bool
WebGLContext::ValidateBufferForTarget(GLenum target, WebGLBuffer* buffer,
const char* info)
{
if (!buffer)
return true;
/* https://www.khronos.org/registry/webgl/specs/latest/2.0/#5.1
*
* In the WebGL 2 API, buffers have their WebGL buffer type
* initially set to undefined. Calling bindBuffer, bindBufferRange
* or bindBufferBase with the target argument set to any buffer
* binding point except COPY_READ_BUFFER or COPY_WRITE_BUFFER will
* then set the WebGL buffer type of the buffer being bound
* according to the table above.
*
* Any call to one of these functions which attempts to bind a
* WebGLBuffer that has the element array WebGL buffer type to a
* binding point that falls under other data, or bind a
* WebGLBuffer which has the other data WebGL buffer type to
* ELEMENT_ARRAY_BUFFER will generate an INVALID_OPERATION error,
* and the state of the binding point will remain untouched.
*/
GLenum boundTo = GetCurrentBinding(buffer);
if (boundTo != LOCAL_GL_NONE) {
if (target == LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER &&
boundTo != LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER)
{
ErrorInvalidOperation("Can't bind buffer to TRANSFORM_FEEDBACK_BUFFER as the "
"buffer is already bound to another bind point.");
return false;
}
else if (target != LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER &&
boundTo == LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER)
{
ErrorInvalidOperation("Can't bind buffer to bind point as it is currently "
"bound to TRANSFORM_FEEDBACK_BUFFER.");
return false;
}
}
WebGLBuffer::Kind content = buffer->Content();
if (content == WebGLBuffer::Kind::Undefined)
return true;
switch (target) {
case LOCAL_GL_COPY_READ_BUFFER:
case LOCAL_GL_COPY_WRITE_BUFFER:
return true;
case LOCAL_GL_ELEMENT_ARRAY_BUFFER:
if (content == WebGLBuffer::Kind::ElementArray)
return true;
break;
case LOCAL_GL_ARRAY_BUFFER:
case LOCAL_GL_PIXEL_PACK_BUFFER:
case LOCAL_GL_PIXEL_UNPACK_BUFFER:
case LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER:
case LOCAL_GL_UNIFORM_BUFFER:
if (content == WebGLBuffer::Kind::OtherData)
return true;
break;
default:
MOZ_CRASH();
}
ErrorInvalidOperation("%s: buffer already contains %s data.", info,
content == WebGLBuffer::Kind::OtherData ? "other" : "element");
return false;
}
struct ISAPNPBase* ASMCALL
initRoutine( REG( d0, struct ISAPNPBase* res ),
REG( a0, APTR seglist ),
REG( a6, struct ExecBase* sysbase ) )
{
SysBase = sysbase;
if( ! OpenLibs() )
{
// No libraries?
Req( "Failed to open required libraries." );
}
else
{
ULONG actual;
struct CurrentBinding current_binding;
actual = GetCurrentBinding( ¤t_binding,
sizeof( current_binding ) );
if( actual < sizeof( current_binding ) )
{
// No legal CurrentBinding structure
Req( "No legal CurrentBinding structure found." );
}
else
{
struct ConfigDev* cd = current_binding.cb_ConfigDev;
if( cd == NULL )
{
// No card found
Req( "No bridge card found." );
}
else
{
if( cd->cd_Rom.er_Manufacturer != 2150 ||
cd->cd_Rom.er_Product != 1 )
{
// Unsupported ISA bridge
Req( "Unsupported ISA bridge: %ld/%ld.\n"
"Only the GG2 Bus+ card is supported.",
cd->cd_Rom.er_Manufacturer,
cd->cd_Rom.er_Product );
}
else
{
if( cd->cd_BoardAddr == NULL )
{
// No board address?
Req( "No board address?" );
}
else
{
// Set up the ISAPNPBase structure
res->m_Library.lib_Node.ln_Type = NT_RESOURCE;
res->m_Library.lib_Node.ln_Name = (STRPTR) ResName;
res->m_Library.lib_Flags = LIBF_SUMUSED | LIBF_CHANGED;
res->m_Library.lib_Version = VERSION;
res->m_Library.lib_Revision = REVISION;
res->m_Library.lib_IdString = (STRPTR) IDString;
NewList( &res->m_Cards );
res->m_Base = cd->cd_BoardAddr;
res->m_RegReadData = 0x0000;
res->m_ConfigDev = cd;
if( ! ISAPNP_ScanCards( res ) )
{
// No cards found
Req( "No PnP ISA cards found." );
FreeISAPNPBase( res );
}
else
{
struct ISAPNP_Card* card;
card = ISAPNP_AllocCard( res );
if( card == NULL )
{
Req( "Out of memory!" );
FreeISAPNPBase( res );
}
else
{
static const char descr[] = "Non-PnP devices";
char* d;
d = AllocVec( sizeof( descr ), MEMF_PUBLIC );
if( d != NULL )
{
CopyMem( (void*) descr, d, sizeof( descr ) );
card->isapnpc_Node.ln_Name = d;
}
card->isapnpc_ID.isapnpid_Vendor[ 0 ] = '?';
card->isapnpc_ID.isapnpid_Vendor[ 1 ] = '?';
card->isapnpc_ID.isapnpid_Vendor[ 2 ] = '?';
card->isapnpc_SerialNumber = -1;
// Add *first*
AddHead( &res->m_Cards, (struct Node*) card );
// Let's see if we're to disable any cards or devices etc
if( ! HandleToolTypes( current_binding.cb_ToolTypes,
card, res ) )
{
// Error requester already displayed.
FreeISAPNPBase( res );
}
else
{
if( ! ISAPNP_ConfigureCards( res ) )
{
// Unable to configure cards
Req( "Unable to configure the cards. This is most likely\n"
"because of an unresolvable hardware conflict.\n\n"
"Use the DISABLE_DEVICE tool type to disable one of\n"
"the devices in conflict." );
FreeISAPNPBase( res );
}
else
{
cd->cd_Flags &= ~CDF_CONFIGME;
cd->cd_Driver = res;
ISAPNPBase = res;
}
}
}
}
}
}
}
}
}
return ISAPNPBase;
}
