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mesa GetTexImage: handle signed/unsigned integer clamping

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Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Jordan Justen 2012-06-25 14:15:31 -07:00
parent 7ef270867c
commit 7208505d30
1 changed files with 12 additions and 4 deletions
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16
src/mesa/main/texgetimage.c
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@ -306,7 +306,8 @@ get_tex_rgba_uncompressed(struct gl_context *ctx, GLuint dimensions,
GLuint img, row;
GLfloat (*rgba)[4];
GLuint (*rgba_uint)[4];
GLboolean is_integer = _mesa_is_format_integer_color(texImage->TexFormat);
GLboolean tex_is_integer = _mesa_is_format_integer_color(texImage->TexFormat);
GLboolean tex_is_uint = _mesa_is_format_unsigned(texImage->TexFormat);
/* Allocate buffer for one row of texels */
rgba = (GLfloat (*)[4]) malloc(4 * width * sizeof(GLfloat));
@ -358,12 +359,19 @@ get_tex_rgba_uncompressed(struct gl_context *ctx, GLuint dimensions,
width, height, format, type,
img, row, 0);
if (is_integer) {
if (tex_is_integer) {
_mesa_unpack_uint_rgba_row(texFormat, width, src, rgba_uint);
if (rebaseFormat)
_mesa_rebase_rgba_uint(width, rgba_uint, rebaseFormat);
_mesa_pack_rgba_span_from_uints(ctx, width, rgba_uint,
format, type, dest);
if (tex_is_uint) {
_mesa_pack_rgba_span_from_uints(ctx, width,
(GLuint (*)[4]) rgba_uint,
format, type, dest);
} else {
_mesa_pack_rgba_span_from_ints(ctx, width,
(GLint (*)[4]) rgba_uint,
format, type, dest);
}
} else {
_mesa_unpack_rgba_row(texFormat, width, src, rgba);
if (rebaseFormat)