1 files changed, 530 insertions, 0 deletions
diff --git a/src/egl/main/eglsurface.c b/src/egl/main/eglsurface.c
new file mode 100644
index 0000000000..874f318e96
--- /dev/null
+++ b/src/egl/main/eglsurface.c
@@ -0,0 +1,530 @@
+/**
+ * Surface-related functions.
+ */
+
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include "eglcontext.h"
+#include "eglconfig.h"
+#include "eglglobals.h"
+#include "eglhash.h"
+#include "egllog.h"
+#include "eglsurface.h"
+
+
+/**
+ * Do error check on parameters and initialize the given _EGLSurface object.
+ * \return EGL_TRUE if no errors, EGL_FALSE otherwise.
+ */
+EGLBoolean
+_eglInitSurface(_EGLDriver *drv, EGLDisplay dpy,
+                _EGLSurface *surf, EGLint type, EGLConfig config,
+                const EGLint *attrib_list)
+{
+   const char *func;
+   _EGLConfig *conf;
+   EGLint width = 0, height = 0, largest = 0;
+   EGLint texFormat = 0, texTarget = 0, mipmapTex = 0;
+   EGLint renderBuffer = EGL_BACK_BUFFER;
+#ifdef EGL_VERSION_1_2
+   EGLint colorspace = EGL_COLORSPACE_sRGB;
+   EGLint alphaFormat = EGL_ALPHA_FORMAT_NONPRE;
+#endif
+   EGLint i;
+
+   switch (type) {
+   case EGL_WINDOW_BIT:
+      func = "eglCreateWindowSurface";
+      break;
+   case EGL_PIXMAP_BIT:
+      func = "eglCreatePixmapSurface";
+      renderBuffer = EGL_SINGLE_BUFFER;
+      break;
+   case EGL_PBUFFER_BIT:
+      func = "eglCreatePBufferSurface";
+      break;
+   case EGL_SCREEN_BIT_MESA:
+      func = "eglCreateScreenSurface";
+      renderBuffer = EGL_SINGLE_BUFFER; /* XXX correct? */
+      break;
+   default:
+      _eglLog(_EGL_WARNING, "Bad type in _eglInitSurface");
+      return EGL_FALSE;
+   }
+
+   conf = _eglLookupConfig(drv, dpy, config);
+   if (!conf) {
+      _eglError(EGL_BAD_CONFIG, func);
+      return EGL_FALSE;
+   }
+
+   /*
+    * Parse attribute list.  Different kinds of surfaces support different
+    * attributes.
+    */
+   for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) {
+      switch (attrib_list[i]) {
+      case EGL_WIDTH:
+         if (type == EGL_PBUFFER_BIT || type == EGL_SCREEN_BIT_MESA) {
+            width = attrib_list[++i];
+         }
+         else {
+            _eglError(EGL_BAD_ATTRIBUTE, func);
+            return EGL_FALSE;
+         }
+         break;
+      case EGL_HEIGHT:
+         if (type == EGL_PBUFFER_BIT || type == EGL_SCREEN_BIT_MESA) {
+            height = attrib_list[++i];
+         }
+         else {
+            _eglError(EGL_BAD_ATTRIBUTE, func);
+            return EGL_FALSE;
+         }
+         break;
+      case EGL_LARGEST_PBUFFER:
+         if (type == EGL_PBUFFER_BIT) {
+            largest = attrib_list[++i];
+         }
+         else {
+            _eglError(EGL_BAD_ATTRIBUTE, func);
+            return EGL_FALSE;
+         }
+         break;
+      case EGL_TEXTURE_FORMAT:
+         if (type == EGL_PBUFFER_BIT) {
+            texFormat = attrib_list[++i];
+         }
+         else {
+            _eglError(EGL_BAD_ATTRIBUTE, func);
+            return EGL_FALSE;
+         }
+         break;
+      case EGL_TEXTURE_TARGET:
+         if (type == EGL_PBUFFER_BIT) {
+            texTarget = attrib_list[++i];
+         }
+         else {
