mirror of
https://github.com/OpenRCT2/OpenRCT2
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102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
#pragma region Copyright (c) 2014-2016 OpenRCT2 Developers
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/*****************************************************************************
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* OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
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*
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* OpenRCT2 is the work of many authors, a full list can be found in contributors.md
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* For more information, visit https://github.com/OpenRCT2/OpenRCT2
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*
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* OpenRCT2 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 3 of the License, or
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* (at your option) any later version.
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*
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* A full copy of the GNU General Public License can be found in licence.txt
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*****************************************************************************/
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#pragma endregion
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#ifndef DISABLE_OPENGL
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#include "FillRectShader.h"
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#include "OpenGLFramebuffer.h"
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FillRectShader::FillRectShader() : OpenGLShaderProgram("fillrect")
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{
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GetLocations();
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glGenBuffers(1, &_vbo);
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glGenVertexArrays(1, &_vao);
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vec2i vertices[] = { 0, 1, 2, 3 };
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glBindBuffer(GL_ARRAY_BUFFER, _vbo);
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glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
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glBindVertexArray(_vao);
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glEnableVertexAttribArray(vIndex);
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glVertexAttribIPointer(vIndex, 1, GL_INT, 0, 0);
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Use();
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SetFlags(0);
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glUniform1i(uSourceFramebuffer, 0);
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}
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FillRectShader::~FillRectShader()
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{
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glDeleteBuffers(1, &_vbo);
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glDeleteVertexArrays(1, &_vao);
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glBindVertexArray(_vao);
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}
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void FillRectShader::GetLocations()
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{
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uScreenSize = GetUniformLocation("uScreenSize");
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uClip = GetUniformLocation("uClip");
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uBounds = GetUniformLocation("uBounds");
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uFlags = GetUniformLocation("uFlags");
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uColour[0] = GetUniformLocation("uColour[0]");
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uColour[1] = GetUniformLocation("uColour[1]");
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uSourceFramebuffer = GetUniformLocation("uSourceFramebuffer");
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vIndex = GetAttributeLocation("vIndex");
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}
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void FillRectShader::SetScreenSize(sint32 width, sint32 height)
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{
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glUniform2i(uScreenSize, width, height);
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}
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void FillRectShader::SetClip(sint32 left, sint32 top, sint32 right, sint32 bottom)
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{
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glUniform4i(uClip, left, top, right, bottom);
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}
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void FillRectShader::SetBounds(sint32 left, sint32 top, sint32 right, sint32 bottom)
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{
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glUniform4i(uBounds, left, top, right, bottom);
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}
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void FillRectShader::SetFlags(uint32 flags)
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{
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glUniform1i(uFlags, flags);
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}
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void FillRectShader::SetColour(int index, vec4f colour)
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{
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glUniform4f(uColour[index], colour.r, colour.g, colour.b, colour.a);
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}
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void FillRectShader::SetSourceFramebuffer(GLuint texture)
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{
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OpenGLAPI::SetTexture2D(0, texture);
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}
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void FillRectShader::Draw(sint32 left, sint32 top, sint32 right, sint32 bottom)
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{
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SetBounds(left, top, right, bottom);
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glBindVertexArray(_vao);
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glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
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}
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#endif /* DISABLE_OPENGL */
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