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Generate fire/plasma gradients at runtime, makes editing easier

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This commit is contained in:
Simon Robertshaw
2011-10-24 17:20:18 +01:00
parent 66fd41673b
commit 8f91f948c1
7 changed files with 85 additions and 17 deletions
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17
includes/graphics.h
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@@ -2,7 +2,6 @@
#define GRAPHICS_H
#include <SDL/SDL.h>
#include "defines.h"
#include "hmap.h"
#ifdef PIX16
#define PIXELSIZE 2
@@ -61,6 +60,16 @@ extern unsigned int fire_alpha[CELL*3][CELL*3];
extern pixel *fire_bg;
extern pixel *pers_bg;
extern char * flm_data;
extern int flm_data_points;;
extern pixel flm_data_colours[];
extern float flm_data_pos[];
extern char * plasma_data;
extern int plasma_data_points;;
extern pixel plasma_data_colours[];
extern float plasma_data_pos[];
struct gcache_item
{
int isready;
@@ -76,6 +85,8 @@ int graphics_DEFAULT(GRAPHICS_FUNC_ARGS);
void prepare_graphicscache();
char * generate_gradient(pixel * colours, float * points, int pointcount, int size);
void draw_rgba_image(pixel *vid, unsigned char *data, int x, int y, float a);
void *ptif_pack(pixel *src, int w, int h, int *result_size);
@@ -208,6 +219,8 @@ void ogl_blit(int x, int y, int w, int h, pixel *src, int pitch, int scale);
#endif
#ifdef INCLUDE_SHADERS
#ifndef SHADERS_H
#define SHADERS_H
const char * fireFragment = "uniform sampler2D fireAlpha;\
void main () {\
vec4 texColor = texture2D(fireAlpha, gl_PointCoord);\
@@ -257,5 +270,5 @@ const char * airVertex = "void main(void)\
gl_Position = ftransform();;\
gl_FrontColor = gl_Color;\
}";
#endif
#endif