First commit

src/Nazara/Renderer/SoftwareBuffer.cpp

@@ -0,0 +1,113 @@
+// Copyright (C) 2012 Jérôme Leclercq
+// This file is part of the "Nazara Engine".
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Renderer/OpenGL.hpp>
+#include <Nazara/Renderer/SoftwareBuffer.hpp>
+#include <Nazara/Core/Error.hpp>
+#include <cstring>
+#include <stdexcept>
+#include <Nazara/Renderer/Debug.hpp>
+
+namespace
+{
+	GLenum bufferTarget[] = {
+		GL_ELEMENT_ARRAY_BUFFER, // nzBufferType_Index,
+		GL_ARRAY_BUFFER,		 // nzBufferType_Vertex
+	};
+}
+
+NzSoftwareBuffer::NzSoftwareBuffer(NzBuffer* parent, nzBufferType type) :
+m_type(type)
+{
+	NazaraUnused(parent);
+}
+
+NzSoftwareBuffer::~NzSoftwareBuffer()
+{
+}
+
+void NzSoftwareBuffer::Bind()
+{
+	glBindBuffer(bufferTarget[m_type], 0);
+}
+
+bool NzSoftwareBuffer::Create(unsigned int length, nzUInt8 typeSize, nzBufferUsage usage)
+{
+	NazaraUnused(usage);
+
+	// Cette allocation est protégée car sa taille dépend directement de paramètres utilisateurs
+	try
+	{
+		m_buffer = new nzUInt8[length*typeSize];
+	}
+	catch (const std::exception& e)
+	{
+		NazaraError("Failed to allocate software buffer (" + NzString(e.what()) + ')');
+		return false;
+	}
+
+	m_length = length;
+	m_locked = false;
+	m_typeSize = typeSize;
+
+	return true;
+}
+
+void NzSoftwareBuffer::Destroy()
+{
+	delete[] m_buffer;
+}
+
+bool NzSoftwareBuffer::Fill(const void* data, unsigned int offset, unsigned int length)
+{
+	#if NAZARA_RENDERER_SAFE
+	if (m_locked)
+	{
+		NazaraError("Buffer already locked");
+		return false;
+	}
+	#endif
+
+	std::memcpy(&m_buffer[offset*m_typeSize], data, length*m_typeSize);
+
+	return true;
+}
+
+bool NzSoftwareBuffer::IsHardware() const
+{
+	return false;
+}
+
+void* NzSoftwareBuffer::Lock(nzBufferLock lock, unsigned int offset, unsigned int length)
+{
+	NazaraUnused(length);
+	NazaraUnused(lock);
+
+	#if NAZARA_RENDERER_SAFE
+	if (m_locked)
+	{
+		NazaraError("Buffer already locked");
+		return nullptr;
+	}
+	#endif
+
+	m_locked = true;
+
+	return &m_buffer[offset*m_typeSize];
+}
+
+bool NzSoftwareBuffer::Unlock()
+{
+	#if NAZARA_RENDERER_SAFE
+	if (!m_locked)
+	{
+		NazaraError("Buffer not locked");
+		return true;
+	}
+	#endif
+
+	m_locked = false;
+
+	return true;
+}