diff options
Diffstat (limited to 'src/mbgl/shaders')
25 files changed, 780 insertions, 125 deletions
diff --git a/src/mbgl/shaders/background.cpp b/src/mbgl/shaders/background.cpp new file mode 100644 index 0000000000..3eafa47b49 --- /dev/null +++ b/src/mbgl/shaders/background.cpp @@ -0,0 +1,34 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#include <mbgl/shaders/background.hpp> + +namespace mbgl { +namespace shaders { + +const char* background::name = "background"; +const char* background::vertexSource = R"MBGL_SHADER( +attribute vec2 a_pos; + +uniform mat4 u_matrix; + +void main() { + gl_Position = u_matrix * vec4(a_pos, 0, 1); +} + +)MBGL_SHADER"; +const char* background::fragmentSource = R"MBGL_SHADER( +uniform vec4 u_color; +uniform float u_opacity; + +void main() { + gl_FragColor = u_color * u_opacity; + +#ifdef OVERDRAW_INSPECTOR + gl_FragColor = vec4(1.0); +#endif +} + +)MBGL_SHADER"; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/background.hpp b/src/mbgl/shaders/background.hpp new file mode 100644 index 0000000000..2fa6f56e29 --- /dev/null +++ b/src/mbgl/shaders/background.hpp @@ -0,0 +1,16 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#pragma once + +namespace mbgl { +namespace shaders { + +class background { +public: + static const char* name; + static const char* vertexSource; + static const char* fragmentSource; +}; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/background_pattern.cpp b/src/mbgl/shaders/background_pattern.cpp new file mode 100644 index 0000000000..6fd0a53d19 --- /dev/null +++ b/src/mbgl/shaders/background_pattern.cpp @@ -0,0 +1,65 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#include <mbgl/shaders/background_pattern.hpp> + +namespace mbgl { +namespace shaders { + +const char* background_pattern::name = "background_pattern"; +const char* background_pattern::vertexSource = R"MBGL_SHADER( +uniform mat4 u_matrix; +uniform vec2 u_pattern_size_a; +uniform vec2 u_pattern_size_b; +uniform vec2 u_pixel_coord_upper; +uniform vec2 u_pixel_coord_lower; +uniform float u_scale_a; +uniform float u_scale_b; +uniform float u_tile_units_to_pixels; + +attribute vec2 a_pos; + +varying vec2 v_pos_a; +varying vec2 v_pos_b; + +void main() { + 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); + 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, a_pos); +} + +)MBGL_SHADER"; +const char* background_pattern::fragmentSource = R"MBGL_SHADER( +uniform vec2 u_pattern_tl_a; +uniform vec2 u_pattern_br_a; +uniform vec2 u_pattern_tl_b; +uniform vec2 u_pattern_br_b; +uniform vec2 u_texsize; +uniform float u_mix; +uniform float u_opacity; + +uniform sampler2D u_image; + +varying vec2 v_pos_a; +varying vec2 v_pos_b; + +void main() { + 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); + + vec2 imagecoord_b = mod(v_pos_b, 1.0); + vec2 pos2 = mix(u_pattern_tl_b / u_texsize, u_pattern_br_b / u_texsize, imagecoord_b); + vec4 color2 = texture2D(u_image, pos2); + + gl_FragColor = mix(color1, color2, u_mix) * u_opacity; + +#ifdef OVERDRAW_INSPECTOR + gl_FragColor = vec4(1.0); +#endif +} + +)MBGL_SHADER"; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/background_pattern.hpp b/src/mbgl/shaders/background_pattern.hpp new file mode 100644 index 0000000000..e970ffd670 --- /dev/null +++ b/src/mbgl/shaders/background_pattern.hpp @@ -0,0 +1,16 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#pragma once + +namespace mbgl { +namespace shaders { + +class background_pattern { +public: + static const char* name; + static const char* vertexSource; + static const char* fragmentSource; +}; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/clipping_mask.cpp b/src/mbgl/shaders/clipping_mask.cpp new file mode 100644 index 0000000000..fb08d7cb00 --- /dev/null +++ b/src/mbgl/shaders/clipping_mask.cpp @@ -0,0 +1,27 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#include <mbgl/shaders/clipping_mask.hpp> + +namespace mbgl { +namespace shaders { + +const char* clipping_mask::name = "clipping_mask"; +const char* clipping_mask::vertexSource = R"MBGL_SHADER( +attribute vec2 a_pos; + +uniform mat4 u_matrix; + +void main() { + gl_Position = u_matrix * vec4(a_pos, 0, 1); +} + +)MBGL_SHADER"; +const char* clipping_mask::fragmentSource = R"MBGL_SHADER( +void main() { + gl_FragColor = vec4(1.0); +} + +)MBGL_SHADER"; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/clipping_mask.hpp b/src/mbgl/shaders/clipping_mask.hpp new file mode 100644 index 0000000000..bd01ab62fa --- /dev/null +++ b/src/mbgl/shaders/clipping_mask.hpp @@ -0,0 +1,16 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#pragma once + +namespace mbgl { +namespace shaders { + +class clipping_mask { +public: + static const char* name; + static const char* vertexSource; + static const char* fragmentSource; +}; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/collision_box.cpp b/src/mbgl/shaders/collision_box.cpp index 07fa94e338..bc5d9bc6f9 100644 --- a/src/mbgl/shaders/collision_box.cpp +++ b/src/mbgl/shaders/collision_box.cpp @@ -10,77 +10,53 @@ 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 float u_pitch; -uniform float u_collision_y_stretch; +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_perspective_zoom_adjust; -varying vec2 v_fade_tex; +varying float v_placed; +varying float v_notUsed; 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 = 1.0 + 0.5 * ((camera_to_anchor_distance / u_camera_to_center_distance) - 1.0); + highp float collision_perspective_ratio = clamp( + 0.5 + 0.5 * (u_camera_to_center_distance / camera_to_anchor_distance), + 0.0, // Prevents oversized near-field boxes in pitched/overzoomed tiles + 4.0); - highp float incidence_stretch = camera_to_anchor_distance / (u_camera_to_center_distance * cos(u_pitch)); - highp float collision_adjustment = max(1.0, incidence_stretch / u_collision_y_stretch); + 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; - gl_Position = u_matrix * vec4(a_pos + a_extrude * collision_perspective_ratio * collision_adjustment / u_scale, 0.0, 1.0); - - v_max_zoom = a_data.x; - v_placement_zoom = a_data.y; - - v_perspective_zoom_adjust = floor(log2(collision_perspective_ratio * collision_adjustment) * 10.0); - v_fade_tex = vec2((v_placement_zoom + v_perspective_zoom_adjust) / 255.0, 0.0); + v_placed = a_placed.x; + v_notUsed = a_placed.y; } )MBGL_SHADER"; const char* collision_box::fragmentSource = R"MBGL_SHADER( -uniform float u_zoom; -// u_maxzoom is derived from the maximum scale considered by the CollisionTile -// Labels with placement zoom greater than this value will not be placed, -// regardless of perspective effects. -uniform float u_maxzoom; -uniform sampler2D u_fadetexture; - -// v_max_zoom is a collision-box-specific value that controls when line-following -// collision boxes are used. -varying float v_max_zoom; -varying float v_placement_zoom; -varying float v_perspective_zoom_adjust; -varying vec2 v_fade_tex; + +varying float v_placed; +varying float v_notUsed; void main() { float alpha = 0.5; - // Green = no collisions, label is showing - gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0) * alpha; + // Red = collision, hide label + gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0) * alpha; - // Red = collision, label hidden - if (texture2D(u_fadetexture, v_fade_tex).a < 1.0) { - gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0) * alpha; + // Blue = no collision, label is showing + if (v_placed > 0.5) { + gl_FragColor = vec4(0.0, 0.0, 1.0, 0.5) * alpha; } - // Faded black = this collision box is not used at this zoom (for curved labels) - if (u_zoom >= v_max_zoom + v_perspective_zoom_adjust) { - gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0) * alpha * 0.25; - } - - // Faded blue = the placement scale for this label is beyond the CollisionTile - // max scale, so it's impossible for this label to show without collision detection - // being run again (the label's glyphs haven't even been added to the symbol bucket) - 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..82ebbf05a0 --- /dev/null +++ b/src/mbgl/shaders/collision_circle.cpp @@ -0,0 +1,87 @@ +// 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 = clamp( + 0.5 + 0.5 * (u_camera_to_center_distance / camera_to_anchor_distance), + 0.0, // Prevents oversized near-field circles in pitched/overzoomed tiles + 4.0); + + 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( +uniform float u_overscale_factor; + +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 = 15.0 * extrude_scale_length / u_overscale_factor; + 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 d18f3be5d1..9012cfa755 100644 --- a/src/mbgl/shaders/debug.cpp +++ b/src/mbgl/shaders/debug.cpp @@ -12,12 +12,7 @@ attribute vec2 a_pos; uniform mat4 u_matrix; void main() { - // 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. - gl_Position = u_matrix * vec4(a_pos, step(8192.0, a_pos.x), 1); + gl_Position = u_matrix * vec4(a_pos, 0, 1); } )MBGL_SHADER"; diff --git a/src/mbgl/shaders/fill_extrusion.cpp b/src/mbgl/shaders/fill_extrusion.cpp index 817f73391c..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; @@ -70,11 +69,12 @@ void main() { #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); @@ -88,7 +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 @@ -97,7 +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); } diff --git a/src/mbgl/shaders/fill_extrusion_pattern.cpp b/src/mbgl/shaders/fill_extrusion_pattern.cpp index d3e5eef1bf..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; @@ -65,26 +64,29 @@ void main() { #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); } diff --git a/src/mbgl/shaders/heatmap.cpp b/src/mbgl/shaders/heatmap.cpp new file mode 100644 index 0000000000..19927cfcc6 --- /dev/null +++ b/src/mbgl/shaders/heatmap.cpp @@ -0,0 +1,128 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#include <mbgl/shaders/heatmap.hpp> + +namespace mbgl { +namespace shaders { + +const char* heatmap::name = "heatmap"; +const char* heatmap::vertexSource = R"MBGL_SHADER( + +#ifndef HAS_UNIFORM_u_weight +uniform lowp float a_weight_t; +attribute highp vec2 a_weight; +varying highp float weight; +#else +uniform highp float u_weight; +#endif + + +#ifndef HAS_UNIFORM_u_radius +uniform lowp float a_radius_t; +attribute mediump vec2 a_radius; +#else +uniform mediump float u_radius; +#endif + + +uniform mat4 u_matrix; +uniform float u_extrude_scale; +uniform float u_opacity; +uniform float u_intensity; + +attribute vec2 a_pos; + +varying vec2 v_extrude; + +// Effective "0" in the kernel density texture to adjust the kernel size to; +// this empirically chosen number minimizes artifacts on overlapping kernels +// for typical heatmap cases (assuming clustered source) +const highp float ZERO = 1.0 / 255.0 / 16.0; + +// Gaussian kernel coefficient: 1 / sqrt(2 * PI) +#define GAUSS_COEF 0.3989422804014327 + +void main(void) { + +#ifndef HAS_UNIFORM_u_weight + weight = unpack_mix_vec2(a_weight, a_weight_t); +#else + highp float weight = u_weight; +#endif + + +#ifndef HAS_UNIFORM_u_radius + mediump float radius = unpack_mix_vec2(a_radius, a_radius_t); +#else + mediump float radius = u_radius; +#endif + + + // unencode the extrusion vector that we snuck into the a_pos vector + vec2 unscaled_extrude = vec2(mod(a_pos, 2.0) * 2.0 - 1.0); + + // This 'extrude' comes in ranging from [-1, -1], to [1, 1]. We'll use + // it to produce the vertices of a square mesh framing the point feature + // we're adding to the kernel density texture. We'll also pass it as + // a varying, so that the fragment shader can determine the distance of + // each fragment from the point feature. + // Before we do so, we need to scale it up sufficiently so that