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#include <mbgl/renderer/painter.hpp>
#include <mbgl/renderer/fill_bucket.hpp>
#include <mbgl/map/map.hpp>
#include <mbgl/map/source.hpp>
#include <mbgl/util/clip_ids.hpp>
using namespace mbgl;
void Painter::drawClippingMasks(const std::set<util::ptr<StyleSource>> &sources) {
gl::group group("clipping masks");
useProgram(plainShader->program);
MBGL_CHECK_ERROR(glDisable(GL_DEPTH_TEST));
depthMask(false);
MBGL_CHECK_ERROR(glColorMask(false, false, false, false));
depthRange(1.0f, 1.0f);
coveringPlainArray.bind(*plainShader, tileStencilBuffer, BUFFER_OFFSET(0));
for (const auto& source : sources) {
source->source->drawClippingMasks(*this);
}
MBGL_CHECK_ERROR(glEnable(GL_DEPTH_TEST));
MBGL_CHECK_ERROR(glColorMask(true, true, true, true));
depthMask(true);
MBGL_CHECK_ERROR(glStencilMask(0x0));
}
void Painter::drawClippingMask(const mat4& matrix, const ClipID &clip) {
plainShader->u_matrix = matrix;
const GLint ref = (GLint)(clip.reference.to_ulong());
const GLuint mask = (GLuint)(clip.mask.to_ulong());
MBGL_CHECK_ERROR(glStencilFunc(GL_ALWAYS, ref, mask));
MBGL_CHECK_ERROR(glStencilMask(mask));
MBGL_CHECK_ERROR(glDrawArrays(GL_TRIANGLES, 0, (GLsizei)tileStencilBuffer.index()));
}
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