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https://github.com/ZDoom/raze-gles.git
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321 lines
11 KiB
C++
321 lines
11 KiB
C++
/*
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** gl_texture.cpp
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** high level GL texture interface
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**
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**---------------------------------------------------------------------------
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** Copyright 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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*/
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#include "palette.h"
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#include "build.h"
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#include "polymost.h"
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#include "textures.h"
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#include "bitmap.h"
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#include "v_font.h"
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#include "palettecontainer.h"
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#include "../../glbackend/glbackend.h"
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#include "texturemanager.h"
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#include "v_video.h"
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// Test CVARs.
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CVAR(Int, fixpalette, -1, 0)
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CVAR(Int, fixpalswap, -1, 0)
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//===========================================================================
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//
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// Retrieve the texture to be used.
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//
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//===========================================================================
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OpenGLRenderer::FHardwareTexture* GLInstance::LoadTexture(FTexture *tex, int textype, int palid)
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{
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if (textype == TT_INDEXED) palid = -1;
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auto phwtex = tex->SystemTextures.GetHardwareTexture(palid, false);
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if (phwtex) return (OpenGLRenderer::FHardwareTexture*)phwtex;
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auto hwtex = static_cast<OpenGLRenderer::FHardwareTexture*>(screen->CreateHardwareTexture(textype == TT_INDEXED? 1:4));
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if (hwtex) tex->SystemTextures.AddHardwareTexture(palid, false, hwtex);
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return hwtex;
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}
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//===========================================================================
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//
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// Sets a texture for rendering. This should be the ONLY place to bind in-game textures
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//
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//===========================================================================
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struct TexturePick
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{
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FGameTexture* texture; // which texture to use
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int translation; // which translation table to use
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int tintFlags; // which shader tinting options to use
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PalEntry tintColor; // Tint color
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PalEntry basepalTint; // can the base palette be done with a global tint effect?
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};
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bool PickTexture(int picnum, FGameTexture *tex, int paletteid, TexturePick &pick)
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{
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if (!tex) tex = tileGetTexture(picnum);
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if (picnum == -1) picnum = TileFiles.GetTileIndex(tex); // Allow getting replacements also when the texture is not passed by its tile number.
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if (!tex->isValid() || tex->GetTexelWidth() <= 0 || tex->GetTexelHeight() <= 0) return false;
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pick.texture = tex;
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int curbasepal = GetTranslationType(paletteid) - Translation_Remap;
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int palette = GetTranslationIndex(paletteid);
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int usepalette = fixpalette >= 0 ? fixpalette : curbasepal;
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int usepalswap = fixpalswap >= 0 ? fixpalswap : palette;
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int TextureType = hw_int_useindexedcolortextures ? TT_INDEXED : TT_TRUECOLOR;
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pick.translation = TRANSLATION(usepalette + Translation_Remap, usepalswap);
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pick.basepalTint = 0xffffff;
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auto& h = lookups.tables[palette];
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bool applytint = false;
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// Canvas textures must be treated like hightile replacements in the following code.
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if (picnum < 0) picnum = TileFiles.GetTileIndex(tex); // Allow getting replacements also when the texture is not passed by its tile number.
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auto rep = (picnum >= 0 && hw_hightile && !(h.tintFlags & TINTF_ALWAYSUSEART)) ? TileFiles.FindReplacement(picnum, palette) : nullptr;
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if (rep || tex->GetTexture()->isHardwareCanvas())
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{
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if (usepalette != 0)
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{
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// This is a global setting for the entire scene, so let's do it here, right at the start. (Fixme: Store this in a static table instead of reusing the same entry for all palettes.)
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auto& hh = lookups.tables[MAXPALOOKUPS - 1];
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// This sets a tinting color for global palettes, e.g. water or slime - only used for hires replacements (also an option for low-resource hardware where duplicating the textures may be problematic.)
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pick.basepalTint = hh.tintColor;
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}
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if (rep)
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{
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tex = rep->faces[0];
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}
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if (!rep || rep->palnum != palette || (h.tintFlags & TINTF_APPLYOVERALTPAL)) applytint = true;
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pick.translation = 0;
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//TextureType = TT_HICREPLACE;
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}
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else
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{
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// Only look up the palette if we really want to use it (i.e. when creating a true color texture of an ART tile.)
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if (TextureType == TT_TRUECOLOR)
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{
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if (h.tintFlags & (TINTF_ALWAYSUSEART | TINTF_USEONART))
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{
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applytint = true;
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if (!(h.tintFlags & TINTF_APPLYOVERPALSWAP)) usepalswap = 0;
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}
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pick.translation = TRANSLATION(usepalette + Translation_Remap, usepalswap);
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}
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else pick.translation |= 0x80000000;
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}
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if (applytint && h.tintFlags)
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{
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pick.tintFlags = h.tintFlags;
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pick.tintColor = h.tintColor;
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}
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else
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{
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pick.tintFlags = -1;
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pick.tintColor = 0xffffff;
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}
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return true;
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}
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bool GLInstance::SetTextureInternal(int picnum, FGameTexture* tex, int paletteid, int method, int sampleroverride, FGameTexture *det, float detscale, FGameTexture *glow)
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{
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TexturePick pick;
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if (!PickTexture(picnum, tex, paletteid, pick)) return false;
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GLInterface.SetPalette(GetTranslationType(pick.translation & 0x7fffffff) - Translation_Remap);
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GLInterface.SetPalswap(GetTranslationIndex(pick.translation));
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GLInterface.SetBasepalTint(pick.basepalTint);
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bool texbound[3] = {};
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//int MatrixChange = 0;
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//VSMatrix texmat;
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// This is intentionally the same value for both parameters. The shader does not use the same uniform for modulation and overlay colors.
