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Diffstat (limited to 'src/texture/texture.c')
-rw-r--r--src/texture/texture.c268
1 files changed, 0 insertions, 268 deletions
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);
-}
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-24 14:12:53 +0000