50 lines
1.7 KiB
C++
50 lines
1.7 KiB
C++
#include <mbgl/renderer/painter.hpp>
|
|
#include <mbgl/renderer/circle_bucket.hpp>
|
|
|
|
#include <mbgl/layer/circle_layer.hpp>
|
|
|
|
#include <mbgl/map/tile_id.hpp>
|
|
|
|
#include <mbgl/shader/circle_shader.hpp>
|
|
|
|
using namespace mbgl;
|
|
|
|
void Painter::renderCircle(CircleBucket& bucket,
|
|
const CircleLayer& layer,
|
|
const TileID& id,
|
|
const mat4& matrix) {
|
|
// Abort early.
|
|
if (pass == RenderPass::Opaque) return;
|
|
|
|
config.stencilTest = frame.mapMode == MapMode::Still ? GL_TRUE : GL_FALSE;
|
|
config.depthFunc.reset();
|
|
config.depthTest = GL_TRUE;
|
|
config.depthMask = GL_FALSE;
|
|
setDepthSublayer(0);
|
|
|
|
const CirclePaintProperties& properties = layer.paint;
|
|
mat4 vtxMatrix = translatedMatrix(matrix, properties.circleTranslate, id, properties.circleTranslateAnchor);
|
|
|
|
Color color = properties.circleColor;
|
|
color[0] *= properties.circleOpacity;
|
|
color[1] *= properties.circleOpacity;
|
|
color[2] *= properties.circleOpacity;
|
|
color[3] *= properties.circleOpacity;
|
|
|
|
// Antialiasing factor: this is a minimum blur distance that serves as
|
|
// a faux-antialiasing for the circle. since blur is a ratio of the circle's
|
|
// size and the intent is to keep the blur at roughly 1px, the two
|
|
// are inversely related.
|
|
float antialiasing = 1 / frame.pixelRatio / properties.circleRadius;
|
|
|
|
config.program = circleShader->getID();
|
|
|
|
circleShader->u_matrix = vtxMatrix;
|
|
circleShader->u_exmatrix = extrudeMatrix;
|
|
circleShader->u_color = color;
|
|
circleShader->u_blur = std::max<float>(properties.circleBlur, antialiasing);
|
|
circleShader->u_size = properties.circleRadius;
|
|
|
|
bucket.drawCircles(*circleShader, glObjectStore);
|
|
}
|