mirror of
https://github.com/godotengine/godot.git
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465 lines
8.8 KiB
GLSL
465 lines
8.8 KiB
GLSL
[vertex]
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layout(location=0) in highp vec2 vertex;
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layout(location=3) in vec4 color_attrib;
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#ifdef USE_TEXTURE_RECT
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layout(location=1) in highp vec4 dst_rect;
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layout(location=2) in highp vec4 src_rect;
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#else
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layout(location=4) in highp vec2 uv_attrib;
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//skeletn
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#endif
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layout(std140) uniform CanvasItemData { //ubo:0
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highp mat4 projection_matrix;
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highp vec4 time;
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};
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uniform highp mat4 modelview_matrix;
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uniform highp mat4 extra_matrix;
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out mediump vec2 uv_interp;
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out mediump vec4 color_interp;
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#ifdef USE_LIGHTING
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layout(std140) uniform LightData { //ubo:1
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//light matrices
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highp mat4 light_matrix;
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highp mat4 light_local_matrix;
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highp mat4 shadow_matrix;
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highp vec4 light_color;
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highp vec4 light_shadow_color;
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highp vec2 light_pos;
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highp float shadowpixel_size;
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highp float shadow_gradient;
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highp float light_height;
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highp float light_outside_alpha;
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highp float shadow_distance_mult;
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};
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out vec4 light_uv_interp;
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#if defined(NORMAL_USED)
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out vec4 local_rot;
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#endif
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#ifdef USE_SHADOWS
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out highp vec2 pos;
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#endif
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#endif
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VERTEX_SHADER_GLOBALS
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#if defined(USE_MATERIAL)
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layout(std140) uniform UniformData { //ubo:2
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MATERIAL_UNIFORMS
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};
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#endif
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void main() {
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vec4 vertex_color = color_attrib;
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#ifdef USE_TEXTURE_RECT
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uv_interp = src_rect.xy + abs(src_rect.zw) * vertex;
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highp vec4 outvec = vec4(dst_rect.xy + dst_rect.zw * mix(vertex,vec2(1.0,1.0)-vertex,lessThan(src_rect.zw,vec2(0.0,0.0))),0.0,1.0);
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#else
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uv_interp = uv_attrib;
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highp vec4 outvec = vec4(vertex,0.0,1.0);
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#endif
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{
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vec2 src_vtx=outvec.xy;
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VERTEX_SHADER_CODE
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}
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#if !defined(SKIP_TRANSFORM_USED)
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outvec = extra_matrix * outvec;
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outvec = modelview_matrix * outvec;
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#endif
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color_interp = vertex_color;
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#ifdef USE_PIXEL_SNAP
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outvec.xy=floor(outvec+0.5);
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#endif
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gl_Position = projection_matrix * outvec;
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#ifdef USE_LIGHTING
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light_uv_interp.xy = (light_matrix * outvec).xy;
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light_uv_interp.zw =(light_local_matrix * outvec).xy;
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#ifdef USE_SHADOWS
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pos=outvec.xy;
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#endif
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#if defined(NORMAL_USED)
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local_rot.xy=normalize( (modelview_matrix * ( extra_matrix * vec4(1.0,0.0,0.0,0.0) )).xy );
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local_rot.zw=normalize( (modelview_matrix * ( extra_matrix * vec4(0.0,1.0,0.0,0.0) )).xy );
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#ifdef USE_TEXTURE_RECT
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local_rot.xy*=sign(src_rect.z);
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local_rot.zw*=sign(src_rect.w);
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#endif
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#endif
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#endif
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}
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[fragment]
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uniform mediump sampler2D color_texture; // texunit:0
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uniform highp vec2 color_texpixel_size;
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in mediump vec2 uv_interp;
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in mediump vec4 color_interp;
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#if defined(SCREEN_TEXTURE_USED)
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uniform sampler2D screen_texture; // texunit:-3
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#endif
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layout(std140) uniform CanvasItemData {
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highp mat4 projection_matrix;
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highp vec4 time;
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};
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#ifdef USE_LIGHTING
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layout(std140) uniform LightData {
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highp mat4 light_matrix;
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highp mat4 light_local_matrix;
