From b0bfd3cf610fdf243503447f6ad9fa19de502365 Mon Sep 17 00:00:00 2001
From: 0scar <qgt268@alumni.ku.dk>
Date: Mon, 19 Feb 2024 08:14:06 +0100
Subject: Add texture loading

---
 src/rendering/include/engine/rendering/rendering.h | 11 ++++++++++
 src/rendering/src/rendering.c                      | 25 ++++++++++++++++++++++
 2 files changed, 36 insertions(+)

(limited to 'src/rendering')

diff --git a/src/rendering/include/engine/rendering/rendering.h b/src/rendering/include/engine/rendering/rendering.h
index 87de0b2..1412cb4 100644
--- a/src/rendering/include/engine/rendering/rendering.h
+++ b/src/rendering/include/engine/rendering/rendering.h
@@ -20,6 +20,7 @@ extern "C" {
 #define RGB(_r, _g, _b) RGBA(_r, _g, _b, 0xFF)
 
 /* Types */
+/* TODO: Cleanup these types. */
 typedef struct {
   u8 r;
   u8 g;
@@ -27,6 +28,14 @@ typedef struct {
   u8 a;
 } Engine_color;
 
+typedef struct {
+  /* Maybe implement types, such as `atlas` (default), `standalone`, or
+   * something idk. */
+  u32 id;
+  i32 width;
+  i32 height;
+} Texture;
+
 typedef struct {
   u32 texture_id;
   v2_i32 coord;
@@ -145,6 +154,8 @@ u32 ComposeShader(u32 *shaders, usize shaders_len);
 
 ShaderType guess_shadertype_from_filename(const char *restrict fname);
 
+Texture createTextureFromImageData(unsigned char* image_data, i32 width, i32 height);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/rendering/src/rendering.c b/src/rendering/src/rendering.c
index aa9306e..d475ee2 100644
--- a/src/rendering/src/rendering.c
+++ b/src/rendering/src/rendering.c
@@ -252,3 +252,28 @@ Sprite sprite_new(u64 tid, u8 coord) {
         .y = ts * ((coord & 0xF0) >> 4),
       }};
 }
+
+Texture createTextureFromImageData(unsigned char* image_data, i32 width, i32 height) {
+  Window* restrict w = GLOBAL_PLATFORM->window;
+  Texture t;
+  t.width = width;
+  t.height = height;
+
+  if (w->renderer != WINDOW_RENDERER_OPENGL) {
+    ERROR("createTextureFromImageData not implemented for chosen renderer!");
+    return (Texture){.id = 0, .width = 0, .height = 0};
+  }
+
+  const GladGLContext* gl = w->context;
+
+  gl->GenTextures(1, &t.id);
+  gl->BindTexture(GL_TEXTURE_2D, t.id);
+
+  gl->TexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGBA,
+                 GL_UNSIGNED_BYTE, image_data);
+
+  gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+  gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+
+  return t;
+}
-- 
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