Add basic block textures

- Remove the code that sent colors through uniform variables, instead
  send texture data
- Each vertex now has a texture coordinate
- struct texture is a easy way to represent textures, can be extended
  later
- Shaders updated to use textures

1 files changed, 9 insertions, 0 deletions

diff --git a/src/util.c b/src/util.c
index 0a5d983..b296b56 100644
--- a/src/util.c
+++ b/src/util.c
@@ -22,3 +22,12 @@ void create_ebo(GLuint *ebo, void* buf, int size) {
     glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
 }
 
+void create_texture(GLuint* tbo, void* buf, vec2 size) {
+    glGenTextures(1, tbo);
+    glBindTexture(GL_TEXTURE_2D, *tbo);
+    float borderColor[] = { 1.0f, 1.0f, 1.0f, 1.0f };
+    glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, borderColor);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, size[0], size[1], 0, GL_RGB, GL_UNSIGNED_BYTE, buf);
+    glGenerateMipmap(GL_TEXTURE_2D);
+    // glBindTexture(GL_TEXTURE_2D, 0);
+}