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highp mat4 shadow_matrix;
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highp vec4 light_color;
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highp vec4 light_shadow_color;
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highp vec2 light_pos;
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highp float shadowpixel_size;
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highp float shadow_gradient;
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highp float light_height;
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highp float light_outside_alpha;
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highp float shadow_distance_mult;
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};
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uniform lowp sampler2D light_texture; // texunit:-1
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in vec4 light_uv_interp;
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#if defined(NORMAL_USED)
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in vec4 local_rot;
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#endif
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#ifdef USE_SHADOWS
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uniform highp sampler2D shadow_texture; // texunit:-2
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in highp vec2 pos;
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#endif
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#endif
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uniform mediump vec4 final_modulate;
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FRAGMENT_SHADER_GLOBALS
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layout(location=0) out mediump vec4 frag_color;
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#if defined(USE_MATERIAL)
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layout(std140) uniform UniformData {
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MATERIAL_UNIFORMS
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};
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#endif
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void light_compute(inout vec3 light,vec3 light_vec,float light_height,vec4 light_color,vec2 light_uv,vec4 shadow,vec3 normal,vec2 uv,vec2 screen_uv,vec4 color) {
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#if defined(USE_LIGHT_SHADER_CODE)
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LIGHT_SHADER_CODE
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#endif
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}
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void main() {
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vec4 color = color_interp;
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#if defined(NORMAL_USED)
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vec3 normal = vec3(0.0,0.0,1.0);
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#endif
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#if !defined(COLOR_USED)
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//default behavior, texture by color
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#ifdef USE_DISTANCE_FIELD
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const float smoothing = 1.0/32.0;
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float distance = texture(color_texture, uv_interp).a;
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color.a = smoothstep(0.5 - smoothing, 0.5 + smoothing, distance) * color.a;
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#else
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color *= texture( color_texture, uv_interp );
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#endif
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#endif
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#if defined(ENABLE_SCREEN_UV)
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vec2 screen_uv = gl_FragCoord.xy*screen_uv_mult;
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#endif
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{
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float normal_depth=1.0;
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#if defined(NORMALMAP_USED)
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vec3 normal_map=vec3(0.0,0.0,1.0);
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#endif
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FRAGMENT_SHADER_CODE
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#if defined(NORMALMAP_USED)
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normal = mix(vec3(0.0,0.0,1.0), normal_map * vec3(2.0,-2.0,1.0) - vec3( 1.0, -1.0, 0.0 ), normal_depth );
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#endif
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}
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#ifdef DEBUG_ENCODED_32
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highp float enc32 = dot( color,highp vec4(1.0 / (256.0 * 256.0 * 256.0),1.0 / (256.0 * 256.0),1.0 / 256.0,1) );
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color = vec4(vec3(enc32),1.0);
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#endif
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color*=final_modulate;
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#ifdef USE_LIGHTING
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vec2 light_vec = light_uv_interp.zw;; //for shadow and normal mapping
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#if defined(NORMAL_USED)
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normal.xy = mat2(local_rot.xy,local_rot.zw) * normal.xy;
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#endif
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float att=1.0;
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vec2 light_uv = light_uv_interp.xy;
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vec4 light = texture(light_texture,light_uv) * light_color;
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#if defined(SHADOW_COLOR_USED)
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vec4 shadow_color=vec4(0.0,0.0,0.0,0.0);
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#endif
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if (any(lessThan(light_uv_interp.xy,vec2(0.0,0.0))) || any(greaterThanEqual(light_uv_interp.xy,vec2(1.0,1.0)))) {
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color.a*=light_outside_alpha; //invisible
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} else {
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#if defined(USE_LIGHT_SHADER_CODE)
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//light is written by the light shader
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light_compute(light,light_vec,light_height,light_color,light_uv,shadow,normal,uv,screen_uv,color);
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#else
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#if defined(NORMAL_USED)
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vec3 light_normal = normalize(vec3(light_vec,-light_height));
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light*=max(dot(-light_normal,normal),0.0);
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#endif
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color*=light;
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/*
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#ifdef USE_NORMAL
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color.xy=local_rot.xy;//normal.xy;
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color.zw=vec2(0.0,1.0);
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#endif
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*/
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//light shader code
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#endif
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#ifdef USE_SHADOWS
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float angle_to_light = -atan(light_vec.x,light_vec.y);