the + // kernel falls effectively to zero at the edge of the mesh. + // That is, we want to know S such that + // weight * u_intensity * GAUSS_COEF * exp(-0.5 * 3.0^2 * S^2) == ZERO + // Which solves to: + // S = sqrt(-2.0 * log(ZERO / (weight * u_intensity * GAUSS_COEF))) / 3.0 + float S = sqrt(-2.0 * log(ZERO / weight / u_intensity / GAUSS_COEF)) / 3.0; + + // Pass the varying in units of radius + v_extrude = S * unscaled_extrude; + + // Scale by radius and the zoom-based scale factor to produce actual + // mesh position + vec2 extrude = v_extrude * radius * u_extrude_scale; + + // multiply a_pos by 0.5, since we had it * 2 in order to sneak + // in extrusion data + vec4 pos = vec4(floor(a_pos * 0.5) + extrude, 0, 1); + + gl_Position = u_matrix * pos; +} + +)MBGL_SHADER"; +const char* heatmap::fragmentSource = R"MBGL_SHADER( + +#ifndef HAS_UNIFORM_u_weight +varying highp float weight; +#else +uniform highp float u_weight; +#endif + + +uniform highp float u_intensity; +varying vec2 v_extrude; + +// Gaussian kernel coefficient: 1 / sqrt(2 * PI) +#define GAUSS_COEF 0.3989422804014327 + +void main() { + +#ifdef HAS_UNIFORM_u_weight + highp float weight = u_weight; +#endif + + + // Kernel density estimation with a Gaussian kernel of size 5x5 + float d = -0.5 * 3.0 * 3.0 * dot(v_extrude, v_extrude); + float val = weight * u_intensity * GAUSS_COEF * exp(d); + + gl_FragColor = vec4(val, 1.0, 1.0, 1.0); + +#ifdef OVERDRAW_INSPECTOR + gl_FragColor = vec4(1.0); +#endif +} + +)MBGL_SHADER"; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/heatmap.hpp b/src/mbgl/shaders/heatmap.hpp new file mode 100644 index 0000000000..a3c64db942 --- /dev/null +++ b/src/mbgl/shaders/heatmap.hpp @@ -0,0 +1,16 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#pragma once + +namespace mbgl { +namespace shaders { + +class heatmap { +public: + static const char* name; + static const char* vertexSource; + static const char* fragmentSource; +}; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/heatmap_texture.cpp b/src/mbgl/shaders/heatmap_texture.cpp new file mode 100644 index 0000000000..c5d35c48ae --- /dev/null +++ b/src/mbgl/shaders/heatmap_texture.cpp @@ -0,0 +1,42 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#include <mbgl/shaders/heatmap_texture.hpp> + +namespace mbgl { +namespace shaders { + +const char* heatmap_texture::name = "heatmap_texture"; +const char* heatmap_texture::vertexSource = R"MBGL_SHADER( +uniform mat4 u_matrix; +uniform vec2 u_world; +attribute vec2 a_pos; +varying vec2 v_pos; + +void main() { + gl_Position = u_matrix * vec4(a_pos * u_world, 0, 1); + + v_pos.x = a_pos.x; + v_pos.y = 1.0 - a_pos.y; +} + +)MBGL_SHADER"; +const char* heatmap_texture::fragmentSource = R"MBGL_SHADER( +uniform sampler2D u_image; +uniform sampler2D u_color_ramp; +uniform float u_opacity; +varying vec2 v_pos; + +void main() { + float t = texture2D(u_image, v_pos).r; + vec4 color = texture2D(u_color_ramp, vec2(t, 0.5)); + gl_FragColor = color * u_opacity; + +#ifdef OVERDRAW_INSPECTOR + gl_FragColor = vec4(0.0); +#endif +} + +)MBGL_SHADER"; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/heatmap_texture.hpp b/src/mbgl/shaders/heatmap_texture.hpp new file mode 100644 index 0000000000..c51dc6b178 --- /dev/null +++ b/src/mbgl/shaders/heatmap_texture.hpp @@ -0,0 +1,16 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#pragma once + +namespace mbgl { +namespace shaders { + +class heatmap_texture { +public: + static const char* name; + static const char* vertexSource; + static const char* fragmentSource; +}; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/hillshade.cpp b/src/mbgl/shaders/hillshade.cpp new file mode 100644 index 0000000000..4083faa4b4 --- /dev/null +++ b/src/mbgl/shaders/hillshade.cpp @@ -0,0 +1,80 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#include <mbgl/shaders/hillshade.hpp> + +namespace mbgl { +namespace