Initial commit

1 files changed, 71 insertions, 0 deletions

diff --git a/08-august/src/texture.c b/08-august/src/texture.c
new file mode 100644
index 0000000..d1b70d9
--- /dev/null
+++ b/08-august/src/texture.c
@@ -0,0 +1,71 @@
+#include "texture.h"
+#include "util/util.h"
+
+#include <SDL2/SDL.h>
+#include <SDL2/SDL_image.h>
+
+GLuint Texture_Create2D( const char *path )
+{
+    GLuint ID;
+    SDL_Surface *data = IMG_Load(path);
+    if(data == NULL)
+        Util_FatalError("Texture %s could not be found!\n", path);
+
+    glGenTextures(1, &ID);
+    glBindTexture(GL_TEXTURE_2D, ID);
+
+    SDL_LockSurface(data);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, data->w, data->h, GL_FALSE, GL_RGBA, GL_UNSIGNED_BYTE, data->pixels);
+    SDL_UnlockSurface(data);
+
+    glGenerateMipmap(GL_TEXTURE_2D);
+    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_MAG_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_LOD_BIAS, -2.4);
+
+    SDL_FreeSurface(data);
+    glBindTexture(GL_TEXTURE_2D, 0);
+
+    return ID;
+}
+
+GLuint Texture_CreateCubeMap( const char *paths[6] )
+{
+    GLuint ID;
+    glGenTextures(1, &ID);
+    glBindTexture(GL_TEXTURE_CUBE_MAP, ID);
+
+    SDL_Surface *data;
+
+    int i;
+    for(i = 0; i < 6; i++)
+    {
+        data = IMG_Load(paths[i]);
+
+        if(data == NULL)
+            Util_FatalError("Texture %s could not be found!\n", paths[i]);
+
+        SDL_LockSurface(data);
+
+        /* All the textures sides are linearly stored so we just add "i" */
+        glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGBA,
+                     data->w, data->h, GL_FALSE, GL_RGBA, GL_UNSIGNED_BYTE, data->pixels);
+
+        SDL_UnlockSurface(data);
+
+        SDL_FreeSurface(data);
+    }
+
+    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    return ID;
+}
+
+void Texture_Destroy(GLuint ID)
+{
+    glDeleteTextures(1, &ID);
+}