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asarium
b9b556c7a5
One of the main points of contention when adding the NanoVG based TrueType text rendering was that it required an external Opengl renderer which may interfere with our rendering engine by changing OpenGL state without telling the rest of the engine. Since the rendering interface for NanoVG is abstract and can be easily replaced, I did just that and replaced it with an implementation that uses only generic graphics functions without relying on the specific graphics API. This will improve the interoperability of NanoVG with our engine and should make later changes to the rendering engine easier since there is no external rendering code which may interfere with our own code.
73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/*
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* Copyright (C) Volition, Inc. 1999. All rights reserved.
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*
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* All source code herein is the property of Volition, Inc. You may not sell
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* or otherwise commercially exploit the source or things you created based on the
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* source.
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*
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*/
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#ifndef _GRINTERNAL_H
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#define _GRINTERNAL_H
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#include "globalincs/globals.h" // just in case pstypes.h messed up
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#include "globalincs/pstypes.h" // IAM_64BIT
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#include "graphics/font.h"
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extern ubyte Gr_original_palette[768]; // The palette
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extern ubyte Gr_current_palette[768];
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extern char Gr_current_palette_name[128];
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typedef struct color_gun {
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int bits;
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int shift;
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int scale;
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int mask;
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} color_gun;
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// screen format
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extern color_gun Gr_red, Gr_green, Gr_blue, Gr_alpha;
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// texture format
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extern color_gun Gr_t_red, Gr_t_green, Gr_t_blue, Gr_t_alpha;
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// alpha texture format
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extern color_gun Gr_ta_red, Gr_ta_green, Gr_ta_blue, Gr_ta_alpha;
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// CURRENT FORMAT - note - this is what bmpman uses when fiddling with pixels/colors. so be sure its properly set to one
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// of the above values
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extern color_gun *Gr_current_red, *Gr_current_green, *Gr_current_blue, *Gr_current_alpha;
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extern float Gr_gamma;
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extern int Gr_gamma_int;
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#define TCACHE_TYPE_AABITMAP 0 // HUD bitmap. All Alpha.
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#define TCACHE_TYPE_NORMAL 1 // Normal bitmap. Alpha = 0.
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#define TCACHE_TYPE_XPARENT 2 // Bitmap with 0,255,0 = transparent. Alpha=0 if transparent, 1 if not.
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#define TCACHE_TYPE_INTERFACE 3 // for graphics that are using in the interface (for special filtering or sizing)
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#define TCACHE_TYPE_COMPRESSED 4 // Compressed bitmap type (DXT1, DXT3, DXT5)
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#define TCACHE_TYPE_CUBEMAP 5
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#define NEBULA_COLORS 20
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typedef enum gr_alpha_blend {
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ALPHA_BLEND_NONE, // 1*SrcPixel + 0*DestPixel
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ALPHA_BLEND_ADDITIVE, // 1*SrcPixel + 1*DestPixel
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ALPHA_BLEND_ALPHA_ADDITIVE, // Alpha*SrcPixel + 1*DestPixel
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ALPHA_BLEND_ALPHA_BLEND_ALPHA, // Alpha*SrcPixel + (1-Alpha)*DestPixel
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ALPHA_BLEND_ALPHA_BLEND_SRC_COLOR, // Alpha*SrcPixel + (1-SrcPixel)*DestPixel
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ALPHA_BLEND_PREMULTIPLIED // 1*SrcPixel + (1-Alpha)*DestPixel
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} gr_alpha_blend;
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typedef enum gr_zbuffer_type {
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ZBUFFER_TYPE_NONE,
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ZBUFFER_TYPE_READ,
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ZBUFFER_TYPE_WRITE,
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ZBUFFER_TYPE_FULL,
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ZBUFFER_TYPE_DEFAULT
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} gr_zbuffer_type;
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#endif
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