diff options
Diffstat (limited to 'src/texture.c')
| -rw-r--r-- | src/texture.c | 179 |
1 files changed, 89 insertions, 90 deletions
diff --git a/src/texture.c b/src/texture.c index e74f6be..a91b355 100644 --- a/src/texture.c +++ b/src/texture.c @@ -6,98 +6,97 @@ /* By: charles <charles.cabergs@gmail.com> +#+ +:+ +#+ */ /* +#+#+#+#+#+ +#+ */ /* Created: 2020/05/11 14:27:34 by charles #+# #+# */ -/* Updated: 2020/05/14 14:01:38 by charles ### ########.fr */ +/* Updated: 2020/05/14 16:37:42 by charles ### ########.fr */ /* */ /* ************************************************************************** */ #include "scop.h" -/* typedef struct __attribute__((__packed__)) */ -/* { */ -/* uint8_t signature[2]; */ -/* uint32_t file_size; */ -/* uint32_t reserved; */ -/* uint32_t img_data_offset; */ -/* } t_bmp_file_header; */ -/* */ -/* typedef struct __attribute__((__packed__)) */ -/* { */ -/* uint32_t header_size; */ -/* uint32_t width; */ -/* uint32_t height; */ -/* uint16_t color_planes; */ -/* uint16_t depth; */ -/* uint32_t compression; */ -/* uint32_t image_size; */ -/* uint32_t horizontal_res; */ -/* uint32_t vertical_res; */ -/* uint32_t color_table_len; */ -/* uint32_t color_count; */ -/* } t_bmp_info_header; */ -/* */ -/* uint8_t *st_read_bmp(char *filepath, size_t *width, size_t *height) */ -/* { */ -/* uint8_t *data; */ -/* t_bmp_file_header file_header; */ -/* t_bmp_info_header info_header; */ -/* int fd; */ -/* */ -/* fd = open(filepath, O_RDONLY); */ -/* read(fd, &file_header, sizeof(t_bmp_file_header)); */ -/* if (file_header.signature[0] != 'B' || file_header.signature[1] != 'M') */ -/* { */ -/* close(fd); */ -/* return (NULL); */ -/* } */ -/* read(fd, &info_header, sizeof(t_bmp_info_header)); */ -/* if ((data = malloc(info_header.image_size)) == NULL) */ -/* { */ -/* close(fd); */ -/* return (NULL); */ -/* } */ -/* *width = info_header.width; */ -/* *height = info_header.height; */ -/* read(fd, data, info_header.image_size); // padding */ -/* close(fd); */ -/* return (data); */ -/* } */ -/* */ -/* unsigned int texture_new(char *filepath) */ -/* { */ -/* uint8_t *data; */ -/* unsigned int texture; */ -/* size_t width; */ -/* size_t height; */ -/* */ -/* if ((data = st_read_bmp(filepath, &width, &height)) == NULL) */ -/* return (0); */ -/* GL_CALL(glGenTextures(1, &texture)); */ -/* GL_CALL(glBindTexture(GL_TEXTURE_2D, texture)); */ -/* GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)); */ -/* GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)); */ -/* GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)); */ -/* GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)); */ -/* GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data)); */ -/* free(data); */ -/* return (texture); */ -/* } */ -/* */ -/* float *texture_coord_create(float *vertices, size_t vertices_len) */ -/* { */ -/* t_ftmvec3 min; */ -/* t_ftmvec3 max; */ -/* float *coords; */ -/* size_t i; */ -/* */ -/* if ((coords = malloc(sizeof(float) * (vertices_len * 2))) == NULL) */ -/* return (NULL); */ -/* st_find_boundary(vertices, vertices_len, &min, &max); */ -/* i = 0; */ -/* while (i < vertices_len) */ -/* { */ -/* coords[i * 2 + 0] = (vertices[i * 4 + 0] - min.x) * (1.0 / (max.x - min.x)); */ -/* coords[i * 2 + 1] = (vertices[i * 4 + 1] - min.y) * (1.0 / (max.y - min.y)); */ -/* i++; */ -/* } */ -/* return (coords); */ -/* } */ +typedef struct __attribute__((__packed__)) +{ + uint8_t signature[2]; + uint32_t file_size; + uint32_t reserved; + uint32_t img_data_offset; +} t_bmp_file_header; + +typedef struct __attribute__((__packed__)) +{ + uint32_t header_size; + uint32_t width; + uint32_t height; + uint16_t color_planes; + uint16_t depth; + uint32_t compression; + uint32_t image_size; + uint32_t horizontal_res; + uint32_t vertical_res; + uint32_t color_table_len; + uint32_t color_count; +} t_bmp_info_header; + +uint8_t *st_read_bmp(char *filepath, size_t *width, size_t *height) +{ + uint8_t *data; + t_bmp_file_header file_header; + t_bmp_info_header info_header; + int fd; + + fd = open(filepath, O_RDONLY); + read(fd, &file_header, sizeof(t_bmp_file_header)); + if (file_header.signature[0] != 'B' || file_header.signature[1] != 'M') + { + close(fd); + return (NULL); + } + read(fd, &info_header, sizeof(t_bmp_info_header)); + if ((data = malloc(info_header.image_size)) == NULL) + { + close(fd); + return (NULL); + } + *width = info_header.width; + *height = info_header.height; + read(fd, data, info_header.image_size); // padding + close(fd); + return (data); +} + +unsigned int texture_create(char *filepath) +{ + uint8_t *data; + unsigned int texture; + size_t width; + size_t height; + + if ((data = st_read_bmp(filepath, &width, &height)) == NULL) + return (0); + GL_CALL(glGenTextures(1, &texture)); + GL_CALL(glBindTexture(GL_TEXTURE_2D, texture)); + GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)); + GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)); + GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)); + GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)); + GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data)); + free(data); + return (texture); +} + +void texture_coord_init(float *vertices, size_t vertices_num) +{ + t_ftmvec3 min; + t_ftmvec3 max; + size_t i; + size_t index; + + helper_find_boundary(vertices, vertices_num, &min, &max); + i = 0; + while (i < vertices_num) + { + index = i + VERTEX_TEX_COORD_OFFSET; + vertices[index] = 0.0; //(vertices[index] - min.x) * (1.0 / (max.x - min.x)); + index++; + vertices[index] = 1.0; //(vertices[index] - min.y) * (1.0 / (max.y - min.y)); + i += VERTEX_COUNT; + } +} |