diff options
Diffstat (limited to 'src/mbgl/shaders')
-rw-r--r-- | src/mbgl/shaders/circle.cpp | 60 | ||||
-rw-r--r-- | src/mbgl/shaders/collision_box.cpp | 45 | ||||
-rw-r--r-- | src/mbgl/shaders/collision_circle.cpp | 83 | ||||
-rw-r--r-- | src/mbgl/shaders/collision_circle.hpp | 16 | ||||
-rw-r--r-- | src/mbgl/shaders/debug.cpp | 2 | ||||
-rw-r--r-- | src/mbgl/shaders/fill.cpp | 12 | ||||
-rw-r--r-- | src/mbgl/shaders/fill_extrusion.cpp | 28 | ||||
-rw-r--r-- | src/mbgl/shaders/fill_extrusion_pattern.cpp | 28 | ||||
-rw-r--r-- | src/mbgl/shaders/fill_outline.cpp | 12 | ||||
-rw-r--r-- | src/mbgl/shaders/fill_outline_pattern.cpp | 8 | ||||
-rw-r--r-- | src/mbgl/shaders/fill_pattern.cpp | 8 | ||||
-rw-r--r-- | src/mbgl/shaders/line.cpp | 43 | ||||
-rw-r--r-- | src/mbgl/shaders/line_pattern.cpp | 38 | ||||
-rw-r--r-- | src/mbgl/shaders/line_sdf.cpp | 48 | ||||
-rw-r--r-- | src/mbgl/shaders/preludes.cpp | 27 | ||||
-rw-r--r-- | src/mbgl/shaders/raster.cpp | 13 | ||||
-rw-r--r-- | src/mbgl/shaders/shaders.cpp | 1 | ||||
-rw-r--r-- | src/mbgl/shaders/symbol_icon.cpp | 97 | ||||
-rw-r--r-- | src/mbgl/shaders/symbol_sdf.cpp | 174 |
19 files changed, 486 insertions, 257 deletions
diff --git a/src/mbgl/shaders/circle.cpp b/src/mbgl/shaders/circle.cpp index 2e0c76122c..c14335914b 100644 --- a/src/mbgl/shaders/circle.cpp +++ b/src/mbgl/shaders/circle.cpp @@ -9,7 +9,9 @@ const char* circle::name = "circle"; const char* circle::vertexSource = R"MBGL_SHADER( uniform mat4 u_matrix; uniform bool u_scale_with_map; +uniform bool u_pitch_with_map; uniform vec2 u_extrude_scale; +uniform highp float u_camera_to_center_distance; attribute vec2 a_pos; @@ -22,6 +24,7 @@ varying highp vec4 color; uniform highp vec4 u_color; #endif + #ifndef HAS_UNIFORM_u_radius uniform lowp float a_radius_t; attribute mediump vec2 a_radius; @@ -30,6 +33,7 @@ varying mediump float radius; uniform mediump float u_radius; #endif + #ifndef HAS_UNIFORM_u_blur uniform lowp float a_blur_t; attribute lowp vec2 a_blur; @@ -38,6 +42,7 @@ varying lowp float blur; uniform lowp float u_blur; #endif + #ifndef HAS_UNIFORM_u_opacity uniform lowp float a_opacity_t; attribute lowp vec2 a_opacity; @@ -46,6 +51,7 @@ varying lowp float opacity; uniform lowp float u_opacity; #endif + #ifndef HAS_UNIFORM_u_stroke_color uniform lowp float a_stroke_color_t; attribute highp vec4 a_stroke_color; @@ -54,6 +60,7 @@ varying highp vec4 stroke_color; uniform highp vec4 u_stroke_color; #endif + #ifndef HAS_UNIFORM_u_stroke_width uniform lowp float a_stroke_width_t; attribute mediump vec2 a_stroke_width; @@ -62,6 +69,7 @@ varying mediump float stroke_width; uniform mediump float u_stroke_width; #endif + #ifndef HAS_UNIFORM_u_stroke_opacity uniform lowp float a_stroke_opacity_t; attribute lowp vec2 a_stroke_opacity; @@ -70,63 +78,87 @@ varying lowp float stroke_opacity; uniform lowp float u_stroke_opacity; #endif + varying vec3 v_data; void main(void) { - + #ifndef HAS_UNIFORM_u_color color = unpack_mix_vec4(a_color, a_color_t); #else highp vec4 color = u_color; #endif + #ifndef HAS_UNIFORM_u_radius radius = unpack_mix_vec2(a_radius, a_radius_t); #else mediump float radius = u_radius; #endif + #ifndef HAS_UNIFORM_u_blur blur = unpack_mix_vec2(a_blur, a_blur_t); #else lowp float blur = u_blur; #endif + #ifndef HAS_UNIFORM_u_opacity opacity = unpack_mix_vec2(a_opacity, a_opacity_t); #else lowp float opacity = u_opacity; #endif + #ifndef HAS_UNIFORM_u_stroke_color stroke_color = unpack_mix_vec4(a_stroke_color, a_stroke_color_t); #else highp vec4 stroke_color = u_stroke_color; #endif + #ifndef HAS_UNIFORM_u_stroke_width stroke_width = unpack_mix_vec2(a_stroke_width, a_stroke_width_t); #else mediump float stroke_width = u_stroke_width; #endif + #ifndef HAS_UNIFORM_u_stroke_opacity stroke_opacity = unpack_mix_vec2(a_stroke_opacity, a_stroke_opacity_t); #else lowp float stroke_opacity = u_stroke_opacity; #endif + // unencode the extrusion vector that we snuck into the a_pos vector vec2 extrude = vec2(mod(a_pos, 2.0) * 2.0 - 1.0); // multiply a_pos by 0.5, since we had it * 2 in order to sneak // in extrusion data - gl_Position = u_matrix * vec4(floor(a_pos * 0.5), 0, 1); - - if (u_scale_with_map) { - gl_Position.xy += extrude * (radius + stroke_width) * u_extrude_scale; + vec2 circle_center = floor(a_pos * 0.5); + if (u_pitch_with_map) { + vec2 corner_position = circle_center; + if (u_scale_with_map) { + corner_position += extrude * (radius + stroke_width) * u_extrude_scale; + } else { + // Pitching the circle with the map effectively scales it with the map + // To counteract the effect for pitch-scale: viewport, we rescale the + // whole circle based on the pitch scaling effect at its central point + vec4 projected_center = u_matrix * vec4(circle_center, 0, 1); + corner_position += extrude * (radius + stroke_width) * u_extrude_scale * (projected_center.w / u_camera_to_center_distance); + } + + gl_Position = u_matrix * vec4(corner_position, 0, 1); } else { - gl_Position.xy += extrude * (radius + stroke_width) * u_extrude_scale * gl_Position.w; + gl_Position = u_matrix * vec4(circle_center, 0, 1); + + if (u_scale_with_map) { + gl_Position.xy += extrude * (radius + stroke_width) * u_extrude_scale * u_camera_to_center_distance; + } else { + gl_Position.xy += extrude * (radius + stroke_width) * u_extrude_scale * gl_Position.w; + } } // This is a minimum blur distance that serves as a faux-antialiasing for @@ -146,74 +178,88 @@ varying highp vec4 color; uniform highp vec4 u_color; #endif + #ifndef HAS_UNIFORM_u_radius varying mediump float radius; #else uniform mediump float u_radius; #endif + #ifndef HAS_UNIFORM_u_blur varying lowp float blur; #else uniform lowp float u_blur; #endif + #ifndef HAS_UNIFORM_u_opacity varying lowp float opacity; #else uniform lowp float u_opacity; #endif + #ifndef HAS_UNIFORM_u_stroke_color varying highp vec4 stroke_color; #else uniform highp vec4 u_stroke_color; #endif + #ifndef HAS_UNIFORM_u_stroke_width varying mediump float stroke_width; #else uniform mediump float u_stroke_width; #endif + #ifndef HAS_UNIFORM_u_stroke_opacity varying lowp float stroke_opacity; #else uniform lowp float u_stroke_opacity; #endif + varying vec3 v_data; void main() { - + #ifdef HAS_UNIFORM_u_color highp vec4 color = u_color; #endif + #ifdef HAS_UNIFORM_u_radius mediump float radius = u_radius; #endif + #ifdef HAS_UNIFORM_u_blur lowp float blur = u_blur; #endif + #ifdef HAS_UNIFORM_u_opacity lowp float opacity = u_opacity; #endif + #ifdef HAS_UNIFORM_u_stroke_color highp vec4 stroke_color = u_stroke_color; #endif + #ifdef HAS_UNIFORM_u_stroke_width mediump float stroke_width = u_stroke_width; #endif + #ifdef HAS_UNIFORM_u_stroke_opacity lowp float stroke_opacity = u_stroke_opacity; #endif + vec2 extrude = v_data.xy; float extrude_length = length(extrude); diff --git a/src/mbgl/shaders/collision_box.cpp b/src/mbgl/shaders/collision_box.cpp index 5f733c6a1e..9d11640bf4 100644 --- a/src/mbgl/shaders/collision_box.cpp +++ b/src/mbgl/shaders/collision_box.cpp @@ -8,49 +8,52 @@ namespace shaders { const char* collision_box::name = "collision_box"; const char* collision_box::vertexSource = R"MBGL_SHADER( attribute vec2 a_pos; +attribute vec2 a_anchor_pos; attribute vec2 a_extrude; -attribute vec2 a_data; +attribute vec2 a_placed; uniform mat4 u_matrix; -uniform float u_scale; +uniform vec2 u_extrude_scale; +uniform float u_camera_to_center_distance; -varying float v_max_zoom; -varying float v_placement_zoom; +varying float v_placed; +varying float v_notUsed; void main() { - gl_Position = u_matrix * vec4(a_pos + a_extrude / u_scale, 0.0, 1.0); + vec4 projectedPoint = u_matrix * vec4(a_anchor_pos, 0, 1); + highp float camera_to_anchor_distance = projectedPoint.w; + highp float collision_perspective_ratio = 0.5 + 0.5 * (u_camera_to_center_distance / camera_to_anchor_distance); - v_max_zoom = a_data.x; - v_placement_zoom = a_data.y; + gl_Position = u_matrix * vec4(a_pos, 0.0, 1.0); + gl_Position.xy += a_extrude * u_extrude_scale * gl_Position.w * collision_perspective_ratio; + + v_placed = a_placed.x; + v_notUsed = a_placed.y; } )MBGL_SHADER"; const char* collision_box::fragmentSource = R"MBGL_SHADER( -uniform float u_zoom; -uniform float u_maxzoom; -varying float v_max_zoom; -varying float v_placement_zoom; +varying float v_placed; +varying float v_notUsed; void main() { float alpha = 0.5; - gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0) * alpha; - - if (v_placement_zoom > u_zoom) { - gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0) * alpha; - } + // Red = collision, hide label + gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0) * alpha; - if (u_zoom >= v_max_zoom) { - gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0) * alpha * 0.25; + // Blue = no collision, label is showing + if (v_placed > 0.5) { + gl_FragColor = vec4(0.0, 0.0, 1.0, 0.5) * alpha; } - if (v_placement_zoom >= u_maxzoom) { - gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0) * alpha * 0.2; + if (v_notUsed > 0.5) { + // This box not used, fade it out + gl_FragColor *= .1; } } - )MBGL_SHADER"; } // namespace shaders diff --git a/src/mbgl/shaders/collision_circle.cpp b/src/mbgl/shaders/collision_circle.cpp new file mode 100644 index 0000000000..1e85d99a33 --- /dev/null +++ b/src/mbgl/shaders/collision_circle.cpp @@ -0,0 +1,83 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#include <mbgl/shaders/collision_circle.hpp> + +namespace mbgl { +namespace shaders { + +const char* collision_circle::name = "collision_circle"; +const char* collision_circle::vertexSource = R"MBGL_SHADER( +attribute vec2 a_pos; +attribute vec2 a_anchor_pos; +attribute vec2 a_extrude; +attribute vec2 a_placed; + +uniform mat4 u_matrix; +uniform vec2 u_extrude_scale; +uniform float u_camera_to_center_distance; + +varying float v_placed; +varying float v_notUsed; +varying float v_radius; + +varying vec2 v_extrude; +varying vec2 v_extrude_scale; + +void main() { + vec4 projectedPoint = u_matrix * vec4(a_anchor_pos, 0, 1); + highp float camera_to_anchor_distance = projectedPoint.w; + highp float collision_perspective_ratio = 0.5 + 0.5 * (camera_to_anchor_distance / u_camera_to_center_distance); + + gl_Position = u_matrix * vec4(a_pos, 0.0, 1.0); + + highp float padding_factor = 1.2; // Pad the vertices slightly to make room for anti-alias blur + gl_Position.xy += a_extrude * u_extrude_scale * padding_factor * gl_Position.w / collision_perspective_ratio; + + v_placed = a_placed.x; + v_notUsed = a_placed.y; + v_radius = abs(a_extrude.y); // We don't pitch the circles, so both units of the extrusion vector are equal in magnitude to the radius + + v_extrude = a_extrude * padding_factor; + v_extrude_scale = u_extrude_scale * u_camera_to_center_distance / collision_perspective_ratio; +} + +)MBGL_SHADER"; +const char* collision_circle::fragmentSource = R"MBGL_SHADER( + +varying float v_placed; +varying float v_notUsed; +varying float v_radius; +varying vec2 v_extrude; +varying vec2 v_extrude_scale; + +void main() { + float alpha = 0.5; + + // Red = collision, hide label + vec4 color = vec4(1.0, 0.0, 0.0, 1.0) * alpha; + + // Blue = no collision, label is showing + if (v_placed > 0.5) { + color = vec4(0.0, 0.0, 1.0, 0.5) * alpha; + } + + if (v_notUsed > 0.5) { + // This box not used, fade it out + color *= .2; + } + + float extrude_scale_length = length(v_extrude_scale); + float extrude_length = length(v_extrude) * extrude_scale_length; + float stroke_width = 3.0; + float radius = v_radius * extrude_scale_length; + + float distance_to_edge = abs(extrude_length - radius); + float opacity_t = smoothstep(-stroke_width, 0.0, -distance_to_edge); + + gl_FragColor = opacity_t * color; +} + +)MBGL_SHADER"; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/collision_circle.hpp b/src/mbgl/shaders/collision_circle.hpp new file mode 100644 index 0000000000..12b1bcd445 --- /dev/null +++ b/src/mbgl/shaders/collision_circle.hpp @@ -0,0 +1,16 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#pragma once + +namespace mbgl { +namespace shaders { + +class collision_circle { +public: + static const char* name; + static const char* vertexSource; + static const char* fragmentSource; +}; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/debug.cpp b/src/mbgl/shaders/debug.cpp index d39dcf25be..9012cfa755 100644 --- a/src/mbgl/shaders/debug.cpp +++ b/src/mbgl/shaders/debug.cpp @@ -12,7 +12,7 @@ attribute vec2 a_pos; uniform mat4 u_matrix; void main() { - gl_Position = u_matrix * vec4(a_pos, step(32767.0, a_pos.x), 1); + gl_Position = u_matrix * vec4(a_pos, 0, 1); } )MBGL_SHADER"; diff --git a/src/mbgl/shaders/fill.cpp b/src/mbgl/shaders/fill.cpp index 8f5f304014..3ba00836a2 100644 --- a/src/mbgl/shaders/fill.cpp +++ b/src/mbgl/shaders/fill.cpp @@ -20,6 +20,7 @@ varying highp vec4 color; uniform highp vec4 u_color; #endif + #ifndef HAS_UNIFORM_u_opacity uniform lowp float a_opacity_t; attribute lowp vec2 a_opacity; @@ -28,20 +29,23 @@ varying lowp float opacity; uniform lowp float u_opacity; #endif -void main() { +void main() { + #ifndef HAS_UNIFORM_u_color color = unpack_mix_vec4(a_color, a_color_t); #else highp vec4 color = u_color; #endif + #ifndef HAS_UNIFORM_u_opacity opacity = unpack_mix_vec2(a_opacity, a_opacity_t); #else lowp float opacity = u_opacity; #endif + gl_Position = u_matrix * vec4(a_pos, 0, 1); } @@ -54,22 +58,26 @@ varying highp vec4 color; uniform highp vec4 u_color; #endif + #ifndef HAS_UNIFORM_u_opacity varying lowp float opacity; #else uniform lowp float u_opacity; #endif -void main() { +void main() { + #ifdef HAS_UNIFORM_u_color highp vec4 color = u_color; #endif + #ifdef HAS_UNIFORM_u_opacity lowp float opacity = u_opacity; #endif + gl_FragColor = color * opacity; #ifdef OVERDRAW_INSPECTOR diff --git a/src/mbgl/shaders/fill_extrusion.cpp b/src/mbgl/shaders/fill_extrusion.cpp index ad14e4f32e..5bb2b9cd07 100644 --- a/src/mbgl/shaders/fill_extrusion.cpp +++ b/src/mbgl/shaders/fill_extrusion.cpp @@ -13,8 +13,7 @@ uniform lowp vec3 u_lightpos; uniform lowp float u_lightintensity; attribute vec2 a_pos; -attribute vec3 a_normal; -attribute float a_edgedistance; +attribute vec4 a_normal_ed; varying vec4 v_color; @@ -27,6 +26,7 @@ varying lowp float base; uniform lowp float u_base; #endif + #ifndef HAS_UNIFORM_u_height uniform lowp float a_height_t; attribute