shaders { + +const char* hillshade::name = "hillshade"; +const char* hillshade::vertexSource = R"MBGL_SHADER( +uniform mat4 u_matrix; + +attribute vec2 a_pos; +attribute vec2 a_texture_pos; + +varying vec2 v_pos; + +void main() { + gl_Position = u_matrix * vec4(a_pos, 0, 1); + v_pos = a_texture_pos / 8192.0; +} + +)MBGL_SHADER"; +const char* hillshade::fragmentSource = R"MBGL_SHADER( +uniform sampler2D u_image; +varying vec2 v_pos; + +uniform vec2 u_latrange; +uniform vec2 u_light; +uniform vec4 u_shadow; +uniform vec4 u_highlight; +uniform vec4 u_accent; + +#define PI 3.141592653589793 + +void main() { + vec4 pixel = texture2D(u_image, v_pos); + + vec2 deriv = ((pixel.rg * 2.0) - 1.0); + + // We divide the slope by a scale factor based on the cosin of the pixel's approximate latitude + // to account for mercator projection distortion. see #4807 for details + float scaleFactor = cos(radians((u_latrange[0] - u_latrange[1]) * (1.0 - v_pos.y) + u_latrange[1])); + // We also multiply the slope by an arbitrary z-factor of 1.25 + float slope = atan(1.25 * length(deriv) / scaleFactor); + float aspect = deriv.x != 0.0 ? atan(deriv.y, -deriv.x) : PI / 2.0 * (deriv.y > 0.0 ? 1.0 : -1.0); + + float intensity = u_light.x; + // We add PI to make this property match the global light object, which adds PI/2 to the light's azimuthal + // position property to account for 0deg corresponding to north/the top of the viewport in the style spec + // and the original shader was written to accept (-illuminationDirection - 90) as the azimuthal. + float azimuth = u_light.y + PI; + + // We scale the slope exponentially based on intensity, using a calculation similar to + // the exponential interpolation function in the style spec: + // https://github.com/mapbox/mapbox-gl-js/blob/master/src/style-spec/expression/definitions/interpolate.js#L217-L228 + // so that higher intensity values create more opaque hillshading. + float base = 1.875 - intensity * 1.75; + float maxValue = 0.5 * PI; + float scaledSlope = intensity != 0.5 ? ((pow(base, slope) - 1.0) / (pow(base, maxValue) - 1.0)) * maxValue : slope; + + // The accent color is calculated with the cosine of the slope while the shade color is calculated with the sine + // so that the accent color's rate of change eases in while the shade color's eases out. + float accent = cos(scaledSlope); + // We multiply both the accent and shade color by a clamped intensity value + // so that intensities >= 0.5 do not additionally affect the color values + // while intensity values < 0.5 make the overall color more transparent. + vec4 accent_color = (1.0 - accent) * u_accent * clamp(intensity * 2.0, 0.0, 1.0); + float shade = abs(mod((aspect + azimuth) / PI + 0.5, 2.0) - 1.0); + vec4 shade_color = mix(u_shadow, u_highlight, shade) * sin(scaledSlope) * clamp(intensity * 2.0, 0.0, 1.0); + gl_FragColor = accent_color * (1.0 - shade_color.a) + shade_color; + +#ifdef OVERDRAW_INSPECTOR + gl_FragColor = vec4(1.0); +#endif +} + +)MBGL_SHADER"; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/hillshade.hpp b/src/mbgl/shaders/hillshade.hpp new file mode 100644 index 0000000000..a4a27cb595 --- /dev/null +++ b/src/mbgl/shaders/hillshade.hpp @@ -0,0 +1,16 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#pragma once + +namespace mbgl { +namespace shaders { + +class hillshade { +public: + static const char* name; + static const char* vertexSource; + static const char* fragmentSource; +}; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/hillshade_prepare.cpp b/src/mbgl/shaders/hillshade_prepare.cpp new file mode 100644 index 0000000000..8d0571f6a4 --- /dev/null +++ b/src/mbgl/shaders/hillshade_prepare.cpp @@ -0,0 +1,100 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#include <mbgl/shaders/hillshade_prepare.hpp> + +namespace mbgl { +namespace shaders { + +const char* hillshade_prepare::name = "hillshade_prepare"; +const