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/**
* Surface-related functions.
*/
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "egldisplay.h"
#include "eglcontext.h"
#include "eglconfig.h"
#include "eglcurrent.h"
#include "egllog.h"
#include "eglsurface.h"
static void
_eglClampSwapInterval(_EGLSurface *surf, EGLint interval)
{
EGLint bound = surf->Config->MaxSwapInterval;
if (interval >= bound) {
interval = bound;
}
else {
bound = surf->Config->MinSwapInterval;
if (interval < bound)
interval = bound;
}
surf->SwapInterval = interval;
}
#ifdef EGL_MESA_screen_surface
static EGLint
_eglParseScreenSurfaceAttribList(_EGLSurface *surf, const EGLint *attrib_list)
{
EGLint i, err = EGL_SUCCESS;
if (!attrib_list)
return EGL_SUCCESS;
for (i = 0; attrib_list[i] != EGL_NONE; i++) {
EGLint attr = attrib_list[i++];
EGLint val = attrib_list[i];
switch (attr) {
case EGL_WIDTH:
if (val < 0) {
err = EGL_BAD_PARAMETER;
break;
}
surf->Width = val;
break;
case EGL_HEIGHT:
if (val < 0) {
err = EGL_BAD_PARAMETER;
break;
}
surf->Height = val;
break;
default:
err = EGL_BAD_ATTRIBUTE;
break;
}
if (err != EGL_SUCCESS) {
_eglLog(_EGL_WARNING, "bad surface attribute 0x%04x", attr);
break;
}
}
return err;
}
#endif /* EGL_MESA_screen_surface */
/**
* Parse the list of surface attributes and return the proper error code.
*/
static EGLint
_eglParseSurfaceAttribList(_EGLSurface *surf, const EGLint *attrib_list)
{
_EGLDisplay *dpy = surf->Resource.Display;
EGLint type = surf->Type;
EGLint texture_type = EGL_PBUFFER_BIT;
EGLint i, err = EGL_SUCCESS;
if (!attrib_list)
return EGL_SUCCESS;
#ifdef EGL_MESA_screen_surface
if (type == EGL_SCREEN_BIT_MESA)
return _eglParseScreenSurfaceAttribList(surf, attrib_list);
#endif
if (dpy->Extensions.NOK_texture_from_pixmap)
texture_type |= EGL_PIXMAP_BIT;
for (i = 0; attrib_list[i] != EGL_NONE; i++) {
EGLint attr = attrib_list[i++];
EGLint val = attrib_list[i];
switch (attr) {
/* common attributes */
case EGL_VG_COLORSPACE:
switch (val) {
case EGL_VG_COLORSPACE_sRGB:
case EGL_VG_COLORSPACE_LINEAR:
break;
default:
err = EGL_BAD_ATTRIBUTE;
break;
}
if (err != EGL_SUCCESS)
break;
surf->VGColorspace = val;
break;
case EGL_VG_ALPHA_FORMAT:
switch (val) {
case EGL_VG_ALPHA_FORMAT_NONPRE:
case EGL_VG_ALPHA_FORMAT_PRE:
break;
default:
err = EGL_BAD_ATTRIBUTE;
break;
}
if (err != EGL_SUCCESS)
break;
surf->VGAlphaFormat = val;
break;
/* window surface attributes */
case EGL_RENDER_BUFFER:
if (type != EGL_WINDOW_BIT) {
err = EGL_BAD_ATTRIBUTE;
break;
}
if (val != EGL_BACK_BUFFER && val != EGL_SINGLE_BUFFER) {
err = EGL_BAD_ATTRIBUTE;
break;
}
surf->RenderBuffer = val;
break;
/* pbuffer surface attributes */
case EGL_WIDTH:
if (type != EGL_PBUFFER_BIT) {
err = EGL_BAD_ATTRIBUTE;
break;
}
if (val < 0) {
err = EGL_BAD_PARAMETER;
break;
}
surf->Width = val;
break;
case EGL_HEIGHT:
if (type != EGL_PBUFFER_BIT) {
err = EGL_BAD_ATTRIBUTE;
break;
}
if (val < 0) {
err = EGL_BAD_PARAMETER;
break;
}
surf->Height = val;
break;
case EGL_LARGEST_PBUFFER:
if (type != EGL_PBUFFER_BIT) {
err = EGL_BAD_ATTRIBUTE;
break;
}
surf->LargestPbuffer = !!val;
break;
/* for eglBindTexImage */
case EGL_TEXTURE_FORMAT:
if (!(type & texture_type)) {
err = EGL_BAD_ATTRIBUTE;
break;
}
switch (val) {
case EGL_TEXTURE_RGB:
case EGL_TEXTURE_RGBA:
case EGL_NO_TEXTURE:
break;
default:
err = EGL_BAD_ATTRIBUTE;
break;
}
if (err != EGL_SUCCESS)
break;
surf->TextureFormat = val;
break;
case EGL_TEXTURE_TARGET:
if (!(type & texture_type)) {
err = EGL_BAD_ATTRIBUTE;
break;
}
switch (val) {
case EGL_TEXTURE_2D:
case EGL_NO_TEXTURE:
break;
default:
err = EGL_BAD_ATTRIBUTE;
