void Painter::renderSymbol(SymbolBucket& bucket, const SymbolLayer& layer, const TileID& id, const mat4& matrix) {
// Abort early.
if (pass == RenderPass::Opaque) {
return;
}
const auto& properties = layer.paint;
const auto& layout = bucket.layout;
config.depthMask = GL_FALSE;
if (bucket.hasCollisionBoxData()) {
config.stencilOp.reset();
config.stencilTest = GL_TRUE;
config.program = collisionBoxShader->program;
collisionBoxShader->u_matrix = matrix;
collisionBoxShader->u_scale = std::pow(2, state.getNormalizedZoom() - id.z);
collisionBoxShader->u_zoom = state.getNormalizedZoom() * 10;
collisionBoxShader->u_maxzoom = (id.z + 1) * 10;
config.lineWidth = 1.0f;
setDepthSublayer(0);
bucket.drawCollisionBoxes(*collisionBoxShader);
}
// TODO remove the `true ||` when #1673 is implemented
const bool drawAcrossEdges = true || !(layout.text.allowOverlap || layout.icon.allowOverlap ||
layout.text.ignorePlacement || layout.icon.ignorePlacement);
// Disable the stencil test so that labels aren't clipped to tile boundaries.
//
// Layers with features that may be drawn overlapping aren't clipped. These
// layers are sorted in the y direction, and to draw the correct ordering near
// tile edges the icons are included in both tiles and clipped when drawing.
if (drawAcrossEdges) {
config.stencilTest = GL_FALSE;
} else {
config.stencilOp.reset();
config.stencilTest = GL_TRUE;
}
if (bucket.hasIconData()) {
if (layout.icon.rotationAlignment == RotationAlignmentType::Map) {
config.depthFunc.reset();
config.depthTest = GL_TRUE;
} else {
config.depthTest = GL_FALSE;
}
bool sdf = bucket.sdfIcons;
const float angleOffset =
layout.icon.rotationAlignment == RotationAlignmentType::Map
? state.getAngle()
: 0;
const float fontSize = properties.icon.size;
const float fontScale = fontSize / 1.0f;
SpriteAtlas* activeSpriteAtlas = layer.spriteAtlas;
activeSpriteAtlas->bind(state.isChanging() || layout.placement == PlacementType::Line
|| angleOffset != 0 || fontScale != 1 || sdf || state.getPitch() != 0);
if (sdf) {
renderSDF(bucket,
id,
matrix,
layout.icon,
properties.icon,
1.0f,
{{ float(activeSpriteAtlas->getWidth()) / 4.0f, float(activeSpriteAtlas->getHeight()) / 4.0f }},
*sdfIconShader,
&SymbolBucket::drawIcons);
} else {
mat4 vtxMatrix = translatedMatrix(matrix, properties.icon.translate, id, properties.icon.translateAnchor);
bool skewed = layout.icon.rotationAlignment == RotationAlignmentType::Map;
mat4 exMatrix;
float s;
if (skewed) {
matrix::identity(exMatrix);
s = 4096.0f / util::tileSize / id.overscaling / std::pow(2, state.getZoom() - id.z);
} else {
exMatrix = extrudeMatrix;
s = state.getAltitude();
}
matrix::scale(exMatrix, exMatrix, s, s, 1);
matrix::scale(exMatrix, exMatrix, fontScale, fontScale, 1.0f);
// calculate how much longer the real world distance is at the top of the screen
// than at the middle of the screen.
float topedgelength = std::sqrt(std::pow(state.getHeight(), 2) / 4.0f * (1.0f + std::pow(state.getAltitude(), 2)));
float x = state.getHeight() / 2.0f * std::tan(state.getPitch());
float extra = (topedgelength + x) / topedgelength - 1;
config.program = iconShader->program;
iconShader->u_matrix = vtxMatrix;
iconShader->u_exmatrix = exMatrix;
iconShader->u_texsize = {{ float(spriteAtlas->getWidth()) / 4.0f, float(spriteAtlas->getHeight()) / 4.0f }};
iconShader->u_skewed = skewed;
iconShader->u_extra = extra;
// adjust min/max zooms for variable font sies
float zoomAdjust = std::log(fontSize / layout.icon.size) / std::log(2);
iconShader->u_zoom = (state.getNormalizedZoom() - zoomAdjust) * 10; // current zoom level
iconShader->u_fadedist = 0 * 10;
iconShader->u_minfadezoom = state.getNormalizedZoom() * 10;
iconShader->u_maxfadezoom = state.getNormalizedZoom() * 10;
iconShader->u_fadezoom = state.getNormalizedZoom() * 10;
iconShader->u_opacity = properties.icon.opacity;
setDepthSublayer(0);
bucket.drawIcons(*iconShader);
}
}
if (bucket.hasTextData()) {
if (layout.text.rotationAlignment == RotationAlignmentType::Map) {
config.depthFunc.reset();
config.depthTest = GL_TRUE;
} else {
config.depthTest = GL_FALSE;
}
glyphAtlas->bind();
renderSDF(bucket,
id,
matrix,
layout.text,
properties.text,
24.0f,
{{ float(glyphAtlas->width) / 4, float(glyphAtlas->height) / 4 }},
*sdfGlyphShader,
&SymbolBucket::drawGlyphs);
}
}
void Painter::renderSymbol(PaintParameters& parameters,
SymbolBucket& bucket,
const SymbolLayer& layer,
const RenderTile& tile) {
// Abort early.
if (pass == RenderPass::Opaque) {
return;
}
const auto& paint = layer.impl->paint;
const auto& layout = bucket.layout;
config.depthMask = GL_FALSE;
// TODO remove the `true ||` when #1673 is implemented
const bool drawAcrossEdges = (frame.mapMode == MapMode::Continuous) && (true || !(layout.textAllowOverlap || layout.iconAllowOverlap ||
layout.textIgnorePlacement || layout.iconIgnorePlacement));
// Disable the stencil test so that labels aren't clipped to tile boundaries.
