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Diffstat (limited to 'src/render/Qt3DSRenderTexture2D.cpp')
| -rw-r--r-- | src/render/Qt3DSRenderTexture2D.cpp | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/src/render/Qt3DSRenderTexture2D.cpp b/src/render/Qt3DSRenderTexture2D.cpp new file mode 100644 index 0000000..c5ea475 --- /dev/null +++ b/src/render/Qt3DSRenderTexture2D.cpp @@ -0,0 +1,263 @@ +/**************************************************************************** +** +** Copyright (C) 2008-2012 NVIDIA Corporation. +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of Qt 3D Studio. +** +** $QT_BEGIN_LICENSE:GPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3 or (at your option) any later version +** approved by the KDE Free Qt Foundation. The licenses are as published by +** the Free Software Foundation and appearing in the file LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "foundation/Qt3DSAllocator.h" +#include "foundation/Qt3DSFoundation.h" +#include "foundation/Qt3DSBroadcastingAllocator.h" +#include "foundation/Qt3DSAtomic.h" +#include "EASTL/vector.h" +#include "render/Qt3DSRenderContext.h" +#include "render/Qt3DSRenderSampler.h" +#include "foundation/Qt3DSDataRef.h" + +namespace qt3ds { +namespace render { + + NVRenderTexture2D::NVRenderTexture2D(NVRenderContextImpl &context, NVFoundationBase &fnd, + NVRenderTextureTargetType::Enum texTarget) + : NVRenderTextureBase(context, fnd, texTarget) + , m_Width(0) + , m_Height(0) + { + } + + NVRenderTexture2D::~NVRenderTexture2D() { m_Context.TextureDestroyed(*this); } + + STextureDetails NVRenderTexture2D::GetTextureDetails() const + { + return STextureDetails(m_Width, m_Height, 0, m_SampleCount, m_Format); + } + + void NVRenderTexture2D::SetTextureData(NVDataRef<QT3DSU8> newBuffer, QT3DSU8 inMipLevel, QT3DSU32 width, + QT3DSU32 height, NVRenderTextureFormats::Enum format, + NVRenderTextureFormats::Enum formatDest) + { + QT3DS_ASSERT(m_TextureHandle); + + // check if we should compress this texture + + if (inMipLevel == 0) { + m_Width = width; + m_Height = height; + m_Format = format; + + // We re-use textures and this might have been a MSAA texture before + // for resue we must completely destroy the texture object and create a new one + // The same is true for immutable textures + if (m_TexTarget == NVRenderTextureTargetType::Texture2D_MS || m_Immutable) { + m_Backend->ReleaseTexture(m_TextureHandle); + m_TexTarget = NVRenderTextureTargetType::Texture2D; + m_SampleCount = 1; + m_TextureHandle = m_Backend->CreateTexture(); + } + + if (NVRenderTextureFormats::isCompressedTextureFormat(formatDest)) { + bool compress = NVRenderTextureFormats::isUncompressedTextureFormat(format); + bool appropriateSizes = ((width % 4) || (height % 4)) == false; + + // we only compress multiple of 4 textures + if (compress && !appropriateSizes) + compress = false; + + if (compress) { + // This seems like a very dubious line here. If we are compressing then the + // image + // is really 1/4 the width and height? - CN + m_Width = width / 4; + m_Height = height / 4; + m_Format = formatDest; + } + } else if (NVRenderTextureFormats::isUncompressedTextureFormat(formatDest)) { + m_Format = formatDest; + } + } + + if (m_MaxMipLevel < inMipLevel) { + m_MaxMipLevel = inMipLevel; + } + + // get max size and check value + QT3DSU32 maxWidth, maxHeight; + m_Context.getMaxTextureSize(maxWidth, maxHeight); + if (width > maxWidth || height > maxHeight) { + qCCritical(INVALID_OPERATION, "Width or height is greater than max texture size (%d, %d)", + maxWidth, maxHeight); + } + if (NVRenderTextureFormats::isUncompressedTextureFormat(format) + || NVRenderTextureFormats::isDepthTextureFormat(format)) { + m_Backend->SetTextureData2D(m_TextureHandle, m_TexTarget, inMipLevel, m_Format, width, + height, 0, format, newBuffer.begin()); + } else if (NVRenderTextureFormats::isCompressedTextureFormat(format)) { + m_Backend->SetCompressedTextureData2D(m_TextureHandle, m_TexTarget, inMipLevel, format, + width, height, 0, newBuffer.size(), + newBuffer.begin()); + } + // Set our texture parameters to a default that will look the best + if (inMipLevel > 0) + SetMinFilter(NVRenderTextureMinifyingOp::LinearMipmapLinear); + } + + void NVRenderTexture2D::SetTextureStorage(QT3DSU32 inLevels, QT3DSU32 width, QT3DSU32 height, + NVRenderTextureFormats::Enum