break;
}
if (err != EGL_SUCCESS)
break;
surf->TextureTarget = val;
break;
case EGL_MIPMAP_TEXTURE:
if (!(type & texture_type)) {
err = EGL_BAD_ATTRIBUTE;
break;
}
surf->MipmapTexture = !!val;
break;
/* no pixmap surface specific attributes */
default:
err = EGL_BAD_ATTRIBUTE;
break;
}
if (err != EGL_SUCCESS) {
_eglLog(_EGL_WARNING, "bad surface attribute 0x%04x", attr);
break;
}
}
return err;
}
/**
* Do error check on parameters and initialize the given _EGLSurface object.
* \return EGL_TRUE if no errors, EGL_FALSE otherwise.
*/
EGLBoolean
_eglInitSurface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
_EGLConfig *conf, const EGLint *attrib_list)
{
const char *func;
EGLint renderBuffer = EGL_BACK_BUFFER;
EGLint err;
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;
#ifdef EGL_MESA_screen_surface
case EGL_SCREEN_BIT_MESA:
func = "eglCreateScreenSurface";
renderBuffer = EGL_SINGLE_BUFFER; /* XXX correct? */
break;
#endif
default:
_eglLog(_EGL_WARNING, "Bad type in _eglInitSurface");
return EGL_FALSE;
}
if ((conf->SurfaceType & type) == 0) {
/* The config can't be used to create a surface of this type */
_eglError(EGL_BAD_CONFIG, func);
return EGL_FALSE;
}
_eglInitResource(&surf->Resource, sizeof(*surf), dpy);
surf->Type = type;
surf->Config = conf;
surf->Width = 0;
surf->Height = 0;
surf->TextureFormat = EGL_NO_TEXTURE;
surf->TextureTarget = EGL_NO_TEXTURE;
surf->MipmapTexture = EGL_FALSE;
surf->LargestPbuffer = EGL_FALSE;
surf->RenderBuffer = renderBuffer;
surf->VGAlphaFormat = EGL_VG_ALPHA_FORMAT_NONPRE;
surf->VGColorspace = EGL_VG_COLORSPACE_sRGB;
surf->MipmapLevel = 0;
surf->MultisampleResolve = EGL_MULTISAMPLE_RESOLVE_DEFAULT;
surf->SwapBehavior = EGL_BUFFER_DESTROYED;
surf->HorizontalResolution = EGL_UNKNOWN;
surf->VerticalResolution = EGL_UNKNOWN;
surf->AspectRatio = EGL_UNKNOWN;
/* the default swap interval is 1 */
_eglClampSwapInterval(surf, 1);
err = _eglParseSurfaceAttribList(surf, attrib_list);
if (err != EGL_SUCCESS)
return _eglError(err, func);
return EGL_TRUE;
}
EGLBoolean
_eglQuerySurface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surface,
EGLint attribute, EGLint *value)
{
switch (attribute) {
case EGL_WIDTH:
*value = surface->Width;
break;
case EGL_HEIGHT:
*value = surface->Height;
break;
case EGL_CONFIG_ID:
*value = surface->Config->ConfigID;
break;
case EGL_LARGEST_PBUFFER:
*value = surface->LargestPbuffer;
break;
case EGL_TEXTURE_FORMAT:
/* texture attributes: only for pbuffers, no error otherwise */
if (surface->Type == EGL_PBUFFER_BIT)
*value = surface->TextureFormat;
break;
case EGL_TEXTURE_TARGET:
if (surface->Type == EGL_PBUFFER_BIT)
*value = surface->TextureTarget;
break;
case EGL_MIPMAP_TEXTURE:
if (surface->Type == EGL_PBUFFER_BIT)
*value = surface->MipmapTexture;
break;
case EGL_MIPMAP_LEVEL:
if (surface->Type == EGL_PBUFFER_BIT)
*value = surface->MipmapLevel;
break;
case EGL_SWAP_BEHAVIOR:
*value = surface->SwapBehavior;
break;
case EGL_RENDER_BUFFER:
*value = surface->RenderBuffer;
break;
case EGL_PIXEL_ASPECT_RATIO:
*value = surface->AspectRatio;
break;
case EGL_HORIZONTAL_RESOLUTION:
*value = surface->HorizontalResolution;
break;
case EGL_VERTICAL_RESOLUTION:
*value = surface->VerticalResolution;
break;
case EGL_MULTISAMPLE_RESOLVE:
*value = surface->MultisampleResolve;
break;
case EGL_VG_ALPHA_FORMAT:
*value = surface->VGAlphaFormat;
break;
case EGL_VG_COLORSPACE:
*value = surface->VGColorspace;
break;
default:
_eglError(EGL_BAD_ATTRIBUTE, "eglQuerySurface");
return EGL_FALSE;
}
return EGL_TRUE;
}
/**
* Default fallback routine - drivers might override this.
