initial EGL code

1 files changed, 246 insertions, 0 deletions

diff --git a/src/egl/main/eglsurface.c b/src/egl/main/eglsurface.c
new file mode 100644
index 00000000000..b9902c7af00
--- /dev/null
+++ b/src/egl/main/eglsurface.c
@@ -0,0 +1,246 @@
+/**
+ * Surface-related functions.
+ *
+ * See the eglcontext.c file for comments that also apply here.
+ */
+
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include "eglcontext.h"
+#include "eglconfig.h"
+#include "eglsurface.h"
+#include "eglglobals.h"
+#include "eglhash.h"
+
+
+void
+_eglInitSurface(_EGLSurface *surf)
+{
+   /* XXX fix this up */
+   memset(surf, 0, sizeof(_EGLSurface));
+}
+
+
+void
+_eglSaveSurface(_EGLSurface *surf)
+{
+   assert(surf);
+   surf->Handle = _eglHashGenKey(_eglGlobal.Contexts);
+   _eglHashInsert(_eglGlobal.Surfaces, surf->Handle, surf);
+}
+
+
+void
+_eglRemoveSurface(_EGLSurface *surf)
+{
+   _eglHashRemove(_eglGlobal.Surfaces, surf->Handle);
+}
+
+
+_EGLSurface *
+_eglLookupSurface(EGLSurface surf)
+{
+   _EGLSurface *c = (_EGLSurface *) _eglHashLookup(_eglGlobal.Surfaces, surf);
+   return c;
+}
+
+
+_EGLSurface *
+_eglGetCurrentSurface(EGLint readdraw)
+{
+   _EGLContext *ctx = _eglGetCurrentContext();
+   if (ctx) {
+      switch (readdraw) {
+      case EGL_DRAW:
+         return ctx->DrawSurface;
+      case EGL_READ:
+         return ctx->ReadSurface;
+      default:
+         return NULL;
+      }
+   }
+   return NULL;
+}
+
+
+EGLBoolean
+_eglSwapBuffers(_EGLDriver *drv, EGLDisplay dpy, EGLSurface draw)
+{
+   /* Basically just do error checking */
+   _EGLContext *context = _eglGetCurrentContext();
+   _EGLSurface *surface = _eglLookupSurface(draw);
+   if (context && context->DrawSurface != surface) {
+      _eglError(EGL_BAD_SURFACE, "eglSwapBuffers");
+      return EGL_FALSE;
+   }
+   if (surface == NULL) {
+      _eglError(EGL_BAD_SURFACE, "eglSwapBuffers");
+      return EGL_FALSE;
+   }
+   return EGL_TRUE;
+}
+
+
+EGLBoolean
+_eglCopyBuffers(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface, NativePixmapType target)
+{
+   /* XXX unfinished */
+   return EGL_FALSE;
+}
+
+
+EGLBoolean
+_eglQuerySurface(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surf, EGLint attribute, EGLint *value)
+{
+   _EGLSurface *surface = _eglLookupSurface(surf);
+   if (surface == NULL) {
+      _eglError(EGL_BAD_SURFACE, "eglQuerySurface");
+      return EGL_FALSE;
+   }
+   switch (attribute) {
+   case EGL_WIDTH:
+      *value = surface->Width;
+      return EGL_TRUE;
+   case EGL_HEIGHT:
+      *value = surface->Height;
+      return EGL_TRUE;
+   case EGL_CONFIG_ID:
+      *value = GET_CONFIG_ATTRIB(surface->Config, EGL_CONFIG_ID);
+      return EGL_TRUE;
+   case EGL_TEXTURE_FORMAT:
+      /* texture attributes: only for pbuffers, no error otherwise */
+      if (surface->Type == EGL_PBUFFER_BIT)
+         *value = surface->TextureFormat;
+      return EGL_TRUE;
+   case EGL_TEXTURE_TARGET:
+      if (surface->Type == EGL_PBUFFER_BIT)
+         *value = surface->TextureTarget;
+      return EGL_TRUE;
+   case EGL_MIPMAP_TEXTURE:
+      if (surface->Type == EGL_PBUFFER_BIT)
+         *value = surface->MipmapTexture;
+      return EGL_TRUE;
+   case EGL_MIPMAP_LEVEL:
+      if (surface->Type == EGL_PBUFFER_BIT)
+         *value = surface->MipmapLevel;
+      return EGL_TRUE;
+   default:
+      _eglError(EGL_BAD_ATTRIBUTE, "eglQuerySurface");
+      return EGL_FALSE;
+   }
+}
+
+
+/**
+ * Default fallback routine - drivers should usually override this.
+ */
+EGLSurface
+_eglCreateWindowSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, NativeWindowType window, const EGLint *attrib_list)
+{
+   /* nothing - just a placeholder */
+   return EGL_NO_SURFACE;
+}
+
+
+/**
+ * Default fallback routine - drivers should usually override this.
+ */
+EGLSurface
+_eglCreatePixmapSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, NativePixmapType pixmap, const EGLint *attrib_list)
+{
+   /* nothing - just a placeholder */
+   return EGL_NO_SURFACE;
+}
+
+
+/**
+ * Default fallback routine - drivers should usually override this.
+ */
+EGLSurface
+_eglCreatePbufferSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, const EGLint *attrib_list)
+{
+   /* nothing - just a placeholder */
+   return EGL_NO_SURFACE;
+}
+
+
+/**
+ * Default fallback routine - drivers should usually override this.
+ */
+EGLBoolean
+_eglDestroySurface(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface)
+{
+   _EGLSurface *surf = _eglLookupSurface(surface);
+   if (surf) {
+      _eglHashRemove(_eglGlobal.Surfaces, surface);
+      if (surf->IsBound) {
+         surf->DeletePending = EGL_TRUE;
+      }
+      else {
+         free(surf);
+      }
+      return EGL_TRUE;
+   }
+   else {
+      _eglError(EGL_BAD_SURFACE, "eglDestroySurface");
+      return EGL_FALSE;
+   }
+}
+
+
+/**
+ * Default fallback routine - drivers might override this.
+ */
+EGLBoolean
+_eglSurfaceAttrib(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surf, EGLint attribute, EGLint value)
+{
+   _EGLSurface *surface = _eglLookupSurface(surf);
+
+   if (surface == NULL) {
+      _eglError(EGL_BAD_SURFACE, "eglSurfaceAttrib");
+      return EGL_FALSE;
+   }
+
+   switch (attribute) {
+   case EGL_MIPMAP_LEVEL:
+      surface->MipmapLevel = value;
+      break;
+   default:
+      _eglError(EGL_BAD_ATTRIBUTE, "eglSurfaceAttrib");
+      return EGL_FALSE;
+   }
+   return EGL_TRUE;
+}
+
+
+EGLBoolean
+_eglBindTexImage(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface, EGLint buffer)
+{
+   /* XXX unfinished */
+   return EGL_FALSE;
+}
+
+
+EGLBoolean
+_eglReleaseTexImage(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface, EGLint buffer)
+{
+   /* XXX unfinished */
+   return EGL_FALSE;
+}
+
+
+EGLBoolean
+_eglSwapInterval(_EGLDriver *drv, EGLDisplay dpy, EGLint interval)
+{
+   _EGLSurface *surf = _eglGetCurrentSurface(EGL_DRAW);
+   if (surf == NULL) {
+      _eglError(EGL_BAD_SURFACE, "eglSwapInterval");
+      return EGL_FALSE;
+   }
+   surf->SwapInterval = interval;
+   return EGL_TRUE;
+}
+
+