| /**************************************************************************** |
| ** |
| ** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB). |
| ** Contact: https://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 |
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| ** |
| ** 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 |
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| ** |
| ** 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 |
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| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "graphicshelpergl2_p.h" |
| #ifndef QT_OPENGL_ES_2 |
| #include <QOpenGLFunctions_2_0> |
| #include <private/attachmentpack_p.h> |
| #include <QtOpenGLExtensions/QOpenGLExtensions> |
| #include <qgraphicsutils_p.h> |
| #include <logging_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace Qt3DRender { |
| namespace Render { |
| namespace OpenGL { |
| |
| GraphicsHelperGL2::GraphicsHelperGL2() |
| : m_funcs(nullptr) |
| , m_fboFuncs(nullptr) |
| { |
| |
| } |
| |
| void GraphicsHelperGL2::initializeHelper(QOpenGLContext *context, |
| QAbstractOpenGLFunctions *functions) |
| { |
| Q_UNUSED(context); |
| m_funcs = static_cast<QOpenGLFunctions_2_0*>(functions); |
| const bool ok = m_funcs->initializeOpenGLFunctions(); |
| Q_ASSERT(ok); |
| Q_UNUSED(ok); |
| if (context->hasExtension(QByteArrayLiteral("GL_ARB_framebuffer_object"))) { |
| m_fboFuncs = new QOpenGLExtension_ARB_framebuffer_object(); |
| const bool extensionOk = m_fboFuncs->initializeOpenGLFunctions(); |
| Q_ASSERT(extensionOk); |
| Q_UNUSED(extensionOk); |
| } |
| } |
| |
| void GraphicsHelperGL2::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"; |
| |
| if (baseVertex != 0) |
| qWarning() << "glDrawElementsInstancedBaseVertex is not supported with OpenGL ES 2"; |
| |
| for (GLint i = 0; i < instances; i++) |
| drawElements(primitiveType, |
| primitiveCount, |
| indexType, |
| indices); |
| } |
| |
| void GraphicsHelperGL2::drawArraysInstanced(GLenum primitiveType, |
| GLint first, |
| GLsizei count, |
| GLsizei instances) |
| { |
| for (GLint i = 0; i < instances; i++) |
| drawArrays(primitiveType, |
| first, |
| count); |
| } |
| |
| void GraphicsHelperGL2::drawArraysInstancedBaseInstance(GLenum primitiveType, GLint first, GLsizei count, GLsizei instances, GLsizei baseInstance) |
| { |
| if (baseInstance != 0) |
| qWarning() << "glDrawArraysInstancedBaseInstance is not supported with OpenGL 2"; |
| for (GLint i = 0; i < instances; i++) |
| drawArrays(primitiveType, |
| first, |
| count); |
| } |
| |
| void GraphicsHelperGL2::drawElements(GLenum primitiveType, |
| GLsizei primitiveCount, |
| GLint indexType, |
| void *indices, |
| GLint baseVertex) |
| { |
| if (baseVertex != 0) |
| qWarning() << "glDrawElementsBaseVertex is not supported with OpenGL 2"; |
| |
| m_funcs->glDrawElements(primitiveType, |
| primitiveCount, |
| indexType, |
| indices); |
| } |
| |
| void GraphicsHelperGL2::drawArrays(GLenum primitiveType, |
| GLint first, |
| GLsizei count) |
| { |
| m_funcs->glDrawArrays(primitiveType, |
| first, |
| count); |
| } |
| |
| void GraphicsHelperGL2::drawElementsIndirect(GLenum, GLenum, void *) |
| { |
| qWarning() << "Indirect Drawing is not supported with OpenGL 2"; |
| } |
| |