*/
EGLBoolean
_eglSurfaceAttrib(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surface,
EGLint attribute, EGLint value)
{
EGLint confval;
EGLint err = EGL_SUCCESS;
switch (attribute) {
case EGL_MIPMAP_LEVEL:
confval = surface->Config->RenderableType;
if (!(confval & (EGL_OPENGL_ES_BIT | EGL_OPENGL_ES2_BIT))) {
err = EGL_BAD_PARAMETER;
break;
}
surface->MipmapLevel = value;
break;
case EGL_MULTISAMPLE_RESOLVE:
switch (value) {
case EGL_MULTISAMPLE_RESOLVE_DEFAULT:
break;
case EGL_MULTISAMPLE_RESOLVE_BOX:
confval = surface->Config->SurfaceType;
if (!(confval & EGL_MULTISAMPLE_RESOLVE_BOX_BIT))
err = EGL_BAD_MATCH;
break;
default:
err = EGL_BAD_ATTRIBUTE;
break;
}
if (err != EGL_SUCCESS)
break;
surface->MultisampleResolve = value;
break;
case EGL_SWAP_BEHAVIOR:
switch (value) {
case EGL_BUFFER_DESTROYED:
break;
case EGL_BUFFER_PRESERVED:
confval = surface->Config->SurfaceType;
if (!(confval & EGL_SWAP_BEHAVIOR_PRESERVED_BIT))
err = EGL_BAD_MATCH;
break;
default:
err = EGL_BAD_ATTRIBUTE;
break;
}
if (err != EGL_SUCCESS)
break;
surface->SwapBehavior = value;
break;
default:
err = EGL_BAD_ATTRIBUTE;
break;
}
if (err != EGL_SUCCESS)
return _eglError(err, "eglSurfaceAttrib");
return EGL_TRUE;
}
EGLBoolean
_eglBindTexImage(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surface,
EGLint buffer)
{
EGLint texture_type = EGL_PBUFFER_BIT;
/* Just do basic error checking and return success/fail.
* Drivers must implement the real stuff.
*/
if (dpy->Extensions.NOK_texture_from_pixmap)
texture_type |= EGL_PIXMAP_BIT;
if (!(surface->Type & texture_type)) {
_eglError(EGL_BAD_SURFACE, "eglBindTexImage");
return EGL_FALSE;
}
if (surface->TextureFormat == EGL_NO_TEXTURE) {
_eglError(EGL_BAD_MATCH, "eglBindTexImage");
return EGL_FALSE;
}
if (surface->TextureTarget == EGL_NO_TEXTURE) {
_eglError(EGL_BAD_MATCH, "eglBindTexImage");
return EGL_FALSE;
}
if (buffer != EGL_BACK_BUFFER) {
_eglError(EGL_BAD_PARAMETER, "eglBindTexImage");
return EGL_FALSE;
}
surface->BoundToTexture = EGL_TRUE;
return EGL_TRUE;
}
EGLBoolean
_eglSwapInterval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
EGLint interval)
{
_eglClampSwapInterval(surf, interval);
return EGL_TRUE;
}
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