lowp vec2 a_height; @@ -36,6 +36,7 @@ uniform lowp float u_height; #endif + #ifndef HAS_UNIFORM_u_color uniform lowp float a_color_t; attribute highp vec4 a_color; @@ -44,31 +45,36 @@ varying highp vec4 color; uniform highp vec4 u_color; #endif -void main() { +void main() { + #ifndef HAS_UNIFORM_u_base base = unpack_mix_vec2(a_base, a_base_t); #else lowp float base = u_base; #endif + #ifndef HAS_UNIFORM_u_height height = unpack_mix_vec2(a_height, a_height_t); #else lowp float height = u_height; #endif + #ifndef HAS_UNIFORM_u_color color = unpack_mix_vec4(a_color, a_color_t); #else highp vec4 color = u_color; #endif + + vec3 normal = a_normal_ed.xyz; + base = max(0.0, base); height = max(0.0, height); - float ed = a_edgedistance; // use each attrib in order to not trip a VAO assert - float t = mod(a_normal.x, 2.0); + float t = mod(normal.x, 2.0); gl_Position = u_matrix * vec4(a_pos, t > 0.0 ? height : base, 1); @@ -82,7 +88,7 @@ void main() { color += ambientlight; // Calculate cos(theta), where theta is the angle between surface normal and diffuse light ray - float directional = clamp(dot(a_normal / 16384.0, u_lightpos), 0.0, 1.0); + float directional = clamp(dot(normal / 16384.0, u_lightpos), 0.0, 1.0); // Adjust directional so that // the range of values for highlight/shading is narrower @@ -91,7 +97,7 @@ void main() { directional = mix((1.0 - u_lightintensity), max((1.0 - colorvalue + u_lightintensity), 1.0), directional); // Add gradient along z axis of side surfaces - if (a_normal.y != 0.0) { + if (normal.y != 0.0) { directional *= clamp((t + base) * pow(height / 150.0, 0.5), mix(0.7, 0.98, 1.0 - u_lightintensity), 1.0); } @@ -113,32 +119,38 @@ varying lowp float base; uniform lowp float u_base; #endif + #ifndef HAS_UNIFORM_u_height varying lowp float height; #else uniform lowp float u_height; #endif + #ifndef HAS_UNIFORM_u_color varying highp vec4 color; #else uniform highp vec4 u_color; #endif -void main() { +void main() { + #ifdef HAS_UNIFORM_u_base lowp float base = u_base; #endif + #ifdef HAS_UNIFORM_u_height lowp float height = u_height; #endif + #ifdef HAS_UNIFORM_u_color highp vec4 color = u_color; #endif + gl_FragColor = v_color; #ifdef OVERDRAW_INSPECTOR diff --git a/src/mbgl/shaders/fill_extrusion_pattern.cpp b/src/mbgl/shaders/fill_extrusion_pattern.cpp index 2681973af6..466d0e04fe 100644 --- a/src/mbgl/shaders/fill_extrusion_pattern.cpp +++ b/src/mbgl/shaders/fill_extrusion_pattern.cpp @@ -22,8 +22,7 @@ uniform lowp vec3 u_lightpos; uniform lowp float u_lightintensity; attribute vec2 a_pos; -attribute vec3 a_normal; -attribute float a_edgedistance; +attribute vec4 a_normal_ed; varying vec2 v_pos_a; varying vec2 v_pos_b; @@ -39,6 +38,7 @@ varying lowp float base; uniform lowp float u_base; #endif + #ifndef HAS_UNIFORM_u_height uniform lowp float a_height_t; attribute lowp vec2 a_height; @@ -47,40 +47,46 @@ varying lowp float height; uniform lowp float u_height; #endif -void main() { +void main() { + #ifndef HAS_UNIFORM_u_base base = unpack_mix_vec2(a_base, a_base_t); #else lowp float base = u_base; #endif + #ifndef HAS_UNIFORM_u_height height = unpack_mix_vec2(a_height, a_height_t); #else lowp float height = u_height; #endif + + vec3 normal = a_normal_ed.xyz; + float edgedistance = a_normal_ed.w; + base = max(0.0, base); height = max(0.0, height); - float t = mod(a_normal.x, 2.0); + float t = mod(normal.x, 2.0); float z = t > 0.0 ? height : base; gl_Position = u_matrix * vec4(a_pos, z, 1); - vec2 pos = a_normal.x == 1.0 && a_normal.y == 0.0 && a_normal.z == 16384.0 + vec2 pos = normal.x == 1.0 && normal.y == 0.0 && normal.z == 16384.0 ? a_pos // extrusion top - : vec2(a_edgedistance, z * u_height_factor); // extrusion side + : vec2(edgedistance, z * u_height_factor); // extrusion side v_pos_a = get_pattern_pos(u_pixel_coord_upper, u_pixel_coord_lower, u_scale_a * u_pattern_size_a, u_tile_units_to_pixels, pos); v_pos_b = get_pattern_pos(u_pixel_coord_upper, u_pixel_coord_lower, u_scale_b * u_pattern_size_b, u_tile_units_to_pixels, pos); v_lighting = vec4(0.0, 0.0, 0.0, 1.0); - float directional = clamp(dot(a_normal / 16383.0, u_lightpos), 0.0, 1.0); + float directional = clamp(dot(normal / 16383.0, u_lightpos), 0.0, 1.0); directional = mix((1.0 - u_lightintensity), max((0.5 + u_lightintensity), 1.0), directional); - if (a_normal.y != 0.0) { + if (normal.y != 0.0) { directional *= clamp((t + base) * pow(height / 150.0, 0.5), mix(0.7, 0.98, 1.0 - u_lightintensity), 1.0); } @@ -109,22 +115,26 @@ varying lowp float base; uniform lowp float u_base; #endif + #ifndef HAS_UNIFORM_u_height varying lowp float height; #else uniform lowp float u_height; #endif -void main() { +void main() { + #ifdef HAS_UNIFORM_u_base lowp float base = u_base; #endif + #ifdef HAS_UNIFORM_u_height lowp float height = u_height; #endif + vec2 imagecoord = mod(v_pos_a, 1.0); vec2 pos = mix(u_pattern_tl_a / u_texsize, u_pattern_br_a / u_texsize, imagecoord); vec4 color1 = texture2D(u_image, pos); diff --git a/src/mbgl/shaders/fill_outline.cpp b/src/mbgl/shaders/fill_outline.cpp index 18a4d8c0a8..9ade598d10 100644 --- a/src/mbgl/shaders/fill_outline.cpp +++ b/src/mbgl/shaders/fill_outline.cpp @@ -23,6 +23,7 @@ varying highp vec4 outline_color; uniform highp vec4 u_outline_color; #endif + #ifndef HAS_UNIFORM_u_opacity uniform lowp float a_opacity_t; attribute lowp vec2 a_opacity; @@ -31,20 +32,23 @@ varying lowp float opacity; uniform lowp float u_opacity; #endif -void main() { +void main() { + #ifndef HAS_UNIFORM_u_outline_color outline_color = unpack_mix_vec4(a_outline_color, a_outline_color_t); #else highp vec4 outline_color = u_outline_color; #endif + #ifndef HAS_UNIFORM_u_opacity opacity = unpack_mix_vec2(a_opacity, a_opacity_t); #else lowp float opacity = u_opacity; #endif + gl_Position = u_matrix * vec4(a_pos, 0, 1); v_pos = (gl_Position.xy / gl_Position.w + 1.0) / 2.0 * u_world; } @@ -58,24 +62,28 @@ varying highp vec4 outline_color; uniform highp vec4 u_outline_color; #endif + #ifndef HAS_UNIFORM_u_opacity varying lowp float opacity; #else uniform lowp float u_opacity; #endif + varying vec2 v_pos; void main() { - + #ifdef HAS_UNIFORM_u_outline_color highp vec4 outline_color = u_outline_color; #endif + #ifdef HAS_UNIFORM_u_opacity lowp float opacity = u_opacity; #endif + float dist = length(v_pos - gl_FragCoord.xy); float alpha = 1.0 - smoothstep(0.0, 1.0, dist); gl_FragColor = outline_color * (alpha * opacity); diff --git a/src/mbgl/shaders/fill_outline_pattern.cpp b/src/mbgl/shaders/fill_outline_pattern.cpp index 68e69c2135..11cddb7d07 100644 --- a/src/mbgl/shaders/fill_outline_pattern.cpp +++ b/src/mbgl/shaders/fill_outline_pattern.cpp @@ -32,14 +32,16 @@ varying lowp float opacity; uniform lowp float u_opacity; #endif -void main() { +void main() { + #ifndef HAS_UNIFORM_u_opacity opacity = unpack_mix_vec2(a_opacity, a_opacity_t); #else lowp float opacity = u_opacity; #endif + gl_Position = u_matrix * vec4(a_pos, 0, 1); v_pos_a = get_pattern_pos(u_pixel_coord_upper, u_pixel_coord_lower, u_scale_a * u_pattern_size_a, u_tile_units_to_pixels, a_pos); @@ -70,12 +72,14 @@ varying lowp float opacity; uniform lowp float