formaInternal, + NVRenderTextureFormats::Enum format, + NVDataRef<QT3DSU8> dataBuffer) + { + QT3DS_ASSERT(m_TextureHandle); + + if (!m_Context.IsShaderImageLoadStoreSupported()) { + qCCritical(INVALID_OPERATION, "The extension Shader_Image_Load_Store is not supported"); + return; + } + + m_Width = width; + m_Height = height; + m_Format = formaInternal; + if (format == NVRenderTextureFormats::Unknown) + format = formaInternal; + + // get max size and check value + QT3DSU32 maxWidth, maxHeight; + m_Context.getMaxTextureSize(maxWidth, maxHeight); + if (width > maxWidth || height > maxHeight) { + qCCritical(INVALID_OPERATION, "Width or height is greater than max texture size (%d, %d)", + maxWidth, maxHeight); + } + + if (inLevels < 1) { + qCCritical(INVALID_PARAMETER, "inLevels is less than 1 (%d)", inLevels); + } + + m_MaxMipLevel = inLevels - 1; // we count from 0 + + // only uncompressed formats are supported and no depth + if (NVRenderTextureFormats::isUncompressedTextureFormat(formaInternal)) { + m_Backend->CreateTextureStorage2D(m_TextureHandle, m_TexTarget, inLevels, formaInternal, + width, height); + + m_Immutable = true; + m_TexTarget = NVRenderTextureTargetType::Texture2D; + + if (dataBuffer.size() > 0) + m_Backend->SetTextureSubData2D(m_TextureHandle, m_TexTarget, 0, 0, 0, width, height, + format, dataBuffer.begin()); + + if (inLevels > 1) + SetMinFilter(NVRenderTextureMinifyingOp::LinearMipmapLinear); + } + } + + void NVRenderTexture2D::SetTextureDataMultisample(QT3DSU32 sampleCount, QT3DSU32 width, QT3DSU32 height, + NVRenderTextureFormats::Enum format) + { + QT3DS_ASSERT(m_TextureHandle); + QT3DS_ASSERT(m_MaxMipLevel == 0); + + m_TexTarget = NVRenderTextureTargetType::Texture2D_MS; + + QT3DSU32 maxWidth, maxHeight; + m_Context.getMaxTextureSize(maxWidth, maxHeight); + if (width > maxWidth || height > maxHeight) { + qCCritical(INVALID_OPERATION, "Width or height is greater than max texture size (%d, %d)", + maxWidth, maxHeight); + } + + QT3DS_ASSERT(NVRenderTextureFormats::isUncompressedTextureFormat(format) + || NVRenderTextureFormats::isDepthTextureFormat(format)); + + m_Backend->SetMultisampledTextureData2D(m_TextureHandle, m_TexTarget, sampleCount, format, + width, height, true); + + m_Width = width; + m_Height = height; + m_SampleCount = sampleCount; + m_Format = format; + } + + void NVRenderTexture2D::SetTextureSubData(NVDataRef<QT3DSU8> newBuffer, QT3DSU8 inMipLevel, + QT3DSU32 inXOffset, QT3DSU32 inYOffset, QT3DSU32 width, + QT3DSU32 height, NVRenderTextureFormats::Enum format) + { + QT3DS_ASSERT(m_TextureHandle); + + if (!NVRenderTextureFormats::isUncompressedTextureFormat(format)) { + qCCritical(INVALID_PARAMETER, "Cannot set sub data for depth or compressed formats"); + QT3DS_ASSERT(false); + return; + } + QT3DSU32 subRectStride = width * NVRenderTextureFormats::getSizeofFormat(format); + if (newBuffer.size() < subRectStride * height) { + qCCritical(INVALID_PARAMETER, "Invalid sub rect buffer size"); + QT3DS_ASSERT(false); + return; + } + // nop + if (width == 0 || height == 0) + return; + + if (inXOffset + width > m_Width || inYOffset + height > m_Height) { + qCCritical(INVALID_PARAMETER, "Sub rect outside existing image bounds"); + QT3DS_ASSERT(false); + return; + } + + // not handled yet + QT3DS_ASSERT(!NVRenderTextureFormats::isDepthTextureFormat(format)); + + m_Backend->SetTextureSubData2D(m_TextureHandle, m_TexTarget, inMipLevel, inXOffset, + inYOffset, width, height, format, newBuffer.begin()); + } + + void NVRenderTexture2D::GenerateMipmaps(NVRenderHint::Enum genType) + { + applyTexParams(); + m_Backend->GenerateMipMaps(m_TextureHandle, m_TexTarget, genType); + QT3DSU32 maxDim = (m_Width >= m_Height) ? m_Width : m_Height; + m_MaxMipLevel = static_cast<QT3DSU32>(logf((float)maxDim) / logf(2.0f)); + // we never create more level than m_MaxLevel + m_MaxMipLevel = qt3ds::NVMin(m_MaxMipLevel, (QT3DSU32)m_MaxLevel); + } + + void NVRenderTexture2D::Bind() + { + m_TextureUnit = m_Context.GetNextTextureUnit(); + + m_Backend->BindTexture(m_TextureHandle, m_TexTarget, m_TextureUnit); + + applyTexParams(); + applyTexSwizzle(); + } + + NVRenderTexture2D *NVRenderTexture2D::Create(NVRenderContextImpl &context) + { + return QT3DS_NEW(context.GetFoundation().getAllocator(), + NVRenderTexture2D)(context, context.GetFoundation()); + } +} +} |