awtk/3rd/nanovg/bgfx/vs_nanovg_fill.sc
2018-11-09 18:46:34 +08:00

24 lines
528 B
Python

$input a_position, a_texcoord0
$output v_position, v_texcoord0
#include "../common.sh"
#define NEED_HALF_TEXEL (BGFX_SHADER_LANGUAGE_HLSL < 4)
uniform vec4 u_viewSize;
#if NEED_HALF_TEXEL
uniform vec4 u_halfTexel;
#endif // NEED_HALF_TEXEL
void main()
{
#if !NEED_HALF_TEXEL
const vec4 u_halfTexel = vec4_splat(0.0);
#endif // !NEED_HALF_TEXEL
v_position = a_position;
v_texcoord0 = a_texcoord0+u_halfTexel.xy;
gl_Position = vec4(2.0*v_position.x/u_viewSize.x - 1.0, 1.0 - 2.0*v_position.y/u_viewSize.y, 0.0, 1.0);
}