aboutsummaryrefslogtreecommitdiff
path: root/mesalib/src/mesa/main/teximage.c
diff options
context:
space:
mode:
authormarha <marha@users.sourceforge.net>2011-10-27 08:32:52 +0200
committermarha <marha@users.sourceforge.net>2011-10-27 08:32:52 +0200
commitd662d461634660f5c0f3998b5eb7d7ed3bd5a25f (patch)
treeacb25086e94250ff8edf746705bdffb5551c00d8 /mesalib/src/mesa/main/teximage.c
parent4f005bade376d15ee60e90ca45a831aff9725087 (diff)
downloadvcxsrv-d662d461634660f5c0f3998b5eb7d7ed3bd5a25f.tar.gz
vcxsrv-d662d461634660f5c0f3998b5eb7d7ed3bd5a25f.tar.bz2
vcxsrv-d662d461634660f5c0f3998b5eb7d7ed3bd5a25f.zip
mesa git update 27 okt 2011
Diffstat (limited to 'mesalib/src/mesa/main/teximage.c')
-rw-r--r--mesalib/src/mesa/main/teximage.c67
1 files changed, 64 insertions, 3 deletions
diff --git a/mesalib/src/mesa/main/teximage.c b/mesalib/src/mesa/main/teximage.c
index 798201a60..acf7187fd 100644
--- a/mesalib/src/mesa/main/teximage.c
+++ b/mesalib/src/mesa/main/teximage.c
@@ -2246,6 +2246,45 @@ _mesa_choose_texture_format(struct gl_context *ctx,
return f;
}
+/**
+ * Adjust pixel unpack params and image dimensions to strip off the
+ * texture border.
+ *
+ * Gallium and intel don't support texture borders. They've seldem been used
+ * and seldom been implemented correctly anyway.
+ *
+ * \param unpackNew returns the new pixel unpack parameters
+ */
+static void
+strip_texture_border(GLint *border,
+ GLint *width, GLint *height, GLint *depth,
+ const struct gl_pixelstore_attrib *unpack,
+ struct gl_pixelstore_attrib *unpackNew)
+{
+ assert(*border > 0); /* sanity check */
+
+ *unpackNew = *unpack;
+
+ if (unpackNew->RowLength == 0)
+ unpackNew->RowLength = *width;
+
+ if (depth && unpackNew->ImageHeight == 0)
+ unpackNew->ImageHeight = *height;
+
+ unpackNew->SkipPixels += *border;
+ if (height)
+ unpackNew->SkipRows += *border;
+ if (depth)
+ unpackNew->SkipImages += *border;
+
+ assert(*width >= 3);
+ *width = *width - 2 * *border;
+ if (height && *height >= 3)
+ *height = *height - 2 * *border;
+ if (depth && *depth >= 3)
+ *depth = *depth - 2 * *border;
+ *border = 0;
+}
/**
* Common code to implement all the glTexImage1D/2D/3D functions.
@@ -2258,6 +2297,8 @@ teximage(struct gl_context *ctx, GLuint dims,
const GLvoid *pixels)
{
GLboolean error;
+ struct gl_pixelstore_attrib unpack_no_border;
+ const struct gl_pixelstore_attrib *unpack = &ctx->Unpack;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
@@ -2322,6 +2363,16 @@ teximage(struct gl_context *ctx, GLuint dims,
return; /* error was recorded */
}
+ /* Allow a hardware driver to just strip out the border, to provide
+ * reliable but slightly incorrect hardware rendering instead of
+ * rarely-tested software fallback rendering.
+ */
+ if (border && ctx->Const.StripTextureBorder) {
+ strip_texture_border(&border, &width, &height, &depth, unpack,
+ &unpack_no_border);
+ unpack = &unpack_no_border;
+ }
+
if (ctx->NewState & _NEW_PIXEL)
_mesa_update_state(ctx);
@@ -2354,19 +2405,19 @@ teximage(struct gl_context *ctx, GLuint dims,
case 1:
ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
width, border, format,
- type, pixels, &ctx->Unpack, texObj,
+ type, pixels, unpack, texObj,
texImage);
break;
case 2:
ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
width, height, border, format,
- type, pixels, &ctx->Unpack, texObj,
+ type, pixels, unpack, texObj,
texImage);
break;
case 3:
ctx->Driver.TexImage3D(ctx, target, level, internalFormat,
width, height, depth, border, format,
- type, pixels, &ctx->Unpack, texObj,
+ type, pixels, unpack, texObj,
texImage);
break;
default:
@@ -2662,6 +2713,16 @@ copyteximage(struct gl_context *ctx, GLuint dims,
texObj = _mesa_get_current_tex_object(ctx, target);
+ if (border && ctx->Const.StripTextureBorder) {
+ x += border;
+ width -= border * 2;
+ if (dims == 2) {
+ y += border;
+ height -= border * 2;
+ }
+ border = 0;
+ }
+
_mesa_lock_texture(ctx, texObj);
{
texImage = _mesa_get_tex_image(ctx, texObj, target, level);