al_draw_prim - Online Linux Manual PageSection : 3
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Source : Allegro reference manual
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NAMEal_draw_prim − Allegro 5 API

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SYNOPSIS #include <allegro5/allegro_primitives.h> int al_draw_prim(const void* vtxs, const ALLEGRO_VERTEX_DECL* decl,    ALLEGRO_BITMAP* texture, int start, int end, int type)

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DESCRIPTIONDraws a subset of the passed vertex array. Parameters: • texture − Texture to use, pass NULL to use only color shaded primitves • vtxs − Pointer to an array of vertices • decl − Pointer to a [vertex declaration]al_create_vertex_decl(3). If set to NULL, the vertices are assumed to be of the ALLEGRO_VERTEX(3) type • start − Start index of the subset of the vertex array to draw • end − One past the last index of the subset of the vertex array to draw • type − A member of the ALLEGRO_PRIM_TYPE(3) enumeration, specifying what kind of primitive to draw Returns: Number of primitives drawn For example to draw a textured triangle you could use: ALLEGRO_COLOR white = al_map_rgb_f(1, 1, 1); ALLEGRO_VERTEX v[] = {    {.x = 128, .y = 0, .z = 0, .color = white, .u = 128, .v = 0},    {.x = 0, .y = 256, .z = 0, .color = white, .u = 0, .v = 256},    {.x = 256, .y = 256, .z = 0, .color = white, .u = 256, .v = 256}}; al_draw_prim(v, NULL, texture, 0, 3, ALLEGRO_PRIM_TRIANGLE_LIST);

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SEE ALSOALLEGRO_VERTEX(3), ALLEGRO_PRIM_TYPE(3), ALLEGRO_VERTEX_DECL(3), al_draw_indexed_prim(3) 0

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