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author | Brian Paul <brianp@vmware.com> | 2010-01-14 19:15:00 -0700 |
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committer | Brian Paul <brianp@vmware.com> | 2010-01-14 19:15:00 -0700 |
commit | 4461442849bfdb817334b38567136f7f9dabdf59 (patch) | |
tree | 2539c1448256f7c617e6b902deba793ca63a4959 /src/gallium/drivers/llvmpipe/lp_jit.h | |
parent | ca12e30d97b83fb33e1f8f83da05b5ed2809b0af (diff) | |
download | external_mesa3d-4461442849bfdb817334b38567136f7f9dabdf59.zip external_mesa3d-4461442849bfdb817334b38567136f7f9dabdf59.tar.gz external_mesa3d-4461442849bfdb817334b38567136f7f9dabdf59.tar.bz2 |
llvmpipe: implement scissor testing
The scissor test is implemented as another per-quad operation in
the JIT code. The four scissor box params are passed via the
lp_jit_context. In the JIT code we compare the quad's x/y coords
against the clip bounds and create a new in/out mask that's AND'd
with the main quad mask.
Note: we should also do scissor testing in the triangle setup code
to improve efficiency. That's not done yet.
Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_jit.h')
-rw-r--r-- | src/gallium/drivers/llvmpipe/lp_jit.h | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_jit.h b/src/gallium/drivers/llvmpipe/lp_jit.h index 3b31691..9cbe1bd 100644 --- a/src/gallium/drivers/llvmpipe/lp_jit.h +++ b/src/gallium/drivers/llvmpipe/lp_jit.h @@ -79,6 +79,9 @@ struct lp_jit_context float alpha_ref_value; + /** floats, not ints */ + float scissor_xmin, scissor_ymin, scissor_xmax, scissor_ymax; + /* FIXME: store (also?) in floats */ uint8_t *blend_color; @@ -92,10 +95,22 @@ struct lp_jit_context #define lp_jit_context_alpha_ref_value(_builder, _ptr) \ lp_build_struct_get(_builder, _ptr, 1, "alpha_ref_value") +#define lp_jit_context_scissor_xmin_value(_builder, _ptr) \ + lp_build_struct_get(_builder, _ptr, 2, "scissor_xmin") + +#define lp_jit_context_scissor_ymin_value(_builder, _ptr) \ + lp_build_struct_get(_builder, _ptr, 3, "scissor_ymin") + +#define lp_jit_context_scissor_xmax_value(_builder, _ptr) \ + lp_build_struct_get(_builder, _ptr, 4, "scissor_xmax") + +#define lp_jit_context_scissor_ymax_value(_builder, _ptr) \ + lp_build_struct_get(_builder, _ptr, 5, "scissor_ymax") + #define lp_jit_context_blend_color(_builder, _ptr) \ - lp_build_struct_get(_builder, _ptr, 2, "blend_color") + lp_build_struct_get(_builder, _ptr, 6, "blend_color") -#define LP_JIT_CONTEXT_TEXTURES_INDEX 3 +#define LP_JIT_CONTEXT_TEXTURES_INDEX 7 #define lp_jit_context_textures(_builder, _ptr) \ lp_build_struct_get_ptr(_builder, _ptr, LP_JIT_CONTEXT_TEXTURES_INDEX, "textures") |