Age | Commit message (Collapse) | Author |
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aka transform feedback
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New draw API function to indicate whether or not to convert points to
quads for sprite rasterization.
Fix point-to-quad conversion regression in the wide-point stage. We
need to check the pipe_rasterizer_state::point_quad_rasterization flag.
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use just one constructor to figure out whether to use llvm.
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Conflicts:
src/gallium/auxiliary/draw/draw_context.c
src/gallium/auxiliary/draw/draw_pipe_aaline.c
src/gallium/drivers/llvmpipe/lp_context.c
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When points or lines are decomposed into triangles, we need to be sure
to disable polygon culling, stippling, "un-filled" modes, etc.
This patch sets the rasterization state to disable those things prior to
drawing points/lines with triangles, then restores the previous state
afterward.
The new piglit point-no-line-cull test checks this problem & solution.
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Now that draw depends on llvm it is very difficult to correctly handle
broken llvm installations. Either the user requests LLVM and it needs to
supply a working installation. Or it doesn't, and it gets no LLVM
accelerate pipe drivers.
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code generate big chunks of the vertex pipeline in order to speed up
software vertex processing.
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Conflicts:
src/gallium/auxiliary/tgsi/tgsi_dump.c
src/gallium/include/pipe/p_shader_tokens.h
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Modify the translate module to respect instance divisors and accept
instance id as a parameter to calculate input vertex offset.
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The idea here is to eliminate the set_edgeflags() call in pipe_context
by treating edgeflags as a regular vertex element.
Edgeflags provoke special treatment in hardware, which means we need to
label them in some way, in this case we'll be passing them through the
vertex shader and labelling the vertex shader output with a new TGSI
semantic (TGSI_SEMANTIC_EDGEFLAG).
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The Minimum Resolvable Depth factor depends on the driver and can't just
be computed from the number of Z buffer bits.
Glean's polygon offset test now passes with softpipe.
Still need to determine the MRD factor for other gallium drivers, if they use
the draw module's polygon offset stage...
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vertex shaders
This may only be practical for the softpipe driver at this time.
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Also, provide a separate flag to say whether the driver can handle
clipping/rhw tasks, in addition to the API flag which indicates they
have already been done.
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Also, implement support in the draw module. We were hardwiring these
to one for quite a long time...
Currently using a draw_set_edgeflags() function, may be better to push
the argument into the draw_arrays() function. TBD.
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quads)
New draw_enable_point_sprites() function.
Fixes spriteblast.c demo
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Allows drivers that implement line stipple to turn off this drawing stage.
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This fixes a validation/code-path problem. Enabling the stage for the sake
of wide points also inadvertantly caused wide lines to be converted to tris
when we actually want them passed through, such as for the AA line stage.
This is just cleaner now.
Also, replace draw_convert_wide_lines() with draw_wide_line_threshold() as
was done for points. Allows for 1-pixel lines to be converted too if needed.
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vertex attribs
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For hardware without native polygon stipple. Create a 32x32 alpha texture
that encodes the stipple pattern. Modify the user's fragment program to
sample the texture (with gl_FragCoord) and kill the fragment according to
the texel value.
Temporarily enabled in softpipe driver, replacing the sp_quad_stipple.c step.
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AA points are drawn by converting the point to a quad, then modifying the
user's fragment shader to compute a coverage value. The final fragment
color's alpha is modulated by the coverage value. Fragments outside the
point's radius are killed.
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New draw/prim stage: draw_aaline. When installed, lines are replaced by
textured quads to do antialiasing. The current user-defined fragment shader
is modified to do a texture fetch and modulate fragment alpha.
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"aux" is a reserved name on Windows (X_X)
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