| void GraphicsHelperGL2::drawArraysIndirect(GLenum , void *) |
| { |
| qWarning() << "Indirect Drawing is not supported with OpenGL 2"; |
| } |
| |
| void GraphicsHelperGL2::setVerticesPerPatch(GLint verticesPerPatch) |
| { |
| Q_UNUSED(verticesPerPatch); |
| qWarning() << "Tessellation not supported with OpenGL 2"; |
| } |
| |
| void GraphicsHelperGL2::useProgram(GLuint programId) |
| { |
| m_funcs->glUseProgram(programId); |
| } |
| |
| QVector<ShaderUniform> GraphicsHelperGL2::programUniformsAndLocations(GLuint programId) |
| { |
| QVector<ShaderUniform> uniforms; |
| |
| GLint nbrActiveUniforms = 0; |
| m_funcs->glGetProgramiv(programId, GL_ACTIVE_UNIFORMS, &nbrActiveUniforms); |
| uniforms.reserve(nbrActiveUniforms); |
| char uniformName[256]; |
| for (GLint i = 0; i < nbrActiveUniforms; i++) { |
| ShaderUniform uniform; |
| GLsizei uniformNameLength = 0; |
| // Size is 1 for scalar and more for struct or arrays |
| // Type is the GL Type |
| m_funcs->glGetActiveUniform(programId, i, sizeof(uniformName) - 1, &uniformNameLength, |
| &uniform.m_size, &uniform.m_type, uniformName); |
| uniformName[sizeof(uniformName) - 1] = '\0'; |
| uniform.m_location = m_funcs->glGetUniformLocation(programId, uniformName); |
| uniform.m_name = QString::fromUtf8(uniformName, uniformNameLength); |
| // Work around for uniform array names that aren't returned with [0] by some drivers |
| if (uniform.m_size > 1 && !uniform.m_name.endsWith(QLatin1String("[0]"))) |
| uniform.m_name.append(QLatin1String("[0]")); |
| uniform.m_rawByteSize = uniformByteSize(uniform); |
| uniforms.append(uniform); |
| } |
| return uniforms; |
| } |
| |
| QVector<ShaderAttribute> GraphicsHelperGL2::programAttributesAndLocations(GLuint programId) |
| { |
| QVector<ShaderAttribute> attributes; |
| GLint nbrActiveAttributes = 0; |
| m_funcs->glGetProgramiv(programId, GL_ACTIVE_ATTRIBUTES, &nbrActiveAttributes); |
| attributes.reserve(nbrActiveAttributes); |
| char attributeName[256]; |
| for (GLint i = 0; i < nbrActiveAttributes; i++) { |
| ShaderAttribute attribute; |
| GLsizei attributeNameLength = 0; |
| // Size is 1 for scalar and more for struct or arrays |
| // Type is the GL Type |
| m_funcs->glGetActiveAttrib(programId, i, sizeof(attributeName) - 1, &attributeNameLength, |
| &attribute.m_size, &attribute.m_type, attributeName); |
| attributeName[sizeof(attributeName) - 1] = '\0'; |
| attribute.m_location = m_funcs->glGetAttribLocation(programId, attributeName); |
| attribute.m_name = QString::fromUtf8(attributeName, attributeNameLength); |
| attributes.append(attribute); |
| } |
| return attributes; |
| } |
| |
| QVector<ShaderUniformBlock> GraphicsHelperGL2::programUniformBlocks(GLuint programId) |
| { |
| Q_UNUSED(programId); |
| QVector<ShaderUniformBlock> blocks; |
| qWarning() << "UBO are not supported by OpenGL 2.0 (since OpenGL 3.1)"; |
| return blocks; |
| } |
| |
| QVector<ShaderStorageBlock> GraphicsHelperGL2::programShaderStorageBlocks(GLuint programId) |
| { |
| Q_UNUSED(programId); |
| qWarning() << "SSBO are not supported by OpenGL 2.0 (since OpenGL 4.3)"; |
| return QVector<ShaderStorageBlock>(); |
| } |
| |
| void GraphicsHelperGL2::vertexAttribDivisor(GLuint index, |
| GLuint divisor) |
| { |
| Q_UNUSED(index); |
| Q_UNUSED(divisor); |
| } |
| |
