There are cases where we might want to internally query the location
of a uniform in a shader that failed linking.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Tested-by: Tom Stellard <thomas.stellard@amd.com>
Some C code will want access to the glsl_base_type and
glsl_sampler_dim enums in the near future.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Tested-by: Tom Stellard <thomas.stellard@amd.com>
The spec says "Only ClearBufferiv should be used to clear
stencil buffers." and "Only ClearBufferfv should be used to clear
depth buffers." However, on the following page it also says:
"The result of ClearBuffer is undefined if no conversion between
the type of the specified value and the type of the buffer being
cleared is defined (for example, if ClearBufferiv is called for a
fixed- or floating-point buffer, or if ClearBufferfv is called
for a signed or unsigned integer buffer). *This is not an error.*"
Emphasis mine.
Fixes problems with piglit's clearbuffer-invalid-drawbuffer test.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
This fixes a regression from the recent glReadPixels changes found
with the piglit hiz tests.
Use either MESA_FORMAT_RGBA8888 or MESA_FORMAT_RGBA8888_REV for color
buffers depending on endian-ness. Before, the gl_renderbuffer::Format
field was MESA_FORMAT_RGBA8888 but the data was really stored as
MESA_FORMAT_RGBA8888_REV when using a little endian machine.
Getting this right matters now that we can access renderbuffer data
without going through the span functions (namely glReadPixels() +
MapRenderbuffer()).
These vars will just get overwritten when we call _mesa_add_renderbuffer()
anyway. We only need to set the InternalFormat field when we create the
software renderbuffer.
Reviewed-by: Eric Anholt <eric@anholt.net>
This fixes the glReadPixels() regression for reading from the front/back
color buffers.
Note, we only allow one mapping of an XImage/Pixmap renderbuffer
at any time. That might need to be revisited in the future.
One of the points of GL_ARB_texture_storage is to make it impossible
to have malformed mipmap stacks. If we know the texture object is
immutable, we can skip a bunch of size checking.
Commit a73c65c534 had a typo which
accidentally enabled the workaround-free Gen7 code on Gen6.
Fixes GPU hangs in anything using pow() or integer division/modulus.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
According to the documentation, Ivybridge's math instruction works in
SIMD16 mode for the fragment shader, and no longer forbids align16 mode
for the vertex shader.
The documentation claims that SIMD16 mode isn't supported for INT DIV,
but empirical evidence shows that it works fine. Presumably the note
is trying to warn us that the variant that returns both quotient and
remainder in (dst, dst + 1) doesn't work in SIMD16 mode since dst + 1
would be sechalf(dst), trashing half your results. Since we don't use
that variant, we don't care and can just enable SIMD16 everywhere.
The documentation also still claims that source modifiers and
conditional modifiers aren't supported, but empirical evidence and
study of the simulator both show that they work just fine.
Goodbye workarounds. Math just works now.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
It seems line loop stipple in hardware needs something I don't know, it might
need a proper geometry shader who knows.
Signed-off-by: Dave Airlie <airlied@redhat.com>
SPI semantic indices for PS/VS are now static, so we don't
need to update spi config for every shaders combination. We can move
the functionality of r600_spi_update to r600(evergreen)_pipe_shader_ps.
Flatshade state is now controlled by the global FLAT_SHADE_ENA flag
instead of updating FLAT_SHADE for all inputs.
Sprite coord still requires the update of spi setup when
sprite_coord_enable is first changed from zero (enabled), and then
only when it's changed to other non-zero value (enabled for other input).
Change to zero (disabling) and back to the same value is handled via
global SPRITE_COORD_ENA.
New field "sprite_coord_enable" added to "struct r600_pipe_shader"
to track current state for the pixel shader. It's checked in the
r600_update_derived_state.
Signed-off-by: Vadim Girlin <vadimgirlin@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
There is no need to duplicate semantic mapping which is done in hw, so get
rid of r600_find_vs_semantic_index.
TGSI name/sid pair is mapped to the 8-bit semantic index for SPI.
Signed-off-by: Vadim Girlin <vadimgirlin@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
gbm_gallium does not depend on DRI, but its build rules depend on DRI_LIB_DEPS
being set. Output an error when the user enables gbm_gallium but disables
DRI. This is just a workaround.
If the VS has outputs that aren't consumed by the FS we were mapping
them all to one unused VS output index, but that's illegal. Instead,
map unused VS outputs to unique indexes.
Reviewed-by: José Fonseca <jfonseca@vmware.com>
The code expects the geometry shader to be NULL.
We don't have geometry shaders now, but it's good to be prepared.
v2: check for support in the cso context
