mirror of
https://github.com/love2d/love.git
synced 2026-08-16 08:11:02 +02:00
Alex Szpakowski
106 lines
2.7 KiB
C++
106 lines
2.7 KiB
C++
/**
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* Copyright (c) 2006-2020 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#include "wrap_Canvas.h"
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#include "Graphics.h"
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namespace love
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{
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namespace graphics
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{
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Canvas *luax_checkcanvas(lua_State *L, int idx)
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{
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return luax_checktype<Canvas>(L, idx);
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}
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int w_Canvas_renderTo(lua_State *L)
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{
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Graphics::RenderTarget rt(luax_checkcanvas(L, 1));
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int startidx = 2;
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if (rt.texture->getTextureType() != TEXTURE_2D)
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{
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rt.slice = (int) luaL_checkinteger(L, 2) - 1;
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startidx++;
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}
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luaL_checktype(L, startidx, LUA_TFUNCTION);
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auto graphics = Module::getInstance<Graphics>(Module::M_GRAPHICS);
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if (graphics)
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{
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// Save the current render targets so we can restore them when we're done.
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Graphics::RenderTargets oldtargets = graphics->getCanvas();
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for (auto c : oldtargets.colors)
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c.texture->retain();
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if (oldtargets.depthStencil.texture != nullptr)
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oldtargets.depthStencil.texture->retain();
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luax_catchexcept(L, [&](){ graphics->setCanvas(rt, false); });
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lua_settop(L, 2); // make sure the function is on top of the stack
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int status = lua_pcall(L, 0, 0, 0);
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graphics->setCanvas(oldtargets);
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for (auto c : oldtargets.colors)
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c.texture->release();
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if (oldtargets.depthStencil.texture != nullptr)
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oldtargets.depthStencil.texture->release();
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if (status != 0)
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return lua_error(L);
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}
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return 0;
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}
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int w_Canvas_getMipmapMode(lua_State *L)
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{
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Canvas *c = luax_checkcanvas(L, 1);
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const char *str;
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if (!Texture::getConstant(c->getMipmapsMode(), str))
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return luax_enumerror(L, "mipmap mode", Texture::getConstants(Texture::MIPMAPS_MAX_ENUM), str);
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lua_pushstring(L, str);
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return 1;
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}
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static const luaL_Reg w_Canvas_functions[] =
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{
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{ "renderTo", w_Canvas_renderTo },
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{ "getMipmapMode", w_Canvas_getMipmapMode },
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{ 0, 0 }
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};
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extern "C" int luaopen_canvas(lua_State *L)
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{
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return luax_register_type(L, &Canvas::type, w_Texture_functions, w_Canvas_functions, nullptr);
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}
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} // graphics
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} // love
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