| void GraphicsHelperGL2::vertexAttributePointer(GLenum shaderDataType, |
| GLuint index, |
| GLint size, |
| GLenum type, |
| GLboolean normalized, |
| GLsizei stride, |
| const GLvoid *pointer) |
| { |
| switch (shaderDataType) { |
| case GL_FLOAT: |
| case GL_FLOAT_VEC2: |
| case GL_FLOAT_VEC3: |
| case GL_FLOAT_VEC4: |
| case GL_FLOAT_MAT2: |
| case GL_FLOAT_MAT2x3: |
| case GL_FLOAT_MAT2x4: |
| case GL_FLOAT_MAT3: |
| case GL_FLOAT_MAT3x2: |
| case GL_FLOAT_MAT3x4: |
| case GL_FLOAT_MAT4x2: |
| case GL_FLOAT_MAT4x3: |
| case GL_FLOAT_MAT4: |
| m_funcs->glVertexAttribPointer(index, size, type, normalized, stride, pointer); |
| break; |
| |
| default: |
| qCWarning(Rendering) << "vertexAttribPointer: Unhandled type"; |
| Q_UNREACHABLE(); |
| } |
| } |
| |
| void GraphicsHelperGL2::readBuffer(GLenum mode) |
| { |
| m_funcs->glReadBuffer(mode); |
| } |
| |
| void GraphicsHelperGL2::drawBuffer(GLenum mode) |
| { |
| m_funcs->glDrawBuffer(mode); |
| } |
| |
| void *GraphicsHelperGL2::fenceSync() |
| { |
| qWarning() << "Fences are not supported by OpenGL 2.0 (since OpenGL 3.2)"; |
| return nullptr; |
| } |
| |
| void GraphicsHelperGL2::clientWaitSync(void *, GLuint64 ) |
| { |
| qWarning() << "Fences are not supported by OpenGL 2.0 (since OpenGL 3.2)"; |
| } |
| |
| void GraphicsHelperGL2::waitSync(void *) |
| { |
| qWarning() << "Fences are not supported by OpenGL 2.0 (since OpenGL 3.2)"; |
| } |
| |
| bool GraphicsHelperGL2::wasSyncSignaled(void *) |
| { |
| qWarning() << "Fences are not supported by OpenGL 2.0 (since OpenGL 3.2)"; |
| return false; |
| } |
| |
| void GraphicsHelperGL2::deleteSync(void *) |
| { |
| qWarning() << "Fences are not supported by OpenGL 2.0 (since OpenGL 3.2)"; |
| } |
| |
| void GraphicsHelperGL2::rasterMode(GLenum faceMode, GLenum rasterMode) |
| { |
| m_funcs->glPolygonMode(faceMode, rasterMode); |
| } |
| |
| void GraphicsHelperGL2::blendEquation(GLenum mode) |
| { |
| m_funcs->glBlendEquation(mode); |
| } |
| |
| void GraphicsHelperGL2::blendFunci(GLuint buf, GLenum sfactor, GLenum dfactor) |
| { |
| Q_UNUSED(buf); |
| Q_UNUSED(sfactor); |
| Q_UNUSED(dfactor); |
| |
| qWarning() << "glBlendFunci() not supported by OpenGL 2.0 (since OpenGL 4.0)"; |
| } |
| |
| void GraphicsHelperGL2::blendFuncSeparatei(GLuint buf, GLenum sRGB, GLenum dRGB, GLenum sAlpha, GLenum dAlpha) |
| { |
| Q_UNUSED(buf); |
| Q_UNUSED(sRGB); |
| Q_UNUSED(dRGB); |
| Q_UNUSED(sAlpha); |
| Q_UNUSED(dAlpha); |
| |
| qWarning() << "glBlendFuncSeparatei() not supported by OpenGL 2.0 (since OpenGL 4.0)"; |
| } |
| |
| void GraphicsHelperGL2::alphaTest(GLenum mode1, GLenum mode2) |
| { |
| m_funcs->glEnable(GL_ALPHA_TEST); |
| m_funcs->glAlphaFunc(mode1, mode2); |
| } |
| |
| void GraphicsHelperGL2::depthTest(GLenum mode) |
| { |
| m_funcs->glEnable(GL_DEPTH_TEST); |
| m_funcs->glDepthFunc(mode); |
| } |
| |
| void GraphicsHelperGL2::depthMask(GLenum mode) |
| { |
| m_funcs->glDepthMask(mode); |
| } |
| |
| void GraphicsHelperGL2::depthRange(GLdouble nearValue, GLdouble farValue) |
| { |
| m_funcs->glDepthRange(nearValue, farValue); |
| } |
| |
| void GraphicsHelperGL2::frontFace(GLenum mode) |
| { |
| m_funcs->glFrontFace(mode); |
| } |
| |
| void GraphicsHelperGL2::setMSAAEnabled(bool enabled) |
| { |
| enabled ? m_funcs->glEnable(GL_MULTISAMPLE) |