u_opacity; #endif -void main() { +void main() { + #ifdef HAS_UNIFORM_u_opacity lowp float opacity = u_opacity; #endif + vec2 imagecoord = mod(v_pos_a, 1.0); vec2 pos = mix(u_pattern_tl_a / u_texsize, u_pattern_br_a / u_texsize, imagecoord); vec4 color1 = texture2D(u_image, pos); diff --git a/src/mbgl/shaders/fill_pattern.cpp b/src/mbgl/shaders/fill_pattern.cpp index f6f9e2fbff..a3817c4426 100644 --- a/src/mbgl/shaders/fill_pattern.cpp +++ b/src/mbgl/shaders/fill_pattern.cpp @@ -30,14 +30,16 @@ varying lowp float opacity; uniform lowp float u_opacity; #endif -void main() { +void main() { + #ifndef HAS_UNIFORM_u_opacity opacity = unpack_mix_vec2(a_opacity, a_opacity_t); #else lowp float opacity = u_opacity; #endif + gl_Position = u_matrix * vec4(a_pos, 0, 1); v_pos_a = get_pattern_pos(u_pixel_coord_upper, u_pixel_coord_lower, u_scale_a * u_pattern_size_a, u_tile_units_to_pixels, a_pos); @@ -65,12 +67,14 @@ varying lowp float opacity; uniform lowp float u_opacity; #endif -void main() { +void main() { + #ifdef HAS_UNIFORM_u_opacity lowp float opacity = u_opacity; #endif + vec2 imagecoord = mod(v_pos_a, 1.0); vec2 pos = mix(u_pattern_tl_a / u_texsize, u_pattern_br_a / u_texsize, imagecoord); vec4 color1 = texture2D(u_image, pos); diff --git a/src/mbgl/shaders/line.cpp b/src/mbgl/shaders/line.cpp index 1eb92c4b71..c700295a15 100644 --- a/src/mbgl/shaders/line.cpp +++ b/src/mbgl/shaders/line.cpp @@ -21,7 +21,7 @@ const char* line::vertexSource = R"MBGL_SHADER( // #define scale 63.0 #define scale 0.015873016 -attribute vec2 a_pos; +attribute vec4 a_pos_normal; attribute vec4 a_data; uniform mat4 u_matrix; @@ -41,6 +41,7 @@ varying highp vec4 color; uniform highp vec4 u_color; #endif + #ifndef HAS_UNIFORM_u_blur uniform lowp float a_blur_t; attribute lowp vec2 a_blur; @@ -49,6 +50,7 @@ varying lowp float blur; uniform lowp float u_blur; #endif + #ifndef HAS_UNIFORM_u_opacity uniform lowp float a_opacity_t; attribute lowp vec2 a_opacity; @@ -57,6 +59,7 @@ varying lowp float opacity; uniform lowp float u_opacity; #endif + #ifndef HAS_UNIFORM_u_gapwidth uniform lowp float a_gapwidth_t; attribute mediump vec2 a_gapwidth; @@ -64,6 +67,7 @@ attribute mediump vec2 a_gapwidth; uniform mediump float u_gapwidth; #endif + #ifndef HAS_UNIFORM_u_offset uniform lowp float a_offset_t; attribute lowp vec2 a_offset; @@ -71,6 +75,7 @@ attribute lowp vec2 a_offset; uniform lowp float u_offset; #endif + #ifndef HAS_UNIFORM_u_width uniform lowp float a_width_t; attribute mediump vec2 a_width; @@ -78,61 +83,66 @@ attribute mediump vec2 a_width; uniform mediump float u_width; #endif -void main() { +void main() { + #ifndef HAS_UNIFORM_u_color color = unpack_mix_vec4(a_color, a_color_t); #else highp vec4 color = u_color; #endif + #ifndef HAS_UNIFORM_u_blur blur = unpack_mix_vec2(a_blur, a_blur_t); #else lowp float blur = u_blur; #endif + #ifndef HAS_UNIFORM_u_opacity opacity = unpack_mix_vec2(a_opacity, a_opacity_t); #else lowp float opacity = u_opacity; #endif + #ifndef HAS_UNIFORM_u_gapwidth mediump float gapwidth = unpack_mix_vec2(a_gapwidth, a_gapwidth_t); #else mediump float gapwidth = u_gapwidth; #endif + #ifndef HAS_UNIFORM_u_offset lowp float offset = unpack_mix_vec2(a_offset, a_offset_t); #else lowp float offset = u_offset; #endif + #ifndef HAS_UNIFORM_u_width mediump float width = unpack_mix_vec2(a_width, a_width_t); #else mediump float width = u_width; #endif + vec2 a_extrude = a_data.xy - 128.0; float a_direction = mod(a_data.z, 4.0) - 1.0; - // We store the texture normals in the most insignificant bit - // transform y so that 0 => -1 and 1 => 1 - // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap + vec2 pos = a_pos_normal.xy; + + // x is 1 if it's a round cap, 0 otherwise // y is 1 if the normal points up, and -1 if it points down - mediump vec2 normal = mod(a_pos, 2.0); - normal.y = sign(normal.y - 0.5); + mediump vec2 normal = a_pos_normal.zw; v_normal = normal; - - // these transformations used to be applied in the JS and native code bases. - // moved them into the shader for clarity and simplicity. + // these transformations used to be applied in the JS and native code bases. + // moved them into the shader for clarity and simplicity. gapwidth = gapwidth / 2.0; float halfwidth = width / 2.0; - offset = -1.0 * offset; + offset = -1.0 * offset; float inset = gapwidth + (gapwidth > 0.0 ? ANTIALIASING : 0.0); float outset = gapwidth + halfwidth * (gapwidth > 0.0 ? 2.0 : 1.0) + ANTIALIASING; @@ -149,9 +159,6 @@ void main() { mediump float t = 1.0 - abs(u); mediump vec2 offset2 = offset * a_extrude * scale * normal.y * mat2(t, -u, u, t); - // Remove the texture normal bit to get the position - vec2 pos = floor(a_pos * 0.5); - vec4 projected_extrude = u_matrix * vec4(dist / u_ratio, 0.0, 0.0); gl_Position = u_matrix * vec4(pos + offset2 / u_ratio, 0.0, 1.0) + projected_extrude; @@ -172,36 +179,42 @@ varying highp vec4 color; uniform highp vec4 u_color; #endif + #ifndef HAS_UNIFORM_u_blur varying lowp float blur; #else uniform lowp float u_blur; #endif + #ifndef HAS_UNIFORM_u_opacity varying lowp float opacity; #else uniform lowp float u_opacity; #endif + varying vec2 v_width2; varying vec2 v_normal; varying float v_gamma_scale; void main() { - + #ifdef HAS_UNIFORM_u_color highp vec4 color = u_color; #endif + #ifdef HAS_UNIFORM_u_blur lowp float blur = u_blur; #endif + #ifdef HAS_UNIFORM_u_opacity lowp float opacity = u_opacity; #endif + // Calculate the distance of the pixel from the line in pixels. float dist = length(v_normal) * v_width2.s; diff --git a/src/mbgl/shaders/line_pattern.cpp b/src/mbgl/shaders/line_pattern.cpp index 222042a13c..f8d785ade9 100644 --- a/src/mbgl/shaders/line_pattern.cpp +++ b/src/mbgl/shaders/line_pattern.cpp @@ -23,7 +23,7 @@ const char* line_pattern::vertexSource = R"MBGL_SHADER( // Retina devices need a smaller distance to avoid aliasing. #define ANTIALIASING 1.0 / DEVICE_PIXEL_RATIO / 2.0 -attribute vec2 a_pos; +attribute vec4 a_pos_normal; attribute vec4 a_data; uniform mat4 u_matrix; @@ -44,6 +44,7 @@ varying lowp float blur; uniform lowp float u_blur; #endif + #ifndef HAS_UNIFORM_u_opacity uniform lowp float a_opacity_t; attribute lowp vec2 a_opacity; @@ -52,6 +53,7 @@ varying lowp float opacity; uniform lowp float u_opacity; #endif + #ifndef HAS_UNIFORM_u_offset uniform lowp float a_offset_t; attribute lowp vec2 a_offset; @@ -59,6 +61,7 @@ attribute lowp vec2 a_offset; uniform lowp float u_offset; #endif + #ifndef HAS_UNIFORM_u_gapwidth uniform lowp float a_gapwidth_t; attribute mediump vec2 a_gapwidth; @@ -66,6 +69,7 @@ attribute mediump vec2 a_gapwidth; uniform mediump float u_gapwidth; #endif + #ifndef HAS_UNIFORM_u_width uniform lowp float a_width_t; attribute mediump vec2 a_width; @@ -73,55 +77,60 @@ attribute mediump vec2 a_width; uniform mediump float u_width; #endif -void main() { +void main() { + #ifndef HAS_UNIFORM_u_blur blur = unpack_mix_vec2(a_blur, a_blur_t); #else lowp float blur = u_blur; #endif + #ifndef HAS_UNIFORM_u_opacity opacity = unpack_mix_vec2(a_opacity, a_opacity_t); #else lowp float opacity = u_opacity; #endif + #ifndef HAS_UNIFORM_u_offset lowp float offset = unpack_mix_vec2(a_offset, a_offset_t); #else lowp float offset = u_offset; #endif + #ifndef HAS_UNIFORM_u_gapwidth mediump float gapwidth = unpack_mix_vec2(a_gapwidth, a_gapwidth_t); #else mediump float gapwidth = u_gapwidth; #endif + #ifndef HAS_UNIFORM_u_width mediump float width = unpack_mix_vec2(a_width, a_width_t); #else mediump float width = u_width; #endif + vec2 a_extrude = a_data.xy - 128.0; float a_direction = mod(a_data.z, 4.0) - 1.0; float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE; - // We store the texture normals in the most insignificant bit - // transform y so that 0 => -1 and 1 => 1 - // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap + vec2 pos = a_pos_normal.xy; + + // x is 1 if it's a round cap, 0 otherwise // y is 1 if the normal points up, and -1 if it points down - mediump vec2 normal = mod(a_pos, 2.0); - normal.y = sign(normal.y - 0.5); + mediump vec2 normal = a_pos_normal.zw; v_normal = normal; - // these transformations used to be applied in the JS and native code bases. - // moved them into the shader for clarity and simplicity. + // these transformations used to be applied in the JS and native code bases. + // moved them into the shader for clarity and simplicity. gapwidth = gapwidth / 2.0; float halfwidth = width / 2.0; - offset = -1.0 * offset; + offset = -1.0 * offset; float inset = gapwidth + (gapwidth > 0.0 ? ANTIALIASING : 0.0); float outset = gapwidth + halfwidth * (gapwidth > 0.0 ? 2.0 : 1.0) + ANTIALIASING; @@ -138,9 +147,6 @@ void main() { mediump float t = 1.0 - abs(u); mediump vec2 offset2 = offset * a_extrude * scale * normal.y * mat2(t, -u, u, t); - // Remove the texture normal bit to get the position - vec2 pos = floor(a_pos * 0.5); - vec4 projected_extrude = u_matrix * vec4(dist / u_ratio, 0.0, 0.0); gl_Position = u_matrix * vec4(pos + offset2 / u_ratio, 0.0, 1.0) + projected_extrude; @@ -178,22 +184,26 @@ varying lowp float blur; uniform lowp float u_blur; #endif + #ifndef HAS_UNIFORM_u_opacity varying lowp float opacity; #else uniform lowp float u_opacity; #endif -void main() { +void main() { + #ifdef HAS_UNIFORM_u_blur lowp float blur = u_blur; #endif + #ifdef HAS_UNIFORM_u_opacity lowp float opacity = u_opacity; #endif + // Calculate the distance of the pixel from the line in pixels. float dist = length(v_normal) * v_width2.s; diff --git a/src/mbgl/shaders/line_sdf.cpp b/src/mbgl/shaders/line_sdf.cpp index 168f4ca98d..c5d50566e8 100644 --- a/src/mbgl/shaders/line_sdf.cpp +++ b/src/mbgl/shaders/line_sdf.cpp @@ -23,7 +23,7 @@ const char* line_sdf::vertexSource = R"MBGL_SHADER( // Retina devices need a smaller distance to avoid aliasing. #define ANTIALIASING 1.0 / DEVICE_PIXEL_RATIO / 2.0 -attribute vec2 a_pos; +attribute vec4 a_pos_normal; attribute vec4 a_data; uniform mat4 u_matrix; @@ -49,6 +49,7 @@ varying highp vec4 color; uniform highp vec4 u_color; #endif + #ifndef HAS_UNIFORM_u_blur uniform lowp float a_blur_t; attribute lowp vec2 a_blur; @@ -57,6 +58,7 @@ varying lowp float blur; uniform lowp float u_blur; #endif + #ifndef HAS_UNIFORM_u_opacity uniform lowp float a_opacity_t; attribute lowp vec2 a_opacity; @@ -65,6 +67,7 @@ varying lowp float opacity; uniform lowp float u_opacity; #endif + #ifndef HAS_UNIFORM_u_gapwidth uniform lowp float a_gapwidth_t; attribute mediump vec2 a_gapwidth; @@ -72,6 +75,7 @@ attribute mediump vec2 a_gapwidth; uniform mediump float u_gapwidth; #endif + #ifndef HAS_UNIFORM_u_offset uniform lowp float a_offset_t; attribute lowp vec2 a_offset; @@ -79,6 +83,7 @@ attribute lowp vec2 a_offset; uniform lowp float u_offset; #endif + #ifndef HAS_UNIFORM_u_width uniform lowp float a_width_t; attribute mediump vec2 a_width; @@ -87,6 +92,7 @@ varying mediump float width; uniform mediump float u_width; #endif + #ifndef HAS_UNIFORM_u_floorwidth uniform lowp float a_floorwidth_t; attribute lowp vec2 a_floorwidth; @@ -95,68 +101,75 @@ varying lowp float floorwidth; uniform lowp float u_floorwidth; #endif -void main() { +void main() { + #ifndef HAS_UNIFORM_u_color color = unpack_mix_vec4(a_color, a_color_t); #else highp vec4 color = u_color; #endif + #ifndef HAS_UNIFORM_u_blur blur = unpack_mix_vec2(a_blur, a_blur_t); #else lowp float blur = u_blur; #endif + #ifndef HAS_UNIFORM_u_opacity opacity = unpack_mix_vec2(a_opacity, a_opacity_t); #else lowp float opacity = u_opacity; #endif + #ifndef HAS_UNIFORM_u_gapwidth mediump float gapwidth = unpack_mix_vec2(a_gapwidth, a_gapwidth_t); #else mediump float gapwidth = u_gapwidth; #endif + #ifndef HAS_UNIFORM_u_offset lowp float offset = unpack_mix_vec2(a_offset, a_offset_t); #else lowp float offset = u_offset; #endif + #ifndef HAS_UNIFORM_u_width width = unpack_mix_vec2(a_width, a_width_t); #else mediump float width = u_width; #endif + #ifndef HAS_UNIFORM_u_floorwidth floorwidth = unpack_mix_vec2(a_floorwidth, a_floorwidth_t); #else lowp float floorwidth = u_floorwidth; #endif + vec2 a_extrude = a_data.xy - 128.0; float a_direction = mod(a_data.z, 4.0) - 1.0; float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE; - // We store the texture normals in the most insignificant bit - // transform y so that 0 => -1 and 1 => 1 - // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap + vec2 pos = a_pos_normal.xy; + + // x is 1 if it's a round cap, 0 otherwise // y is 1 if the normal points up, and -1 if it points down - mediump vec2 normal = mod(a_pos, 2.0); - normal.y = sign(normal.y - 0.5); + mediump vec2 normal = a_pos_normal.zw; v_normal = normal; - // these transformations used to be applied in the JS and native code bases. - // moved them into the shader for clarity and simplicity. + // these transformations used to be applied in the JS and native code bases. + // moved them into the shader for clarity and simplicity. gapwidth = gapwidth / 2.0; float halfwidth = width / 2.0; offset = -1.0 * offset; - + float inset = gapwidth + (gapwidth > 0.0 ? ANTIALIASING : 0.0); float outset = gapwidth + halfwidth * (gapwidth > 0.0 ? 2.0 : 1.0) + ANTIALIASING; @@ -172,9 +185,6 @@ void main() { mediump float t = 1.0 - abs(u); mediump vec2 offset2 = offset * a_extrude * scale * normal.y * mat2(t, -u, u, t); - // Remove the texture normal bit to get the position - vec2 pos = floor(a_pos * 0.5); - vec4 projected_extrude = u_matrix * vec4(dist / u_ratio, 0.0, 0.0); gl_Position = u_matrix * vec4(pos + offset2 / u_ratio, 0.0, 1.0) + projected_extrude; @@ -209,52 +219,62 @@ varying highp vec4 color; uniform highp vec4 u_color; #endif + #ifndef HAS_UNIFORM_u_blur varying lowp float blur; #else uniform lowp float u_blur; #endif + #ifndef HAS_UNIFORM_u_opacity varying lowp float opacity; #else uniform lowp float u_opacity; #endif + #ifndef HAS_UNIFORM_u_width varying mediump float width; #else uniform mediump float u_width; #endif + #ifndef HAS_UNIFORM_u_floorwidth varying lowp float floorwidth; #else uniform lowp float u_floorwidth; #endif -void main() { +void main() { + #ifdef HAS_UNIFORM_u_color highp vec4 color = u_color; #endif + #ifdef HAS_UNIFORM_u_blur lowp float blur = u_blur; #endif + #ifdef HAS_UNIFORM_u_opacity lowp float opacity = u_opacity; #endif + #ifdef HAS_UNIFORM_u_width mediump float width = u_width; #endif + #ifdef HAS_UNIFORM_u_floorwidth lowp float floorwidth = u_floorwidth; #endif + // Calculate the distance of the pixel from the line in pixels. float dist = length(v_normal) * v_width2.s; diff --git a/src/mbgl/shaders/preludes.cpp b/src/mbgl/shaders/preludes.cpp index 95fa624e8d..6baa488a10 100644 --- a/src/mbgl/shaders/preludes.cpp +++ b/src/mbgl/shaders/preludes.cpp @@ -24,25 +24,6 @@ precision highp float; #endif -float evaluate_zoom_function_1(const vec4 values, const float t) { - if (t < 1.0) { - return mix(values[0], values[1], t); - } else if (t < 2.0) { - return mix(values[1], values[2], t - 1.0); - } else { - return mix(values[2], values[3], t - 2.0); - } -} -vec4 evaluate_zoom_function_4(const vec4 value0, const vec4 value1, const vec4 value2, const vec4 value3, const float t) { - if (t < 1.0) { - return mix(value0, value1, t); - } else if (t < 2.0) { - return mix(value1, value2, t - 1.0); - } else { - return mix(value2, value3, t - 2.0); - } -} - // Unpack a pair of values that have been packed into a single float. // The packed values are assumed to be 8-bit unsigned integers, and are // packed like so: @@ -53,9 +34,13 @@ vec2 unpack_float(const float packedValue) { return vec2(v0, packedIntValue - v0 * 256); } +vec2 unpack_opacity(const float packedOpacity) { + int intOpacity = int(packedOpacity) / 2; + return vec2(float(intOpacity) / 127.0, mod(packedOpacity, 2.0)); +} -// To minimize the number of attributes needed in the mapbox-gl-native shaders, -// we encode a 4-component color into a pair of floats (i.e. a vec2) as follows: +// To minimize the number of attributes needed, we encode a 4-component +// color into a pair of floats (i.e. a vec2) as follows: // [ floor(color.r * 255) * 256 + color.g * 255, // floor(color.b * 255) * 256 + color.g * 255 ] vec4 decode_color(const vec2 encodedColor) { diff --git a/src/mbgl/shaders/raster.cpp b/src/mbgl/shaders/raster.cpp index eb7a2db240..98291bfec6 100644 --- a/src/mbgl/shaders/raster.cpp +++ b/src/mbgl/shaders/raster.cpp @@ -20,7 +20,12 @@ varying vec2 v_pos1; void main() { gl_Position = u_matrix * vec4(a_pos, 0, 1); - v_pos0 = (((a_texture_pos / 32767.0) - 0.5) / u_buffer_scale ) + 0.5; + // We are using Int16 for texture position coordinates to give us enough precision for + // fractional coordinates. We use 8192 to scale the texture coordinates in the buffer + // as an arbitrarily high number to preserve adequate precision when rendering. + // This is also the same value as the EXTENT we are using for our tile buffer pos coordinates, + // so math for modifying either is consistent. + v_pos0 = (((a_texture_pos / 8192.0) - 0.5) / u_buffer_scale ) + 0.5; v_pos1 = (v_pos0 * u_scale_parent) + u_tl_parent; } @@ -45,6 +50,12 @@ void main() { // read and cross-fade colors from the main and parent tiles vec4 color0 = texture2D(u_image0, v_pos0); vec4 color1 = texture2D(u_image1, v_pos1); + if (color0.a > 0.0) { + color0.rgb = color0.rgb / color0.a; + } + if (color1.a > 0.0) { + color1.rgb = color1.rgb / color1.a; + } vec4 color = mix(color0, color1, u_fade_t); color.a *= u_opacity; vec3 rgb = color.rgb; diff --git a/src/mbgl/shaders/shaders.cpp b/src/mbgl/shaders/shaders.cpp index 31ff405f02..2e5a318024 100644 --- a/src/mbgl/shaders/shaders.cpp +++ b/src/mbgl/shaders/shaders.cpp @@ -22,6 +22,7 @@ std::string programIdentifier(const std::string& vertexSource, const std::string ss << std::setfill('0') << std::setw(sizeof(size_t) * 2) << std::hex; ss << std::hash<std::string>()(vertexSource); ss << std::hash<std::string>()(fragmentSource); + ss << "v2"; return ss.str(); } diff --git a/src/mbgl/shaders/symbol_icon.cpp b/src/mbgl/shaders/symbol_icon.cpp index bc570cf361..f5c2bbe22d 100644 --- a/src/mbgl/shaders/symbol_icon.cpp +++ b/src/mbgl/shaders/symbol_icon.cpp @@ -7,17 +7,22 @@ namespace shaders { const char* symbol_icon::name = "symbol_icon"; const char* symbol_icon::vertexSource = R"MBGL_SHADER( +const float PI = 3.141592653589793; attribute vec4 a_pos_offset; attribute vec4 a_data; +attribute vec3 a_projected_pos; +attribute float a_fade_opacity; -// icon-size data (see symbol_sdf.vertex.glsl for more) -attribute vec3 a_size; uniform bool u_is_size_zoom_constant; uniform bool u_is_size_feature_constant; -uniform mediump float u_size_t; // used to interpolate between zoom stops when size is a composite function -uniform mediump float u_size; // used when size is both zoom and feature constant -uniform mediump float u_layout_size; // used when size is feature constant +uniform highp float u_size_t; // used to interpolate between zoom stops when size is a composite function +uniform highp float u_size; // used when size is both zoom and feature constant +uniform highp float u_camera_to_center_distance; +uniform highp float u_pitch; +uniform bool u_rotate_symbol; +uniform highp float u_aspect_ratio; +uniform float u_fade_change; #ifndef HAS_UNIFORM_u_opacity @@ -28,84 +33,86 @@ varying lowp float opacity; uniform lowp float u_opacity; #endif -// matrix is for the vertex position. + uniform mat4 u_matrix; +uniform mat4 u_label_plane_matrix; +uniform mat4 u_gl_coord_matrix; uniform bool u_is_text; -uniform mediump float u_zoom; -uniform bool u_rotate_with_map; -uniform vec2 u_extrude_scale; +uniform bool u_pitch_with_map; uniform vec2 u_texsize; varying vec2 v_tex; -varying vec2 v_fade_tex; +varying float v_fade_opacity; void main() { - + #ifndef HAS_UNIFORM_u_opacity opacity = unpack_mix_vec2(a_opacity, a_opacity_t); #else lowp float opacity = u_opacity; #endif + vec2 a_pos = a_pos_offset.xy; vec2 a_offset = a_pos_offset.zw; vec2 a_tex = a_data.xy; - mediump vec2 label_data = unpack_float(a_data[2]); - mediump float a_labelminzoom = label_data[0]; - mediump vec2 a_zoom = unpack_float(a_data[3]); - mediump float a_minzoom = a_zoom[0]; - mediump float a_maxzoom = a_zoom[1]; + vec2 a_size = a_data.zw; + + highp float segment_angle = -a_projected_pos[2]; float size; - // In order to accommodate placing labels around corners in - // symbol-placement: line, each glyph in a label could have multiple - // "quad"s only one of which should be shown at a given zoom level. - // The min/max zoom assigned to each quad is based on the font size at - // the vector tile's zoom level, which might be different than at the - // currently rendered zoom level if text-size is zoom-dependent. - // Thus, we compensate for this difference by calculating an adjustment - // based on the scale of rendered text size relative to layout text size. - mediump float layoutSize; if (!u_is_size_zoom_constant && !u_is_size_feature_constant) { size = mix(a_size[0], a_size[1], u_size_t) / 10.0; - layoutSize = a_size[2] / 10.0; } else if (u_is_size_zoom_constant && !u_is_size_feature_constant) { size = a_size[0] / 10.0; - layoutSize = size; } else if (!u_is_size_zoom_constant && u_is_size_feature_constant) { size = u_size; - layoutSize = u_layout_size; } else { size = u_size; - layoutSize = u_size; } + vec4 projectedPoint = u_matrix * vec4(a_pos, 0, 1); + highp float camera_to_anchor_distance = projectedPoint.w; + // See comments in symbol_sdf.vertex + highp float distance_ratio = u_pitch_with_map ? + camera_to_anchor_distance / u_camera_to_center_distance : + u_camera_to_center_distance / camera_to_anchor_distance; + highp float perspective_ratio = 0.5 + 0.5 * distance_ratio; + + size *= perspective_ratio; + float fontScale = u_is_text ? size / 24.0 : size; - mediump float zoomAdjust = log2(size / layoutSize); - mediump float adjustedZoom = (u_zoom - zoomAdjust) * 10.0; - // result: z = 0 if a_minzoom <= adjustedZoom < a_maxzoom, and 1 otherwise - mediump float z = 2.0 - step(a_minzoom, adjustedZoom) - (1.0 - step(a_maxzoom, adjustedZoom)); + highp float symbol_rotation = 0.0; + if (u_rotate_symbol) { + // See comments in symbol_sdf.vertex + vec4 offsetProjectedPoint = u_matrix * vec4(a_pos + vec2(1, 0), 0, 1); - vec2 extrude = fontScale * u_extrude_scale * (a_offset / 64.0); - if (u_rotate_with_map) { - gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1); - gl_Position.z += z * gl_Position.w; - } else { - gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0); + vec2 a = projectedPoint.xy / projectedPoint.w; + vec2 b = offsetProjectedPoint.xy / offsetProjectedPoint.w; + + symbol_rotation = atan((b.y - a.y) / u_aspect_ratio, b.x - a.x); } + highp float angle_sin = sin(segment_angle + symbol_rotation); + highp float angle_cos = cos(segment_angle + symbol_rotation); + mat2 rotation_matrix = mat2(angle_cos, -1.0 * angle_sin, angle_sin, angle_cos); + + vec4 projected_pos = u_label_plane_matrix * vec4(a_projected_pos.xy, 0.0, 1.0); + gl_Position = u_gl_coord_matrix * vec4(projected_pos.xy / projected_pos.w + rotation_matrix * (a_offset / 64.0 * fontScale), 0.0, 1.0); + v_tex = a_tex / u_texsize; - v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0); + vec2 fade_opacity = unpack_opacity(a_fade_opacity); + float fade_change = fade_opacity[1] > 0.5 ? u_fade_change : -u_fade_change; + v_fade_opacity = max(0.0, min(1.0, fade_opacity[0] + fade_change)); } )MBGL_SHADER"; const char* symbol_icon::fragmentSource = R"MBGL_SHADER( uniform sampler2D u_texture; -uniform sampler2D u_fadetexture; #ifndef HAS_UNIFORM_u_opacity @@ -114,16 +121,18 @@ varying lowp float opacity; uniform lowp float u_opacity; #endif + varying vec2 v_tex; -varying vec2 v_fade_tex; +varying float v_fade_opacity; void main() { - + #ifdef HAS_UNIFORM_u_opacity lowp float opacity = u_opacity; #endif - lowp float alpha = texture2D(u_fadetexture, v_fade_tex).a * opacity; + + lowp float alpha = opacity * v_fade_opacity; gl_FragColor = texture2D(u_texture, v_tex) * alpha; #ifdef OVERDRAW_INSPECTOR diff --git a/src/mbgl/shaders/symbol_sdf.cpp b/src/mbgl/shaders/symbol_sdf.cpp index cce6b769a6..441eaf7aac 100644 --- a/src/mbgl/shaders/symbol_sdf.cpp +++ b/src/mbgl/shaders/symbol_sdf.cpp @@ -11,6 +11,8 @@ const float PI = 3.141592653589793; attribute vec4 a_pos_offset; attribute vec4 a_data; +attribute vec3 a_projected_pos; +attribute float a_fade_opacity; // contents of a_size vary based on the type of property value // used for {text,icon}-size. @@ -18,14 +20,11 @@ attribute vec4 a_data; // For source functions, we bind only one value per vertex: the value of {text,icon}-size evaluated for the current feature. // For composite functions: // [ text-size(lowerZoomStop, feature), -// text-size(upperZoomStop, feature), -// layoutSize == text-size(layoutZoomLevel, feature) ] -attribute vec3 a_size; +// text-size(upperZoomStop, feature) ] uniform bool u_is_size_zoom_constant; uniform bool u_is_size_feature_constant; -uniform mediump float u_size_t; // used to interpolate between zoom stops when size is a composite function -uniform mediump float u_size; // used when size is both zoom and feature constant -uniform mediump float u_layout_size; // used when size is feature constant +uniform highp float u_size_t; // used to interpolate between zoom stops when size is a composite function +uniform highp float u_size; // used when size is both zoom and feature constant #ifndef HAS_UNIFORM_u_fill_color @@ -36,6 +35,7 @@ varying highp vec4 fill_color; uniform highp vec4 u_fill_color; #endif + #ifndef HAS_UNIFORM_u_halo_color uniform lowp float a_halo_color_t; attribute highp vec4 a_halo_color; @@ -44,6 +44,7 @@ varying highp vec4 halo_color; uniform highp vec4 u_halo_color; #endif + #ifndef HAS_UNIFORM_u_opacity uniform lowp float a_opacity_t; attribute lowp vec2 a_opacity; @@ -52,6 +53,7 @@ varying lowp float opacity; uniform lowp float u_opacity; #endif + #ifndef HAS_UNIFORM_u_halo_width uniform lowp float a_halo_width_t; attribute lowp vec2 a_halo_width; @@ -60,6 +62,7 @@ varying lowp float halo_width; uniform lowp float u_halo_width; #endif + #ifndef HAS_UNIFORM_u_halo_blur uniform lowp float a_halo_blur_t; attribute lowp vec2 a_halo_blur; @@ -68,150 +71,125 @@ varying lowp float halo_blur; uniform lowp float u_halo_blur; #endif -// matrix is for the vertex position. + uniform mat4 u_matrix; +uniform mat4 u_label_plane_matrix; +uniform mat4 u_gl_coord_matrix; uniform bool u_is_text; -uniform mediump float u_zoom; -uniform bool u_rotate_with_map; uniform bool u_pitch_with_map; -uniform mediump float u_pitch; -uniform mediump float u_bearing; -uniform mediump float u_aspect_ratio; -uniform vec2 u_extrude_scale; +uniform highp float u_pitch; +uniform bool u_rotate_symbol; +uniform highp float u_aspect_ratio; +uniform highp float u_camera_to_center_distance; +uniform float u_fade_change; uniform vec2 u_texsize; -varying vec4 v_data0; -varying vec2 v_data1; +varying vec2 v_data0; +varying vec3 v_data1; void main() { - + #ifndef HAS_UNIFORM_u_fill_color fill_color = unpack_mix_vec4(a_fill_color, a_fill_color_t); #else highp vec4 fill_color = u_fill_color; #endif + #ifndef HAS_UNIFORM_u_halo_color halo_color = unpack_mix_vec4(a_halo_color, a_halo_color_t); #else highp vec4 halo_color = u_halo_color; #endif + #ifndef HAS_UNIFORM_u_opacity opacity = unpack_mix_vec2(a_opacity, a_opacity_t); #else lowp float opacity = u_opacity; #endif + #ifndef HAS_UNIFORM_u_halo_width halo_width = unpack_mix_vec2(a_halo_width, a_halo_width_t); #else lowp float halo_width = u_halo_width; #endif + #ifndef HAS_UNIFORM_u_halo_blur halo_blur = unpack_mix_vec2(a_halo_blur, a_halo_blur_t); #else lowp float halo_blur = u_halo_blur; #endif + vec2 a_pos = a_pos_offset.xy; vec2 a_offset = a_pos_offset.zw; vec2 a_tex = a_data.xy; + vec2 a_size = a_data.zw; - mediump vec2 label_data = unpack_float(a_data[2]); - mediump float a_labelminzoom = label_data[0]; - mediump float a_labelangle = label_data[1]; - - mediump vec2 a_zoom = unpack_float(a_data[3]); - mediump float a_minzoom = a_zoom[0]; - mediump float a_maxzoom = a_zoom[1]; + highp float segment_angle = -a_projected_pos[2]; float size; - // In order to accommodate placing labels around corners in - // symbol-placement: line, each glyph in a label could have multiple - // "quad"s only one of which should be shown at a given zoom level. - // The min/max zoom assigned to each quad is based on the font size at - // the vector tile's zoom level, which might be different than at the - // currently rendered zoom level if text-size is zoom-dependent. - // Thus, we compensate for this difference by calculating an adjustment - // based on the scale of