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GLInterface.SetTinting(pick.tintFlags, pick.tintColor, pick.tintColor);
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// Load the main texture
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int TextureType = (pick.translation & 0x80000000) ? TT_INDEXED : TT_TRUECOLOR;
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int lookuppal = pick.translation & 0x7fffffff;
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int bindflags = 0;
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auto mtex = LoadTexture(tex->GetTexture(), TextureType, lookuppal);
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if (mtex)
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{
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auto sampler = (method & DAMETH_CLAMPED) ? (sampleroverride != -1 ? sampleroverride : SamplerClampXY) : SamplerRepeat;
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if (TextureType == TT_INDEXED)
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{
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sampler = sampler + SamplerNoFilterRepeat - SamplerRepeat;
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bindflags = CTF_Indexed;
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}
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else if (tex->isHardwareCanvas())
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{
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sampler = CLAMP_CAMTEX;
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}
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UseDetailMapping(false);
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UseGlowMapping(false);
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UseBrightmaps(false);
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mtex->BindOrCreate(tex->GetTexture(), 0, sampler, lookuppal, bindflags);
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BindTexture(0, mtex, sampler);
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// Needs a) testing and b) verification for correctness. This doesn't look like it makes sense.
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#if 0
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if (rep && (rep->scale.x != 1.0f || rep->scale.y != 1.0f))
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{
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//texmat.loadIdentity();
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//texmat.scale(rep->scale.x, rep->scale.y, 1.0f);
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//GLInterface.SetMatrix(Matrix_Texture, &texmat);
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}
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#endif
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// Also load additional layers needed for this texture.
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if (hw_detailmapping && hw_hightile && picnum > -1)
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{
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float detscalex = detscale, detscaley = detscale;
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if (!(method & DAMETH_MODEL))
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{
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auto drep = TileFiles.FindReplacement(picnum, DETAILPAL);
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if (drep)
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{
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det = drep->faces[0];
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detscalex = drep->scale.x;
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detscaley = drep->scale.y;
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}
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}
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if (det)
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{
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auto htex = LoadTexture(det->GetTexture(), TT_HICREPLACE, 0);
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UseDetailMapping(true);
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htex->BindOrCreate(det->GetTexture(), 3, CLAMP_NONE, 0, 0);
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BindTexture(3, htex, SamplerRepeat);
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texbound[0] = true;
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/* todo: instead of a matrix, just pass a two-component uniform. Using a full matrix here is problematic.
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if (MatrixChange & 1) MatrixChange |= 2;
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else texmat.loadIdentity();
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if ((detscalex != 1.0f) || (detscaley != 1.0f))
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{
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texmat.scale(detscalex, detscaley, 1.0f);
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MatrixChange |= 2;
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}
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if (MatrixChange & 2) GLInterface.SetMatrix(Matrix_Detail, &texmat);
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*/
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}
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}
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if (hw_glowmapping && hw_hightile && picnum > -1)
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{
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if (!(method & DAMETH_MODEL))
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{
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auto drep = TileFiles.FindReplacement(picnum, GLOWPAL);
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if (drep)
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{
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glow = drep->faces[0];
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}
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}
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if (glow)
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{
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auto htex = LoadTexture(glow->GetTexture(), TT_HICREPLACE, 0);
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UseGlowMapping(true);
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htex->BindOrCreate(glow->GetTexture(), 4, sampler, 0, CTF_Upscale);
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BindTexture(4, htex, SamplerRepeat);
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texbound[1] = true;
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}
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}
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#if 1
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if (picnum > -1 && !(TileFiles.tiledata[picnum].picanm.sf & PICANM_NOFULLBRIGHT_BIT) && !(globalflags & GLOBAL_NO_GL_FULLBRIGHT))
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{
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if (TextureType == TT_HICREPLACE)
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{
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auto brep = TileFiles.FindReplacement(picnum, BRIGHTPAL);
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if (brep)
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{
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auto mtex = LoadTexture(brep->faces[0]->GetTexture(), TT_HICREPLACE, 0);
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UseBrightmaps(true);
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mtex->BindOrCreate(brep->faces[0]->GetTexture(), 5, sampler, 0, CTF_Upscale);
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BindTexture(5, mtex, sampler);
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texbound[2] = true;
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}
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}
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else if (TextureType == TT_TRUECOLOR)
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{
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auto btex = tex->GetBrightmap();
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if (btex)
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{
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auto htex = LoadTexture(btex, TT_BRIGHTMAP, lookuppal);
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if (htex != nullptr)
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{
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UseBrightmaps(true);
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htex->BindOrCreate(btex, 5, sampler, 0, CTF_Upscale);
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BindTexture(5, htex, sampler);
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texbound[2] = true;
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}
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}
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}
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}
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if (!texbound[0]) UnbindTexture(3);
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if (!texbound[1]) UnbindTexture(4);
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if (!texbound[2]) UnbindTexture(5);
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#endif
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}
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else return false;
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float al = 0.5f;
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if (TextureType == TT_HICREPLACE)
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{
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al = ((unsigned)picnum < MAXTILES&& alphahackarray[picnum] != 0) ? alphahackarray[picnum] * (1.f / 255.f) :
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(tex->alphaThreshold >= 0 ? tex->alphaThreshold * (1.f / 255.f) : 0.f);
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}
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GLInterface.SetAlphaThreshold(al);
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return true;
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}
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//===========================================================================
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//
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// stand-ins for the texture system. Nothing of this is used right now, but needs to be present to satisfy the linker
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//
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//===========================================================================
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int PalCheck(int tex)
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{
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return tex;
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}
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void InitBuildTiles()
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{
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}
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TArray<UserShaderDesc> usershaders;
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