Separated GL Buffer stuff

2026-10-06 13:48:01 +03:00 · 2024-06-26 09:05:32 +03:00
parent 09b3f0dc94
commit 3d5ff931b5
9 changed files with 580 additions and 525 deletions
@@ -0,0 +1,132 @@
+/*
+    by korenkonder
+    GitHub/GitLab: korenkonder
+*/
+
+#include "array_buffer.hpp"
+#include "../gl_state.hpp"
+
+namespace GL {
+    void ArrayBuffer::Bind(bool force) {
+        gl_state_bind_array_buffer(buffer, force);
+    }
+
+    void ArrayBuffer::Create(size_t size) {
+        if (buffer)
+            return;
+
+        if (GL_VERSION_4_5) {
+            glCreateBuffers(1, &buffer);
+            glNamedBufferStorage(buffer, (GLsizeiptr)size, 0, GL_DYNAMIC_STORAGE_BIT | GL_MAP_WRITE_BIT);
+        }
+        else {
+            glGenBuffers(1, &buffer);
+            gl_state_bind_array_buffer(buffer, true);
+            if (GL_VERSION_4_4)
+                glBufferStorage(GL_ARRAY_BUFFER, (GLsizeiptr)size,
+                    0, GL_DYNAMIC_STORAGE_BIT | GL_MAP_WRITE_BIT);
+            else
+                glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)size, 0, GL_DYNAMIC_DRAW);
+        }
+    }
+
+    void ArrayBuffer::Create(size_t size, const void* data, bool dynamic) {
+        if (buffer)
+            return;
+
+        if (GL_VERSION_4_5) {
+            glCreateBuffers(1, &buffer);
+            glNamedBufferStorage(buffer, (GLsizeiptr)size, data,
+                dynamic ? GL_DYNAMIC_STORAGE_BIT | GL_MAP_WRITE_BIT : 0);
+        }
+        else {
+            glGenBuffers(1, &buffer);
+            gl_state_bind_array_buffer(buffer, true);
+            if (GL_VERSION_4_4)
+                glBufferStorage(GL_ARRAY_BUFFER, (GLsizeiptr)size, data,
+                    dynamic ? GL_DYNAMIC_STORAGE_BIT | GL_MAP_WRITE_BIT : 0);
+            else
+                glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)size, data,
+                    dynamic ? GL_DYNAMIC_DRAW : GL_STATIC_DRAW);
+        }
+    }
+
+    void ArrayBuffer::Destroy() {
+        if (buffer) {
+            glDeleteBuffers(1, &buffer);
+            buffer = 0;
+        }
+    }
+
+    void* ArrayBuffer::MapMemory() {
+        if (!buffer)
+            return 0;
+
+        void* data;
+        if (GL_VERSION_4_5)
+            data = glMapNamedBuffer(buffer, GL_WRITE_ONLY);
+        else {
+            gl_state_bind_array_buffer(buffer);
+            data = glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
+        }
+
+        if (data)
+            return data;
+
+        if (GL_VERSION_4_5)
+            glUnmapNamedBuffer(buffer);
+        else {
+            glUnmapBuffer(GL_ARRAY_BUFFER);
+            gl_state_bind_array_buffer(0);
+        }
+        return 0;
+    }
+
+    void* ArrayBuffer::MapMemory(size_t offset, size_t length) {
+        if (!buffer)
+            return 0;
+
+        void* data;
+        if (GL_VERSION_4_5)
+            data = glMapNamedBufferRange(buffer, (GLintptr)offset, (GLsizeiptr)length, GL_WRITE_ONLY);
+        else {
+            gl_state_bind_array_buffer(buffer);
+            data = glMapBufferRange(GL_ARRAY_BUFFER, (GLintptr)offset, (GLsizeiptr)length, GL_WRITE_ONLY);
+        }
+
+        if (data)
+            return data;
+
+        if (GL_VERSION_4_5)
+            glUnmapNamedBuffer(buffer);
+        else {
+            glUnmapBuffer(GL_ARRAY_BUFFER);
+            gl_state_bind_array_buffer(0);
+        }
+        return 0;
+    }
+
+    void ArrayBuffer::UnmapMemory() {
+        if (!buffer)
+            return;
+
+        if (GL_VERSION_4_5)
+            glUnmapNamedBuffer(buffer);
+        else {
+            glUnmapBuffer(GL_ARRAY_BUFFER);
+            gl_state_bind_array_buffer(0);
+        }
+    }
+
+    void ArrayBuffer::WriteMemory(size_t offset, size_t size, const void* data) {
+        if (!buffer)
+            return;
+
+        if (GL_VERSION_4_5)
+            glNamedBufferSubData(buffer, (GLsizeiptr)offset, (GLsizeiptr)size, data);
+        else {
+            gl_state_bind_array_buffer(buffer);
+            glBufferSubData(GL_ARRAY_BUFFER, (GLsizeiptr)offset, (GLsizeiptr)size, data);
+        }
+    }
+}