From 140666204191b218b72274d8d14921c89a6631fd Mon Sep 17 00:00:00 2001 From: sanine-a Date: Sun, 29 Nov 2020 15:16:42 -0600 Subject: refactor: eliminate src subdirectories for honey files --- src/texture/texture.c | 268 -------------------------------------------------- 1 file changed, 268 deletions(-) delete mode 100644 src/texture/texture.c (limited to 'src/texture/texture.c') diff --git a/src/texture/texture.c b/src/texture/texture.c deleted file mode 100644 index 37e38e9..0000000 --- a/src/texture/texture.c +++ /dev/null @@ -1,268 +0,0 @@ -#include "texture.h" - -static int honey_lua_texture_new(lua_State* L) -{ - honey_texture* texture = lua_newuserdata(L, sizeof(honey_texture)); - return 1; -} - -static int honey_lua_texture_create(lua_State* L) -{ - honey_texture* texture; - int width, height; - char* type; - honey_lua_parse_arguments(L, 4, - HONEY_USERDATA, &texture, - HONEY_STRING, &type, - HONEY_INTEGER, &width, - HONEY_INTEGER, &height); - - if (strcmp(type, "greyscale") == 0) - honey_texture_new_greyscale(texture, width, height, NULL); - else if (strcmp(type, "rgb") == 0) - honey_texture_new_rgb(texture, width, height, NULL); - else if (strcmp(type, "rgba") == 0) - honey_texture_new_rgba(texture, width, height, NULL); - else if (strcmp(type, "depth") == 0) - honey_texture_new_depth(texture, width, height, NULL); - else { - char* error; - honey_format_string(&error, - "unknown texture type '%s'", - type); - lua_pushstring(L, error); - free(error); - lua_error(L); - } - return 0; -} - -static int honey_lua_texture_load(lua_State* L) -{ - honey_texture* texture; - char* texture_path; - honey_lua_parse_arguments(L, 3, - HONEY_USERDATA, &texture, - HONEY_STRING, &texture_path); - enum honey_texture_result result = honey_texture_load(texture, texture_path); - if (result != TEXTURE_OK) { - char* error; - honey_format_string(&error, - "failed to load '%s'", - texture_path); - lua_pushstring(L, error); - free(error); - lua_error(L); - } - - return 0; -} - -static int honey_lua_texture_use(lua_State* L) -{ - honey_texture* texture; - int texture_unit; - honey_lua_parse_arguments(L, 2, - HONEY_USERDATA, &texture, - HONEY_INTEGER, &texture_unit); - honey_texture_use(*texture, texture_unit); - return 0; -} - -static int honey_lua_framebuffer_new(lua_State* L) -{ - honey_texture* draw, *depth; - if (lua_isuserdata(L, 1)) - draw = lua_touserdata(L, 1); - else - draw = NULL; - - if (lua_isuserdata(L, 2)) - depth = lua_touserdata(L, 2); - else - depth = NULL; - - int width, height; - honey_lua_parse_arguments(L, 4, HONEY_ANY, HONEY_ANY, - HONEY_INTEGER, &width, - HONEY_INTEGER, &height); - - unsigned int framebuffer; - honey_texture_framebuffer_object_new(&framebuffer, - draw, depth, - width, height); - lua_pushinteger(L, framebuffer); - return 1; -} - -void honey_setup_texture(lua_State* L) -{ - honey_lua_element texture_elements[] = { - { "new", HONEY_FUNCTION, { .function = honey_lua_texture_new } }, - { "new_framebuffer", HONEY_FUNCTION, { .function = honey_lua_framebuffer_new } }, - { "create", HONEY_FUNCTION, { .function = honey_lua_texture_create } }, - { "load", HONEY_FUNCTION, { .function = honey_lua_texture_load } }, - { "use", HONEY_FUNCTION, { .function = honey_lua_texture_use } }, - }; - - honey_lua_create_table(L, texture_elements, 5); -} - -/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ - -static void generate_texture(honey_texture* texture, - int width, int height, - int format, int type, - void* data) -{ - unsigned int texture_id; - glGenTextures(1, &texture_id); - glBindTexture(GL_TEXTURE_2D, texture_id); - - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - - glTexImage2D(GL_TEXTURE_2D, 0, - format, - width, height, 0, - format, - type, data); - - texture->id = texture_id; - texture->width = width; - texture->height = height; - - switch(format) { - case GL_RED: - texture->type = GREY; - texture->channels = 1; - break; - - case GL_RGB: - texture->type = RGB; - texture->channels = 3; - break; - - case GL_RGBA: - texture->type = RGBA; - texture->channels = 4; - break; - - case GL_DEPTH_COMPONENT: - texture->type = DEPTH; - texture->channels = 1; - break; - - default: - break; - } - - return HONEY_OK; -} - -/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ - -void honey_texture_new_greyscale(honey_texture* texture, - int height, int width, - unsigned char* data) -{ - generate_texture(texture, width, height, GL_RED, GL_UNSIGNED_BYTE, data); -} - -/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ - -void honey_texture_new_rgb(honey_texture* texture, - int height, int width, - unsigned char* data) -{ - generate_texture(texture, width, height, GL_RGB, GL_UNSIGNED_BYTE, data); -} - -/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ - -void honey_texture_new_rgba(honey_texture* texture, - int height, int width, - unsigned char* data) -{ - generate_texture(texture, width, height, GL_RGBA, GL_UNSIGNED_BYTE, data); -} - -/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ - -void honey_texture_new_depth(honey_texture* texture, - int height, int width, - float* data) -{ - generate_texture(texture, width, height, GL_DEPTH_COMPONENT, GL_FLOAT, data); -} - -/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ - -enum honey_texture_result honey_texture_load(honey_texture* texture, - char* texture_path) -{ - int width, height, channels; - unsigned char* image_data = stbi_load(texture_path, &width, &height, &channels, 0); - if (image_data == NULL) { - return TEXTURE_FAILED; - } - - switch(channels) { - case 1: - honey_texture_new_greyscale(texture, width, height, image_data); - break; - - case 3: - honey_texture_new_rgb(texture, width, height, image_data); - break; - - case 4: - honey_texture_new_rgba(texture, width, height, image_data); - break; - - default: - return TEXTURE_CHANNEL_ERROR; - } - - glGenerateMipmap(GL_TEXTURE_2D); - stbi_image_free(image_data); - - return TEXTURE_OK; -} - -/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ - -void honey_texture_use(honey_texture texture, int texture_unit) { - glActiveTexture(GL_TEXTURE0 + texture_unit); - glBindTexture(GL_TEXTURE_2D, texture.id); -} - -/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ - -void honey_texture_framebuffer_object_new(unsigned int* destination, - honey_texture* draw, - honey_texture* depth, - int width, int height) -{ - glBindTexture(GL_TEXTURE_2D, 0); - - glGenFramebuffers(1, destination); - glBindFramebuffer(GL_FRAMEBUFFER, *destination); - - if (draw != NULL) - glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, draw->id, 0); - else { - glDrawBuffer(GL_NONE); - glReadBuffer(GL_NONE); - } - - if (depth != NULL) - glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depth->id, 0); - - if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) - printf("framebuffer is not complete!\n"); - - glBindFramebuffer(GL_FRAMEBUFFER, 0); -} -- cgit v1.2.1