Initial commit:

PhysX 3.4.0 Update @ 21294896
APEX 1.4.0 Update @ 21275617

[CL 21300167]

1 files changed, 163 insertions, 0 deletions

diff --git a/PhysX_3.4/Samples/SampleFramework/renderer/src/RendererTexture.cpp b/PhysX_3.4/Samples/SampleFramework/renderer/src/RendererTexture.cpp
new file mode 100644
index 00000000..44b65c76
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+++ b/PhysX_3.4/Samples/SampleFramework/renderer/src/RendererTexture.cpp
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+// This code contains NVIDIA Confidential Information and is disclosed to you
+// under a form of NVIDIA software license agreement provided separately to you.
+//
+// Notice
+// NVIDIA Corporation and its licensors retain all intellectual property and
+// proprietary rights in and to this software and related documentation and
+// any modifications thereto. Any use, reproduction, disclosure, or
+// distribution of this software and related documentation without an express
+// license agreement from NVIDIA Corporation is strictly prohibited.
+//
+// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
+// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
+// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
+//
+// Information and code furnished is believed to be accurate and reliable.
+// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
+// information or for any infringement of patents or other rights of third parties that may
+// result from its use. No license is granted by implication or otherwise under any patent
+// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
+// This code supersedes and replaces all information previously supplied.
+// NVIDIA Corporation products are not authorized for use as critical
+// components in life support devices or systems without express written approval of
+// NVIDIA Corporation.
+//
+// Copyright (c) 2008-2016 NVIDIA Corporation. All rights reserved.
+#include <RendererTexture.h>
+#include <RendererTextureDesc.h>
+#include "foundation/PxMath.h"
+
+using namespace SampleRenderer;
+
+static PxU32 computeCompressedDimension(PxU32 dimension)
+{
+	if(dimension < 4)
+	{
+		dimension = 4;
+	}
+	else
+	{
+		PxU32 mod = dimension % 4;
+		if(mod) dimension += 4 - mod;
+	}
+	return dimension;
+}
+
+PxU32 RendererTexture::computeImageByteSize(PxU32 width, PxU32 height, PxU32 depth, RendererTexture::Format format)
+{
+	PxU32 size = 0;
+	PxU32 numPixels = width * height * depth;
+	switch(format)
+	{
+	case RendererTexture::FORMAT_B8G8R8A8:
+	case RendererTexture::FORMAT_R8G8B8A8:
+		size = numPixels * sizeof(PxU8) * 4;
+		break;
+	case RendererTexture::FORMAT_A8:
+		size = numPixels * sizeof(PxU8) * 1;
+		break;
+	case RendererTexture::FORMAT_R32F:
+		size = numPixels * sizeof(float);
+		break;
+	case RendererTexture::FORMAT_DXT1:
+		width  = computeCompressedDimension(width);
+		height = computeCompressedDimension(height);
+		size   = computeImageByteSize(width, height, depth, RendererTexture::FORMAT_B8G8R8A8) / 8;
+		break;
+	case RendererTexture::FORMAT_DXT3:
+	case RendererTexture::FORMAT_DXT5:
+		width  = computeCompressedDimension(width);
+		height = computeCompressedDimension(height);
+		size   = computeImageByteSize(width, height, depth, RendererTexture::FORMAT_B8G8R8A8) / 4;
+		break;
+	case RendererTexture::FORMAT_PVR_2BPP:
+		{
+			PxU32 bytesPerBlock = 8 * 4 * 2; //8 by 4 pixels times bytes per pixel
+			width = PxMax(PxI32(width / 8), 2);
+			height = PxMax(PxI32(height / 4), 2);
+			size = width*height*bytesPerBlock / 8;
+		}
+		break;
+	case RendererTexture::FORMAT_PVR_4BPP:
+		{
+			PxU32 bytesPerBlock = 4 * 4 * 4; //4 by 4 pixels times bytes per pixel
+			width = PxMax(PxI32(width / 4), 2);
+			height = PxMax(PxI32(height / 4), 2);
+			size = width*height*bytesPerBlock / 8;
+		}
+		break;
+	default: break;
+	}
+	RENDERER_ASSERT(size, "Unable to compute Image Size.");
+	return size;
+}
+
+PxU32 RendererTexture::getLevelDimension(PxU32 dimension, PxU32 level)
+{
+	dimension >>=level;
+	if(!dimension) dimension=1;
+	return dimension;
+}
+
+bool RendererTexture::isCompressedFormat(Format format)
+{
+	return (format >= FORMAT_DXT1 && format <= FORMAT_DXT5) || (format == FORMAT_PVR_2BPP) || (format == FORMAT_PVR_4BPP);
+}
+
+bool RendererTexture::isDepthStencilFormat(Format format)
+{
+	return (format >= FORMAT_D16 && format <= FORMAT_D24S8);
+}
+
+PxU32 RendererTexture::getFormatNumBlocks(PxU32 dimension, Format format)
+{
+	PxU32 blockDimension = 0;
+	if(isCompressedFormat(format))
+	{
+		blockDimension = dimension / 4;
+		if(dimension % 4) blockDimension++;
+	}
+	else
+	{
+		blockDimension = dimension;
+	}
+	return blockDimension;
+}
+
+PxU32 RendererTexture::getFormatBlockSize(Format format)
+{
+	return computeImageByteSize(1, 1, 1, format);
+}
+
+RendererTexture::RendererTexture(const RendererTextureDesc &desc)
+{
+	m_format      = desc.format;
+	m_filter      = desc.filter;
+	m_addressingU = desc.addressingU;
+	m_addressingV = desc.addressingV;
+	m_width       = desc.width;
+	m_height      = desc.height;
+	m_depth       = desc.depth;
+	m_numLevels   = desc.numLevels;
+}
+
+RendererTexture::~RendererTexture(void)
+{
+
+}
+
+PxU32 RendererTexture::getWidthInBlocks(void) const
+{
+	return getFormatNumBlocks(getWidth(), getFormat());
+}
+
+PxU32 RendererTexture::getHeightInBlocks(void) const
+{
+	return getFormatNumBlocks(getHeight(), getFormat());
+}
+
+PxU32 RendererTexture::getBlockSize(void) const
+{
+	return getFormatBlockSize(getFormat());
+}