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TODO:
- use proper interface for checking if bo is idle when it's available
- disable ZTOP only when needed
- make it work under KMS
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Hopefully this gets the ordering correct so the space checks don't fail.
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Based on Maciej's code, just fixed up the alignments for INDX_BUFFER
ut2004 runs AS-Convoy
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Conflicts:
src/mesa/drivers/dri/r300/r300_draw.c
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Revert to previous behaviour of dropping to big render operations.
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Copy elements directly to DMA bo to get rid of one memcpy, and prepare for using VBOs for index buffer.
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This saves mapping the index buffer to get a bounds on the indices that
drivers just drop on the floor in the VBO case (cache win), saves a bonus
walk of the indices in the CheckArrayBounds case, and other miscellaneous
validation. On intel it's a particularly a large win (50-100% in my app)
because even though we let the indices stay in both CPU and GPU caches, we
still end up waiting for the GPU to be done with the buffer before reading
from it.
Drivers that want the min/max_index fields must now check index_bounds_valid
and use vbo_get_minmax_index before using them.
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This is just the first step of refactoring. The separation is not yet
clean enough with this commit.
Signed-off-by: Nicolai Hähnle <nhaehnle@gmail.com>
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Signed-off-by: Nicolai Hähnle <nhaehnle@gmail.com>
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Reported-by: Nicolai Hähnle <nhaehnle@gmail.com>
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Stride == 0 means that we value for first vertex should be copied to every other vertices (e.g. constant color).
This fixes glean/vertProg1 and sauerbraten with enabled shaders.
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The problem is if we find out later we don't have any cmdbuf space but
we've already written the arrays to the DMA buffer object, we end up
emitting the current cmdbuf which has references to the current DMA object
we then send that to the hw and we can't reference the arrays we just emitted
to the old DMA buffer. things go bad, crash boom.
This can probably be tuned further + swtcl probably needs some fixes
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- don't limit vertex count if we are using indices
- max indices count is 65535 not 65536
- remove some comments that don't apply anymore
- remove unreachable code
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This lets ut2004 avoid hitting the elt warning.
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Signed-off-by: Maciej Cencora <m.cencora@gmail.com>
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Also when index format is GL_UBYTE, convert it to GL_USHORT not GL_UINT.
Fix license header too.
Reported by: Nicolai Hähnle <nhaehnle@gmail.com>
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