revolver

Unnamed repository; edit this file 'description' to name the repository.
Log | Files | Refs

util_tex_load.c (1269B)

      1 //////////////////////////////////////////////////////////////////
      2 // util_tex_load.c
      3 
      4 #define STB_IMAGE_IMPLEMENTATION
      5 #define STB_IMAGE_STATIC
      6 #include "../external/stb_image.h"
      7 
      8 RV_GLOBAL rv_texture_t* rv_tex_load_from_file(rv_arena* arena, rv_str8 filename, bool32 vertical_flip_on_load)
      9 {
     10     rv_temp_arena scratch = rv_scratch_begin(0, 0);
     11     rv_str8 f = rv_read_file(scratch.arena, filename);
     12     rv_texture_t* res = rv_tex_load_from_memory(arena, f, vertical_flip_on_load);
     13     rv_scratch_end(scratch);
     14 
     15     return res;
     16 }
     17 
     18 RV_GLOBAL rv_texture_t* rv_tex_load_from_memory(rv_arena* arena, rv_str8 memory, bool32 vertical_flip_on_load)
     19 {
     20     rv_texture_t* res = rv_push(arena, rv_texture_t);
     21 
     22     s32 num_comps, width, height;
     23     stbi_set_flip_vertically_on_load(vertical_flip_on_load);
     24     void* data =  stbi_load_from_memory((const stbi_uc*)memory.str, memory.len, &width, &height, &num_comps, STBI_rgb_alpha);
     25 
     26     if (data) {
     27         res->size = rv_v2(width, height);
     28         res->data = rv_mem_copy(rv_arena_push(arena, 4 * width * height, 8), data, 4 * width * height);
     29         stbi_image_free(data);
     30     } else {
     31         // set default texture...
     32         rv_unreachable();
     33         rv_get_default_texture(&res->data, &res->size);
     34     }
     35 
     36     return res;
     37 }