| : m_funcs->glDisable(GL_MULTISAMPLE); |
| } |
| |
| void GraphicsHelperGL2::setAlphaCoverageEnabled(bool enabled) |
| { |
| enabled ? m_funcs->glEnable(GL_SAMPLE_ALPHA_TO_COVERAGE) |
| : m_funcs->glDisable(GL_SAMPLE_ALPHA_TO_COVERAGE); |
| } |
| |
| GLuint GraphicsHelperGL2::createFrameBufferObject() |
| { |
| if (m_fboFuncs != nullptr) { |
| GLuint id; |
| m_fboFuncs->glGenFramebuffers(1, &id); |
| return id; |
| } |
| qWarning() << "FBO not supported by your OpenGL hardware"; |
| return 0; |
| } |
| |
| void GraphicsHelperGL2::releaseFrameBufferObject(GLuint frameBufferId) |
| { |
| if (m_fboFuncs != nullptr) |
| m_fboFuncs->glDeleteFramebuffers(1, &frameBufferId); |
| else |
| qWarning() << "FBO not supported by your OpenGL hardware"; |
| } |
| |
| bool GraphicsHelperGL2::checkFrameBufferComplete() |
| { |
| if (m_fboFuncs != nullptr) |
| return (m_fboFuncs->glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE); |
| return false; |
| } |
| |
| bool GraphicsHelperGL2::frameBufferNeedsRenderBuffer(const Attachment &attachment) |
| { |
| Q_UNUSED(attachment); |
| return false; |
| } |
| |
| void GraphicsHelperGL2::bindFrameBufferAttachment(QOpenGLTexture *texture, const Attachment &attachment) |
| { |
| if (m_fboFuncs != nullptr) { |
| GLenum attr = GL_DEPTH_STENCIL_ATTACHMENT; |
| |
| 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 |
| qCritical() << "DepthStencil Attachment not supported on OpenGL 2.0"; |
| |
| const QOpenGLTexture::Target target = texture->target(); |
| |
| if (target == QOpenGLTexture::TargetCubeMap && attachment.m_face == QAbstractTexture::AllFaces) { |
| qWarning() << "OpenGL 2.0 doesn't handle attaching all the faces of a cube map texture at once to an FBO"; |
| return; |
| } |
| |
| texture->bind(); |
| if (target == QOpenGLTexture::Target3D) |
| m_fboFuncs->glFramebufferTexture3D(GL_DRAW_FRAMEBUFFER, attr, target, texture->textureId(), attachment.m_mipLevel, attachment.m_layer); |
| else if (target == QOpenGLTexture::TargetCubeMap) |
| m_fboFuncs->glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, attr, attachment.m_face, texture->textureId(), attachment.m_mipLevel); |
| else if (target == QOpenGLTexture::Target1D) |
| m_fboFuncs->glFramebufferTexture1D(GL_DRAW_FRAMEBUFFER, attr, target, texture->textureId(), attachment.m_mipLevel); |
| else if (target == QOpenGLTexture::Target2D || target == QOpenGLTexture::TargetRectangle) |
| m_fboFuncs->glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, attr, target, texture->textureId(), attachment.m_mipLevel); |
| else |
| qCritical() << "Texture format not supported for Attachment on OpenGL 2.0"; |
| texture->release(); |
| } |
| } |
| |
| void GraphicsHelperGL2::bindFrameBufferAttachment(RenderBuffer *renderBuffer, const Attachment &attachment) |
| { |
| Q_UNUSED(renderBuffer); |
| Q_UNUSED(attachment); |
| Q_UNREACHABLE(); |
| } |
| |
| bool GraphicsHelperGL2::supportsFeature(GraphicsHelperInterface::Feature feature) const |
| { |
| switch (feature) { |
| case MRT: |
| return (m_fboFuncs != nullptr); |
| case TextureDimensionRetrieval: |
| case MapBuffer: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| void GraphicsHelperGL2::drawBuffers(GLsizei n, const int *bufs) |
| { |
| QVarLengthArray<GLenum, 16> drawBufs(n); |
| |
