QRhiScissor Class
Specifies a scissor rectangle. More...
| Header: | #include <QRhiScissor> |
| CMake: | find_package(Qt6 REQUIRED COMPONENTS Gui) target_link_libraries(mytarget PRIVATE Qt6::Gui) |
| qmake: | QT += gui |
| Since: | Qt 6.6 |
Public Functions
| QRhiScissor() | |
| QRhiScissor(int x, int y, int w, int h) | |
| std::array<int, 4> | scissor() const |
| void | setScissor(int x, int y, int w, int h) |
Related Non-Members
| size_t | qHash(const QRhiScissor &v, size_t seed = 0) |
| bool | operator!=(const QRhiScissor &a, const QRhiScissor &b) |
| bool | operator==(const QRhiScissor &a, const QRhiScissor &b) |
Detailed Description
Used with QRhiCommandBuffer::setScissor(). Setting a scissor rectangle is only possible with a QRhiGraphicsPipeline that has QRhiGraphicsPipeline::UsesScissor set.
QRhi assumes OpenGL-style scissor coordinates, meaning x and y are bottom-left. Negative width or height are not allowed. However, apart from that, the flexible OpenGL semantics apply: negative x and y, partially out of bounds rectangles, etc. will be handled gracefully, clamping as appropriate. Therefore, any rendering logic targeting OpenGL can feed scissor rectangles into QRhiScissor as-is, without any adaptation.
Note: This is a RHI API with limited compatibility guarantees, see QRhi for details.
See also QRhiCommandBuffer::setScissor() and QRhiViewport.
Member Function Documentation
[constexpr noexcept] QRhiScissor::QRhiScissor()
Constructs an empty scissor.
QRhiScissor::QRhiScissor(int x, int y, int w, int h)
Constructs a scissor with the rectangle specified by x, y, w, and h.
Note: x and y are assumed to be the bottom-left position. Negative w or h are not allowed, such scissor rectangles will be ignored by QRhiCommandBuffer. Other than that, the flexible OpenGL semantics apply: negative x and y, partially out of bounds rectangles, etc. will be handled gracefully, clamping as appropriate.
std::array<int, 4> QRhiScissor::scissor() const
Returns the scissor position and size.
See also setScissor().
void QRhiScissor::setScissor(int x, int y, int w, int h)
Sets the scissor position and size to x, y, w, h.
Note: The position is always expected to be specified in a coordinate system that has its origin in the bottom-left corner, like OpenGL.
See also scissor().
Related Non-Members
[noexcept] size_t qHash(const QRhiScissor &v, size_t seed = 0)
Returns the hash value for v, using seed to seed the calculation.
[noexcept] bool operator!=(const QRhiScissor &a, const QRhiScissor &b)
Returns false if the values in the two QRhiScissor objects a and b are equal; otherwise returns true.
[noexcept] bool operator==(const QRhiScissor &a, const QRhiScissor &b)
Returns true if the values in the two QRhiScissor objects a and b are equal.