Skip to content

Commit

Permalink
Extract useful information from the ctab.
Browse files Browse the repository at this point in the history 
--HG--
branch : trunk
  • Loading branch information
@icculus
icculus committed Jun 25, 2008
1 parent 58c803a commit 082d30e
Showing 1 changed file with 41 additions and 72 deletions.
113 changes: 41 additions & 72 deletions mojoshader.c
View file
Expand Up @@ -244,6 +244,13 @@ typedef struct OutputList
OutputListNode *tail;
} OutputList;

typedef struct VariableList
{
MOJOSHADER_uniformType type;
int index;
int count;
struct VariableList *next;
} VariableList;

typedef struct RegisterList
{
Expand Down Expand Up @@ -392,6 +399,8 @@ struct Context
RegisterList attributes;
int sampler_count;
RegisterList samplers;
VariableList *variables; // variables to register mapping.
int have_ctab:1;
int predicated:1;
int uniform_array:1;
int support_nv2:1;
Expand Down Expand Up @@ -6250,7 +6259,6 @@ static void parse_constant_table(Context *ctx, const uint32 bytes)
const uint32 version = SWAP32(ctx->tokens[4]);
const uint32 constants = SWAP32(ctx->tokens[5]);
const uint32 constantinfo = SWAP32(ctx->tokens[6]);
const uint32 flags = SWAP32(ctx->tokens[7]);
const uint32 target = SWAP32(ctx->tokens[8]);
uint32 i = 0;

Expand All @@ -6265,98 +6273,47 @@ static void parse_constant_table(Context *ctx, const uint32 bytes)
if ((constantinfo + (constants * 20)) >= bytes) goto corrupt_ctab;
if (target >= bytes) goto corrupt_ctab;

fprintf(stderr, "\n");
fprintf(stderr, "CTAB:\n");
fprintf(stderr, " - Flags: 0x%X\n", (uint) flags);
// !!! FIXME: malicious data may not be null-terminated.
fprintf(stderr, " - Creator: %s\n", (const char *) (start + creator));
// !!! FIXME: malicious data may not be null-terminated.
fprintf(stderr, " - Target: %s\n", (const char *) (start + target));
fprintf(stderr, "\n");
ctx->have_ctab = 1;

for (i = 0; i < constants; i++)
{
// we only care about deciding which variables might be arrays at
// the moment, but there's lots of other good info in the CTAB.
const uint8 *ptr = start + constantinfo + (i * 20);
const uint32 name = SWAP32(*((uint32 *) (ptr + 0)));
const uint16 regset = SWAP16(*((uint16 *) (ptr + 4)));
const uint16 regidx = SWAP16(*((uint16 *) (ptr + 6)));
const uint16 regcnt = SWAP16(*((uint16 *) (ptr + 8)));
const uint16 reserved = SWAP16(*((uint16 *) (ptr + 10)));
const uint32 typeinf = SWAP32(*((uint32 *) (ptr + 12)));
const uint32 defval = SWAP32(*((uint32 *) (ptr + 16)));
MOJOSHADER_uniformType mojotype = MOJOSHADER_UNIFORM_UNKNOWN;

if (name >= bytes) goto corrupt_ctab;
if ((typeinf + 16) >= bytes) goto corrupt_ctab;
if (defval >= bytes) goto corrupt_ctab;

fprintf(stderr, "ConstantInfo #%u:\n", (uint) i);

// !!! FIXME: malicious data may not be null-terminated.
fprintf(stderr, " - Name: %s\n", (const char *) (start + name));

switch (regset)
{
case 0: fprintf(stderr, " - Register set: BOOL\n"); break;
case 1: fprintf(stderr, " - Register set: INT4\n"); break;
case 2: fprintf(stderr, " - Register set: FLOAT4\n"); break;
case 3: fprintf(stderr, " - Register set: SAMPLER\n"); break;
default: goto corrupt_ctab;
} // switch

fprintf(stderr, " - Register index: %u\n", (uint) regidx);
fprintf(stderr, " - Register count: %u\n", (uint) regcnt);
fprintf(stderr, " - Reserved: %u\n", (uint) reserved);

ptr = start + typeinf;
const uint16 typeclass = SWAP16(*((uint16 *) (ptr + 0)));
const uint16 typetype = SWAP16(*((uint16 *) (ptr + 2)));
const uint16 rows = SWAP16(*((uint16 *) (ptr + 4)));
const uint16 columns = SWAP16(*((uint16 *) (ptr + 6)));
const uint16 elements = SWAP16(*((uint16 *) (ptr + 8)));
const uint16 members = SWAP16(*((uint16 *) (ptr + 10)));
//const uint32 memberinfo = SWAP32(*((uint32 *) (ptr + 12)));

