2016-11-08 13:28:58 +00:00
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/*
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** Triangle drawers
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** Copyright (c) 2016 Magnus Norddahl
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**
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** This software is provided 'as-is', without any express or implied
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** warranty. In no event will the authors be held liable for any damages
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** arising from the use of this software.
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**
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** Permission is granted to anyone to use this software for any purpose,
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** including commercial applications, and to alter it and redistribute it
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** freely, subject to the following restrictions:
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**
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** 1. The origin of this software must not be misrepresented; you must not
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** claim that you wrote the original software. If you use this software
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** in a product, an acknowledgment in the product documentation would be
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** appreciated but is not required.
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** 2. Altered source versions must be plainly marked as such, and must not be
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** misrepresented as being the original software.
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** 3. This notice may not be removed or altered from any source distribution.
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**
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*/
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2016-11-20 00:51:08 +00:00
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#pragma once
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2016-11-08 13:28:58 +00:00
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2016-12-27 05:31:55 +00:00
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#include "swrenderer/drawers/r_draw.h"
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#include "swrenderer/drawers/r_thread.h"
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#include "swrenderer/drawers/r_drawers.h"
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2016-11-19 12:32:57 +00:00
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#include "r_data/r_translate.h"
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2016-11-20 03:06:21 +00:00
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#include "r_data/colormaps.h"
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2016-11-08 13:28:58 +00:00
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2016-11-20 01:07:55 +00:00
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class FTexture;
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enum class TriangleDrawMode
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{
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Normal,
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Fan,
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Strip
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};
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2016-11-11 19:12:09 +00:00
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struct TriDrawTriangleArgs;
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2016-11-26 09:49:29 +00:00
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struct TriMatrix;
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2016-11-08 13:28:58 +00:00
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2016-11-11 17:24:59 +00:00
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class PolyDrawArgs
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{
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public:
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TriUniforms uniforms;
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2016-11-20 01:07:55 +00:00
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const TriMatrix *objectToClip = nullptr;
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2016-11-11 17:24:59 +00:00
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const TriVertex *vinput = nullptr;
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int vcount = 0;
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TriangleDrawMode mode = TriangleDrawMode::Normal;
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bool ccw = false;
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2016-12-15 23:35:45 +00:00
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// bool stencilTest = true; // Always true for now
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bool subsectorTest = false;
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bool writeStencil = true;
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bool writeColor = true;
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bool writeSubsector = true;
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2016-11-11 17:24:59 +00:00
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const uint8_t *texturePixels = nullptr;
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int textureWidth = 0;
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int textureHeight = 0;
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2016-11-19 01:53:32 +00:00
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const uint8_t *translation = nullptr;
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2016-11-11 18:26:28 +00:00
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uint8_t stenciltestvalue = 0;
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uint8_t stencilwritevalue = 0;
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2016-11-20 03:06:21 +00:00
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const uint8_t *colormaps = nullptr;
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2016-11-26 09:49:29 +00:00
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float clipPlane[4];
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2016-12-15 23:35:45 +00:00
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TriBlendMode blendmode = TriBlendMode::Copy;
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2016-11-26 09:49:29 +00:00
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void SetClipPlane(float a, float b, float c, float d)
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{
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clipPlane[0] = a;
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clipPlane[1] = b;
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clipPlane[2] = c;
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clipPlane[3] = d;
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}
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2016-11-11 17:24:59 +00:00
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void SetTexture(FTexture *texture)
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{
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textureWidth = texture->GetWidth();
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textureHeight = texture->GetHeight();
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2016-12-01 01:38:32 +00:00
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if (swrenderer::r_swtruecolor)
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2016-11-11 17:24:59 +00:00
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texturePixels = (const uint8_t *)texture->GetPixelsBgra();
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else
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texturePixels = texture->GetPixels();
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2016-11-19 12:32:57 +00:00
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translation = nullptr;
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}
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2016-11-21 04:52:02 +00:00
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void SetTexture(FTexture *texture, uint32_t translationID, bool forcePal = false)
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2016-11-19 12:32:57 +00:00
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{
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2016-11-21 04:09:53 +00:00
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if (translationID != 0xffffffff && translationID != 0)
