1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
#include <mbgl/renderer/painter.hpp>
#include <mbgl/renderer/paint_parameters.hpp>
#include <mbgl/gl/gl.hpp>
#include <mbgl/map/view.hpp>
#include <mbgl/renderer/fill_bucket.hpp>
#include <mbgl/renderer/render_tile.hpp>
#include <mbgl/style/layers/fill_layer.hpp>
#include <mbgl/style/layers/fill_layer_impl.hpp>
#include <mbgl/sprite/sprite_atlas.hpp>
#include <mbgl/shader/shaders.hpp>
#include <mbgl/util/convert.hpp>
namespace mbgl {
using namespace style;
void Painter::renderFill(PaintParameters& parameters,
FillBucket& bucket,
const FillLayer& layer,
const RenderTile& tile) {
const FillPaintProperties& properties = layer.impl->paint;
mat4 vertexMatrix = tile.translatedMatrix(properties.fillTranslate,
properties.fillTranslateAnchor,
state);
Color fillColor = properties.fillColor;
float opacity = properties.fillOpacity;
const bool isOutlineColorDefined = !properties.fillOutlineColor.isUndefined();
Color strokeColor = isOutlineColorDefined? properties.fillOutlineColor : fillColor;
const auto viewport = context.viewport.getCurrentValue();
const std::array<GLfloat, 2> worldSize{{ static_cast<GLfloat>(viewport.size.width),
static_cast<GLfloat>(viewport.size.height) }};
bool pattern = !properties.fillPattern.value.from.empty();
bool outline = properties.fillAntialias && !pattern && isOutlineColorDefined;
bool fringeline = properties.fillAntialias && !pattern && !isOutlineColorDefined;
context.stencilOp = { gl::StencilTestOperation::Keep, gl::StencilTestOperation::Keep,
gl::StencilTestOperation::Replace };
context.stencilTest = true;
context.depthFunc = gl::DepthTestFunction::LessEqual;
context.depthTest = true;
context.depthMask = true;
context.lineWidth = 2.0f; // This is always fixed and does not depend on the pixelRatio!
auto& outlineShader = parameters.shaders.fillOutline;
auto& patternShader = parameters.shaders.fillPattern;
auto& outlinePatternShader = parameters.shaders.fillOutlinePattern;
auto& plainShader = parameters.shaders.fill;
// Because we're drawing top-to-bottom, and we update the stencil mask
// befrom, we have to draw the outline first (!)
if (outline && pass == RenderPass::Translucent) {
context.program = outlineShader.getID();
outlineShader.u_matrix = vertexMatrix;
outlineShader.u_outline_color = strokeColor;
outlineShader.u_opacity = opacity;
// Draw the entire line
outlineShader.u_world = worldSize;
if (isOutlineColorDefined) {
// If we defined a different color for the fill outline, we are
// going to ignore the bits in 0x07 and just care about the global
// clipping mask.
setDepthSublayer(2); // OK
} else {
// Otherwise, we only want to drawFill the antialiased parts that are
// *outside* the current shape. This is important in case the fill
// or stroke color is translucent. If we wouldn't clip to outside
// the current shape, some pixels from the outline stroke overlapped
// the (non-antialiased) fill.
setDepthSublayer(0); // OK
}
bucket.drawVertices(outlineShader, context, paintMode());
}
if (pattern) {
optional<SpriteAtlasPosition> imagePosA = spriteAtlas->getPosition(
properties.fillPattern.value.from, SpritePatternMode::Repeating);
optional<SpriteAtlasPosition> imagePosB =
spriteAtlas->getPosition(properties.fillPattern.value.to, SpritePatternMode::Repeating);
// Image fill.