char* hillshade_prepare::vertexSource = R"MBGL_SHADER( +uniform mat4 u_matrix; + +attribute vec2 a_pos; +attribute vec2 a_texture_pos; + +varying vec2 v_pos; + +void main() { + gl_Position = u_matrix * vec4(a_pos, 0, 1); + v_pos = (a_texture_pos / 8192.0) / 2.0 + 0.25; +} + +)MBGL_SHADER"; +const char* hillshade_prepare::fragmentSource = R"MBGL_SHADER( +#ifdef GL_ES +precision highp float; +#endif + +uniform sampler2D u_image; +varying vec2 v_pos; +uniform vec2 u_dimension; +uniform float u_zoom; +uniform float u_maxzoom; + +float getElevation(vec2 coord, float bias) { + // Convert encoded elevation value to meters + vec4 data = texture2D(u_image, coord) * 255.0; + return (data.r + data.g * 256.0 + data.b * 256.0 * 256.0) / 4.0; +} + +void main() { + vec2 epsilon = 1.0 / u_dimension; + + // queried pixels: + // +-----------+ + // | | | | + // | a | b | c | + // | | | | + // +-----------+ + // | | | | + // | d | e | f | + // | | | | + // +-----------+ + // | | | | + // | g | h | i | + // | | | | + // +-----------+ + + float a = getElevation(v_pos + vec2(-epsilon.x, -epsilon.y), 0.0); + float b = getElevation(v_pos + vec2(0, -epsilon.y), 0.0); + float c = getElevation(v_pos + vec2(epsilon.x, -epsilon.y), 0.0); + float d = getElevation(v_pos + vec2(-epsilon.x, 0), 0.0); + float e = getElevation(v_pos, 0.0); + float f = getElevation(v_pos + vec2(epsilon.x, 0), 0.0); + float g = getElevation(v_pos + vec2(-epsilon.x, epsilon.y), 0.0); + float h = getElevation(v_pos + vec2(0, epsilon.y), 0.0); + float i = getElevation(v_pos + vec2(epsilon.x, epsilon.y), 0.0); + + // here we divide the x and y slopes by 8 * pixel size + // where pixel size (aka meters/pixel) is: + // circumference of the world / (pixels per tile * number of tiles) + // which is equivalent to: 8 * 40075016.6855785 / (512 * pow(2, u_zoom)) + // which can be reduced to: pow(2, 19.25619978527 - u_zoom) + // we want to vertically exaggerate the hillshading though, because otherwise + // it is barely noticeable at low zooms. to do this, we multiply this by some + // scale factor pow(2, (u_zoom - u_maxzoom) * a) where a is an arbitrary value + // Here we use a=0.3 which works out to the expression below. see + // nickidlugash's awesome breakdown for more info + // https://github.com/mapbox/mapbox-gl-js/pull/5286#discussion_r148419556 + float exaggeration = u_zoom < 2.0 ? 0.4 : u_zoom < 4.5 ? 0.35 : 0.3; + + vec2 deriv = vec2( + (c + f + f + i) - (a + d + d + g), + (g + h + h + i) - (a + b + b + c) + ) / pow(2.0, (u_zoom - u_maxzoom) * exaggeration + 19.2562 - u_zoom); + + gl_FragColor = clamp(vec4( + deriv.x / 2.0 + 0.5, + deriv.y / 2.0 + 0.5, + 1.0, + 1.0), 0.0, 1.0); + +#ifdef OVERDRAW_INSPECTOR + gl_FragColor = vec4(1.0); +#endif +} + +)MBGL_SHADER"; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/hillshade_prepare.hpp b/src/mbgl/shaders/hillshade_prepare.hpp new file mode 100644 index 0000000000..c38b4a0d19 --- /dev/null +++ b/src/mbgl/shaders/hillshade_prepare.hpp @@ -0,0 +1,16 @@ +// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED. + +#pragma once + +namespace mbgl { +namespace shaders { + +class hillshade_prepare { +public: + static const char* name; + static const char* vertexSource; + static const char* fragmentSource; +}; + +} // namespace shaders +} // namespace mbgl diff --git a/src/mbgl/shaders/line.cpp b/src/mbgl/shaders/line.cpp index c700295a15..68d2dcc468 100644 --- a/src/mbgl/shaders/line.cpp +++ b/src/mbgl/shaders/line.cpp @@ -31,6 +31,7 @@ uniform vec2 u_gl_units_to_pixels; varying vec2 v_normal; varying vec2 v_width2; varying float v_gamma_scale; +varying highp float v_linesofar; #ifndef HAS_UNIFORM_u_color @@ -131,6 +132,8 @@ void main() { vec2 a_extrude = a_data.xy - 128.0; float a_direction = mod(a_data.z, 4.0) - 1.0; + v_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * 2.0; + vec2 pos = a_pos_normal.xy; // x is 1 if it's a