(TextureID tex, bool animate, double x, double y, ...);
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native static vararg void DrawShape(TextureID tex, bool animate, Shape2D s, ...);
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native static vararg void DrawChar(Font font, int normalcolor, double x, double y, int character, ...);
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native static vararg void DrawText(Font font, int normalcolor, double x, double y, String text, ...);
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native static void DrawLine(int x0, int y0, int x1, int y1, Color color);
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