if (pass == RenderPass::Translucent && imagePosA && imagePosB) {
context.program = patternShader.getID();
patternShader.u_matrix = vertexMatrix;
patternShader.u_pattern_tl_a = imagePosA->tl;
patternShader.u_pattern_br_a = imagePosA->br;
patternShader.u_pattern_tl_b = imagePosB->tl;
patternShader.u_pattern_br_b = imagePosB->br;
patternShader.u_opacity = properties.fillOpacity;
patternShader.u_image = 0;
patternShader.u_mix = properties.fillPattern.value.t;
patternShader.u_pattern_size_a = imagePosA->size;
patternShader.u_pattern_size_b = imagePosB->size;
patternShader.u_scale_a = properties.fillPattern.value.fromScale;
patternShader.u_scale_b = properties.fillPattern.value.toScale;
patternShader.u_tile_units_to_pixels = 1.0f / tile.id.pixelsToTileUnits(1.0f, state.getIntegerZoom());
GLint tileSizeAtNearestZoom = util::tileSize * state.zoomScale(state.getIntegerZoom() - tile.id.canonical.z);
GLint pixelX = tileSizeAtNearestZoom * (tile.id.canonical.x + tile.id.wrap * state.zoomScale(tile.id.canonical.z));
GLint pixelY = tileSizeAtNearestZoom * tile.id.canonical.y;
patternShader.u_pixel_coord_upper = {{ float(pixelX >> 16), float(pixelY >> 16) }};
patternShader.u_pixel_coord_lower = {{ float(pixelX & 0xFFFF), float(pixelY & 0xFFFF) }};
spriteAtlas->bind(true, context, 0);
// Draw the actual triangles into the color & stencil buffer.
setDepthSublayer(0);
bucket.drawElements(patternShader, context, paintMode());
if (properties.fillAntialias && !isOutlineColorDefined) {
context.program = outlinePatternShader.getID();
outlinePatternShader.u_matrix = vertexMatrix;
outlinePatternShader.u_pattern_tl_a = imagePosA->tl;
outlinePatternShader.u_pattern_br_a = imagePosA->br;
outlinePatternShader.u_pattern_tl_b = imagePosB->tl;
outlinePatternShader.u_pattern_br_b = imagePosB->br;
outlinePatternShader.u_opacity = properties.fillOpacity;
outlinePatternShader.u_image = 0;
outlinePatternShader.u_mix = properties.fillPattern.value.t;
outlinePatternShader.u_pattern_size_a = imagePosA->size;
outlinePatternShader.u_pattern_size_b = imagePosB->size;
outlinePatternShader.u_scale_a = properties.fillPattern.value.fromScale;
outlinePatternShader.u_scale_b = properties.fillPattern.value.toScale;
outlinePatternShader.u_tile_units_to_pixels = 1.0f / tile.id.pixelsToTileUnits(1.0f, state.getIntegerZoom());
outlinePatternShader.u_pixel_coord_upper = {{ float(pixelX >> 16), float(pixelY >> 16) }};
outlinePatternShader.u_pixel_coord_lower = {{ float(pixelX & 0xFFFF), float(pixelY & 0xFFFF) }};
// Draw the entire line
outlinePatternShader.u_world = worldSize;
spriteAtlas->bind(true, context, 0);
setDepthSublayer(2);
bucket.drawVertices(outlinePatternShader, context, paintMode());
}
}
} else {
// No image fill.
if ((fillColor.a >= 1.0f && opacity >= 1.0f) == (pass == RenderPass::Opaque)) {
// Only draw the fill when it's either opaque and we're drawing opaque
// fragments or when it's translucent and we're drawing translucent
// fragments
// Draw filling rectangle.
context.program = plainShader.getID();
plainShader.u_matrix = vertexMatrix;
plainShader.u_color = fillColor;
plainShader.u_opacity = opacity;
// Draw the actual triangles into the color & stencil buffer.
setDepthSublayer(1);
bucket.drawElements(plainShader, context, paintMode());
}
}
// Because we're drawing top-to-bottom, and we update the stencil mask
// below, we have to draw the outline first (!)
if (fringeline && pass == RenderPass::Translucent) {
context.program = outlineShader.getID();
outlineShader.u_matrix = vertexMatrix;
outlineShader.u_outline_color = fillColor;
outlineShader.u_opacity = opacity;
// Draw the entire line
outlineShader.u_world = worldSize;
setDepthSublayer(2);
bucket.drawVertices(outlineShader, context, paintMode());
}
}
} // namespace mbgl
|