round cap, 0 otherwise diff --git a/src/mbgl/shaders/line_pattern.cpp b/src/mbgl/shaders/line_pattern.cpp index f8d785ade9..be88255e3c 100644 --- a/src/mbgl/shaders/line_pattern.cpp +++ b/src/mbgl/shaders/line_pattern.cpp @@ -215,8 +215,14 @@ void main() { float x_a = mod(v_linesofar / u_pattern_size_a.x, 1.0); float x_b = mod(v_linesofar / u_pattern_size_b.x, 1.0); - float y_a = 0.5 + (v_normal.y * v_width2.s / u_pattern_size_a.y); - float y_b = 0.5 + (v_normal.y * v_width2.s / u_pattern_size_b.y); + + // v_normal.y is 0 at the midpoint of the line, -1 at the lower edge, 1 at the upper edge + // we clamp the line width outset to be between 0 and half the pattern height plus padding (2.0) + // to ensure we don't sample outside the designated symbol on the sprite sheet. + // 0.5 is added to shift the component to be bounded between 0 and 1 for interpolation of + // the texture coordinate + float y_a = 0.5 + (v_normal.y * clamp(v_width2.s, 0.0, (u_pattern_size_a.y + 2.0) / 2.0) / u_pattern_size_a.y); + float y_b = 0.5 + (v_normal.y * clamp(v_width2.s, 0.0, (u_pattern_size_b.y + 2.0) / 2.0) / u_pattern_size_b.y); vec2 pos_a = mix(u_pattern_tl_a / u_texsize, u_pattern_br_a / u_texsize, vec2(x_a, y_a)); vec2 pos_b = mix(u_pattern_tl_b / u_texsize, u_pattern_br_b / u_texsize, vec2(x_b, y_b)); diff --git a/src/mbgl/shaders/preludes.cpp b/src/mbgl/shaders/preludes.cpp index feb185a684..6baa488a10 100644 --- a/src/mbgl/shaders/preludes.cpp +++ b/src/mbgl/shaders/preludes.cpp @@ -34,6 +34,10 @@ 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, we encode a 4-component // color into a pair of floats (i.e. a vec2) as follows: diff --git a/src/mbgl/shaders/symbol_icon.cpp b/src/mbgl/shaders/symbol_icon.cpp index 1e96194738..c037c81005 100644 --- a/src/mbgl/shaders/symbol_icon.cpp +++ b/src/mbgl/shaders/symbol_icon.cpp @@ -12,6 +12,7 @@ const float PI = 3.141592653589793; attribute vec4 a_pos_offset; attribute vec4 a_data; attribute vec3 a_projected_pos; +attribute float a_fade_opacity; uniform bool u_is_size_zoom_constant; uniform bool u_is_size_feature_constant; @@ -21,7 +22,7 @@ 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 highp float u_collision_y_stretch; +uniform float u_fade_change; #ifndef HAS_UNIFORM_u_opacity @@ -43,7 +44,7 @@ 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() { @@ -60,9 +61,7 @@ void main() { vec2 a_tex = a_data.xy; vec2 a_size = a_data.zw; - highp vec2 angle_labelminzoom = unpack_float(a_projected_pos[2]); - highp float segment_angle = -angle_labelminzoom[0] / 255.0 * 2.0 * PI; - mediump float a_labelminzoom = angle_labelminzoom[1]; + highp float segment_angle = -a_projected_pos[2]; float size; if (!u_is_size_zoom_constant && !u_is_size_feature_constant) { @@ -81,7 +80,10 @@ void main() { 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; + highp float perspective_ratio = clamp( + 0.5 + 0.5 * distance_ratio, + 0.0, // Prevents oversized near-field symbols in pitched/overzoomed tiles + 4.0); size *= perspective_ratio; @@ -103,22 +105,17 @@ void main() { 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); + gl_Position = u_gl_coord_matrix * vec4(projected_pos.xy / projected_pos.w + rotation_matrix * (a_offset / 32.0 * fontScale), 0.0, 1.0); v_tex = a_tex / u_texsize; - // See comments in symbol_sdf.vertex - highp float incidence_stretch = camera_to_anchor_distance / (u_camera_to_center_distance * cos(u_pitch)); - highp float collision_adjustment = max(1.0, incidence_stretch / u_collision_y_stretch); - - highp float collision_perspective_ratio = 1.0 + 0.5*((camera_to_anchor_distance / u_camera_to_center_distance) - 1.0); - highp float perspective_zoom_adjust = floor(log2(collision_perspective_ratio * collision_adjustment) * 10.0); - v_fade_tex = vec2((a_labelminzoom + perspective_zoom_adjust) / 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 @@ -129,7 +126,7 @@ uniform lowp float