f166624eb2
The binding point needs to be part of the ShaderUniforms class because Vulkan will need this value to generate the declaration in the shader source. There's still one issue here: Since OpenGL has no local render state, the buffer must be bound every time it is used. Once the code is better abstracted this should be moved to a higher level class that knows all associated data and how to set it up.
84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
//
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//---------------------------------------------------------------------------
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//
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// Copyright(C) 2018 Christoph Oelckers
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// All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser 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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// This program 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 Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with this program. If not, see http://www.gnu.org/licenses/
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//
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//--------------------------------------------------------------------------
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//
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/*
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** gl_uniformbuffer.cpp
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** Uniform buffer abstraction class.
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**
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**/
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#include "gl_load/gl_system.h"
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#include "gl_load/gl_interface.h"
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#include "gl_uniformbuffer.h"
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//==========================================================================
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//
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//
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//
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//==========================================================================
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GLUniformBuffer::GLUniformBuffer(size_t size, bool staticdraw)
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: IUniformBuffer(size), mStaticDraw(staticdraw)
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{
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glGenBuffers(1, &mBufferId);
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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GLUniformBuffer::~GLUniformBuffer()
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{
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if (mBufferId != 0)
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{
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glDeleteBuffers(1, &mBufferId);
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}
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void GLUniformBuffer::SetData(const void *data)
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{
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if (mBufferId != 0)
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{
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glBindBuffer(GL_UNIFORM_BUFFER, mBufferId);
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glBufferData(GL_UNIFORM_BUFFER, mSize, data, mStaticDraw? GL_STATIC_DRAW : GL_STREAM_DRAW);
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}
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}
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//==========================================================================
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//
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// This needs to go away later.
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//
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//==========================================================================
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void GLUniformBuffer::Bind(int bindingpoint)
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{
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glBindBufferBase(GL_UNIFORM_BUFFER, bindingpoint, mBufferId);
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}
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