34 lines
1.1 KiB
C++
34 lines
1.1 KiB
C++
#include <mbgl/shaders/shaders.hpp>
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#include <mbgl/shaders/preludes.hpp>
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#include <mbgl/programs/program_parameters.hpp>
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#include <cassert>
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#include <sstream>
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namespace mbgl {
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namespace shaders {
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static std::string pixelRatioDefine(const ProgramParameters& parameters) {
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std::ostringstream pixelRatioSS;
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pixelRatioSS.imbue(std::locale("C"));
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pixelRatioSS.setf(std::ios_base::showpoint);
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pixelRatioSS << parameters.pixelRatio;
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return std::string("#define DEVICE_PIXEL_RATIO ") + pixelRatioSS.str() + "\n";
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}
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std::string fragmentSource(const ProgramParameters& parameters, const char* fragmentSource) {
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std::string source = pixelRatioDefine(parameters) + fragmentPrelude + fragmentSource;
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if (parameters.overdraw) {
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assert(source.find("#ifdef OVERDRAW_INSPECTOR") != std::string::npos);
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source.replace(source.find_first_of('\n'), 1, "\n#define OVERDRAW_INSPECTOR\n");
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}
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return source;
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}
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std::string vertexSource(const ProgramParameters& parameters, const char* vertexSource) {
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return pixelRatioDefine(parameters) + vertexPrelude + vertexSource;
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}
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} // namespace shaders
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} // namespace mbgl
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