rendered text size relative to layout text size. - mediump float layoutSize; if (!u_is_size_zoom_constant && !u_is_size_feature_constant) { size = mix(a_size[0], a_size[1], u_size_t) / 10.0; - layoutSize = a_size[2] / 10.0; } else if (u_is_size_zoom_constant && !u_is_size_feature_constant) { size = a_size[0] / 10.0; - layoutSize = size; } else if (!u_is_size_zoom_constant && u_is_size_feature_constant) { size = u_size; - layoutSize = u_layout_size; } else { size = u_size; - layoutSize = u_size; } + vec4 projectedPoint = u_matrix * vec4(a_pos, 0, 1); + highp float camera_to_anchor_distance = projectedPoint.w; + // If the label is pitched with the map, layout is done in pitched space, + // which makes labels in the distance smaller relative to viewport space. + // We counteract part of that effect by multiplying by the perspective ratio. + // If the label isn't pitched with the map, we do layout in viewport space, + // which makes labels in the distance larger relative to the features around + // them. We counteract part of that effect by dividing by the perspective ratio. + highp float distance_ratio = u_pitch_with_map ? + camera_to_anchor_distance / u_camera_to_center_distance : + u_camera_to_center_distance / camera_to_anchor_distance; + highp float perspective_ratio = 0.5 + 0.5 * distance_ratio; + + size *= perspective_ratio; + float fontScale = u_is_text ? size / 24.0 : size; - mediump float zoomAdjust = log2(size / layoutSize); - mediump float adjustedZoom = (u_zoom - zoomAdjust) * 10.0; - // result: z = 0 if a_minzoom <= adjustedZoom < a_maxzoom, and 1 otherwise - // Used below to move the vertex out of the clip space for when the current - // zoom is out of the glyph's zoom range. - mediump float z = 2.0 - step(a_minzoom, adjustedZoom) - (1.0 - step(a_maxzoom, adjustedZoom)); - - // pitch-alignment: map - // rotation-alignment: map | viewport - if (u_pitch_with_map) { - lowp float angle = u_rotate_with_map ? (a_labelangle / 256.0 * 2.0 * PI) : u_bearing; - lowp float asin = sin(angle); - lowp float acos = cos(angle); - mat2 RotationMatrix = mat2(acos, asin, -1.0 * asin, acos); - vec2 offset = RotationMatrix * a_offset; - vec2 extrude = fontScale * u_extrude_scale * (offset / 64.0); - gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1); - gl_Position.z += z * gl_Position.w; - // pitch-alignment: viewport - // rotation-alignment: map - } else if (u_rotate_with_map) { - // foreshortening factor to apply on pitched maps - // as a label goes from horizontal <=> vertical in angle - // it goes from 0% foreshortening to up to around 70% foreshortening - lowp float pitchfactor = 1.0 - cos(u_pitch * sin(u_pitch * 0.75)); - - lowp float lineangle = a_labelangle / 256.0 * 2.0 * PI; - - // use the lineangle to position points a,b along the line - // project the points and calculate the label angle in projected space - // this calculation allows labels to be rendered unskewed on pitched maps - vec4 a = u_matrix * vec4(a_pos, 0, 1); - vec4 b = u_matrix * vec4(a_pos + vec2(cos(lineangle),sin(lineangle)), 0, 1); - lowp float angle = atan((b[1]/b[3] - a[1]/a[3])/u_aspect_ratio, b[0]/b[3] - a[0]/a[3]); - lowp float asin = sin(angle); - lowp float acos = cos(angle); - mat2 RotationMatrix = mat2(acos, -1.0 * asin, asin, acos); - - vec2 offset = RotationMatrix * (vec2((1.0-pitchfactor)+(pitchfactor*cos(angle*2.0)), 1.0) * a_offset); - vec2 extrude = fontScale * u_extrude_scale * (offset / 64.0); - gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0); - gl_Position.z += z * gl_Position.w; - // pitch-alignment: viewport - // rotation-alignment: viewport - } else { - vec2 extrude = fontScale * u_extrude_scale * (a_offset / 64.0); - gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0); + highp float symbol_rotation = 0.0; + if (u_rotate_symbol) { + // Point labels with 'rotation-alignment: map' are horizontal with respect to tile units + // To figure out that angle in projected space, we draw a short horizontal line in tile + // space, project it, and measure its angle in projected space. + vec4 offsetProjectedPoint = u_matrix * vec4(a_pos + vec2(1, 0), 0, 1); + + vec2 a = projectedPoint.xy / projectedPoint.w; + vec2 b = offsetProjectedPoint.xy / offsetProjectedPoint.w; + + symbol_rotation = atan((b.y - a.y) / u_aspect_ratio, b.x - a.x); } + highp float angle_sin = sin(segment_angle + symbol_rotation); + highp float angle_cos = cos(segment_angle + symbol_rotation); + mat2 rotation_matrix = mat2(angle_cos, -1.0 * angle_sin, angle_sin, angle_cos); + + vec4 projected_pos = u_label_plane_matrix * vec4(a_projected_pos.xy, 0.0, 1.0); + gl_Position = u_gl_coord_matrix * vec4(projected_pos.xy / projected_pos.w + rotation_matrix * (a_offset / 64.0 * fontScale), 0.0, 1.0); float gamma_scale = gl_Position.w; vec2 tex = a_tex / u_texsize; - vec2 fade_tex = vec2(a_labelminzoom / 255.0, 0.0); + vec2 fade_opacity = unpack_opacity(a_fade_opacity); + float fade_change = fade_opacity[1] > 0.5 ? u_fade_change : -u_fade_change; + float interpolated_fade_opacity = max(0.0, min(1.0, fade_opacity[0] + fade_change)); - v_data0 = vec4(tex.x, tex.y, fade_tex.x, fade_tex.y); - v_data1 = vec2(gamma_scale, size); + v_data0 = vec2(tex.x, tex.y); + v_data1 = vec3(gamma_scale, size, interpolated_fade_opacity); } )MBGL_SHADER"; @@ -227,64 +205,73 @@ varying highp vec4 fill_color; uniform highp vec4 u_fill_color; #endif + #ifndef HAS_UNIFORM_u_halo_color varying highp vec4 halo_color; #else uniform highp vec4 u_halo_color; #endif + #ifndef HAS_UNIFORM_u_opacity varying lowp float opacity; #else uniform lowp float u_opacity; #endif + #ifndef HAS_UNIFORM_u_halo_width varying lowp float halo_width; #else uniform lowp float u_halo_width; #endif + #ifndef HAS_UNIFORM_u_halo_blur varying lowp float halo_blur; #else uniform lowp float u_halo_blur; #endif + uniform sampler2D u_texture; -uniform sampler2D u_fadetexture; uniform highp float u_gamma_scale; uniform bool u_is_text; -varying vec4 v_data0; -varying vec2 v_data1; +varying vec2 v_data0; +varying vec3 v_data1; void main() { - + #ifdef HAS_UNIFORM_u_fill_color highp vec4 fill_color = u_fill_color; #endif + #ifdef HAS_UNIFORM_u_halo_color highp vec4 halo_color = u_halo_color; #endif + #ifdef HAS_UNIFORM_u_opacity lowp float opacity = u_opacity; #endif + #ifdef HAS_UNIFORM_u_halo_width lowp float halo_width = u_halo_width; #endif + #ifdef HAS_UNIFORM_u_halo_blur lowp float halo_blur = u_halo_blur; #endif + vec2 tex = v_data0.xy; - vec2 fade_tex = v_data0.zw; float gamma_scale = v_data1.x; float size = v_data1.y; + float fade_opacity = v_data1[2]; float fontScale = u_is_text ? size / 24.0 : size; @@ -298,11 +285,10 @@ void main() { } lowp float dist = texture2D(u_texture, tex).a; - lowp float fade_alpha = texture2D(u_fadetexture, fade_tex).a; highp float gamma_scaled = gamma * gamma_scale; - highp float alpha = smoothstep(buff - gamma_scaled, buff + gamma_scaled, dist) * fade_alpha; + highp float alpha = smoothstep(buff - gamma_scaled, buff + gamma_scaled, dist); - gl_FragColor = color * (alpha * opacity); + gl_FragColor = color * (alpha * opacity * fade_opacity); #ifdef OVERDRAW_INSPECTOR gl_FragColor = vec4(1.0); |