1 files changed, 73 insertions, 2 deletions
diff --git a/src/rendering.cc b/src/rendering.cc
index b26106f..52d4eae 100644
--- a/src/rendering.cc
+++ b/src/rendering.cc
@@ -1,5 +1,76 @@
 #include "rendering.h"
 
-bool atlas_init(atlas_t* atlas, u32 width, u32 height) {}
+#include <glad.h>
 
-void atlas_deinit(atlas_t* atlas) {}
+#include "utils.h"
+
+bool wayc_image_init(texture_t* texture, image_type_e type,
+                     image_format_e format, u32 width, u32 height) {
+  bool success = false;
+  glGenTextures(1, texture);
+  wayc_defer_cond(glDeleteTextures(1, texture), success, true);
+
+  glBindTexture(type, *texture);
+  switch (type) {
+    case IMAGE_TYPE_2D:
+      glTexStorage2D(type, 1, format, width, height);
+      break;
+    default:
+      return success;
+  }
+
+  glBindTexture(type, 0);
+
+  success = true;
+  return success;
+}
+
+bool wayc_image_upload(texture_t texture, ivec2 offset, u32 width, u32 height,
+                       image_type_e type, image_format_e format,
+                       image_data_type_e data_type, const u8* data) {
+  glBindTexture(type, texture);
+  switch (type) {
+    case IMAGE_TYPE_2D:
+      glTexSubImage2D(type, 0, offset[0], offset[1], width, height, format,
+                      data_type, data);
+      break;
+    default:
+      return false;
+  }
+
+  return true;
+}
+
+void wayc_image_use(texture_t texture, image_type_e type, u32 slot) {
+  glActiveTexture(GL_TEXTURE0 + slot);
+  glBindTexture(type, texture);
+}
+
+void wayc_image_deinit(texture_t* texture) { glDeleteTextures(1, texture); }
+
+bool wayc_sampler_init(sampler_t* sampler, sample_filter_e filter,
+                       sample_wrap_e wrap) {
+  glGenSamplers(1, sampler);
+  if (*sampler == 0) return false;
+
+  glSamplerParameteri(*sampler, GL_TEXTURE_MIN_FILTER, filter);
+  glSamplerParameteri(*sampler, GL_TEXTURE_MAG_FILTER, filter);
+  glSamplerParameteri(*sampler, GL_TEXTURE_WRAP_S, wrap);
+  glSamplerParameteri(*sampler, GL_TEXTURE_WRAP_T, wrap);
+
+  return true;
+}
+
+void wayc_sampler_use(sampler_t sampler, u32 slot) {
+  glActiveTexture(GL_TEXTURE0 + slot);
+  glBindSampler(slot, sampler);
+}
+
+void wayc_sampler_deinit(sampler_t* sampler) { glDeleteSamplers(1, sampler); }
+
+bool wayc_atlas_init(atlas_t* atlas, image_format_e format, u32 width,
+                     u32 height) {
+  return wayc_image_init(atlas, IMAGE_TYPE_2D, format, width, height);
+}
+
+void wayc_atlas_deinit(atlas_t* atlas) { wayc_image_deinit(atlas); }