76 lines
4.3 KiB
C
76 lines
4.3 KiB
C
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#pragma once
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#include "element_traits.h"
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#include "lib_begin.h"
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namespace cgv {
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namespace render {
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class vertex_buffer;
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/** a shader program combines several shader code fragments
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to a complete definition of the shading pipeline. */
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class CGV_API attribute_array_binding : public attribute_array_binding_base
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{
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public:
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/**@name static interface is used to access global attribute arrays of context*/
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//@{
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/// check whether an attribute array is enabled
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static bool is_global_array_enabled(context& ctx, int loc);
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/// enable attribute array of given location
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static bool enable_global_array(context& ctx, int loc);
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/// disable attribute array of given location
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static bool disable_global_array(context& ctx, int loc);
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/// point array of vertex attribute at location \c loc to vertex buffer array \c array stored in CPU memory; in case of success also enable vertex attribute array
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static bool set_global_attribute_array(context& ctx, int loc, const vertex_buffer& vbo, type_descriptor td, size_t size, size_t offset, size_t stride = 0);
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/// point array of vertex attribute at location \c loc to array \c array stored in CPU memory; in case of success also enable vertex attribute array
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template <typename T>
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static bool set_global_attribute_array(context& ctx, int loc, const T& array) {
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return ctx.set_attribute_array_void(0, loc, array_descriptor_traits<T>::get_type_descriptor(array), 0, array_descriptor_traits<T>::get_address(array), array_descriptor_traits<T>::get_nr_elements(array));
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}
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/// point array of vertex attribute at location \c loc to array with \c nr_elements elements pointed to by \c array_ptr in CPU memory; in case of success also enable vertex attribute array
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template <typename T>
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static bool set_global_attribute_array(context& ctx, int loc, const T* array_ptr, unsigned nr_elements, unsigned stride = 0) {
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return ctx.set_attribute_array_void(0, loc, element_descriptor_traits<T>::get_type_descriptor(*array_ptr), 0, array_ptr, nr_elements, stride);
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}
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/// point array of vertex attribute at location \c loc to elements of given type in vertex buffer object at given offset spaced with given stride; in case of success also enable vertex attribute array
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static bool set_global_attribute_array(context& ctx, int loc, type_descriptor element_type, const vertex_buffer& vbo, size_t offset_in_bytes, size_t nr_elements, size_t stride_in_bytes = 0);
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//@}
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/// default constructor does not create attribute array binding
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attribute_array_binding();
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/// destruct attribute array binding object
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~attribute_array_binding();
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/// create the attribute array binding object
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bool create(context& ctx);
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/// destruct attribute array binding object
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void destruct(context& ctx);
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/// enable whole the attribute array binding object
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bool enable(context& ctx);
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/// disable whole attribute array binding object
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bool disable(context& ctx);
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/// enable array for vertex attribute at location \c loc
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bool enable_array(context& ctx, int loc);
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/// check if array of vertex attribute at location \c loc is enabled
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bool is_array_enabled(context& ctx, int loc) const;
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/// disable array for attribute at location \c loc
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bool disable_array(context& ctx, int loc);
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/// set vertex attribute location to given array and enable array
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template <typename T>
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bool set_attribute_array(context& ctx, int loc, const T& array) {
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return ctx.set_attribute_array_void(this, loc, array_descriptor_traits<T>::get_type_descriptor(array), 0, array_descriptor_traits<T>::get_address(array), array_descriptor_traits<T>::get_nr_elements(array));
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}
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/// set a vertex attribute to a single value or an array of values through the cgv::math::vec or std::vector classes.
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template <typename T>
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bool set_attribute_array(context& ctx, int loc, const T* value_ptr, unsigned nr_elements, unsigned stride = 0) {
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return ctx.set_attribute_array_void(this, loc, element_descriptor_traits<T>::get_type_descriptor(*value_ptr), 0, value_ptr, nr_elements, stride);
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}
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/// point array of vertex attribute at location \c loc to elements of given type in vertex buffer object at given offset spaced with given stride; in case of success also enable vertex attribute array
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bool set_attribute_array(context& ctx, int loc, type_descriptor element_type, const vertex_buffer& vbo, size_t offset_in_bytes, size_t nr_elements, size_t stride_in_bytes = 0);
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};
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}
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}
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#include <cgv/config/lib_end.h>
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