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authorBrian Paul <brian.paul@tungstengraphics.com>2004-10-31 16:35:06 +0000
committerBrian Paul <brian.paul@tungstengraphics.com>2004-10-31 16:35:06 +0000
commit1c868139226c07b1537e1951ad237bc070585161 (patch)
tree426864e5a7c4829f902434bd2869e0903f958ada /src
parentb46712ca9d379d9c091f5543500088d82cf9776c (diff)
PBO support for glGetCompressedTexImage().
Diffstat (limited to 'src')
-rw-r--r--src/mesa/main/teximage.c39
1 files changed, 37 insertions, 2 deletions
diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 726ba37d9b..4d8780d3ba 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -1975,8 +1975,12 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format,
return;
}
+ /* XXX - someday the rest of this function should be moved into a
+ * fallback routine called via ctx->Driver.GetTexImage()
+ */
+
if (ctx->Pack.BufferObj->Name) {
- /* pack texture imaage into a PBO */
+ /* pack texture image into a PBO */
GLubyte *buf;
if (!_mesa_validate_pbo_access(&ctx->Pack, texImage->Width,
texImage->Height, texImage->Depth,
@@ -3384,9 +3388,40 @@ _mesa_GetCompressedTexImageARB(GLenum target, GLint level, GLvoid *img)
return;
}
- if (!img)
+ /* XXX - someday the rest of this function should be moved into a
+ * fallback routine called via ctx->Driver.GetCompressedTexImage()
+ */
+
+ if (ctx->Pack.BufferObj->Name) {
+ /* pack texture image into a PBO */
+ GLubyte *buf;
+ if ((const GLubyte *) img + texImage->CompressedSize >
+ (const GLubyte *) ctx->Pack.BufferObj->Size) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetCompressedTexImage(invalid PBO access)");
+ return;
+ }
+ buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
+ GL_WRITE_ONLY_ARB,
+ ctx->Pack.BufferObj);
+ if (!buf) {
+ /* buffer is already mapped - that's an error */
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetCompressedTexImage(PBO is mapped)");
+ return;
+ }
+ img = ADD_POINTERS(buf, img);
+ }
+ else if (!img) {
+ /* not an error */
return;
+ }
/* just memcpy, no pixelstore or pixel transfer */
MEMCPY(img, texImage->Data, texImage->CompressedSize);
+
+ if (ctx->Pack.BufferObj->Name) {
+ ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
+ ctx->Pack.BufferObj);
+ }
}