Working on shader stuff

src/dusk/overworld/overworld.h

@@ -7,15 +7,14 @@
 
 #pragma once
 #include "entity.h"
-
+#include "overworlddefs.h"
-#define OVERWORLD_ENTITY_COUNT_MAX 32
 
 typedef struct {
   entity_t entities[OVERWORLD_ENTITY_COUNT_MAX];
   uint8_t entityCount;
 } overworld_t;
 
-extern overworld_t overworld;
+extern overworld_t OVERWORLD;
 
 /**
  * Initializes the overworld.

src/dusk/overworld/overworlddefs.h

@@ -0,0 +1,8 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#define OVERWORLD_ENTITY_COUNT_MAX 32

src/duskgl/display/shader/CMakeLists.txt

@@ -12,5 +12,6 @@ target_sources(${DUSK_TARGET_NAME}
 )
 
 # Subdirs
+add_subdirectory(data)
 add_subdirectory(entityshader)
 add_subdirectory(fragments)

src/duskgl/display/shader/data/CMakeLists.txt

@@ -0,0 +1,10 @@
+# Copyright (c) 2025 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DUSK_TARGET_NAME}
+  PRIVATE
+    transforms.c
+)

src/duskgl/display/shader/data/entities.h

@@ -0,0 +1,7 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+

src/duskgl/display/shader/entityshader/entity.glsl

@@ -0,0 +1,16 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "../fragments/quad.glsl"
+#include "../../../../dusk/overworld/overworlddefs.h"
+
+struct Entity {
+  vec2 position;
+};
+
+layout(std140) uniform b_Entities {
+  Entity entities[OVERWORLD_ENTITY_COUNT_MAX];
+  uint entityCount;
+};

src/duskgl/display/shader/entityshader/entity_frag.glsl

@@ -1,4 +1,10 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
 #include "../fragments/header.glsl"
+#include "entity.glsl"
 
 // Inputs from vertex shader
 in vec2 v_TextureCoord;

src/duskgl/display/shader/entityshader/entity_vert.glsl

@@ -1,6 +1,12 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
 #include "../fragments/header.glsl"
 #include "../fragments/transforms.glsl"
 #include "../fragments/quad.glsl"
+#include "entity.glsl"
 
 // Outputs to fragment shader
 out vec2 v_TextureCoord;

src/duskgl/display/shader/entityshader/entityshader.c

@@ -10,7 +10,7 @@
 #include "entityshader.h"
 #include "entity_vert.glsl.h"
 #include "entity_frag.glsl.h"
-#include "display/shader/fragments/transforms.h"
+#include "display/shader/data/transforms.h"
 
 entityshader_t ENTITY_SHADER;
 
@@ -30,11 +30,13 @@ void entityShaderInit() {
   );
 
   // Uniforms
+
+  // Bind
+  shaderBufferBindToBlock(&TRANSFORMS_BUFFER, ENTITY_SHADER.transformsBlock);
 }
 
 void entityShaderUse() {
   shaderUse(&ENTITY_SHADER.shader);
-  shaderBufferBindToBlock(&TRANSFORMS_BUFFER, ENTITY_SHADER.transformsBlock);
 }
 
 void entityShaderDispose() {

src/duskgl/display/shader/entityshader/entityshader.h

@@ -11,7 +11,7 @@
 typedef struct {
   shader_t shader;
   
-  // GLuint dataBlock;
+  GLuint entitiesBlock;
   GLuint transformsBlock;
   // GLuint tilesetsBlock;
   

src/duskgl/display/shader/fragments/CMakeLists.txt

@@ -6,5 +6,4 @@
 # Sources
 target_sources(${DUSK_TARGET_NAME}
   PRIVATE
-    transforms.c
 )

src/duskgl/display/shader/fragments/header.glsl

@@ -1,6 +1,6 @@
-#version 330 core
-
 // Copyright (c) 2025 Dominic Masters
 // 
 // This software is released under the MIT License.
 // https://opensource.org/licenses/MIT
+
+#version 330 core

src/duskgl/display/shader/shadermanager.c

@@ -6,26 +6,81 @@
  */
 
 #include "shadermanager.h"
-#include "display/shader/fragments/transforms.h"
+#include "assert/assert.h"
+#include "display/shader/data/transforms.h"
 #include "display/shader/entityshader/entityshader.h"
 