u_opacity; varying vec2 v_tex; -varying vec2 v_fade_tex; +varying float v_fade_opacity; void main() { @@ -138,7 +135,7 @@ void main() { #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 a4427f31ab..b584c00315 100644 --- a/src/mbgl/shaders/symbol_sdf.cpp +++ b/src/mbgl/shaders/symbol_sdf.cpp @@ -12,6 +12,7 @@ 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. @@ -81,12 +82,12 @@ 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 highp float u_collision_y_stretch; +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() { @@ -131,9 +132,7 @@ void main() { vec2 a_tex = a_data.xy; vec2 a_size = a_data.zw; - highp vec2 angle_labelminzoom = unpack_float(a_projected_pos[2]); - highp float segment_angle = -angle_labelminzoom[0] / 255.0 * 2.0 * PI; - mediump float a_labelminzoom = angle_labelminzoom[1]; + highp float segment_angle = -a_projected_pos[2]; float size; if (!u_is_size_zoom_constant && !u_is_size_feature_constant) { @@ -157,7 +156,10 @@ void main() { 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; + highp float perspective_ratio = clamp( + 0.5 + 0.5 * distance_ratio, + 0.0, // Prevents oversized near-field symbols in pitched/overzoomed tiles + 4.0); size *= perspective_ratio; @@ -181,35 +183,16 @@ void main() { 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); + gl_Position = u_gl_coord_matrix * vec4(projected_pos.xy / projected_pos.w + rotation_matrix * (a_offset / 32.0 * fontScale), 0.0, 1.0); float gamma_scale = gl_Position.w; vec2 tex = a_tex / u_texsize; - // incidence_stretch is the ratio of how much y space a label takes up on a tile while drawn perpendicular to the viewport vs - // how much space it would take up if it were drawn flat on the tile - // Using law of sines, camera_to_anchor/sin(ground_angle) = camera_to_center/sin(incidence_angle) - // sin(incidence_angle) = 1/incidence_stretch - // Incidence angle 90 -> head on, sin(incidence_angle) = 1, no incidence stretch - // Incidence angle 1 -> very oblique, sin(incidence_angle) =~ 0, lots of incidence stretch - // ground_angle = u_pitch + PI/2 -> sin(ground_angle) = cos(u_pitch) - // This 2D calculation is only exactly correct when gl_Position.x is in the center of the viewport, - // but it's a close enough approximation for our purposes - highp float incidence_stretch = camera_to_anchor_distance / (u_camera_to_center_distance * cos(u_pitch)); - // incidence_stretch only applies to the y-axis, but without re-calculating the collision tile, we can't - // adjust the size of only one axis. So, we do a crude approximation at placement time to get the aspect ratio - // about right, and then do the rest of the adjustment here: there will be some extra padding on the x-axis, - // but hopefully not too much. - // Never make the adjustment less than 1.0: instead of allowing collisions on the x-axis, be conservative on - // the y-axis. - highp float collision_adjustment = max(1.0, incidence_stretch / u_collision_y_stretch); - - // Floor to 1/10th zoom to dodge precision issues that can cause partially hidden labels - highp float collision_perspective_ratio = 1.0 + 0.5*((camera_to_anchor_distance / u_camera_to_center_distance) - 1.0); - highp float perspective_zoom_adjust = floor(log2(collision_perspective_ratio * collision_adjustment) * 10.0); - vec2 fade_tex = vec2((a_labelminzoom + perspective_zoom_adjust) / 255.0, 0.0); - - v_data0 = vec4(tex.x, tex.y, fade_tex.x, fade_tex.y); - v_data1 = vec2(gamma_scale, size); + 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 = vec2(tex.x, tex.y); + v_data1 = vec3(gamma_scale, size, interpolated_fade_opacity); } )MBGL_SHADER"; @@ -255,12 +238,11 @@ uniform lowp float u_halo_blur; 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() { @@ -290,9 +272,9 @@ void main() { 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; @@ -306,11 +288,10 @@ 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); |