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The first time a context is bound to a drawable, the viewport and scissor
bounds are initialized to the buffer's size. This is actually a bit tricky.
A new _mesa_check_init_viewport() function is called in several places
to check if the viewport has been initialized. We also use a new
ctx->ViewportInitialized flag instead of the overloaded
ctx->FirstTimeCurrent flag.
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Prevents segmentation fault when trying to set the viewport/scissor
after a context/drawable visual mismatch.
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Add a new flag mvp_with_dp4 in the context, and use that to switch
both ffvertex.c and programopt.c vertex transformation code to
either DP4 or MUL/MAD implementations.
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Signed-off-by: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
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This function is called from many OS-dependent versions of MakeCurrent.
Move the check for multithreading to this central location to avoid
having to make this check from all the callers.
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A bit of refactoring with an eye toward ES2 and GL 3.1
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The core reference counting code is centralized in p_refcnt.h.
This has some consequences related to struct pipe_buffer:
* The screen member of struct pipe_buffer must be initialized, or
pipe_buffer_reference() will crash trying to destroy a buffer with reference
count 0. u_simple_screen takes care of this, but I may have missed some of
the drivers not using it.
* Except for rare exceptions deep in winsys code, buffers must always be
allocated via pipe_buffer_create() or via screen->*buffer_create() rather
than via winsys->*buffer_create().
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Use _mesa_malloc(), _mesa_free(), etc everywhere, not malloc(), free(), etc.
Still using CALLOC_STRUCT() at this point.
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Call it before freeing core Mesa state to avoid references to freed buffer objects.
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We want to use the pipe_buffer_* inlines everywhere, but a pipe context
is not always available nor is it needed.
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Examine the currently bound color buffer's format to see if there's a good
format/type match.
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needed
The default texture is used when the current fragment shader has texture
sample instructions but the user has not provided/bound a texture.
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the aux draw module
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Use _mesa_reference_vert/fragprog() wherever we assign program pointers.
Fixes a memory corruption bug found with glean/api2 test.
Another memory bug involving shaders yet to be fixed...
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This allows us to remove most of the direct references to winsys in the state tracker.
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Also, rearrange the st_destroy_context() code a bit to prevent some
invalid/NULL ptr derefs during tear-down.
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Move init of these items to new st_init_clear().
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The bitmap cache attempts to accumulate a series of glBitmap calls in a
buffer to effectively render a whole bunch of bitmaps at once.
The cache can be disabled, if needed, by setting UseBitmapCache=GL_FALSE.
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lines, points, etc.
Disable paths that would convert points/lines to tris as that upsets selection,
feedback, rastpos.
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Also, glBitmap now re-uses the vertex buffer to avoid frequent allocations/
deallocations. And, use u_simple_shaders utility code.
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This avoids the Mesa->TGSI translation step.
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Use the code in cso_context.c rather than st_cache.c.
Basically, binding of state objects now goes through the CSO module.
But Vertex/fragment shaders go through pipe->bind_fs/vs_state() since they're
not cached by the CSO module at this time.
Also, update softpipe driver to handle NULL state objects in various places.
This happens during context destruction. May need to update other drivers...
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Update the Makefiles and includes for the new paths.
Note that there hasn't been no separation of the Makefiles yet, and make is
jumping all over the place. That will be taken care shortly. But for now, make
should work. It was tested with linux and linux-dri. Linux-cell and linux-llvm
might require some minor tweaks.
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Use hardware rendering to compute/render mipmap levels.
The fallback path (which will be used for non-renderable texture formats)
isn't working yet.
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Provide an actual definition of the pipe_buffer struct, containing
the parameters used to create the buffer, and its refcount.
Shift refcounting buffers out of the winsys interface, similar to
surfaces & textures.
Rework pipebuffer/ to reflect the fact these changes, and also Michel's
reworking of the buffer interface.
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If an app never called glViewport, the viewport size was always 0 by 0 pixels.
Now pass initial size to st_create_framebuffer() and initialize the viewport
and scissor bounds in st_make_current().
This could also be fixed by ensuring the gl_framebuffers passed to
_mesa_make_current() were initialized to the right size. But that involves
allocating the renderbuffers/pipe_surfaces earlier and that runs into some
other issues ATM.
Also remove obsolete createRenderbuffers param to st_create_framebuffer().
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