diff options
Diffstat (limited to 'src/opengl/qglshaderprogram.cpp')
| -rw-r--r-- | src/opengl/qglshaderprogram.cpp | 225 |
1 files changed, 220 insertions, 5 deletions
diff --git a/src/opengl/qglshaderprogram.cpp b/src/opengl/qglshaderprogram.cpp index 5e2f1f5..80b4872 100644 --- a/src/opengl/qglshaderprogram.cpp +++ b/src/opengl/qglshaderprogram.cpp @@ -50,7 +50,7 @@ QT_BEGIN_NAMESPACE -#if !defined(QT_OPENGL_ES_1_CL) && !defined(QT_OPENGL_ES_1) +#if !defined(QT_OPENGL_ES_1) /*! \class QGLShaderProgram @@ -106,6 +106,19 @@ QT_BEGIN_NAMESPACE \snippet doc/src/snippets/code/src_opengl_qglshaderprogram.cpp 2 + \section1 Binary shaders and programs + + Binary shaders may be specified using \c{glShaderBinary()} on + the return value from QGLShader::shaderId(). The QGLShader instance + containing the binary can then be added to the shader program with + addShader() and linked in the usual fashion with link(). + + Binary programs may be specified using \c{glProgramBinaryOES()} + on the return value from programId(). Then the application should + call link(), which will notice that the program has already been + specified and linked, allowing other operations to be performed + on the shader program. + \sa QGLShader */ @@ -632,8 +645,6 @@ bool QGLShaderProgram::addShader(QGLShader *shader) qWarning("QGLShaderProgram::addShader: Program and shader are not associated with same context."); return false; } - if (!shader->d_func()->compiled) - return false; if (!shader->d_func()->shaderGuard.id()) return false; glAttachShader(d->programGuard.id(), shader->d_func()->shaderGuard.id()); @@ -820,8 +831,20 @@ bool QGLShaderProgram::link() GLuint program = d->programGuard.id(); if (!program) return false; + GLint value; + if (d->shaders.isEmpty()) { + // If there are no explicit shaders, then it is possible that the + // application added a program binary with glProgramBinaryOES(), + // or otherwise populated the shaders itself. Check to see if the + // program is already linked and bail out if so. + value = 0; + glGetProgramiv(program, GL_LINK_STATUS, &value); + d->linked = (value != 0); + if (d->linked) + return true; + } glLinkProgram(program); - GLint value = 0; + value = 0; glGetProgramiv(program, GL_LINK_STATUS, &value); d->linked = (value != 0); value = 0; @@ -928,6 +951,15 @@ void QGLShaderProgram::release() GLuint QGLShaderProgram::programId() const { Q_D(const QGLShaderProgram); + GLuint id = d->programGuard.id(); + if (id) + return id; + + // Create the identifier if we don't have one yet. This is for + // applications that want to create the attached shader configuration + // themselves, particularly those using program binaries. + if (!const_cast<QGLShaderProgram *>(this)->init()) + return 0; return d->programGuard.id(); } @@ -1394,6 +1426,38 @@ void QGLShaderProgram::setAttributeArray } /*! + Sets an array of vertex \a values on the attribute at \a location + in this shader program. The \a stride indicates the number of bytes + between vertices. A default \a stride value of zero indicates that + the vertices are densely packed in \a values. + + The \a type indicates the type of elements in the \a values array, + usually \c{GL_FLOAT}, \c{GL_UNSIGNED_BYTE}, etc. The \a tupleSize + indicates the number of components per vertex: 1, 2, 3, or 4. + + The array will become active when enableAttributeArray() is called + on the \a location. Otherwise the value specified with + setAttributeValue() for \a location will be used. + + The setAttributeBuffer() function can be used to set the attribute + array to an offset within a vertex buffer. + + \sa setAttributeValue(), setUniformValue(), enableAttributeArray() + \sa disableAttributeArray(), setAttributeBuffer() + \since 4.7 +*/ +void QGLShaderProgram::setAttributeArray + (int location, GLenum type, const void *values, int tupleSize, int stride) +{ + Q_D(QGLShaderProgram); + Q_UNUSED(d); + if (location != -1) { + glVertexAttribPointer(location, tupleSize, type, GL_FALSE, + stride, values); + } +} + +/*! \overload Sets an array of vertex \a values on the attribute called \a name @@ -1479,6 +1543,90 @@ void QGLShaderProgram::setAttributeArray } /*! + \overload + + Sets an array of vertex \a values on the attribute called \a name + in this shader program. The \a stride indicates the number of bytes + between vertices. A default \a stride value of zero indicates that + the vertices are densely packed in \a values. + + The \a type indicates the type of elements in the \a values array, + usually \c{GL_FLOAT}, \c{GL_UNSIGNED_BYTE}, etc. The \a tupleSize + indicates the number of components per vertex: 1, 2, 3, or 4. + + The array will become active when enableAttributeArray() is called + on the \a location. Otherwise the value specified with + setAttributeValue() for \a location will be used. + + The setAttributeBuffer() function can be used to