This allows us to calculate the triangle's area using fixed point,
previously it was cacluated in floating point space. It was possible
that a triangle which had negative area in floating point space had
a positive area in fixed point space.
Fixes fdo 40920.
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
This is not necessarily the product of MAX_BLOCK_SIZE[i].
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
As pointed out by Marek, if we have only one cb, we may as well add this
single register write here rather than adding it in the draw loop.
Reviewed-by: Marek Olšák <maraeo@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Vertex and index buffers are never used by hardware, only by Draw.
SWTCL chipsets usually have very little memory, so this might help
with stability and reliability.
Instead of having to hack the code to enable these debugging options,
set them through the MESA_DEBUG env var.
Reviewed-by: Eric Anholt <eric@anholt.net>
This flag has been around for a while but it wasn't actually used anywhere.
Now, setting this flag causes a glFlush() to be issued after each
drawing call (including glBegin/End, glDrawElements, glDrawArrays,
glDrawPixels, glCopyPixels and glBitmap).
This was being done in the _mesa_Flush/Finish() calls but if there
was an internal call to _mesa_flush/finish() the FLUSH_VERTICES()
wouldn't happen. Looks like only the intel and radeon drivers made
such calls in MakeCurrent().
When glColorMaterial() is used to latch glColor commands to a material
attribute, glMaterial calls to change that material should become no-ops.
This failed to work properly when the glMaterial call was inside a
display list.
This removes the Material function from the vbo_attrib_tmp.h template
file. We have separate/different implementations for the "save" and
"exec" cases now.
NOTE: This is a candidate for the 8.0 branch.
_mesa_material_bitmask() will record a GL error and return 0 if
face or mode are illegal. Return early in that case.
NOTE: This is a candidate for the 8.0 branch.