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2016-11-19 12:32:57 +00:00
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{
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FRemapTable *table = TranslationToTable(translationID);
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if (table != nullptr && !table->Inactive)
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{
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2016-12-01 01:38:32 +00:00
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if (swrenderer::r_swtruecolor)
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2016-11-19 12:32:57 +00:00
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translation = (uint8_t*)table->Palette;
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else
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translation = table->Remap;
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textureWidth = texture->GetWidth();
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textureHeight = texture->GetHeight();
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texturePixels = texture->GetPixels();
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return;
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}
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}
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2016-11-21 04:52:02 +00:00
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if (forcePal)
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{
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textureWidth = texture->GetWidth();
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textureHeight = texture->GetHeight();
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texturePixels = texture->GetPixels();
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}
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else
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{
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SetTexture(texture);
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}
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2016-11-11 17:24:59 +00:00
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}
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2016-11-20 03:06:21 +00:00
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void SetColormap(FSWColormap *base_colormap)
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{
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uniforms.light_red = base_colormap->Color.r * 256 / 255;
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uniforms.light_green = base_colormap->Color.g * 256 / 255;
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uniforms.light_blue = base_colormap->Color.b * 256 / 255;
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uniforms.light_alpha = base_colormap->Color.a * 256 / 255;
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uniforms.fade_red = base_colormap->Fade.r;
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uniforms.fade_green = base_colormap->Fade.g;
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uniforms.fade_blue = base_colormap->Fade.b;
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uniforms.fade_alpha = base_colormap->Fade.a;
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uniforms.desaturate = MIN(abs(base_colormap->Desaturate), 255) * 255 / 256;
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bool simple_shade = (base_colormap->Color.d == 0x00ffffff && base_colormap->Fade.d == 0x00000000 && base_colormap->Desaturate == 0);
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if (simple_shade)
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uniforms.flags |= TriUniforms::simple_shade;
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else
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uniforms.flags &= ~TriUniforms::simple_shade;
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colormaps = base_colormap->Maps;
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}
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2016-11-11 17:24:59 +00:00
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};
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2016-11-26 09:49:29 +00:00
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struct ShadedTriVertex : public TriVertex
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{
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float clipDistance0;
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};
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struct TriMatrix
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{
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static TriMatrix null();
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static TriMatrix identity();
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static TriMatrix translate(float x, float y, float z);
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static TriMatrix scale(float x, float y, float z);
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static TriMatrix rotate(float angle, float x, float y, float z);
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static TriMatrix swapYZ();
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static TriMatrix perspective(float fovy, float aspect, float near, float far);
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static TriMatrix frustum(float left, float right, float bottom, float top, float near, float far);
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static TriMatrix worldToView(); // Software renderer world to view space transform
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static TriMatrix viewToClip(); // Software renderer shearing projection
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ShadedTriVertex operator*(TriVertex v) const;
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TriMatrix operator*(const TriMatrix &m) const;
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float matrix[16];
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};
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2016-12-15 00:33:26 +00:00
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typedef void(*PolyDrawFuncPtr)(const TriDrawTriangleArgs *, WorkerThreadData *);
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2016-11-08 13:28:58 +00:00
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class PolyTriangleDrawer
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{
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public:
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2016-11-18 00:58:39 +00:00
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static void set_viewport(int x, int y, int width, int height, DCanvas *canvas);
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2016-12-15 23:35:45 +00:00
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static void draw(const PolyDrawArgs &args);
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2016-12-07 21:26:18 +00:00
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static void toggle_mirror();
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2016-11-08 13:28:58 +00:00
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private:
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2016-11-26 09:49:29 +00:00
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static ShadedTriVertex shade_vertex(const TriMatrix &objectToClip, const float *clipPlane, const TriVertex &v);
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2016-12-15 23:35:45 +00:00
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static void draw_arrays(const PolyDrawArgs &args, WorkerThreadData *thread);
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2016-12-15 22:29:31 +00:00
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static void draw_shaded_triangle(const ShadedTriVertex *vertices, bool ccw, TriDrawTriangleArgs *args, WorkerThreadData *thread, PolyDrawFuncPtr *drawfuncs, int num_drawfuncs);
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2016-11-08 13:28:58 +00:00
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static bool cullhalfspace(float clipdistance1, float clipdistance2, float &t1, float &t2);
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2016-11-26 09:49:29 +00:00
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static void clipedge(const ShadedTriVertex *verts, TriVertex *clippedvert, int &numclipvert);
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2016-11-08 13:28:58 +00:00
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2016-11-18 00:58:39 +00:00
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static int viewport_x, viewport_y, viewport_width, viewport_height, dest_pitch, dest_width, dest_height;
