- moved lightbuffers and flatvertices to 'common'.

src/common/rendering/hwrenderer/data/flatvertices.cpp

@@ -0,0 +1,158 @@
+/*
+** hw_flatvertices.cpp
+** Creates flat vertex data for hardware rendering.
+**
+**---------------------------------------------------------------------------
+** Copyright 2010-2020 Christoph Oelckers
+** All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions
+** are met:
+**
+** 1. Redistributions of source code must retain the above copyright
+**    notice, this list of conditions and the following disclaimer.
+** 2. Redistributions in binary form must reproduce the above copyright
+**    notice, this list of conditions and the following disclaimer in the
+**    documentation and/or other materials provided with the distribution.
+** 3. The name of the author may not be used to endorse or promote products
+**    derived from this software without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**---------------------------------------------------------------------------
+**
+*/
+
+#include "c_cvars.h"
+#include "flatvertices.h"
+#include "v_video.h"
+#include "cmdlib.h"
+#include "printf.h"
+#include "hwrenderer/data/buffers.h"
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
+FFlatVertexBuffer::FFlatVertexBuffer(int width, int height)
+{
+	vbo_shadowdata.Resize(NUM_RESERVED);
+
+	// the first quad is reserved for handling coordinates through uniforms.
+	vbo_shadowdata[0].Set(0, 0, 0, 0, 0);
+	vbo_shadowdata[1].Set(1, 0, 0, 0, 0);
+	vbo_shadowdata[2].Set(2, 0, 0, 0, 0);
+	vbo_shadowdata[3].Set(3, 0, 0, 0, 0);
+
+	// and the second one for the fullscreen quad used for blend overlays.
+	vbo_shadowdata[4].Set(0, 0, 0, 0, 0);
+	vbo_shadowdata[5].Set(0, (float)height, 0, 0, 1);
+	vbo_shadowdata[6].Set((float)width, 0, 0, 1, 0);
+	vbo_shadowdata[7].Set((float)width, (float)height, 0, 1, 1);
+
+	// and this is for the postprocessing copy operation
+	vbo_shadowdata[8].Set(-1.0f, -1.0f, 0, 0.0f, 0.0f);
+	vbo_shadowdata[9].Set(-1.0f, 1.0f, 0, 0.0f, 1.f);
+	vbo_shadowdata[10].Set(1.0f, -1.0f, 0, 1.f, 0.0f);
+	vbo_shadowdata[11].Set(1.0f, 1.0f, 0, 1.f, 1.f);
+
+	// The next two are the stencil caps.
+	vbo_shadowdata[12].Set(-32767.0f, 32767.0f, -32767.0f, 0, 0);
+	vbo_shadowdata[13].Set(-32767.0f, 32767.0f, 32767.0f, 0, 0);
+	vbo_shadowdata[14].Set(32767.0f, 32767.0f, 32767.0f, 0, 0);
+	vbo_shadowdata[15].Set(32767.0f, 32767.0f, -32767.0f, 0, 0);
+
+	vbo_shadowdata[16].Set(-32767.0f, -32767.0f, -32767.0f, 0, 0);
+	vbo_shadowdata[17].Set(-32767.0f, -32767.0f, 32767.0f, 0, 0);
+	vbo_shadowdata[18].Set(32767.0f, -32767.0f, 32767.0f, 0, 0);
+	vbo_shadowdata[19].Set(32767.0f, -32767.0f, -32767.0f, 0, 0);
+
+	mVertexBuffer = screen->CreateVertexBuffer();
+	mIndexBuffer = screen->CreateIndexBuffer();
+
+	unsigned int bytesize = BUFFER_SIZE * sizeof(FFlatVertex);
+	mVertexBuffer->SetData(bytesize, nullptr, false);
+
+	static const FVertexBufferAttribute format[] = {
+		{ 0, VATTR_VERTEX, VFmt_Float3, (int)myoffsetof(FFlatVertex, x) },
+		{ 0, VATTR_TEXCOORD, VFmt_Float2, (int)myoffsetof(FFlatVertex, u) }
+	};
+	mVertexBuffer->SetFormat(1, 2, sizeof(FFlatVertex), format);
+
+	mIndex = mCurIndex = NUM_RESERVED;
+	mNumReserved = NUM_RESERVED;
+	Copy(0, NUM_RESERVED);
+}
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
+FFlatVertexBuffer::~FFlatVertexBuffer()
+{
+	delete mIndexBuffer;
+	delete mVertexBuffer;
+	mIndexBuffer = nullptr;
+	mVertexBuffer = nullptr;
+}
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
+void FFlatVertexBuffer::OutputResized(int width, int height)
+{
+	vbo_shadowdata[4].Set(0, 0, 0, 0, 0);
+	vbo_shadowdata[5].Set(0, (float)height, 0, 0, 1);
+	vbo_shadowdata[6].Set((float)width, 0, 0, 1, 0);
+	vbo_shadowdata[7].Set((float)width, (float)height, 0, 1, 1);
+	Copy(4, 4);
+}
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
+std::pair<FFlatVertex *, unsigned int> FFlatVertexBuffer::AllocVertices(unsigned int count)
+{
+	FFlatVertex *p = GetBuffer();
+	auto index = mCurIndex.fetch_add(count);
+	auto offset = index;
+	if (index + count >= BUFFER_SIZE_TO_USE)
+	{
+		// If a single scene needs 2'000'000 vertices there must be something very wrong. 
+		I_FatalError("Out of vertex memory. Tried to allocate more than %u vertices for a single frame", index + count);
+	}
+	return std::make_pair(p, index);
+}
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
+void FFlatVertexBuffer::Copy(int start, int count)
+{
+	Map();
+	memcpy(GetBuffer(start), &vbo_shadowdata[0], count * sizeof(FFlatVertex));
+	Unmap();
+}
+