Initial sources

engine/render/rendertarget.cpp

@@ -0,0 +1,63 @@
+#include <assert.h>
+#include "render/rendertarget.h"
+
+#include "render/texturesmanager.h"
+#include "render/texture2d.h"
+
+#include "glad/glad.h"
+
+void RenderTarget::setDefaultFramebuffer()
+{
+	glBindFramebuffer(GL_FRAMEBUFFER, 0);
+}
+
+RenderTarget::RenderTarget()
+{
+	m_framebuffer = -1;
+}
+
+RenderTarget::~RenderTarget()
+{
+	m_framebuffer = -1;
+}
+
+void RenderTarget::create(const char* name /*= nullptr*/)
+{
+	assert(g_texturesManager);
+	
+	////////////////////////
+	// Create FBO
+	
+	// generate frame buffer
+	glGenFramebuffers(1, &m_framebuffer);
+	glBindFramebuffer(GL_FRAMEBUFFER, m_framebuffer);
+}
+
+void RenderTarget::destroy()
+{
+	GLint drawFboId;
+	glGetIntegerv(GL_FRAMEBUFFER_BINDING, &drawFboId);
+
+	if (drawFboId == (GLint)m_framebuffer)
+		glBindFramebuffer(GL_FRAMEBUFFER, 0);
+	glDeleteFramebuffers(1, &m_framebuffer);
+}
+
+void RenderTarget::finialize()
+{
+	if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
+		assert(0 && "RenderTarget::finialize: failed to finialize framebuffer. Framebuffer is not complete");
+	}
+}
+
+void RenderTarget::attachColorTexture(int slot, Texture2D* texture)
+{
+	assert(texture && "Failed to assing nullptr texture");
+	glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + slot, GL_TEXTURE_2D, texture->GetHandle(), 0);
+}
+
+void RenderTarget::attachDepthTexture(Texture2D* texture)
+{
+	assert(texture && "Failed to assing nullptr texture");
+	glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, texture->GetHandle(), 0);
+}