+            _eglError(EGL_BAD_ATTRIBUTE, func);
+            return EGL_FALSE;
+         }
+         break;
+      case EGL_MIPMAP_TEXTURE:
+         if (type == EGL_PBUFFER_BIT) {
+            mipmapTex = attrib_list[++i];
+         }
+         else {
+            _eglError(EGL_BAD_ATTRIBUTE, func);
+            return EGL_FALSE;
+         }
+         break;
+#ifdef EGL_VERSION_1_2
+      case EGL_RENDER_BUFFER:
+         if (type == EGL_WINDOW_BIT) {
+            renderBuffer = attrib_list[++i];
+            if (renderBuffer != EGL_BACK_BUFFER &&
+                renderBuffer != EGL_SINGLE_BUFFER) {
+               _eglError(EGL_BAD_ATTRIBUTE, func);
+               return EGL_FALSE;
+            }
+         }
+         else {
+            _eglError(EGL_BAD_ATTRIBUTE, func);
+            return EGL_FALSE;
+         }
+         break;
+      case EGL_COLORSPACE:
+         if (type == EGL_WINDOW_BIT ||
+             type == EGL_PBUFFER_BIT ||
+             type == EGL_PIXMAP_BIT) {
+            colorspace = attrib_list[++i];
+            if (colorspace != EGL_COLORSPACE_sRGB &&
+                colorspace != EGL_COLORSPACE_LINEAR) {
+               _eglError(EGL_BAD_ATTRIBUTE, func);
+               return EGL_FALSE;
+            }
+         }
+         else {
+            _eglError(EGL_BAD_ATTRIBUTE, func);
+            return EGL_FALSE;
+         }
+         break;
+      case EGL_ALPHA_FORMAT:
+         if (type == EGL_WINDOW_BIT ||
+             type == EGL_PBUFFER_BIT ||
+             type == EGL_PIXMAP_BIT) {
+            alphaFormat = attrib_list[++i];
+            if (alphaFormat != EGL_ALPHA_FORMAT_NONPRE &&
+                alphaFormat != EGL_ALPHA_FORMAT_PRE) {
+               _eglError(EGL_BAD_ATTRIBUTE, func);
+               return EGL_FALSE;
+            }
+         }
+         else {
+            _eglError(EGL_BAD_ATTRIBUTE, func);
+            return EGL_FALSE;
+         }
+         break;
+
+#endif /* EGL_VERSION_1_2 */
+      default:
+         _eglError(EGL_BAD_ATTRIBUTE, func);
+         return EGL_FALSE;
+      }
+   }
+
+   if (width <= 0 || height <= 0) {
+      _eglError(EGL_BAD_ATTRIBUTE, func);
+      return EGL_FALSE;
+   }
+
+   memset(surf, 0, sizeof(_EGLSurface));
+   surf->Config = conf;
+   surf->Type = type;
+   surf->Width = width;
+   surf->Height = height;
+   surf->TextureFormat = texFormat;
+   surf->TextureTarget = texTarget;
+   surf->MipmapTexture = mipmapTex;
+   surf->MipmapLevel = 0;
+   surf->SwapInterval = 0;
+#ifdef EGL_VERSION_1_2
+   surf->SwapBehavior = EGL_BUFFER_DESTROYED; /* XXX ok? */
+   surf->HorizontalResolution = EGL_UNKNOWN; /* set by caller */
+   surf->VerticalResolution = EGL_UNKNOWN; /* set by caller */
+   surf->AspectRatio = EGL_UNKNOWN; /* set by caller */
+   surf->RenderBuffer = renderBuffer;
+   surf->AlphaFormat = alphaFormat;
+   surf->Colorspace = colorspace;
+#endif
+
+   return EGL_TRUE;
+}
+
+
+void
+_eglSaveSurface(_EGLSurface *surf)
+{
+   assert(surf);
+   assert(!surf->Handle);
+   surf->Handle = _eglHashGenKey(_eglGlobal.Contexts);
+   assert(surf->Handle);
+   _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 here.  Drivers have to do the
+    * actual buffer swap.