| for (int i = 0; i < n; i++) |
| drawBufs[i] = GL_COLOR_ATTACHMENT0 + bufs[i]; |
| m_funcs->glDrawBuffers(n, drawBufs.constData()); |
| } |
| |
| void GraphicsHelperGL2::bindFragDataLocation(GLuint, const QHash<QString, int> &) |
| { |
| qCritical() << "bindFragDataLocation is not supported by GL 2.0"; |
| } |
| |
| void GraphicsHelperGL2::bindFrameBufferObject(GLuint frameBufferId, FBOBindMode mode) |
| { |
| if (m_fboFuncs != nullptr) { |
| switch (mode) { |
| case FBODraw: |
| m_fboFuncs->glBindFramebuffer(GL_DRAW_FRAMEBUFFER, frameBufferId); |
| return; |
| case FBORead: |
| m_fboFuncs->glBindFramebuffer(GL_READ_FRAMEBUFFER, frameBufferId); |
| return; |
| case FBOReadAndDraw: |
| default: |
| m_fboFuncs->glBindFramebuffer(GL_FRAMEBUFFER, frameBufferId); |
| return; |
| } |
| } else { |
| qWarning() << "FBO not supported by your OpenGL hardware"; |
| } |
| } |
| |
| void GraphicsHelperGL2::bindImageTexture(GLuint imageUnit, GLuint texture, |
| GLint mipLevel, GLboolean layered, |
| GLint layer, GLenum access, GLenum format) |
| { |
| Q_UNUSED(imageUnit) |
| Q_UNUSED(texture) |
| Q_UNUSED(mipLevel) |
| Q_UNUSED(layered) |
| Q_UNUSED(layer) |
| Q_UNUSED(access) |
| Q_UNUSED(format) |
| qWarning() << "Shader Images are not supported by OpenGL 2.0 (since OpenGL 4.2)"; |
| |
| } |
| |
| GLuint GraphicsHelperGL2::boundFrameBufferObject() |
| { |
| GLint id = 0; |
| m_funcs->glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &id); |
| return id; |
| } |
| |
| void GraphicsHelperGL2::bindUniformBlock(GLuint programId, GLuint uniformBlockIndex, GLuint uniformBlockBinding) |
| { |
| Q_UNUSED(programId); |
| Q_UNUSED(uniformBlockIndex); |
| Q_UNUSED(uniformBlockBinding); |
| qWarning() << "UBO are not supported by OpenGL 2.0 (since OpenGL 3.1)"; |
| } |
| |
| void GraphicsHelperGL2::bindShaderStorageBlock(GLuint programId, GLuint shaderStorageBlockIndex, GLuint shaderStorageBlockBinding) |
| { |
| Q_UNUSED(programId); |
| Q_UNUSED(shaderStorageBlockIndex); |
| Q_UNUSED(shaderStorageBlockBinding); |
| qWarning() << "SSBO are not supported by OpenGL 2.0 (since OpenGL 4.3)"; |
| } |
| |
| void GraphicsHelperGL2::bindBufferBase(GLenum target, GLuint index, GLuint buffer) |
| { |
| Q_UNUSED(target); |
| Q_UNUSED(index); |
| Q_UNUSED(buffer); |
| qWarning() << "bindBufferBase is not supported by OpenGL 2.0 (since OpenGL 3.0)"; |
| } |
| |
| void GraphicsHelperGL2::buildUniformBuffer(const QVariant &v, const ShaderUniform &description, QByteArray &buffer) |
| { |
| Q_UNUSED(v); |
| Q_UNUSED(description); |
| Q_UNUSED(buffer); |
| qWarning() << "UBO are not supported by OpenGL 2.0 (since OpenGL 3.1)"; |
| } |
| |
| uint GraphicsHelperGL2::uniformByteSize(const ShaderUniform &description) |
| { |
| uint rawByteSize = 0; |
| int arrayStride = qMax(description.m_arrayStride, 0); |
| int matrixStride = qMax(description.m_matrixStride, 0); |
| |
| switch (description.m_type) { |
| |
| case GL_FLOAT_VEC2: |
| case GL_INT_VEC2: |
| rawByteSize = 8; |
| break; |
| |
| case GL_FLOAT_VEC3: |
| case GL_INT_VEC3: |
| rawByteSize = 12; |
| break; |
| |
| case GL_FLOAT_VEC4: |
| case GL_INT_VEC4: |
| rawByteSize = 16; |
| break; |
| |
| case GL_FLOAT_MAT2: |
| rawByteSize = matrixStride ? 2 * matrixStride : 16; |
| break; |
| |
| case GL_FLOAT_MAT2x4: |