set the attribute + array to an offset within a vertex buffer. + + \sa setAttributeValue(), setUniformValue(), enableAttributeArray() + \sa disableAttributeArray(), setAttributeBuffer() + \since 4.7 +*/ +void QGLShaderProgram::setAttributeArray + (const char *name, GLenum type, const void *values, int tupleSize, int stride) +{ + setAttributeArray(attributeLocation(name), type, values, tupleSize, stride); +} + +/*! + Sets an array of vertex values on the attribute at \a location + in this shader program, starting at a specific \a offset in the + currently bound vertex buffer. The \a stride indicates the number + of bytes between vertices. A default \a stride value of zero + indicates that the vertices are densely packed in \a values. + + The \a type indicates the type of elements in the \a values array, + usually \c{GL_FLOAT}, \c{GL_UNSIGNED_BYTE}, etc. The \a tupleSize + indicates the number of components per vertex: 1, 2, 3, or 4. + + The array will become active when enableAttributeArray() is called + on the \a location. Otherwise the value specified with + setAttributeValue() for \a location will be used. + + \sa setAttributeArray() + \since 4.7 +*/ +void QGLShaderProgram::setAttributeBuffer + (int location, GLenum type, int offset, int tupleSize, int stride) +{ + Q_D(QGLShaderProgram); + Q_UNUSED(d); + if (location != -1) { + glVertexAttribPointer(location, tupleSize, type, GL_FALSE, stride, + reinterpret_cast<const void *>(offset)); + } +} + +/*! + \overload + + Sets an array of vertex values on the attribute called \a name + in this shader program, starting at a specific \a offset in the + currently bound vertex buffer. The \a stride indicates the number + of bytes between vertices. A default \a stride value of zero + indicates that the vertices are densely packed in \a values. + + The \a type indicates the type of elements in the \a values array, + usually \c{GL_FLOAT}, \c{GL_UNSIGNED_BYTE}, etc. The \a tupleSize + indicates the number of components per vertex: 1, 2, 3, or 4. + + The array will become active when enableAttributeArray() is called + on the \a location. Otherwise the value specified with + setAttributeValue() for \a location will be used. + + \sa setAttributeArray() + \since 4.7 +*/ +void QGLShaderProgram::setAttributeBuffer + (const char *name, GLenum type, int offset, int tupleSize, int stride) +{ + setAttributeBuffer(attributeLocation(name), type, offset, tupleSize, stride); +} + +/*! Enables the vertex array at \a location in this shader program so that the value set by setAttributeArray() on \a location will be used by the shader program. @@ -2275,6 +2423,42 @@ void QGLShaderProgram::setUniformValue(const char *name, const QMatrix4x4& value \overload Sets the uniform variable at \a location in the current context + to a 2x2 matrix \a value. The matrix elements must be specified + in column-major order. + + \sa setAttributeValue() + \since 4.7 +*/ +void QGLShaderProgram::setUniformValue(int location, const GLfloat value[2][2]) +{ + Q_D(QGLShaderProgram); + Q_UNUSED(d); + if (location != -1) + glUniformMatrix2fv(location, 1, GL_FALSE, value[0]); +} + +/*! + \overload + + Sets the uniform variable at \a location in the current context + to a 3x3 matrix \a value. The matrix elements must be specified + in column-major order. + + \sa setAttributeValue() + \since 4.7 +*/ +void QGLShaderProgram::setUniformValue(int location, const GLfloat value[3][3]) +{ + Q_D(QGLShaderProgram); + Q_UNUSED(d); + if (location != -1) + glUniformMatrix3fv(location, 1, GL_FALSE, value[0]); +} + +/*! + \overload + + Sets the uniform variable at \a location in the current context to a 4x4 matrix \a value. The matrix elements must be specified in column-major order. @@ -2288,6 +2472,37 @@ void QGLShaderProgram::setUniformValue(int location, const GLfloat value[4][4]) glUniformMatrix4fv(location, 1, GL_FALSE, value[0]); } + +/*! + \overload + + Sets the uniform variable called \a name in the current context + to a 2x2 matrix \a value. The matrix elements must be specified + in column-major order. + + \sa setAttributeValue() + \since 4.7 +*/ +void QGLShaderProgram::setUniformValue(const char *name, const GLfloat value[2][2]) +{ + setUniformValue(uniformLocation(name), value); +} + +/*! + \overload + + Sets the uniform variable called \a name in the current context + to a 3x3 matrix \a value. The matrix elements must be specified + in column-major order. + + \sa setAttributeValue() + \since 4.7 +*/ +void QGLShaderProgram::setUniformValue(const char *name, const GLfloat value[3][3]) +{ + setUniformValue(uniformLocation(name), value); +} + /*! \overload @@ -2911,6 +3126,6 @@ void QGLShaderProgram::setUniformValueArray(const char *name, const QMacCompatGL } #endif -#endif // !defined(QT_OPENGL_ES_1_CL) && !defined(QT_OPENGL_ES_1) +#endif // !defined(QT_OPENGL_ES_1) QT_END_NAMESPACE |