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GL_EXT_debug_printf implementation

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This commit is contained in:
Jeff Bolz 2019-05-31 13:06:01 -05:00
parent c6a4c6d3d8
commit 04d73731de
28 changed files with 4030 additions and 3794 deletions
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76
glslang/MachineIndependent/preprocessor/PpScanner.cpp Executable file → Normal file
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@ -1026,12 +1026,74 @@ int TPpContext::tStringInput::scan(TPpToken* ppToken)
case '\'':
return pp->characterLiteral(ppToken);
case '"':
// TODO: If this gets enhanced to handle escape sequences, or
// anything that is different than what #include needs, then
// #include needs to use scanHeaderName() for this.
// #include uses scanHeaderName() to ignore these escape sequences.
ch = getch();
while (ch != '"' && ch != '\n' && ch != EndOfInput) {
if (len < MaxTokenLength) {
if (ch == '\\') {
int nextCh = getch();
switch (nextCh) {
case '\'': ch = 0x27; break;
case '"': ch = 0x22; break;
case '?': ch = 0x3f; break;
case '\\': ch = 0x5c; break;
case 'a': ch = 0x07; break;
case 'b': ch = 0x08; break;
case 'f': ch = 0x0c; break;
case 'n': ch = 0x0a; break;
case 'r': ch = 0x0d; break;
case 't': ch = 0x09; break;
case 'v': ch = 0x0b; break;
case 'x':
// two character hex value
nextCh = getch();
if (nextCh >= '0' && nextCh <= '9')
nextCh -= '0';
else if (nextCh >= 'A' && nextCh <= 'F')
nextCh -= 'A' - 10;
else if (nextCh >= 'a' && nextCh <= 'f')
nextCh -= 'a' - 10;
else
pp->parseContext.ppError(ppToken->loc, "Expected hex value in escape sequence", "string", "");
ch = nextCh * 0x10;
nextCh = getch();
if (nextCh >= '0' && nextCh <= '9')
nextCh -= '0';
else if (nextCh >= 'A' && nextCh <= 'F')
nextCh -= 'A' - 10;
else if (nextCh >= 'a' && nextCh <= 'f')
nextCh -= 'a' - 10;
else
pp->parseContext.ppError(ppToken->loc, "Expected hex value in escape sequence", "string", "");
ch += nextCh;
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
// three character octal value
nextCh = getch() - '0';
if (nextCh > 3)
pp->parseContext.ppError(ppToken->loc, "Expected octal value in escape sequence", "string", "");
ch = nextCh * 8 * 8;
nextCh = getch() - '0';
if (nextCh > 7)
pp->parseContext.ppError(ppToken->loc, "Expected octal value in escape sequence", "string", "");
ch += nextCh * 8;
nextCh = getch() - '0';
if (nextCh > 7)
pp->parseContext.ppError(ppToken->loc, "Expected octal value in escape sequence", "string", "");
ch += nextCh;
break;
default:
pp->parseContext.ppError(ppToken->loc, "Invalid escape sequence", "string", "");
break;
}
}
ppToken->name[len] = (char)ch;
len++;
ch = getch();
@ -1120,10 +1182,12 @@ int TPpContext::tokenize(TPpToken& ppToken)
continue;
break;
case PpAtomConstString:
// HLSL allows string literals.
// GLSL allows string literals with GL_EXT_debug_printf.
if (ifdepth == 0 && parseContext.intermediate.getSource() != EShSourceHlsl) {
// HLSL allows string literals.
parseContext.ppError(ppToken.loc, "string literals not supported", "\"\"", "");
continue;
parseContext.requireExtensions(ppToken.loc, 1, &E_GL_EXT_debug_printf, "string literal");
if (!parseContext.extensionTurnedOn(E_GL_EXT_debug_printf))
continue;
}
break;
case '\'':