isometric.gdshader.bkp

shader_type spatial;
render_mode world_vertex_coords, depth_prepass_alpha;

global uniform vec2 screen_size;

uniform sampler2D tex: filter_nearest;
uniform vec2 texture_size = vec2(128.0, 128.0);

varying vec2 pixel;

void vertex() {
	// Called for every vertex the material is visible on.
	/*
	vec4 vert = vec4(VERTEX, 1.0);
	vert = MODELVIEW_MATRIX * vert;
	vert = PROJECTION_MATRIX * vert;
	
	vec4 world_pos = MODELVIEW_MATRIX * vec4(0.0, 0.0, 0.0, 1.0);
	world_pos = PROJECTION_MATRIX * world_pos;
	pixel = vert.xy;
	pixel = (pixel + 1.0 - world_pos.xy) * 0.125;
	*/
	vec4 vert = vec4(VERTEX, 1.0);
	vert = MODELVIEW_MATRIX * vert;
	vert = PROJECTION_MATRIX * vert;
	
	vec4 world_pos = MODELVIEW_MATRIX * vec4(0.0, 0.0, 0.0, 1.0);
	world_pos = PROJECTION_MATRIX * world_pos;
	pixel = vert.xy;
	pixel = (pixel + 1.0) * 0.125;
	
	/* Working
	vec4 vert = vec4(VERTEX, 1.0);
	vert = MODELVIEW_MATRIX * vert;
	vert = PROJECTION_MATRIX * vert;
	pixel = vert.xy;
	pixel = (pixel + 1.0) * 0.125;
	*/
}

void fragment() {
	// Called for every pixel the material is visible on.
	//vec4 col = texture(tex, pixel * vec2(1280.0 / 64.0, 720.0 / 64.0));
	//vec4 col = texture(tex, pixel * screen_size / texture_size * 2.0);

	vec4 col = texture(tex, SCREEN_UV * screen_size / texture_size * 0.5);
	ALBEDO = col.rgb;
	ALPHA = col.a;
}