| 1 | // Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB). |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #include "attachmentpack_p.h" |
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| 5 | #include <Qt3DRender/private/rendertarget_p.h> |
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| 6 | #include <Qt3DRender/private/rendertargetselectornode_p.h> |
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| 7 | |
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| 8 | QT_BEGIN_NAMESPACE |
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| 9 | |
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| 10 | #ifndef GL_BACK_LEFT |
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| 11 | #define GL_BACK_LEFT 0x0402 |
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| 12 | #endif |
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| 13 | #ifndef GL_BACK_RIGHT |
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| 14 | #define GL_BACK_RIGHT 0x0403 |
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| 15 | #endif |
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| 16 | |
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| 17 | namespace Qt3DRender { |
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| 18 | namespace Render { |
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| 19 | |
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| 20 | AttachmentPack::AttachmentPack() |
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| 21 | { |
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| 22 | } |
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| 23 | |
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| 24 | AttachmentPack::AttachmentPack(const RenderTarget *target, |
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| 25 | AttachmentManager *attachmentManager, |
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| 26 | const QList<QRenderTargetOutput::AttachmentPoint> &drawBuffers) |
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| 27 | { |
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| 28 | // Copy attachments |
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| 29 | const auto outputIds = target->renderOutputs(); |
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| 30 | for (Qt3DCore::QNodeId outputId : outputIds) { |
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| 31 | const RenderTargetOutput *output = attachmentManager->lookupResource(id: outputId); |
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| 32 | if (output) |
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| 33 | m_attachments.push_back(x: *output->attachment()); |
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| 34 | } |
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| 35 | |
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| 36 | // Sort by attachment point |
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| 37 | std::sort(first: m_attachments.begin(), |
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| 38 | last: m_attachments.end(), |
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| 39 | comp: [] (const Attachment &a, const Attachment &b) { |
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| 40 | return a.m_point < b.m_point; |
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| 41 | }); |
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| 42 | |
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| 43 | |
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| 44 | // Create actual DrawBuffers list that is used for glDrawBuffers |
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| 45 | |
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| 46 | // If nothing is specified, use all the attachments as draw buffers |
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| 47 | if (drawBuffers.empty()) { |
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| 48 | m_drawBuffers.reserve(n: m_attachments.size()); |
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| 49 | for (const Attachment &attachment : std::as_const(t&: m_attachments)) { |
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| 50 | if ((attachment.m_point >= QRenderTargetOutput::Color0 && attachment.m_point <= QRenderTargetOutput::Color15) |
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| 51 | || attachment.m_point == QRenderTargetOutput::Left |
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| 52 | || attachment.m_point == QRenderTargetOutput::Right) |
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| 53 | m_drawBuffers.push_back(x: attachment.m_point); |
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| 54 | } |
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| 55 | } else { |
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| 56 | m_drawBuffers.reserve(n: drawBuffers.size()); |
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| 57 | for (QRenderTargetOutput::AttachmentPoint drawBuffer : drawBuffers) { |
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| 58 | if ((drawBuffer >= QRenderTargetOutput::Color0 && drawBuffer <= QRenderTargetOutput::Color15) |
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| 59 | || drawBuffer == QRenderTargetOutput::Left |
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| 60 | || drawBuffer == QRenderTargetOutput::Right) |
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| 61 | m_drawBuffers.push_back(x: drawBuffer); |
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| 62 | } |
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| 63 | } |
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| 64 | } |
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| 65 | |
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| 66 | // return index of given attachment within actual draw buffers list |
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| 67 | int AttachmentPack::getDrawBufferIndex(QRenderTargetOutput::AttachmentPoint attachmentPoint) const |
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| 68 | { |
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| 69 | for (size_t i = 0; i < m_drawBuffers.size(); i++) |
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| 70 | if (m_drawBuffers.at(n: i) == attachmentPoint) |
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| 71 | return int(i); |
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| 72 | return -1; |
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| 73 | } |
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| 74 | |
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| 75 | bool operator ==(const Attachment &a, const Attachment &b) |
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| 76 | { |
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| 77 | return (a.m_name == b.m_name && |
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| 78 | a.m_mipLevel == b.m_mipLevel && |
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| 79 | a.m_layer == b.m_layer && |
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| 80 | a.m_textureUuid == b.m_textureUuid && |
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| 81 | a.m_point == b.m_point && |
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| 82 | a.m_face == b.m_face); |
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| 83 | } |
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| 84 | |
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| 85 | bool operator !=(const Attachment &a, const Attachment &b) |
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| 86 | { |
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| 87 | return !(a == b); |
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| 88 | } |
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| 89 | |
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| 90 | bool operator ==(const AttachmentPack &packA, const AttachmentPack &packB) |
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| 91 | { |
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| 92 | return (packA.attachments() == packB.attachments() && |
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| 93 | packA.getDrawBuffers() == packB.getDrawBuffers()); |
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| 94 | } |
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| 95 | |
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| 96 | bool operator !=(const AttachmentPack &packA, const AttachmentPack &packB) |
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| 97 | { |
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| 98 | return !(packA == packB); |
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| 99 | } |
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| 100 | |
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| 101 | } // namespace Render |
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| 102 | } // namespace Qt3DRender |
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| 103 | |
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| 104 | QT_END_NAMESPACE |
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| 105 | |
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