d3d10core: Add a DXBC parser.
Henri Verbeet
hverbeet at codeweavers.com
Mon Mar 30 04:24:54 CDT 2009
We may want to push this into either wined3d or our future shader compiler
dll. It's not a whole lot of code though.
---
dlls/d3d10core/d3d10core_private.h | 23 +++++++++++++
dlls/d3d10core/utils.c | 65 ++++++++++++++++++++++++++++++++++++
2 files changed, 88 insertions(+), 0 deletions(-)
diff --git a/dlls/d3d10core/d3d10core_private.h b/dlls/d3d10core/d3d10core_private.h
index 9703821..ff723ba 100644
--- a/dlls/d3d10core/d3d10core_private.h
+++ b/dlls/d3d10core/d3d10core_private.h
@@ -34,6 +34,11 @@
#include "wine/wined3d.h"
#include "wine/winedxgi.h"
+#define MAKE_TAG(ch0, ch1, ch2, ch3) \
+ ((DWORD)(ch0) | ((DWORD)(ch1) << 8) | \
+ ((DWORD)(ch2) << 16) | ((DWORD)(ch3) << 24 ))
+#define TAG_DXBC MAKE_TAG('D', 'X', 'B', 'C')
+
/* TRACE helper functions */
const char *debug_d3d10_primitive_topology(D3D10_PRIMITIVE_TOPOLOGY topology);
const char *debug_dxgi_format(DXGI_FORMAT format);
@@ -41,6 +46,24 @@ const char *debug_dxgi_format(DXGI_FORMAT format);
DXGI_FORMAT dxgi_format_from_wined3dformat(WINED3DFORMAT format);
WINED3DFORMAT wined3dformat_from_dxgi_format(DXGI_FORMAT format);
+static inline void read_dword(const char **ptr, DWORD *d)
+{
+ memcpy(d, *ptr, sizeof(*d));
+ *ptr += sizeof(*d);
+}
+
+void skip_dword_unknown(const char **ptr, unsigned int count);
+
+static inline void read_tag(const char **ptr, DWORD *t, char t_str[5])
+{
+ read_dword(ptr, t);
+ memcpy(t_str, t, 4);
+ t_str[4] = '\0';
+}
+
+HRESULT parse_dxbc(const char *data, SIZE_T data_size,
+ HRESULT (*chunk_handler)(const char *data, DWORD data_size, DWORD tag, void *ctx), void *ctx);
+
/* IDirect3D10Device */
extern const struct ID3D10DeviceVtbl d3d10_device_vtbl;
extern const struct IUnknownVtbl d3d10_device_inner_unknown_vtbl;
diff --git a/dlls/d3d10core/utils.c b/dlls/d3d10core/utils.c
index b3e5fef..29f1e7a 100644
--- a/dlls/d3d10core/utils.c
+++ b/dlls/d3d10core/utils.c
@@ -344,3 +344,68 @@ WINED3DFORMAT wined3dformat_from_dxgi_format(DXGI_FORMAT format)
return WINED3DFMT_UNKNOWN;
}
}
+
+void skip_dword_unknown(const char **ptr, unsigned int count)
+{
+ unsigned int i;
+ DWORD d;
+
+ FIXME("Skipping %u unknown DWORDs:\n", count);
+ for (i = 0; i < count; ++i)
+ {
+ read_dword(ptr, &d);
+ FIXME("\t0x%08x\n", d);
+ }
+}
+
+HRESULT parse_dxbc(const char *data, SIZE_T data_size,
+ HRESULT (*chunk_handler)(const char *data, DWORD data_size, DWORD tag, void *ctx), void *ctx)
+{
+ const char *ptr = data;
+ HRESULT hr = S_OK;
+ DWORD chunk_count;
+ DWORD total_size;
+ char tag_str[5];
+ unsigned int i;
+ DWORD tag;
+
+ read_tag(&ptr, &tag, tag_str);
+ TRACE("tag: %s\n", tag_str);
+
+ if (tag != TAG_DXBC)
+ {
+ WARN("Wrong tag.\n");
+ return E_FAIL;
+ }
+
+ /* checksum? */
+ skip_dword_unknown(&ptr, 4);
+
+ skip_dword_unknown(&ptr, 1);
+
+ read_dword(&ptr, &total_size);
+ TRACE("total size: %#x\n", total_size);
+
+ read_dword(&ptr, &chunk_count);
+ TRACE("chunk count: %#x\n", chunk_count);
+
+ for (i = 0; i < chunk_count; ++i)
+ {
+ DWORD chunk_tag, chunk_size;
+ const char *chunk_ptr;
+ DWORD chunk_offset;
+
+ read_dword(&ptr, &chunk_offset);
+ TRACE("chunk %u at offset %#x\n", i, chunk_offset);
+
+ chunk_ptr = data + chunk_offset;
+
+ read_dword(&chunk_ptr, &chunk_tag);
+ read_dword(&chunk_ptr, &chunk_size);
+
+ hr = chunk_handler(chunk_ptr, chunk_size, chunk_tag, ctx);
+ if (FAILED(hr)) break;
+ }
+
+ return hr;
+}
--
1.6.0.6
--------------000404010304060702080102--
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