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static bool dest_bgra;
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static uint8_t *dest;
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2016-12-07 21:26:18 +00:00
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static bool mirror;
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2016-11-18 00:58:39 +00:00
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2016-11-10 04:30:33 +00:00
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enum { max_additional_vertices = 16 };
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2016-11-08 13:28:58 +00:00
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friend class DrawPolyTrianglesCommand;
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};
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2016-11-10 12:58:03 +00:00
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class PolySubsectorGBuffer
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{
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public:
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static PolySubsectorGBuffer *Instance()
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{
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static PolySubsectorGBuffer buffer;
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return &buffer;
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}
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void Resize(int newwidth, int newheight)
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{
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width = newwidth;
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height = newheight;
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values.resize(width * height);
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}
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int Width() const { return width; }
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int Height() const { return height; }
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uint32_t *Values() { return values.data(); }
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private:
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int width;
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int height;
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std::vector<uint32_t> values;
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};
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2016-11-10 07:08:37 +00:00
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class PolyStencilBuffer
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{
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public:
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static PolyStencilBuffer *Instance()
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{
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static PolyStencilBuffer buffer;
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return &buffer;
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}
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void Clear(int newwidth, int newheight, uint8_t stencil_value = 0)
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{
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width = newwidth;
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height = newheight;
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int count = BlockWidth() * BlockHeight();
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values.resize(count * 64);
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masks.resize(count);
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uint8_t *v = Values();
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uint32_t *m = Masks();
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for (int i = 0; i < count; i++)
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{
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2016-11-20 00:51:08 +00:00
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m[i] = 0xffffff00 | stencil_value;
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2016-11-10 07:08:37 +00:00
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}
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}
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int Width() const { return width; }
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int Height() const { return height; }
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int BlockWidth() const { return (width + 7) / 8; }
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int BlockHeight() const { return (height + 7) / 8; }
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uint8_t *Values() { return values.data(); }
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uint32_t *Masks() { return masks.data(); }
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private:
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int width;
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int height;
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2016-11-20 00:51:08 +00:00
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// 8x8 blocks of stencil values, plus a mask for each block indicating if values are the same for early out stencil testing
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2016-11-10 07:08:37 +00:00
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std::vector<uint8_t> values;
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std::vector<uint32_t> masks;
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};
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2016-11-08 13:28:58 +00:00
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class DrawPolyTrianglesCommand : public DrawerCommand
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{
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public:
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2016-12-15 23:35:45 +00:00
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DrawPolyTrianglesCommand(const PolyDrawArgs &args, bool mirror);
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2016-11-08 13:28:58 +00:00
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void Execute(DrawerThread *thread) override;
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FString DebugInfo() override;
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private:
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2016-11-11 17:24:59 +00:00
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PolyDrawArgs args;
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2016-11-08 13:28:58 +00:00
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};
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2016-11-24 04:51:37 +00:00
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class PolyVertexBuffer
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{
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public:
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static TriVertex *GetVertices(int count);
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static void Clear();
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};
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2016-12-11 16:39:44 +00:00
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2016-12-12 20:34:22 +00:00
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struct ScreenTriangleStepVariables
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2016-12-11 16:39:44 +00:00
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{
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float W;
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float Varying[TriVertex::NumVarying];
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};
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class ScreenTriangle
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{
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public:
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2016-12-13 18:26:13 +00:00
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static void SetupNormal(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
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static void SetupSubsector(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
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static void StencilWrite(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
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static void SubsectorWrite(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
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2016-12-11 16:39:44 +00:00
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};
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