GxmVertexFormat class
Vertex layout description of the sceGxm backend (aliased as RHI::VertexFormat).
Records the set of vertex attributes (component count, type, stride, offset and source buffer) the way the OpenGL backend does, so the pipeline's attribute setup code compiles unchanged. The backend translates the recorded layout into the SceGxmVertexAttribute / SceGxmVertexStream arrays that a patched SceGxmVertexProgram is created from (see GxmShaderProgram::
Public types
- class Attribute
- A single vertex attribute within a vertex format.
Public static variables
-
static std::
uint32_t MaxAttributes constexpr - The maximum number of vertex attributes.
Constructors, destructors, conversion operators
Public functions
-
auto GetAttributeCount() const -> std::
uint32_t - auto GetIbo() const -> const GxmBufferObject*
- void SetIbo(const GxmBufferObject* ibo)
- void Define()
- Applies the vertex format (no-op; the recorded layout is consumed at input-layout creation).
- void Reset()
- Disables all attributes and clears the index buffer.
-
auto CalculateFingerprint() const -> std::
uint64_t - Returns a value identifying this layout, used as the key of the patched-vertex-program cache.
-
auto operator[](std::
uint32_t index) -> Attribute& -
auto operator[](std::
uint32_t index) const -> const Attribute& - auto operator==(const GxmVertexFormat& other) const -> bool
- auto operator!=(const GxmVertexFormat& other) const -> bool
Function documentation
std::
Returns a value identifying this layout, used as the key of the patched-vertex-program cache.
A patched SceGxmVertexProgram bakes the layout in, so it may only be reused for an identical one. The digest covers everything that ends up in the SceGxmVertexAttribute / SceGxmVertexStream arrays - which attribute slots are enabled, and each one's component count, component type, normalization, within-vertex offset and stream stride. The source buffer and its base offset are deliberately left out: they are passed to the draw call as an address, not compiled into the program, so two draws out of different ring-buffer regions share one patched program.