| rawByteSize = matrixStride ? 2 * matrixStride : 32; |
| break; |
| |
| case GL_FLOAT_MAT4x2: |
| rawByteSize = matrixStride ? 4 * matrixStride : 32; |
| break; |
| |
| case GL_FLOAT_MAT3: |
| rawByteSize = matrixStride ? 3 * matrixStride : 36; |
| break; |
| |
| case GL_FLOAT_MAT2x3: |
| rawByteSize = matrixStride ? 2 * matrixStride : 24; |
| break; |
| |
| case GL_FLOAT_MAT3x2: |
| rawByteSize = matrixStride ? 3 * matrixStride : 24; |
| break; |
| |
| case GL_FLOAT_MAT4: |
| rawByteSize = matrixStride ? 4 * matrixStride : 64; |
| break; |
| |
| case GL_FLOAT_MAT4x3: |
| rawByteSize = matrixStride ? 4 * matrixStride : 48; |
| break; |
| |
| case GL_FLOAT_MAT3x4: |
| rawByteSize = matrixStride ? 3 * matrixStride : 48; |
| break; |
| |
| case GL_BOOL: |
| rawByteSize = 1; |
| break; |
| |
| case GL_BOOL_VEC2: |
| rawByteSize = 2; |
| break; |
| |
| case GL_BOOL_VEC3: |
| rawByteSize = 3; |
| break; |
| |
| case GL_BOOL_VEC4: |
| rawByteSize = 4; |
| break; |
| |
| case GL_INT: |
| case GL_FLOAT: |
| case GL_SAMPLER_1D: |
| case GL_SAMPLER_1D_SHADOW: |
| case GL_SAMPLER_2D: |
| case GL_SAMPLER_2D_SHADOW: |
| case GL_SAMPLER_3D: |
| case GL_SAMPLER_CUBE: |
| rawByteSize = 4; |
| break; |
| |
| default: |
| Q_UNREACHABLE(); |
| } |
| |
| return arrayStride ? rawByteSize * arrayStride : rawByteSize; |
| } |
| |
| void GraphicsHelperGL2::enableClipPlane(int clipPlane) |
| { |
| m_funcs->glEnable(GL_CLIP_DISTANCE0 + clipPlane); |
| } |
| |
| void GraphicsHelperGL2::disableClipPlane(int clipPlane) |
| { |
| m_funcs->glDisable(GL_CLIP_DISTANCE0 + clipPlane); |
| } |
| |
| void GraphicsHelperGL2::setClipPlane(int clipPlane, const QVector3D &normal, float distance) |
| { |
| double plane[4]; |
| plane[0] = normal.x(); |
| plane[1] = normal.y(); |
| plane[2] = normal.z(); |
| plane[3] = distance; |
| |
| m_funcs->glClipPlane(GL_CLIP_PLANE0 + clipPlane, plane); |
| } |
| |
| GLint GraphicsHelperGL2::maxClipPlaneCount() |
| { |
| GLint max = 0; |
| m_funcs->glGetIntegerv(GL_MAX_CLIP_DISTANCES, &max); |
| return max; |
| } |
| |
| void GraphicsHelperGL2::memoryBarrier(QMemoryBarrier::Operations barriers) |
| { |
| Q_UNUSED(barriers); |
| qWarning() << "memory barrier is not supported by OpenGL 2.0 (since 4.3)"; |
| } |
| |
| void GraphicsHelperGL2::enablePrimitiveRestart(int) |
| { |
| } |
| |
| void GraphicsHelperGL2::enableVertexAttributeArray(int location) |
| { |
| m_funcs->glEnableVertexAttribArray(location); |
| } |
| |
| void GraphicsHelperGL2::disablePrimitiveRestart() |
| { |
| } |
| |
| void GraphicsHelperGL2::clearBufferf(GLint drawbuffer, const QVector4D &values) |
| { |
| Q_UNUSED(drawbuffer); |
| Q_UNUSED(values); |
| qWarning() << "glClearBuffer*() not supported by OpenGL 2.0"; |
| } |
| |
| void GraphicsHelperGL2::pointSize(bool programmable, GLfloat value) |
| { |
| m_funcs->glEnable(GL_POINT_SPRITE); |
| if (programmable) |
| m_funcs->glEnable(GL_VERTEX_PROGRAM_POINT_SIZE); |
| else |
| m_funcs->glPointSize(value); |
| } |
| |
| void GraphicsHelperGL2::enablei(GLenum cap, GLuint index) |
| { |
| Q_UNUSED(cap); |
| Q_UNUSED(index); |
| qWarning() << "glEnablei() not supported by OpenGL 2.0 (since 3.0)"; |
| } |
| |
| void GraphicsHelperGL2::disablei(GLenum cap, GLuint index) |
| { |
| Q_UNUSED(cap); |
| Q_UNUSED(index); |
