diff options
Diffstat (limited to 'src/osd/modules/render/bgfx/sliderreader.cpp')
-rw-r--r-- | src/osd/modules/render/bgfx/sliderreader.cpp | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/src/osd/modules/render/bgfx/sliderreader.cpp b/src/osd/modules/render/bgfx/sliderreader.cpp new file mode 100644 index 00000000000..7bd2d8c59fa --- /dev/null +++ b/src/osd/modules/render/bgfx/sliderreader.cpp @@ -0,0 +1,74 @@ +// license:BSD-3-Clause +// copyright-holders:Ryan Holtz +//============================================================== +// +// sliderreader.cpp - BGFX shader parameter slider JSON reader +// +//============================================================== + +#include "emu.h" + +#include "sliderreader.h" + +#include "slider.h" + +const slider_reader::string_to_enum slider_reader::TYPE_NAMES[slider_reader::TYPE_COUNT] = { + { "bool", uint64_t(bgfx_slider::slider_type::SLIDER_BOOL) }, + { "float", uint64_t(bgfx_slider::slider_type::SLIDER_FLOAT) }, + { "int", uint64_t(bgfx_slider::slider_type::SLIDER_INT) }, + { "color", uint64_t(bgfx_slider::slider_type::SLIDER_COLOR) }, + { "vec2", uint64_t(bgfx_slider::slider_type::SLIDER_VEC2) } +}; + +bgfx_slider* slider_reader::read_from_value(const Value& value) +{ + validate_parameters(value); + + bgfx_slider::slider_type type = bgfx_slider::slider_type(get_enum_from_value(value, "type", uint64_t(bgfx_slider::slider_type::SLIDER_FLOAT), TYPE_NAMES, TYPE_COUNT)); + std::string name = value["name"].GetString(); + std::string description = value["text"].GetString(); + + float defaults[4]; + float min[4]; + float max[4]; + get_values(value, "default", defaults); + get_values(value, "min", min); + get_values(value, "max", max); + + return new bgfx_slider(type, name, description, defaults, min, max); +} + +void slider_reader::get_values(const Value& value, std::string name, float* values) +{ + const char* name_str = name.c_str(); + if (value.HasMember(name_str)) + { + if (value[name_str].IsBool()) + { + values[0] = value[name_str].GetBool() ? 1.0f : 0.0f; + } + else if (value[name_str].IsDouble()) + { + values[0] = float(value[name_str].GetDouble()); + } + else + { + const Value& value_array = value[name_str]; + for (UINT32 i = 0; i < value_array.Size() && i < 4; i++) + { + values[i] = float(value_array[i].GetDouble()); + } + } + } +} + +void slider_reader::validate_parameters(const Value& value) +{ + assert(value.HasMember("type")); + assert(value["type"].IsString()); + assert(value.HasMember("name")); + assert(value["name"].IsString()); + assert(value.HasMember("text")); + assert(value["text"].IsString()); + assert(value.HasMember("default")); +}
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