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324 lines
8.7 KiB
C
324 lines
8.7 KiB
C
// SONIC ROBO BLAST 2
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//-----------------------------------------------------------------------------
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// Copyright (C) 1998-2000 by DooM Legacy Team.
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// Copyright (C) 1999-2023 by Sonic Team Junior.
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//
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// This program is free software distributed under the
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// terms of the GNU General Public License, version 2.
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// See the 'LICENSE' file for more details.
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//-----------------------------------------------------------------------------
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/// \file hw_defs.h
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/// \brief 3D hardware renderer definitions
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#ifndef _HWR_DEFS_
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#define _HWR_DEFS_
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#include "../doomtype.h"
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#include "../r_defs.h"
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#define ZCLIP_PLANE 4.0f // Used for the actual game drawing
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#define NZCLIP_PLANE 0.9f // Seems to be only used for the HUD and screen textures
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// ==========================================================================
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// SIMPLE TYPES
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// ==========================================================================
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typedef long FINT;
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typedef unsigned long FUINT;
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typedef unsigned char FUBYTE;
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typedef unsigned long FBITFIELD;
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#ifndef __MINGW32__
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typedef float FLOAT;
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#endif
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typedef unsigned char FBOOLEAN;
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// ==========================================================================
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// COLORS
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// ==========================================================================
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// byte value for paletted graphics, which represent the transparent color
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#define HWR_PATCHES_CHROMAKEY_COLORINDEX 255
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//#define HWR_CHROMAKEY_EQUIVALENTCOLORINDEX 130
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// the chroma key color shows on border sprites, set it to black
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#define HWR_PATCHES_CHROMAKEY_COLORVALUE (0x00000000) //RGBA format as in grSstWinOpen()
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// RGBA Color components with float type ranging [ 0 ... 1 ]
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struct FRGBAFloat
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{
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FLOAT red;
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FLOAT green;
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FLOAT blue;
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FLOAT alpha;
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};
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typedef struct FRGBAFloat FRGBAFloat;
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struct FColorARGB
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{
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FUBYTE alpha;
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FUBYTE red;
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FUBYTE green;
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FUBYTE blue;
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};
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typedef struct FColorARGB ARGB_t;
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typedef struct FColorARGB FColorARGB;
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// ==========================================================================
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// VECTORS
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// ==========================================================================
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// Simple 2D coordinate
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typedef struct
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{
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FLOAT x,y;
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} F2DCoord, v2d_t;
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// Simple 3D vector
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typedef struct FVector
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{
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FLOAT x,y,z;
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} FVector;
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// ======================
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// wallVert3D
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// ----------------------
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// :crab: IS GONE! :crab:
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// ======================
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// -----------
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// structures
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// -----------
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//Hurdler: Transform (coords + angles)
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//BP: transform order : scale(rotation_x(rotation_y(translation(v))))
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// Vanilla features
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#define USE_MODEL_NEXTFRAME
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typedef struct
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{
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FLOAT x,y,z; // position
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FLOAT anglex,angley,anglez; // aimingangle / viewangle
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FLOAT scalex,scaley,scalez;
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FLOAT fovxangle, fovyangle;
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UINT8 splitscreen;
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boolean flip; // screenflip
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boolean roll;
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FLOAT rollangle; // done to not override USE_FTRANSFORM_ANGLEZ
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FLOAT centerx, centery;
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FLOAT rollx, rollz;
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boolean mirror; // SRB2Kart: Encore Mode
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boolean shearing; // 14042019
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float viewaiming; // 17052019
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} FTransform;
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// Transformed vector, as passed to HWR API
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typedef struct
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{
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FLOAT x,y,z;
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FLOAT s; // s texture ordinate (s over w)
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FLOAT t; // t texture ordinate (t over w)
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} FOutVector;
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#ifdef GL_SHADERS
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// Predefined shader types
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enum
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{
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SHADER_NONE = -1,
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SHADER_DEFAULT = 0,
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SHADER_FLOOR,
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SHADER_WALL,
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SHADER_SPRITE,
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SHADER_MODEL, SHADER_MODEL_LIGHTING,
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SHADER_WATER,
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SHADER_FOG,
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SHADER_SKY,
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NUMBASESHADERS,
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};
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// Maximum amount of shader programs
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// Must be higher than NUMBASESHADERS
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#define HWR_MAXSHADERS 16
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// Shader sources (vertex and fragment)
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typedef struct
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{
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char *vertex;
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char *fragment;
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} shadersource_t;
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// Custom shader reference table
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typedef struct
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{
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const char *type;
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INT32 id;
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} customshaderxlat_t;
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#endif
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typedef struct vbo_vertex_s
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{
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float x, y, z;
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float u, v;
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unsigned char r, g, b, a;
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} gl_skyvertex_t;
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typedef enum gl_skyloopmode_e
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{
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HWD_SKYLOOP_FAN,
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HWD_SKYLOOP_STRIP
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} gl_skyloopmode_t;
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typedef struct
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{
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gl_skyloopmode_t mode;
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int vertexcount;
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int vertexindex;
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boolean use_texture;
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} gl_skyloopdef_t;
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typedef struct
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{
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unsigned int vbo;
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int rows, columns;
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int loopcount;
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int detail, vertex_count;
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int texture, width, height;
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boolean rebuild; // VBO needs to be rebuilt
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gl_skyloopdef_t *loops;
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gl_skyvertex_t *data;
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} gl_sky_t;
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// ==========================================================================
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// RENDER MODES
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// ==========================================================================
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// Flags describing how to render a polygon
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// You pass a combination of these flags to DrawPolygon()
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enum EPolyFlags
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{
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// Mutually exclusive blend flags
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PF_Masked = 0x00000001, // Poly is alpha scaled and 0 alpha pixels are discarded (holes in texture)
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PF_Translucent = 0x00000002, // Poly is transparent, alpha = level of transparency
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PF_Environment = 0x00000004, // Poly should be drawn environment mapped. (Hurdler: used for text drawing)
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PF_Additive = 0x00000008, // Source blending factor is additive.
