Implement gen/delete/bind framebuffers

GL/flush.c

@@ -68,6 +68,7 @@ void APIENTRY glKosInit() {
     initContext();
     initLights();
     initImmediateMode();
+    initFramebuffers();
 
     _glKosInitTextures();
 

GL/framebuffer.c

@@ -1,19 +1,58 @@
+#include <stdio.h>
 #include "private.h"
 
-static GLuint ACTIVE_FRAMEBUFFER = 0;
+
+typedef struct {
+    GLuint index;
+    GLuint texture_id;
+    GLboolean is_complete;
+} FrameBuffer;
+
+static FrameBuffer* ACTIVE_FRAMEBUFFER = NULL;
 static NamedArray FRAMEBUFFERS;
 
 
-void APIENTRY glGenFramebuffersEXT(GLsizei n, GLuint* framebuffers) {
+void initFramebuffers() {
+    named_array_init(&FRAMEBUFFERS, sizeof(FrameBuffer), 32);
+}
 
+void APIENTRY glGenFramebuffersEXT(GLsizei n, GLuint* framebuffers) {
+    TRACE();
+
+    while(n--) {
+        GLuint id = 0;
+        FrameBuffer* fb = (FrameBuffer*) named_array_alloc(&FRAMEBUFFERS, &id);
+        fb->index = id;
+        fb->is_complete = GL_FALSE;
+        fb->texture_id = 0;
+
+        *framebuffers = id;
+        framebuffers++;
+    }
 }
 
 void APIENTRY glDeleteFramebuffersEXT(GLsizei n, const GLuint* framebuffers) {
+    TRACE();
 
+    while(n--) {
+        FrameBuffer* fb = (FrameBuffer*) named_array_get(&FRAMEBUFFERS, *framebuffers);
+
+        if(fb == ACTIVE_FRAMEBUFFER) {
+            ACTIVE_FRAMEBUFFER = NULL;
+        }
+
+        named_array_release(&FRAMEBUFFERS, *framebuffers++);
+    }
 }
 
 void APIENTRY glBindFramebufferEXT(GLenum target, GLuint framebuffer) {
+    TRACE();
 
+    if(framebuffer) {
+        ACTIVE_FRAMEBUFFER = (FrameBuffer*) named_array_get(&FRAMEBUFFERS, framebuffer);
+    } else {
+        ACTIVE_FRAMEBUFFER = NULL;
+    }
 }
 
 void APIENTRY glFramebufferTexture2DEXT(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level) {

GL/private.h

@@ -69,6 +69,7 @@ void initContext();
 void initLights();
 void initImmediateMode();
 void initMatrices();
+void initFramebuffers();
 
 void _matrixLoadNormal();
 void _matrixLoadModelView();