mirror of
https://forgejo.xatacraft.ru/Sunshine/mkxp-sunshine.git
synced 2026-08-19 13:29:54 +00:00
9e63fb6b64
The drawing is now completely shader based, which makes away
with all usage of the depracted matrix stack. This also allows
us to do things like simple translations and texture coordinate
translation directly instead of doing everything indirectly
through matrices.
Fixed vertex attributes ('vertexPointer()' etc) are also
replaced with user defined attribute arrays.
111 lines
2.7 KiB
C++
111 lines
2.7 KiB
C++
/*
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** glstate.cpp
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**
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** This file is part of mkxp.
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**
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** Copyright (C) 2013 Jonas Kulla <Nyocurio@gmail.com>
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**
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** mkxp is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 2 of the License, or
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** (at your option) any later version.
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**
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** mkxp is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with mkxp. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "glstate.h"
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#include "GL/glew.h"
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#include "SDL2/SDL_rect.h"
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#include "etc.h"
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void GLClearColor::apply(const Vec4 &value)
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{
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glClearColor(value.x, value.y, value.z, value.w);
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}
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void GLScissorBox::apply(const IntRect &value)
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{
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glScissor(value.x, value.y, value.w, value.h);
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}
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void GLScissorBox::setIntersect(const IntRect &value)
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{
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IntRect ¤t = get();
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SDL_Rect r1 = { current.x, current.y, current.w, current.h };
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SDL_Rect r2 = { value.x, value.y, value.w, value.h };
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SDL_Rect result;
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if (!SDL_IntersectRect(&r1, &r2, &result))
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result.w = result.h = 0;
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set(IntRect(result.x, result.y, result.w, result.h));
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}
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void GLScissorTest::apply(const bool &value)
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{
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value ? glEnable(GL_SCISSOR_TEST) : glDisable(GL_SCISSOR_TEST);
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}
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void GLTexture2D::apply(const bool &value)
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{
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value ? glEnable(GL_TEXTURE_2D) : glDisable(GL_TEXTURE_2D);
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}
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void GLBlendMode::apply(const BlendType &value)
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{
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switch (value)
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{
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case BlendNone :
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glBlendEquation(GL_FUNC_ADD);
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glBlendFunc(GL_ONE, GL_ZERO);
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break;
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case BlendNormal :
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glBlendEquation(GL_FUNC_ADD);
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glBlendFuncSeparateEXT(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA,
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GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
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break;
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case BlendAddition :
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glBlendEquation(GL_FUNC_ADD);
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glBlendFuncSeparateEXT(GL_SRC_ALPHA, GL_ONE,
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GL_ONE, GL_ONE);
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break;
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case BlendSubstraction :
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// FIXME Alpha calculation is untested
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glBlendEquation(GL_FUNC_REVERSE_SUBTRACT_EXT);
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glBlendFuncSeparateEXT(GL_SRC_ALPHA, GL_ONE,
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GL_ONE, GL_ONE);
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break;
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}
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}
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void GLViewport::apply(const IntRect &value)
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{
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glViewport(value.x, value.y, value.w, value.h);
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}
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GLState::Caps::Caps()
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{
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glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTexSize);
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}
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GLState::GLState()
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{
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glEnable(GL_BLEND);
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glDisable(GL_DEPTH_TEST);
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clearColor.init(Vec4(0, 0, 0, 1));
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blendMode.init(BlendNormal);
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scissorTest.init(false);
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scissorBox.init(IntRect(0, 0, 640, 480));
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texture2D.init(true);
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}
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