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float PI = 3.14159265358979323846264;
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/*int i = int(mod(floor((angle_to_light+7.0*PI/6.0)/(4.0*PI/6.0))+1.0, 3.0)); // +1 pq os indices estao em ordem 2,0,1 nos arrays
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float ang*/
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float su,sz;
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float abs_angle = abs(angle_to_light);
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vec2 point;
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float sh;
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if (abs_angle<45.0*PI/180.0) {
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point = light_vec;
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sh=0.0+(1.0/8.0);
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} else if (abs_angle>135.0*PI/180.0) {
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point = -light_vec;
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sh = 0.5+(1.0/8.0);
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} else if (angle_to_light>0.0) {
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point = vec2(light_vec.y,-light_vec.x);
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sh = 0.25+(1.0/8.0);
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} else {
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point = vec2(-light_vec.y,light_vec.x);
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sh = 0.75+(1.0/8.0);
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}
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highp vec4 s = shadow_matrix * vec4(point,0.0,1.0);
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s.xyz/=s.w;
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su=s.x*0.5+0.5;
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sz=s.z*0.5+0.5;
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//sz=lightlength(light_vec);
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highp float shadow_attenuation=0.0;
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#ifdef USE_RGBA_SHADOWS
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#define SHADOW_DEPTH(m_tex,m_uv) dot(texture2D((m_tex),(m_uv)),vec4(1.0 / (256.0 * 256.0 * 256.0),1.0 / (256.0 * 256.0),1.0 / 256.0,1) )
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#else
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#define SHADOW_DEPTH(m_tex,m_uv) (texture2D((m_tex),(m_uv)).r)
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#endif
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#ifdef SHADOW_USE_GRADIENT
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#define SHADOW_TEST(m_ofs) { highp float sd = SHADOW_DEPTH(shadow_texture,vec2(m_ofs,sh)); shadow_attenuation+=1.0-smoothstep(sd,sd+shadow_gradient,sz); }
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#else
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#define SHADOW_TEST(m_ofs) { highp float sd = SHADOW_DEPTH(shadow_texture,vec2(m_ofs,sh)); shadow_attenuation+=step(sz,sd); }
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#endif
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#ifdef SHADOW_FILTER_NEAREST
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SHADOW_TEST(su+shadowpixel_size);
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#endif
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#ifdef SHADOW_FILTER_PCF3
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SHADOW_TEST(su+shadowpixel_size);
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SHADOW_TEST(su);
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SHADOW_TEST(su-shadowpixel_size);
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shadow_attenuation/=3.0;
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#endif
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#ifdef SHADOW_FILTER_PCF5
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SHADOW_TEST(su+shadowpixel_size*3.0);
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SHADOW_TEST(su+shadowpixel_size*2.0);
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SHADOW_TEST(su+shadowpixel_size);
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SHADOW_TEST(su);
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SHADOW_TEST(su-shadowpixel_size);
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SHADOW_TEST(su-shadowpixel_size*2.0);
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SHADOW_TEST(su-shadowpixel_size*3.0);
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shadow_attenuation/=5.0;
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#endif
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#ifdef SHADOW_FILTER_PCF9
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SHADOW_TEST(su+shadowpixel_size*4.0);
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SHADOW_TEST(su+shadowpixel_size*3.0);
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SHADOW_TEST(su+shadowpixel_size*2.0);
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SHADOW_TEST(su+shadowpixel_size);
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SHADOW_TEST(su);
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SHADOW_TEST(su-shadowpixel_size);
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SHADOW_TEST(su-shadowpixel_size*2.0);
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SHADOW_TEST(su-shadowpixel_size*3.0);
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SHADOW_TEST(su-shadowpixel_size*4.0);
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shadow_attenuation/=9.0;
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#endif
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#ifdef SHADOW_FILTER_PCF13
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SHADOW_TEST(su+shadowpixel_size*6.0);
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SHADOW_TEST(su+shadowpixel_size*5.0);
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SHADOW_TEST(su+shadowpixel_size*4.0);
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SHADOW_TEST(su+shadowpixel_size*3.0);
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SHADOW_TEST(su+shadowpixel_size*2.0);
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SHADOW_TEST(su+shadowpixel_size);
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SHADOW_TEST(su);
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SHADOW_TEST(su-shadowpixel_size);
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SHADOW_TEST(su-shadowpixel_size*2.0);
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SHADOW_TEST(su-shadowpixel_size*3.0);
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SHADOW_TEST(su-shadowpixel_size*4.0);
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SHADOW_TEST(su-shadowpixel_size*5.0);
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SHADOW_TEST(su-shadowpixel_size*6.0);
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shadow_attenuation/=13.0;
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#endif
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#if defined(SHADOW_COLOR_USED)
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color=mix(shadow_color,color,shadow_attenuation);
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#else
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//color*=shadow_attenuation;
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color=mix(light_shadow_color,color,shadow_attenuation);
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#endif
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//use shadows
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#endif
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}
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//use lighting
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#endif
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//color.rgb*=color.a;
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frag_color = color;
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}
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