i965: Fix reference counting in new basevertex upload code.

In the non-indirect draw case, we call intel_upload_data to upload
gl_BaseVertex.  It makes brw->draw.draw_params_bo point to the upload
buffer, and increments the upload BO reference count.

So, we need to unreference it when making brw->draw.draw_params_bo point
at something else, or else we'll retain a reference to stale upload
buffers and hold on to them forever.

This also means that the indirect case should increment the reference
count on the indirect draw buffer when making brw->draw.draw_params_bo
point at it.  That way, both paths increment the reference count, so
we can safely unreference it every time.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "10.3" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Tested-by: Ian Romanick <ian.d.romanick@intel.com>
i965: Separate gl_InstanceID and gl_VertexID uploading.

We always uploaded them together, mostly out of laziness - both required
an additional vertex element.  However, gl_VertexID now also requires an
additional vertex buffer for storing gl_BaseVertex; for non-indirect
draws this also means uploading (a small amount of) data.  This is extra
overhead we don't need if the shader only uses gl_InstanceID.

In particular, our clear shaders currently use gl_InstanceID for doing
layered clears, but don't need gl_VertexID.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "10.3" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Tested-by: Ian Romanick <ian.d.romanick@intel.com>
i965: Skip allocating UNIFORM file storage for uniforms of size 0.

Samplers take up zero slots and therefore don't exist in the params
array, nor are they included in stage_prog_data->nr_params.  There's no
need to store their size in param_size, as it's only used for dealing
with arrays of "real" uniforms (ones uploaded as shader constants).

We run into all kinds of problems trying to refer to the uniform storage
for variables that don't have uniform storage.  For one, we may use some
other variable's index, or access out of bounds in arrays.  In the FS
backend, our extra 2 * MaxSamplerImageUnits params for texture rectangle
rescaling paper over a lot of problems.  In the VS backend, we claim
samplers take up a slot, which also papers over problems.

Instead, just skip allocating storage for variables that don't have any.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Tested-by: Ian Romanick <ian.d.romanick@intel.com>
i965/vec4: Make type_size() return 0 for samplers.

The FS backend has always used 0, and the VS backend has always used 1.
I think 1 is just working around other problems, and is incorrect.
Samplers are baked in; nothing uses the UNIFORM register we would
create, and we shouldn't upload any constant values for them.

Fixes ES3-CTS.shaders.struct.uniform.sampler_array_vertex.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Tested-by: Ian Romanick <ian.d.romanick@intel.com>
glsl: Speed up constant folding for swizzles.

ir_rvalue::constant_expression_value() recursively walks down an IR
tree, attempting to reduce it to a single constant value.  This is
useful when you want to know whether a variable has a constant
expression value at all, and if so, what it is.

The constant folding optimization pass attempts to replace rvalues with
their constant expression value from the bottom up.  That way, we can
optimize subexpressions, and ideally stop as soon as we find a
non-constant subexpression.

In order to obtain the actual value of an expression, the optimization
pass calls constant_expression_value().  But it should only do so if it
knows the value can be combined into a constant.  Otherwise, at each
step of walking back up the tree, it will walk down the tree again, only
to discover what it already knew: it isn't constant.

We properly avoided this call for ir_expression nodes, but not for
ir_swizzle nodes.  This patch fixes that, drastically reducing compile
times on certain shaders where tree grafting has given us huge
expression trees.  It also fixes SuperTuxKart.

Thanks to Iago and Mike for help in tracking this down.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78468
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: mesa-stable@lists.freedesktop.org
ilo: move GPE common functions to ilo_builder_render.h

Move 3D/media common functions to the new header.
ilo: move media functions to ilo_builder_media.h

Move functions for the media pipeline to the new header.
ilo: move 3D functions to ilo_builder_3d*.h

Move functions for the 3D pipeline to the new headers.  We artificially split
the functions into top (vertex processing) and bottom (pixel processing), to
keep the headers at reasonable sizes.
ilo: clean up 3D/media common functions

Rename ilo_builder_batch_state_base_address() to gen6_state_base_address() for
consistency and remove unused gen6_STATE_BASE_ADDRESS().  Reorder the code in
gen6_PIPE_CONTROL() a bit.  Finally, some mostly cosmetic changes.
ilo: clean up 3DPRIMITIVE functions

Add ILO_PRIM_RECTANGLES to replace the rectlist bool.
tgsi/ureg: add ureg_UARL shortcut
mesa/gallium: API settings / rasterization rules

Signed-off-by: David Heidelberger <david.heidelberger@ixit.cz>
radeon/softpipe/llvmpipe/svga/i915/ilo/freedreno/nv30: use API settings / rasterization rules

v2: compilation fixes by David Heidelberger <david.heidelberger@ixit.cz>
v3: compilation fix by Thermionix <bond711@gmail.com>

Signed-off-by: David Heidelberger <david.heidelberger@ixit.cz>
nvc0: improve code readability

Signed-off-by: David Heidelberger <david.heidelberger@ixit.cz>
nv50/nvc0: use API settings / rasterization rules

Signed-off-by: David Heidelberger <david.heidelberger@ixit.cz>
nvc0: fix incorrect flipping

This change fixes few OpenGL apps.

Signed-off-by: Tiziano Bacocco <tizbac2@gmail.com>
nv50,nvc0: handle TGSI_PROPERTY_VS_WINDOW_SPACE_POSITION
nv50,nvc0: handle NULL vertex elements without fallback
nv50/ir/tgsi: implement TGSI_OPCODE_NRM,DP2A

Used by d3d9 st.
hack/nv50: don't emit buffer for skipped vertex elements

Grr, should forbid that and insert dummy elements in nine.