+    */
+   _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)
+{
+   /* copy surface to native pixmap */
+   /* All implementation burdon for this is in the device driver */
+   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;
+   /*XXX case EGL_LARGEST_PBUFFER:*/
+   case EGL_SURFACE_TYPE:
+      *value = surface->Type;
+      return EGL_TRUE;
+#ifdef EGL_VERSION_1_1
+   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;
+#endif /* EGL_VERSION_1_1 */
+#ifdef EGL_VERSION_1_2
+   case EGL_SWAP_BEHAVIOR:
+      *value = surface->SwapBehavior;
+      return EGL_TRUE;
+   case EGL_RENDER_BUFFER:
+      *value = surface->RenderBuffer;
+      return EGL_TRUE;
+   case EGL_PIXEL_ASPECT_RATIO:
+      *value = surface->AspectRatio;
+      return EGL_TRUE;
+   case EGL_HORIZONTAL_RESOLUTION:
+      *value = surface->HorizontalResolution;
+      return EGL_TRUE;
+   case EGL_VERTICAL_RESOLUTION:
+      *value = surface->VerticalResolution;
+      return EGL_TRUE;
+   case EGL_ALPHA_FORMAT:
+      *value = surface->AlphaFormat;
+      return EGL_TRUE;
+   case EGL_COLORSPACE:
+      *value = surface->Colorspace;
+      return EGL_TRUE;
+#endif /* EGL_VERSION_1_2 */
+   default:
+      _eglError(EGL_BAD_ATTRIBUTE, "eglQuerySurface");
+      return EGL_FALSE;
+   }
+}
+
+
+/**
+ * Example function - drivers should do a proper implementation.
+ */
+EGLSurface
+_eglCreateWindowSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
+                        NativeWindowType window, const EGLint *attrib_list)
+{
+#if 0 /* THIS IS JUST EXAMPLE CODE */
+   _EGLSurface *surf;
+
+   surf = (_EGLSurface *) calloc(1, sizeof(_EGLSurface));
+   if (!surf)
+      return EGL_NO_SURFACE;
+
+   if (!_eglInitSurface(drv, dpy, surf, EGL_WINDOW_BIT, config, attrib_list)) {
+      free(surf);
+      return EGL_NO_SURFACE;
+   }
+
+   _eglSaveSurface(surf);
+
+   return surf->Handle;
+#endif
+   return EGL_NO_SURFACE;
+}
+
+
+/**
+ * Example function - drivers should do a proper implementation.
+ */
+EGLSurface
+_eglCreatePixmapSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
+                        NativePixmapType pixmap, const EGLint *attrib_list)
+{
+#if 0 /* THIS IS JUST EXAMPLE CODE */
+   _EGLSurface *surf;
+
+   surf = (_EGLSurface *) calloc(1, sizeof(_EGLSurface));
+   if (!surf)
+      return EGL_NO_SURFACE;
+
+   if (!_eglInitSurface(drv, dpy, surf, EGL_PIXMAP_BIT, config, attrib_list)) {
+      free(surf);
+      return EGL_NO_SURFACE;
+   }
+
+   _eglSaveSurface(surf);
+
+   return surf->Handle;
+#endif
+   return EGL_NO_SURFACE;
+}
+
+
+/**
+ * Example function - drivers should do a proper implementation.
+ */
+EGLSurface
+_eglCreatePbufferSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
+                         const EGLint *attrib_list)
+{
+#if 0 /* THIS IS JUST EXAMPLE CODE */
+   _EGLSurface *surf;
+
+   surf = (_EGLSurface *) calloc(1, sizeof(_EGLSurface));
+   if (!surf)
+      return EGL_NO_SURFACE;
+
+   if (!_eglInitSurface(drv, dpy, surf, EGL_PBUFFER_BIT, config, attrib_list)) {
+      free(surf);
+      return EGL_NO_SURFACE;
+   }
+
+   _eglSaveSurface(surf);
+
+   return surf->Handle;
+#endif
+   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;
+}
+
+
+#ifdef EGL_VERSION_1_2
+
+/**
+ * Example function - drivers should do a proper implementation.
+ */
+EGLSurface
+_eglCreatePbufferFromClientBuffer(_EGLDriver *drv, EGLDisplay dpy,
+                                  EGLenum buftype, EGLClientBuffer buffer,
+                                  EGLConfig config, const EGLint *attrib_list)
+{
+   if (buftype != EGL_OPENVG_IMAGE) {
+      _eglError(EGL_BAD_PARAMETER, "eglCreatePbufferFromClientBuffer");
+      return EGL_NO_SURFACE;
+   }
+
+   return EGL_NO_SURFACE;
+}
+
+#endif /* EGL_VERSION_1_2 */