-void shaderManagerInit() {
+shadermanagerdatacallback_t SHADER_MANAGER_DATA_CALLBACKS[] = {
-  // Initialize the shader buffers
+  { transformsInit, transformsUpdate, transformsDispose }
-  transformsInit();
+};
 
-  // Initialize the shaders
+
-  entityShaderInit();
+shadermanagershadercallback_t SHADER_MANAGER_SHADER_CALLBACKS[] = {
+  { entityShaderInit, entityShaderDispose }
+};
+
+void shaderManagerInit() {
+  size_t i;
+  assertTrue(
+    SHADER_MANAGER_SHADER_CALLBACKS_SIZE > 0,
+    "No Shader Callbacks Defined"
+  );
+  assertTrue(
+    SHADER_MANAGER_DATA_CALLBACKS_SIZE > 0,
+    "No Data Callbacks Defined"
+  );
+
+  i = 0;
+  do {
+    assertNotNull(
+      SHADER_MANAGER_DATA_CALLBACKS[i].init,
+      "Data Callback is NULL"
+    );
+    SHADER_MANAGER_DATA_CALLBACKS[i++].init();
+  } while(i < SHADER_MANAGER_DATA_CALLBACKS_SIZE);
+
+  i = 0;
+  do {
+    assertNotNull(
+      SHADER_MANAGER_SHADER_CALLBACKS[i].init,
+      "Shader Callback is NULL"
+    );
+    SHADER_MANAGER_SHADER_CALLBACKS[i++].init();
+  } while(i < SHADER_MANAGER_SHADER_CALLBACKS_SIZE);
 }
 
 void shaderManagerUpdate() {
-  // Update shader buffers
+  assertTrue(
-  transformsUpdate();
+    SHADER_MANAGER_DATA_CALLBACKS_SIZE > 0,
+    "No Data Callbacks Defined"
+  );
+  
+  size_t i = 0;
+  do {
+    assertNotNull(
+      SHADER_MANAGER_DATA_CALLBACKS[i].update,
+      "Data Callback is NULL"
+    );
+    SHADER_MANAGER_DATA_CALLBACKS[i++].update();
+  } while(i < SHADER_MANAGER_DATA_CALLBACKS_SIZE);
 }
 
 void shaderManagerDispose() {
-  // Dispose the shaders
+  assertTrue(
-  entityShaderDispose();
+    SHADER_MANAGER_SHADER_CALLBACKS_SIZE > 0,
+    "No Shader Callbacks Defined"
+  );
+  assertTrue(
+    SHADER_MANAGER_DATA_CALLBACKS_SIZE > 0,
+    "No Data Callbacks Defined"
+  );
 
-  // Dispose the shader buffers
+  size_t i = 0;
-  transformsDispose();
+  do {
+    assertNotNull(
+      SHADER_MANAGER_SHADER_CALLBACKS[i].dispose,
+      "Shader Callback is NULL"
+    );
+    SHADER_MANAGER_SHADER_CALLBACKS[i++].dispose();
+  } while(i < SHADER_MANAGER_SHADER_CALLBACKS_SIZE);
 }

src/duskgl/display/shader/shadermanager.h

@@ -6,6 +6,30 @@
  */
 
 #pragma once
+#include "dusk.h"
+
+typedef struct {
+  void (*init)();
+  void (*update)();
+  void (*dispose)();
+} shadermanagerdatacallback_t;
+
+typedef struct {
+  void (*init)();
+  void (*dispose)();
+} shadermanagershadercallback_t;
+
+extern shadermanagerdatacallback_t SHADER_MANAGER_DATA_CALLBACKS[];
+extern shadermanagershadercallback_t SHADER_MANAGER_SHADER_CALLBACKS[];
+
+#define SHADER_MANAGER_DATA_CALLBACKS_SIZE ( \
+  sizeof(SHADER_MANAGER_DATA_CALLBACKS) / sizeof(shadermanagerdatacallback_t) \
+)
+
+#define SHADER_MANAGER_SHADER_CALLBACKS_SIZE ( \
+  sizeof(SHADER_MANAGER_SHADER_CALLBACKS) / \
+  sizeof(shadermanagershadercallback_t) \
+)
 
 /**
  * Initializes the Shader Manager

src/duskgl/overworld/overworld.c

@@ -11,5 +11,7 @@
 
 void overworldRender() {
   entityShaderUse();
+
+  // Set entity data.
   quadRender(1);
 }