39 lines
2.2 KiB
C++
39 lines
2.2 KiB
C++
#include <mbgl/programs/fill_program.hpp>
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#include <mbgl/renderer/image_atlas.hpp>
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#include <mbgl/renderer/cross_faded_property_evaluator.hpp>
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#include <mbgl/tile/tile_id.hpp>
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#include <mbgl/map/transform_state.hpp>
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namespace mbgl {
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using namespace style;
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static_assert(sizeof(FillLayoutVertex) == 4, "expected FillLayoutVertex size");
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FillPatternProgram::LayoutUniformValues FillPatternProgram::layoutUniformValues(mat4 matrix,
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Size framebufferSize,
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Size atlasSize,
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const CrossfadeParameters& crossfade,
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const UnwrappedTileID& tileID,
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const TransformState& state,
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const float pixelRatio) {
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const auto tileRatio = 1 / tileID.pixelsToTileUnits(1, state.getIntegerZoom());
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int32_t tileSizeAtNearestZoom = static_cast<int32_t>(util::tileSize_D *
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state.zoomScale(state.getIntegerZoom() - tileID.canonical.z));
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int32_t pixelX = static_cast<int32_t>(tileSizeAtNearestZoom *
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(tileID.canonical.x + tileID.wrap * state.zoomScale(tileID.canonical.z)));
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int32_t pixelY = tileSizeAtNearestZoom * tileID.canonical.y;
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return {uniforms::matrix::Value(matrix),
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uniforms::world::Value(framebufferSize),
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uniforms::texsize::Value(atlasSize),
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uniforms::scale::Value({{pixelRatio, tileRatio, crossfade.fromScale, crossfade.toScale}}),
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uniforms::fade::Value(crossfade.t),
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uniforms::pixel_coord_upper::Value(
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std::array<float, 2>{{static_cast<float>(pixelX >> 16), static_cast<float>(pixelY >> 16)}}),
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uniforms::pixel_coord_lower::Value(
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std::array<float, 2>{{static_cast<float>(pixelX & 0xFFFF), static_cast<float>(pixelY & 0xFFFF)}})};
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}
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} // namespace mbgl
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