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#include <mbgl/renderer/symbol_bucket.hpp>
#include <mbgl/renderer/painter.hpp>
#include <mbgl/style/layers/symbol_layer.hpp>
#include <mbgl/shader/symbol_sdf_shader.hpp>
#include <mbgl/shader/symbol_icon_shader.hpp>
#include <mbgl/shader/collision_box_shader.hpp>
#include <mbgl/gl/gl.hpp>
namespace mbgl {
using namespace style;
SymbolBucket::SymbolBucket(const MapMode mode_,
style::SymbolLayoutProperties layout_,
bool sdfIcons_,
bool iconsNeedLinear_)
: mode(mode_),
layout(std::move(layout_)),
sdfIcons(sdfIcons_),
iconsNeedLinear(iconsNeedLinear_) {
}
void SymbolBucket::upload(gl::Context& context) {
if (hasTextData()) {
text.vertexBuffer = context.createVertexBuffer(std::move(text.vertices));
text.indexBuffer = context.createIndexBuffer(std::move(text.triangles));
}
if (hasIconData()) {
icon.vertexBuffer = context.createVertexBuffer(std::move(icon.vertices));
icon.indexBuffer = context.createIndexBuffer(std::move(icon.triangles));
}
if (hasCollisionBoxData()) {
collisionBox.vertexBuffer = context.createVertexBuffer(std::move(collisionBox.vertices));
}
uploaded = true;
}
void SymbolBucket::render(Painter& painter,
PaintParameters& parameters,
const Layer& layer,
const RenderTile& tile) {
painter.renderSymbol(parameters, *this, *layer.as<SymbolLayer>(), tile);
}
bool SymbolBucket::hasData() const {
assert(false); // Should be calling SymbolLayout::hasSymbolInstances() instead.
return false;
}
bool SymbolBucket::hasTextData() const {
return !text.groups.empty();
}
bool SymbolBucket::hasIconData() const {
return !icon.groups.empty();
}
bool SymbolBucket::hasCollisionBoxData() const {
return !collisionBox.groups.empty();
}
bool SymbolBucket::needsClipping() const {
return mode == MapMode::Still;
}
void SymbolBucket::drawGlyphs(SymbolSDFShader& shader,
gl::Context& context,
PaintMode paintMode) {
GLbyte* vertex_index = BUFFER_OFFSET_0;
GLbyte* elements_index = BUFFER_OFFSET_0;
for (auto& group : text.groups) {
group.getVAO(shader, paintMode).bind(
shader, *text.vertexBuffer, *text.indexBuffer, vertex_index, context);
MBGL_CHECK_ERROR(glDrawElements(GL_TRIANGLES, static_cast<GLsizei>(group.indexLength * 3), GL_UNSIGNED_SHORT,
elements_index));
vertex_index += group.vertexLength * text.vertexBuffer->vertexSize;
elements_index += group.indexLength * text.indexBuffer->primitiveSize;
}
}
void SymbolBucket::drawIcons(SymbolSDFShader& shader,
gl::Context& context,
PaintMode paintMode) {
GLbyte* vertex_index = BUFFER_OFFSET_0;
GLbyte* elements_index = BUFFER_OFFSET_0;
for (auto& group : icon.groups) {
group.getVAO(shader, paintMode).bind(
shader, *icon.vertexBuffer, *icon.indexBuffer, vertex_index, context);
MBGL_CHECK_ERROR(glDrawElements(GL_TRIANGLES, static_cast<GLsizei>(group.indexLength * 3), GL_UNSIGNED_SHORT,
elements_index));
vertex_index += group.vertexLength * icon.vertexBuffer->vertexSize;
elements_index += group.indexLength * icon.indexBuffer->primitiveSize;
}
}
void SymbolBucket::drawIcons(SymbolIconShader& shader,
gl::Context& context,
PaintMode paintMode) {
GLbyte* vertex_index = BUFFER_OFFSET_0;
GLbyte* elements_index = BUFFER_OFFSET_0;
for (auto& group : icon.groups) {
group.getVAO(shader, paintMode).bind(
shader, *icon.vertexBuffer, *icon.indexBuffer, vertex_index, context);
MBGL_CHECK_ERROR(glDrawElements(GL_TRIANGLES, static_cast<GLsizei>(group.indexLength * 3), GL_UNSIGNED_SHORT,
elements_index));
vertex_index += group.vertexLength * icon.vertexBuffer->vertexSize;
elements_index += group.indexLength * icon.indexBuffer->primitiveSize;
}
}
void SymbolBucket::drawCollisionBoxes(CollisionBoxShader& shader,
gl::Context& context) {
GLbyte* vertex_index = BUFFER_OFFSET_0;
for (auto& group : collisionBox.groups) {
group.getVAO(shader, PaintMode::Regular).bind(
shader, *collisionBox.vertexBuffer, vertex_index, context);
MBGL_CHECK_ERROR(glDrawArrays(GL_LINES, 0, static_cast<GLsizei>(group.vertexLength)));
}
}
} // namespace mbgl
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