diff options
Diffstat (limited to 'src/shader/shaders.cpp')
| -rw-r--r-- | src/shader/shaders.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/shader/shaders.cpp b/src/shader/shaders.cpp index ff83a1af27..0b99521b98 100644 --- a/src/shader/shaders.cpp +++ b/src/shader/shaders.cpp @@ -33,7 +33,7 @@ const shader_source llmr::shaders[SHADER_COUNT] = { "uniform sampler2D u_image;\nuniform float u_opacity;\n\nvarying vec2 v_pos;\n\nvoid main() {\n gl_FragColor = texture2D(u_image, v_pos) * u_opacity;\n}\n", }, { - "attribute vec2 a_pos;\n\nuniform mat4 u_matrix;\n\nvoid main() {\n gl_Position = u_matrix * vec4(a_pos, 0, 1);\n}\n", - "uniform vec4 u_color;\n\nvoid main() {\n gl_FragColor = u_color;\n}\n", + "attribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec2 a_tex;\nattribute float a_angle;\nattribute float a_minzoom;\nattribute float a_maxzoom;\nattribute float a_rangeend;\nattribute float a_rangestart;\nattribute float a_labelminzoom;\n\n\n// posmatrix is for the vertex position, exmatrix is for rotating and projecting\n// the extrusion vector.\nuniform mat4 u_matrix;\nuniform mat4 u_exmatrix;\nuniform float u_angle;\nuniform float u_zoom;\nuniform float u_flip;\nuniform float u_fadedist;\nuniform float u_minfadezoom;\nuniform float u_maxfadezoom;\nuniform float u_fadezoom;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying float v_alpha;\n\nvoid main() {\n\n float a_fadedist = 10.0;\n float rev = 0.0;\n\n // u_angle is angle of the map, -128..128 representing 0..2PI\n // a_angle is angle of the label, 0..256 representing 0..2PI, where 0 is horizontal text\n float rotated = mod(a_angle + u_angle, 256.0);\n // if the label rotates with the map, and if the rotated label is upside down, hide it\n if (u_flip > 0.0 && rotated >= 64.0 && rotated < 192.0) rev = 1.0;\n\n // If the label should be invisible, we move the vertex outside\n // of the view plane so that the triangle gets clipped. This makes it easier\n // for us to create degenerate triangle strips.\n // u_zoom is the current zoom level adjusted for the change in font size\n float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom)) + rev;\n\n // fade out labels\n float alpha = clamp((u_fadezoom - a_labelminzoom) / u_fadedist, 0.0, 1.0);\n\n if (u_fadedist >= 0.0) {\n v_alpha = alpha;\n } else {\n v_alpha = 1.0 - alpha;\n }\n if (u_maxfadezoom < a_labelminzoom) {\n v_alpha = 0.0;\n }\n if (u_minfadezoom >= a_labelminzoom) {\n v_alpha = 1.0;\n }\n\n // if label has been faded out, clip it\n z += step(v_alpha, 0.0);\n\n // all the angles are 0..256 representing 0..2PI\n // hide if (angle >= a_rangeend && angle < rangestart)\n z += step(a_rangeend, u_angle) * (1.0 - step(a_rangestart, u_angle));\n\n gl_Position = u_matrix * vec4(a_pos, 0, 1) + u_exmatrix * vec4(a_offset / 64.0, z, 0);\n v_tex = a_tex * 4.0 / u_texsize;\n}\n", + "uniform sampler2D u_texture;\nuniform vec4 u_color;\nuniform float u_buffer;\nuniform float u_gamma;\n\nvarying vec2 v_tex;\nvarying float v_alpha;\n\nvoid main() {\n float dist = texture2D(u_texture, v_tex).a;\n float alpha = smoothstep(u_buffer - u_gamma, u_buffer + u_gamma, dist) * v_alpha;\n gl_FragColor = u_color * alpha;\n}\n", } }; |