X-Git-Url: https://git.ucc.asn.au/?p=ipdf%2Fcode.git;a=blobdiff_plain;f=src%2Fgraphicsbuffer.cpp;h=da522dc348084c694ca0a61b90f536f60091d94a;hp=eb9845028d1c846e29c021d9fdc3cf8c021953c8;hb=ac518ad085eb5bc84647e4aebe0c5ff06640cd0d;hpb=f8ef964f021d1d6da6ea46bbb1fe8f0250a5be8c

diff --git a/src/graphicsbuffer.cpp b/src/graphicsbuffer.cpp
index eb98450..da522dc 100644
--- a/src/graphicsbuffer.cpp
+++ b/src/graphicsbuffer.cpp
@@ -56,6 +56,8 @@ static GLenum BufferTypeToGLType(GraphicsBuffer::BufferType buffer_type)
 		return GL_PIXEL_UNPACK_BUFFER;
 	case GraphicsBuffer::BufferTypeUniform:
 		return GL_UNIFORM_BUFFER;
+	case GraphicsBuffer::BufferTypeTexture:
+		return GL_TEXTURE_BUFFER;
 	case GraphicsBuffer::BufferTypeDrawIndirect:
 		return GL_DRAW_INDIRECT_BUFFER;
 	default:
@@ -183,12 +185,16 @@ void* GraphicsBuffer::MapRange(int offset, int length, bool read, bool write, bo
 void GraphicsBuffer::UnMap()
 {
 	GLenum target = BufferTypeToGLType(m_buffer_type);
+	
+	// If we're not mapped, unmapping is a no-op.
+	if (!m_map_pointer)
+		return;
 
 	if (m_faking_map)
 	{
 		Upload(m_buffer_size, m_map_pointer);
 		free(m_map_pointer);
-		m_map_pointer = nullptr;
+		m_map_pointer = NULL;
 		m_invalidated = false;
 		m_faking_map = false;
 		return;
@@ -196,7 +202,7 @@ void GraphicsBuffer::UnMap()
 	
 	Bind();
 	glUnmapBuffer(target);
-	m_map_pointer = nullptr;
+	m_map_pointer = NULL;
 	m_invalidated = false;
 }
 
@@ -213,7 +219,7 @@ void GraphicsBuffer::Upload(size_t length, const void* data)
 		Bind();
 		glBufferData(target, length, data, usage);
 	}
-	if (data != nullptr)
+	if (data != NULL)
 		m_invalidated = false;
 }
 
@@ -240,7 +246,7 @@ void GraphicsBuffer::Resize(size_t length)
 		UnMap();
 		GLuint old_buffer = m_buffer_handle;	
 		glGenBuffers(1, &m_buffer_handle);
-		Upload(length, nullptr);
+		Upload(length, NULL);
 		glBindBuffer(GL_COPY_READ_BUFFER, old_buffer);
 		glBindBuffer(GL_COPY_WRITE_BUFFER, m_buffer_handle);
 		glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER, 0, 0, m_buffer_size);
@@ -257,3 +263,7 @@ void GraphicsBuffer::Bind() const
 		glBindBuffer(BufferTypeToGLType(m_buffer_type), m_buffer_handle);
 }
 
+void GraphicsBuffer::BindRange(size_t start, size_t size) const
+{
+	glBindBufferRange(BufferTypeToGLType(m_buffer_type), 0, m_buffer_handle, start, size);
+}