\inmodule QtGui
- Since
- 6.6
Describes a vertex input binding.
Specifies the stride (in bytes, must be a multiple of 4), the classification and optionally the instance step rate.
As an example, assume a vertex shader with the following inputs:
\badcode layout(location = 0) in vec4 position; layout(location = 1) in vec2 texcoord;
Now let's assume also that 3 component vertex positions
{ 3 * sizeof(float) },
{ 2 * sizeof(float) }
});
Only the stride is interesting here since instancing is not used. The binding number is given by the index of the QRhiVertexInputBinding element in the bindings vector of the QRhiVertexInputLayout.
Once a graphics pipeline with this vertex input layout is bound, the vertex inputs could be set up like the following for drawing a cube with 36 vertices, assuming we have a single buffer with first the positions and then the texture coordinates:
{ cubeBuf, 0 },
{ cubeBuf, 36 * 3 * sizeof(float) }
};
cb->setVertexInput(0, 2, vbufBindings);
QPair< QRhiBuffer *, quint32 > VertexInput
Synonym for QPair<QRhiBuffer *, quint32>.
SSL_CTX int(* cb)(SSL *ssl, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg)
Note how the index defined by {startBinding + i}, where i is the index in the second argument of \l{QRhiCommandBuffer::setVertexInput()}{setVertexInput()}, matches the index of the corresponding entry in the bindings vector of the QRhiVertexInputLayout.
- Note
- the stride must always be a multiple of 4.
-
This is a RHI API with limited compatibility guarantees, see \l QRhi for details.
- See also
- QRhiCommandBuffer::setVertexInput()
Definition at line 178 of file qrhi.h.
Collaboration diagram for QRhiVertexInputBinding:
1.10.0