switch (typeclass)
{
case 0: fprintf(stderr, " - Parameter class: SCALAR\n"); break;
case 1: fprintf(stderr, " - Parameter class: VECTOR\n"); break;
case 2: fprintf(stderr, " - Parameter class: MATRIX_ROWS\n"); break;
case 3: fprintf(stderr, " - Parameter class: MATRIX_COLUMNS\n"); break;
case 4: fprintf(stderr, " - Parameter class: OBJECT\n"); break;
case 5: fprintf(stderr, " - Parameter class: STRUCT\n"); break;
case 0: mojotype = MOJOSHADER_UNIFORM_BOOL; break;
case 1: mojotype = MOJOSHADER_UNIFORM_INT; break;
case 2: mojotype = MOJOSHADER_UNIFORM_FLOAT; break;
case 3: /* SAMPLER */ break;
default: goto corrupt_ctab;
} // switch

switch (typetype)
if (mojotype != MOJOSHADER_UNIFORM_UNKNOWN)
{
case 0: fprintf(stderr, " - Parameter type: VOID\n"); break;
case 1: fprintf(stderr, " - Parameter type: BOOL\n"); break;
case 2: fprintf(stderr, " - Parameter type: INT\n"); break;
case 3: fprintf(stderr, " - Parameter type: FLOAT\n"); break;
case 4: fprintf(stderr, " - Parameter type: STRING\n"); break;
case 5: fprintf(stderr, " - Parameter type: TEXTURE\n"); break;
case 6: fprintf(stderr, " - Parameter type: TEXTURE1D\n"); break;
case 7: fprintf(stderr, " - Parameter type: TEXTURE2D\n"); break;
case 8: fprintf(stderr, " - Parameter type: TEXTURE3D\n"); break;
case 9: fprintf(stderr, " - Parameter type: TEXTURECUBE\n"); break;
case 10: fprintf(stderr, " - Parameter type: SAMPLER\n"); break;
case 11: fprintf(stderr, " - Parameter type: SAMPLER1D\n"); break;
case 12: fprintf(stderr, " - Parameter type: SAMPLER2D\n"); break;
case 13: fprintf(stderr, " - Parameter type: SAMPLER3D\n"); break;
case 14: fprintf(stderr, " - Parameter type: SAMPLERCUBE\n"); break;
case 15: fprintf(stderr, " - Parameter type: PIXELSHADER\n"); break;
case 16: fprintf(stderr, " - Parameter type: VERTEXSHADER\n"); break;
case 17: fprintf(stderr, " - Parameter type: PIXELFRAGMENT\n"); break;
case 18: fprintf(stderr, " - Parameter type: VERTEXFRAGMENT\n"); break;
case 19: fprintf(stderr, " - Parameter type: UNSUPPORTED\n"); break;
default: goto corrupt_ctab;
} // switch

fprintf(stderr, " - Rows: %u\n", (uint) rows);
fprintf(stderr, " - Columns: %u\n", (uint) columns);
fprintf(stderr, " - Elements: %u\n", (uint) elements);
fprintf(stderr, " - Members: %u\n", (uint) members);
// !!! FIXME: memberinfo is recursive: it points to a typeinfo.
VariableList *item;
item = (VariableList *) Malloc(ctx, sizeof (VariableList));
if (item != NULL)
{
item->type = mojotype;
item->index = regidx;
item->count = regcnt;
item->next = ctx->variables;
ctx->variables = item;
} // if
} // if
} // for

return;
Expand Down Expand Up @@ -6537,6 +6494,17 @@ static void free_constants_list(MOJOSHADER_free f, void *d, ConstantsList *item)
} // free_constants_list


static void free_variable_list(MOJOSHADER_free f, void *d, VariableList *item)
{
while (item != NULL)
{
VariableList *next = item->next;
f(item, d);
item = next;
} // while
} // free_variable_list


static void destroy_context(Context *ctx)
{
if (ctx != NULL)
Expand All @@ -6557,6 +6525,7 @@ static void destroy_context(Context *ctx)
free_reglist(f, d, ctx->uniforms.next);
free_reglist(f, d, ctx->attributes.next);
free_reglist(f, d, ctx->samplers.next);
free_variable_list(f, d, ctx->variables);
if ((ctx->failstr != NULL) && (ctx->failstr != out_of_mem_str))
f((void *) ctx->failstr, d);
f(ctx, d);
Expand Down

0 comments on commit 082d30e

Please sign in to comment.