mirror of
https://github.com/love2d/love.git
synced 2026-08-18 11:44:15 +02:00
Alex Szpakowski
72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
/**
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* Copyright (c) 2006-2017 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 "Text.h"
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#include "graphics/Graphics.h"
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#include "OpenGL.h"
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#include <algorithm>
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namespace love
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{
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namespace graphics
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{
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namespace opengl
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{
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Text::Text(love::graphics::Graphics *gfx, love::graphics::Font *font, const std::vector<Font::ColoredString> &text)
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: love::graphics::Text(gfx, font, text)
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{
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}
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Text::~Text()
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{
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}
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void Text::drawInternal(const std::vector<Font::DrawCommand> &commands) const
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{
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OpenGL::TempDebugGroup debuggroup("Text object draw");
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gl.prepareDraw();
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gl.setVertexPointers(Font::vertexFormat, vbo, 0);
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gl.useVertexAttribArrays(vertex::getFormatFlags(Font::vertexFormat));
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const GLenum gltype = OpenGL::getGLIndexDataType(quadIndices.getType());
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const size_t elemsize = quadIndices.getElementSize();
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gl.bindBuffer(BUFFER_INDEX, (GLuint) quadIndices.getBuffer()->getHandle());
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// We need a separate draw call for every section of the text which uses a
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// different texture than the previous section.
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for (const Font::DrawCommand &cmd : commands)
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{
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GLsizei count = (cmd.vertexcount / 4) * 6;
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size_t offset = (cmd.startvertex / 4) * 6 * elemsize;
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gl.bindTextureToUnit(cmd.texture, 0, false);
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gl.drawElements(GL_TRIANGLES, count, gltype, BUFFER_OFFSET(offset));
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}
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}
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} // opengl
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} // graphics
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} // love
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