mirror of
https://github.com/ZDoom/raze-gles.git
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129 lines
3.2 KiB
C++
129 lines
3.2 KiB
C++
// "Build Engine & Tools" Copyright (c) 1993-1997 Ken Silverman
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// Ken Silverman's official web site: "http://www.advsys.net/ken"
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// See the included license file "BUILDLIC.TXT" for license info.
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//
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// This file has been modified from Ken Silverman's original release
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// by Jonathon Fowler (jf@jonof.id.au)
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// by the EDuke32 team (development@voidpoint.com)
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#include "build.h"
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#include "compat.h"
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#include "baselayer.h"
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#include "matrix.h"
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#include "../../glbackend/glbackend.h"
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//
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// drawline256
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//
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#ifdef USE_OPENGL
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static void drawlinegl(int32_t x1, int32_t y1, int32_t x2, int32_t y2, palette_t p)
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{
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// setpolymost2dview(); // JBF 20040205: more efficient setup
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int const dx = x2-x1;
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int const dy = y2-y1;
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if (dx >= 0)
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{
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if ((x1 >= wx2) || (x2 < wx1)) return;
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if (x1 < wx1) y1 += scale(wx1-x1, dy, dx), x1 = wx1;
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if (x2 > wx2) y2 += scale(wx2-x2, dy, dx), x2 = wx2;
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}
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else
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{
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if ((x2 >= wx2) || (x1 < wx1)) return;
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if (x2 < wx1) y2 += scale(wx1-x2, dy, dx), x2 = wx1;
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if (x1 > wx2) y1 += scale(wx2-x1, dy, dx), x1 = wx2;
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}
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if (dy >= 0)
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{
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if ((y1 >= wy2) || (y2 < wy1)) return;
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if (y1 < wy1) x1 += scale(wy1-y1, dx, dy), y1 = wy1;
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if (y2 > wy2) x2 += scale(wy2-y2, dx, dy), y2 = wy2;
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}
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else
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{
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if ((y2 >= wy2) || (y1 < wy1)) return;
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if (y2 < wy1) x2 += scale(wy1-y2, dx, dy), y2 = wy1;
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if (y1 > wy2) x1 += scale(wy2-y1, dx, dy), y1 = wy2;
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}
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GLInterface.SetViewport(0, 0, xdim, ydim);
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VSMatrix proj(0);
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proj.ortho(0, xdim, ydim, 0, -1, 1);
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GLInterface.SetMatrix(Matrix_Projection, &proj);
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gloy1 = -1;
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GLInterface.EnableAlphaTest(false);
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GLInterface.EnableDepthTest(false);
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GLInterface.EnableBlend(true); // When using line antialiasing, this is needed
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GLInterface.UseColorOnly(true);
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GLInterface.SetColorub(p.r, p.g, p.b, 255);
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auto data = GLInterface.AllocVertices(2);
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data.second[0].Set((float) x1 * (1.f/4096.f), (float) y1 * (1.f/4096.f));
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data.second[1].Set((float) x2 * (1.f/4096.f), (float) y2 * (1.f/4096.f));
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GLInterface.Draw(DT_LINES, data.first, 2);
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GLInterface.UseColorOnly(false);
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}
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#endif
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void drawlinergb(int32_t x1, int32_t y1, int32_t x2, int32_t y2, palette_t p)
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{
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#ifdef USE_OPENGL
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if (videoGetRenderMode() >= REND_POLYMOST)
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{
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drawlinegl(x1, y1, x2, y2, p);
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return;
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}
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#endif
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//char const col = palookup[0][p.f];
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//drawlinepixels(x1, y1, x2, y2, col);
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}
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void renderDrawLine(int32_t x1, int32_t y1, int32_t x2, int32_t y2, uint8_t col)
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{
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col = palookup[0][col];
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#ifdef USE_OPENGL
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if (videoGetRenderMode() >= REND_POLYMOST)
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{
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palette_t p = paletteGetColor(col);
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p.f = col;
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drawlinegl(x1, y1, x2, y2, p);
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return;
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}
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#endif
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//drawlinepixels(x1, y1, x2, y2, col);
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}
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//
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// setpolymost2dview
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// Sets OpenGL for 2D drawing
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//
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void polymostSet2dView(void)
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{
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#ifdef USE_OPENGL
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if (videoGetRenderMode() < REND_POLYMOST) return;
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GLInterface.SetViewport(0, 0, xdim, ydim);
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VSMatrix proj(0);
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proj.ortho(0, xdim, ydim, 0, -1, 1);
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GLInterface.SetMatrix(Matrix_Projection, &proj);
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gloy1 = -1;
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GLInterface.EnableDepthTest(false);
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GLInterface.EnableBlend(false);
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#endif
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}
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