sum_forces.cg

来自「游戏编程精粹６第中关于粒子的实时流体仿真系统,对入门的游戏开发者很有帮助．」· CG 代码 · 共 14 行

#include "sph.cg"
void main(float2 coord : TEXCOORD0,
		  uniform samplerRECT rect : TEXUNIT0,
		  uniform samplerRECT attr_rect : TEXUNIT1,
		  uniform int len,
		  out float3 result : COLOR)
{
	result = float3(0, 0, 0);
	float2 dp = f2texRECT(attr_rect, float2(coord.y, GPU_ATTR_DP));
	for (int i = 1; i < len; i++)
		result += f3texRECT(rect, coord + float2(i, 0));
	result *= dp.x;///= dp.x;
	result += f3texRECT(rect, coord);
}