//
// Layers with features that may be drawn overlapping aren't clipped. These
// layers are sorted in the y direction, and to draw the correct ordering near
// tile edges the icons are included in both tiles and clipped when drawing.
if (drawAcrossEdges) {
config.stencilTest = GL_FALSE;
} else {
config.stencilOp.reset();
config.stencilTest = GL_TRUE;
}
if (bucket.hasIconData()) {
if (layout.iconRotationAlignment == AlignmentType::Map) {
config.depthFunc.reset();
config.depthTest = GL_TRUE;
} else {
config.depthTest = GL_FALSE;
}
bool sdf = bucket.sdfIcons;
const float angleOffset =
layout.iconRotationAlignment == AlignmentType::Map
? state.getAngle()
: 0;
const float fontSize = layer.impl->iconSize;
const float fontScale = fontSize / 1.0f;
SpriteAtlas* activeSpriteAtlas = layer.impl->spriteAtlas;
const bool iconScaled = fontScale != 1 || frame.pixelRatio != activeSpriteAtlas->getPixelRatio() || bucket.iconsNeedLinear;
const bool iconTransformed = layout.iconRotationAlignment == AlignmentType::Map || angleOffset != 0 || state.getPitch() != 0;
activeSpriteAtlas->bind(sdf || state.isChanging() || iconScaled || iconTransformed, store, config, 0);
if (sdf) {
renderSDF(bucket,
tile,
1.0f,
{{ float(activeSpriteAtlas->getWidth()) / 4.0f, float(activeSpriteAtlas->getHeight()) / 4.0f }},
parameters.shaders.sdfIcon,
&SymbolBucket::drawIcons,
layout.iconRotationAlignment,
// icon-pitch-alignment is not yet implemented
// and we simply inherit the rotation alignment
layout.iconRotationAlignment,
layout.iconSize,
paint.iconOpacity,
paint.iconColor,
paint.iconHaloColor,
paint.iconHaloWidth,
paint.iconHaloBlur,
paint.iconTranslate,
paint.iconTranslateAnchor,
layer.impl->iconSize);
} else {
mat4 vtxMatrix = tile.translatedMatrix(paint.iconTranslate,
paint.iconTranslateAnchor,
state);
std::array<float, 2> extrudeScale;
const bool alignedWithMap = layout.iconRotationAlignment == AlignmentType::Map;
if (alignedWithMap) {
extrudeScale.fill(tile.id.pixelsToTileUnits(1, state.getZoom()) * fontScale);
} else {
extrudeScale = {{
pixelsToGLUnits[0] * fontScale * state.getAltitude(),
pixelsToGLUnits[1] * fontScale * state.getAltitude()
}};
}
auto& iconShader = parameters.shaders.icon;
config.program = iconShader.getID();
iconShader.u_matrix = vtxMatrix;
iconShader.u_extrude_scale = extrudeScale;
iconShader.u_texsize = {{ float(activeSpriteAtlas->getWidth()) / 4.0f, float(activeSpriteAtlas->getHeight()) / 4.0f }};
iconShader.u_rotate_with_map = alignedWithMap;
iconShader.u_texture = 0;
// adjust min/max zooms for variable font sies
float zoomAdjust = std::log(fontSize / layout.iconSize) / std::log(2);
iconShader.u_zoom = (state.getZoom() - zoomAdjust) * 10; // current zoom level
iconShader.u_opacity = paint.iconOpacity;
frameHistory.bind(store, config, 1);
iconShader.u_fadetexture = 1;
setDepthSublayer(0);
bucket.drawIcons(iconShader, store, isOverdraw());
}
}
if (bucket.hasTextData()) {
if (layout.textRotationAlignment == AlignmentType::Map) {
config.depthFunc.reset();
config.depthTest = GL_TRUE;
} else {
config.depthTest = GL_FALSE;
}
glyphAtlas->bind(store, config, 0);
renderSDF(bucket,
tile,
24.0f,
{{ float(glyphAtlas->width) / 4, float(glyphAtlas->height) / 4 }},
parameters.shaders.sdfGlyph,
&SymbolBucket::drawGlyphs,
layout.textRotationAlignment,
layout.textPitchAlignment,
layout.textSize,
paint.textOpacity,
paint.textColor,
paint.textHaloColor,
paint.textHaloWidth,
paint.textHaloBlur,
paint.textTranslate,
paint.textTranslateAnchor,
layer.impl->textSize);
}
if (bucket.hasCollisionBoxData()) {
config.stencilOp.reset();
config.stencilTest = GL_TRUE;
auto& collisionBoxShader = shaders->collisionBox;
config.program = collisionBoxShader.getID();
collisionBoxShader.u_matrix = tile.matrix;
// TODO: This was the overscaled z instead of the canonical z.
collisionBoxShader.u_scale = std::pow(2, state.getZoom() - tile.id.canonical.z);
collisionBoxShader.u_zoom = state.getZoom() * 10;
collisionBoxShader.u_maxzoom = (tile.id.canonical.z + 1) * 10;
config.lineWidth = 1.0f;
setDepthSublayer(0);
bucket.drawCollisionBoxes(collisionBoxShader, store);
}
}