| qWarning() << "glDisablei() not supported by OpenGL 2.0 (since 3.0)"; |
| } |
| |
| void GraphicsHelperGL2::setSeamlessCubemap(bool enable) |
| { |
| Q_UNUSED(enable); |
| qWarning() << "GL_TEXTURE_CUBE_MAP_SEAMLESS not supported by OpenGL 2.0 (since 3.2)"; |
| } |
| |
| QSize GraphicsHelperGL2::getRenderBufferDimensions(GLuint renderBufferId) |
| { |
| Q_UNUSED(renderBufferId); |
| qCritical() << "RenderBuffer dimensions retrival not supported on OpenGL 2.0"; |
| return QSize(0,0); |
| } |
| |
| QSize GraphicsHelperGL2::getTextureDimensions(GLuint textureId, GLenum target, uint level) |
| { |
| GLint width = 0; |
| GLint height = 0; |
| |
| m_funcs->glBindTexture(target, textureId); |
| m_funcs->glGetTexLevelParameteriv(target, level, GL_TEXTURE_WIDTH, &width); |
| m_funcs->glGetTexLevelParameteriv(target, level, GL_TEXTURE_HEIGHT, &height); |
| m_funcs->glBindTexture(target, 0); |
| |
| return QSize(width, height); |
| } |
| |
| void GraphicsHelperGL2::dispatchCompute(GLuint wx, GLuint wy, GLuint wz) |
| { |
| Q_UNUSED(wx); |
| Q_UNUSED(wy); |
| Q_UNUSED(wz); |
| qWarning() << "Compute Shaders are not supported by OpenGL 2.0 (since OpenGL 4.3)"; |
| } |
| |
| char *GraphicsHelperGL2::mapBuffer(GLenum target, GLsizeiptr size) |
| { |
| Q_UNUSED(size); |
| return static_cast<char*>(m_funcs->glMapBuffer(target, GL_READ_WRITE)); |
| } |
| |
| GLboolean GraphicsHelperGL2::unmapBuffer(GLenum target) |
| { |
| return m_funcs->glUnmapBuffer(target); |
| } |
| |
| void GraphicsHelperGL2::glUniform1fv(GLint location, GLsizei count, const GLfloat *values) |
| { |
| m_funcs->glUniform1fv(location, count, values); |
| } |
| |
| void GraphicsHelperGL2::glUniform2fv(GLint location, GLsizei count, const GLfloat *values) |
| { |
| m_funcs->glUniform2fv(location, count, values); |
| } |
| |
| void GraphicsHelperGL2::glUniform3fv(GLint location, GLsizei count, const GLfloat *values) |
| { |
| m_funcs->glUniform3fv(location, count, values); |
| } |
| |
| void GraphicsHelperGL2::glUniform4fv(GLint location, GLsizei count, const GLfloat *values) |
| { |
| m_funcs->glUniform4fv(location, count, values); |
| } |
| |
| void GraphicsHelperGL2::glUniform1iv(GLint location, GLsizei count, const GLint *values) |
| { |
| m_funcs->glUniform1iv(location, count, values); |
| } |
| |
| void GraphicsHelperGL2::glUniform2iv(GLint location, GLsizei count, const GLint *values) |
| { |
| m_funcs->glUniform2iv(location, count, values); |
| } |
| |
| void GraphicsHelperGL2::glUniform3iv(GLint location, GLsizei count, const GLint *values) |
| { |
| m_funcs->glUniform3iv(location, count, values); |
| } |
| |
| void GraphicsHelperGL2::glUniform4iv(GLint location, GLsizei count, const GLint *values) |
| { |
| m_funcs->glUniform4iv(location, count, values); |
| } |
| |
| void GraphicsHelperGL2::glUniform1uiv(GLint , GLsizei , const GLuint *) |
| { |
| qWarning() << "glUniform1uiv not supported by GL 2"; |
| } |
| |
| void GraphicsHelperGL2::glUniform2uiv(GLint , GLsizei , const GLuint *) |
| { |
| qWarning() << "glUniform2uiv not supported by GL 2"; |
| } |
| |
| void GraphicsHelperGL2::glUniform3uiv(GLint , GLsizei , const GLuint *) |
| { |
| qWarning() << "glUniform3uiv not supported by GL 2"; |
| } |
| |
| void GraphicsHelperGL2::glUniform4uiv(GLint , GLsizei , const GLuint *) |
| { |
