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Diffstat (limited to 'src/plugins/renderers/opengl/graphicshelpers/graphicshelperes3_2.cpp')
| -rw-r--r-- | src/plugins/renderers/opengl/graphicshelpers/graphicshelperes3_2.cpp | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/src/plugins/renderers/opengl/graphicshelpers/graphicshelperes3_2.cpp b/src/plugins/renderers/opengl/graphicshelpers/graphicshelperes3_2.cpp new file mode 100644 index 000000000..65108800b --- /dev/null +++ b/src/plugins/renderers/opengl/graphicshelpers/graphicshelperes3_2.cpp @@ -0,0 +1,195 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the Qt3D module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or 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.GPL2 and 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-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "graphicshelperes3_2_p.h" +#include <QOpenGLExtraFunctions> +#include <Qt3DRender/qrendertargetoutput.h> +#include <private/attachmentpack_p.h> + +QT_BEGIN_NAMESPACE + +#ifndef GL_DRAW_FRAMEBUFFER +#define GL_DRAW_FRAMEBUFFER 0x8CA9 +#endif + +#ifndef GL_DEPTH_STENCIL_ATTACHMENT +#define GL_DEPTH_STENCIL_ATTACHMENT 0x821A +#endif + +#ifndef GL_PATCH_VERTICES +#define GL_PATCH_VERTICES 36466 +#endif + +#ifndef GL_IMAGE_BUFFER +#define GL_IMAGE_BUFFER 0x9051 +#endif +#ifndef GL_IMAGE_CUBE_MAP_ARRAY +#define GL_IMAGE_CUBE_MAP_ARRAY 0x9054 +#endif +#ifndef GL_INT_IMAGE_BUFFER +#define GL_INT_IMAGE_BUFFER 0x905C +#endif +#ifndef GL_INT_IMAGE_CUBE_MAP_ARRAY +#define GL_INT_IMAGE_CUBE_MAP_ARRAY 0x905F +#endif +#ifndef GL_UNSIGNED_INT_IMAGE_BUFFER +#define GL_UNSIGNED_INT_IMAGE_BUFFER 0x9067 +#endif +#ifndef GL_UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY +#define GL_UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY 0x906A +#endif + +namespace Qt3DRender { +namespace Render { +namespace OpenGL { + +GraphicsHelperES3_2::GraphicsHelperES3_2() +{ +} + +GraphicsHelperES3_2::~GraphicsHelperES3_2() +{ +} + +bool GraphicsHelperES3_2::supportsFeature(GraphicsHelperInterface::Feature feature) const +{ + switch (feature) { + case GraphicsHelperInterface::Tessellation: + return true; + default: + break; + } + return GraphicsHelperES3_1::supportsFeature(feature); +} + +bool GraphicsHelperES3_2::frameBufferNeedsRenderBuffer(const Attachment &attachment) +{ + Q_UNUSED(attachment); + // This is first ES version where we have glFramebufferTexture, so + // attaching a D24S8 texture to the combined depth-stencil attachment point + // should work. + return false; +} + +void GraphicsHelperES3_2::bindFrameBufferAttachment(QOpenGLTexture *texture, const Attachment &attachment) +{ + GLenum attr = GL_COLOR_ATTACHMENT0; + + if (attachment.m_point <= QRenderTargetOutput::Color15) + attr = GL_COLOR_ATTACHMENT0 + attachment.m_point; + else if (attachment.m_point == QRenderTargetOutput::Depth) + attr = GL_DEPTH_ATTACHMENT; + else if (attachment.m_point == QRenderTargetOutput::Stencil) + attr = GL_STENCIL_ATTACHMENT; + else if (attachment.m_point == QRenderTargetOutput::DepthStencil) + attr = GL_DEPTH_STENCIL_ATTACHMENT; + else + qCritical() << "Unsupported FBO attachment OpenGL ES 3.2"; + + const QOpenGLTexture::Target target = texture->target(); + + texture->bind(); + if (target == QOpenGLTexture::TargetCubeMap && attachment.m_face != QAbstractTexture::AllFaces) + m_funcs->glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, attr, attachment.m_face, texture->textureId(), attachment.m_mipLevel); + else + m_extraFuncs->glFramebufferTexture(GL_DRAW_FRAMEBUFFER, attr, texture->textureId(), attachment.m_mipLevel); + texture->release(); +} + +void GraphicsHelperES3_2::setVerticesPerPatch(GLint verticesPerPatch) +{ + m_extraFuncs->glPatchParameteri(GL_PATCH_VERTICES, verticesPerPatch); +} + +void GraphicsHelperES3_2::drawElementsInstancedBaseVertexBaseInstance(GLenum primitiveType, GLsizei primitiveCount, GLint indexType, void *indices, GLsizei instances, GLint baseVertex, GLint baseInstance) +{ + if (baseInstance != 0) + qWarning() << "glDrawElementsInstancedBaseVertexBaseInstance is not supported with OpenGL ES 2"; + + m_extraFuncs->glDrawElementsInstancedBaseVertex(primitiveType, + primitiveCount, + indexType, + indices, + instances, + baseVertex); +} + +UniformType GraphicsHelperES3_2::uniformTypeFromGLType(GLenum glType) +{ + switch (glType) { + case GL_IMAGE_BUFFER: + case GL_IMAGE_CUBE_MAP_ARRAY: + case GL_INT_IMAGE_BUFFER: + case GL_INT_IMAGE_CUBE_MAP_ARRAY: + case GL_UNSIGNED_INT_IMAGE_BUFFER: + case GL_UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY: + return UniformType::Image; + + default: + return GraphicsHelperES3_1::uniformTypeFromGLType(glType); + } +} + +uint GraphicsHelperES3_2::uniformByteSize(const ShaderUniform &description) +{ + uint rawByteSize = 0; + + switch (description.m_type) { + case GL_IMAGE_BUFFER: + case GL_IMAGE_CUBE_MAP_ARRAY: + case GL_INT_IMAGE_BUFFER: + case GL_INT_IMAGE_CUBE_MAP_ARRAY: + case GL_UNSIGNED_INT_IMAGE_BUFFER: + case GL_UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY: + rawByteSize = 4; + break; + + default: + rawByteSize = GraphicsHelperES3_1::uniformByteSize(description); + break; + } + + return rawByteSize; +} + +} // namespace OpenGL +} // namespace Render +} // namespace Qt3DRender + +QT_END_NAMESPACE |