ddnet/shader/bordertilelinetex.vert
2017-10-09 19:44:22 +02:00

26 lines
742 B
GLSL

#version 330
layout (location = 0) in vec2 inVertex;
layout (location = 1) in vec2 inVertexTexCoord;
layout (location = 2) in ivec2 inVertexTexRightOrBottom;
uniform mat4x2 Pos;
uniform float LOD;
uniform vec2 Dir;
noperspective out vec2 texCoord;
void main()
{
vec4 VertPos = vec4(inVertex, 0.0, 1.0);
VertPos.x += Dir.x * (gl_InstanceID+1);
VertPos.y += Dir.y * (gl_InstanceID+1);
gl_Position = vec4(Pos * VertPos, 0.0, 1.0);
float F1 = -(0.5/(1024.0 * pow(0.5, (LOD+1.0))));
float F2 = (0.5/(1024.0 * pow(0.5, (LOD+1.0))));
float tx = (inVertexTexCoord.x/(16.0));
float ty = (inVertexTexCoord.y/(16.0));
texCoord = vec2(tx + (inVertexTexRightOrBottom.x == 0 ? F2 : F1), ty + (inVertexTexRightOrBottom.y == 0 ? F2 : F1));
}