| qWarning() << "glUniform4uiv not supported by GL 2"; |
| } |
| |
| void GraphicsHelperGL2::glUniformMatrix2fv(GLint location, GLsizei count, const GLfloat *values) |
| { |
| m_funcs->glUniformMatrix2fv(location, count, false, values); |
| } |
| |
| void GraphicsHelperGL2::glUniformMatrix3fv(GLint location, GLsizei count, const GLfloat *values) |
| { |
| m_funcs->glUniformMatrix3fv(location, count, false, values); |
| } |
| |
| void GraphicsHelperGL2::glUniformMatrix4fv(GLint location, GLsizei count, const GLfloat *values) |
| { |
| m_funcs->glUniformMatrix4fv(location, count, false, values); |
| } |
| |
| void GraphicsHelperGL2::glUniformMatrix2x3fv(GLint , GLsizei , const GLfloat *) |
| { |
| qWarning() << "glUniformMatrix2x3fv not supported by GL 2"; |
| } |
| |
| void GraphicsHelperGL2::glUniformMatrix3x2fv(GLint , GLsizei , const GLfloat *) |
| { |
| qWarning() << "glUniformMatrix3x2fv not supported by GL 2"; |
| } |
| |
| void GraphicsHelperGL2::glUniformMatrix2x4fv(GLint , GLsizei , const GLfloat *) |
| { |
| qWarning() << "glUniformMatrix2x4fv not supported by GL 2"; |
| } |
| |
| void GraphicsHelperGL2::glUniformMatrix4x2fv(GLint , GLsizei , const GLfloat *) |
| { |
| qWarning() << "glUniformMatrix4x2fv not supported by GL 2"; |
| } |
| |
| void GraphicsHelperGL2::glUniformMatrix3x4fv(GLint , GLsizei , const GLfloat *) |
| { |
| qWarning() << "glUniformMatrix3x4fv not supported by GL 2"; |
| } |
| |
| void GraphicsHelperGL2::glUniformMatrix4x3fv(GLint , GLsizei , const GLfloat *) |
| { |
| qWarning() << "glUniformMatrix4x3fv not supported by GL 2"; |
| } |
| |
| UniformType GraphicsHelperGL2::uniformTypeFromGLType(GLenum type) |
| { |
| switch (type) { |
| case GL_FLOAT: |
| return UniformType::Float; |
| case GL_FLOAT_VEC2: |
| return UniformType::Vec2; |
| case GL_FLOAT_VEC3: |
| return UniformType::Vec3; |
| case GL_FLOAT_VEC4: |
| return UniformType::Vec4; |
| case GL_FLOAT_MAT2: |
| return UniformType::Mat2; |
| case GL_FLOAT_MAT3: |
| return UniformType::Mat3; |
| case GL_FLOAT_MAT4: |
| return UniformType::Mat4; |
| case GL_INT: |
| return UniformType::Int; |
| case GL_INT_VEC2: |
| return UniformType::IVec2; |
| case GL_INT_VEC3: |
| return UniformType::IVec3; |
| case GL_INT_VEC4: |
| return UniformType::IVec4; |
| case GL_BOOL: |
| return UniformType::Bool; |
| case GL_BOOL_VEC2: |
| return UniformType::BVec2; |
| case GL_BOOL_VEC3: |
| return UniformType::BVec3; |
| case GL_BOOL_VEC4: |
| return UniformType::BVec4; |
| |
| case GL_SAMPLER_1D: |
| case GL_SAMPLER_1D_SHADOW: |
| case GL_SAMPLER_2D: |
| case GL_SAMPLER_2D_SHADOW: |
| case GL_SAMPLER_CUBE: |
| case GL_SAMPLER_3D: |
| return UniformType::Sampler; |
| |
| default: |
| Q_UNREACHABLE(); |
| return UniformType::Float; |
| } |
| } |
| |
| void GraphicsHelperGL2::blitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter) |
| { |
| Q_UNUSED(srcX0); |
| Q_UNUSED(srcX1); |
| Q_UNUSED(srcY0); |
| Q_UNUSED(srcY1); |
| Q_UNUSED(dstX0); |
| Q_UNUSED(dstX1); |
| Q_UNUSED(dstY0); |
| Q_UNUSED(dstY1); |
| Q_UNUSED(mask); |
| Q_UNUSED(filter); |
| qWarning() << "Framebuffer blits are not supported by ES 2.0 (since ES 3.1)"; |
| } |
| |
| } // namespace OpenGL |
| } // namespace Render |
| } // namespace Qt3DRender |
| |
| QT_END_NAMESPACE |
| |
| #endif // !QT_OPENGL_ES_2 |