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PF_Subtractive = 0x00000010, // Subtractive color blending
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PF_ReverseSubtract = 0x00000020, // Reverse subtract, used in wall splats (decals)
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PF_Multiplicative = 0x00000040, // Multiplicative color blending
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PF_Fog = 0x20000000, // Fog blocks
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PF_NoAlphaTest = 0x40000000, // Disables alpha testing
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PF_Blending = (PF_Masked|PF_Translucent|PF_Environment|PF_Additive|PF_Subtractive|PF_ReverseSubtract|PF_Multiplicative|PF_Fog) & ~PF_NoAlphaTest,
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// other flag bits
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PF_Occlude = 0x00000100, // Updates the depth buffer
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PF_NoDepthTest = 0x00000200, // Disables the depth test mode
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PF_Invisible = 0x00000400, // Disables write to color buffer
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PF_Decal = 0x00000800, // Enables polygon offset
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PF_Modulated = 0x00001000, // Modulation (multiply output with constant RGBA)
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// When set, pass the color constant into the FSurfaceInfo -> PolyColor
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PF_NoTexture = 0x00002000, // Disables texturing
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PF_Corona = 0x00004000, // Tells the renderer we are drawing a corona
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PF_ColorMapped = 0x00008000, // Surface has "tint" and "fade" colors, which are sent as uniforms to a shader.
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PF_RemoveYWrap = 0x00010000, // Forces clamp texture on Y
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PF_ForceWrapX = 0x00020000, // Forces repeat texture on X
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PF_ForceWrapY = 0x00040000, // Forces repeat texture on Y
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PF_Ripple = 0x00100000, // Water ripple effect. The current backend doesn't use it for anything.
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PF_WireFrame = 0x00200000, // Draws vertices as lines instead of triangles
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};
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enum ESurfFlags
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{
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SF_DYNLIGHT = 0x00000001,
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};
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enum ETextureFlags
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{
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TF_WRAPX = 0x00000001, // wrap around X
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TF_WRAPY = 0x00000002, // wrap around Y
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TF_WRAPXY = TF_WRAPY|TF_WRAPX, // very common so use alias is more easy
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TF_CHROMAKEYED = 0x00000010,
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TF_TRANSPARENT = 0x00000040, // texture with some alpha == 0
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};
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struct FTextureInfo
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{
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UINT32 width, height;
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UINT32 downloaded;
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UINT32 format;
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struct GLMipmap_s *texture;
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struct FTextureInfo *prev, *next;
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};
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typedef struct FTextureInfo FTextureInfo;
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struct FLightInfo
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{
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FUINT light_level;
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FUINT fade_start;
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FUINT fade_end;
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};
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typedef struct FLightInfo FLightInfo;
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// Description of a renderable surface
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struct FSurfaceInfo
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{
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FUINT PolyFlags;
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RGBA_t PolyColor;
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RGBA_t TintColor;
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RGBA_t FadeColor;
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FLightInfo LightInfo;
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};
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typedef struct FSurfaceInfo FSurfaceInfo;
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#define GL_DEFAULTMIX 0x00000000
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#define GL_DEFAULTFOG 0xFF000000
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//Hurdler: added for backward compatibility
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enum hwdsetspecialstate
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{
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HWD_SET_MODEL_LIGHTING = 1,
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HWD_SET_SHADERS,
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HWD_SET_TEXTUREFILTERMODE,
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HWD_SET_TEXTUREANISOTROPICMODE,
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HWD_NUMSTATE
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};
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typedef enum hwdsetspecialstate hwdspecialstate_t;
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// Lactozilla: Shader options
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enum hwdshaderoption
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{
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HWD_SHADEROPTION_OFF,
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HWD_SHADEROPTION_ON,
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HWD_SHADEROPTION_NOCUSTOM,
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};
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typedef enum hwdshaderoption hwdshaderoption_t;
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// Lactozilla: Shader info
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// Generally set at the start of the frame.
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enum hwdshaderinfo
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{
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HWD_SHADERINFO_LEVELTIME = 1,
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};
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typedef enum hwdshaderinfo hwdshaderinfo_t;
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enum hwdfiltermode
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{
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HWD_SET_TEXTUREFILTER_POINTSAMPLED,
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HWD_SET_TEXTUREFILTER_BILINEAR,
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HWD_SET_TEXTUREFILTER_TRILINEAR,
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HWD_SET_TEXTUREFILTER_MIXED1,
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HWD_SET_TEXTUREFILTER_MIXED2,
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HWD_SET_TEXTUREFILTER_MIXED3,
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};
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#endif //_HWR_DEFS_
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