[Mesa-dev] [PATCH 2/4] i965: Use ctx->Const.MaxLineWidth when clamping ctx->Line.Width.

[Kenneth Graunke]

Rather than hardcoding platform values in every code path, just use the
maximum value we set.

Currently, ctx->Const.LineWidth == 5, which is smaller than the hardware
limit.  But applications shouldn't be using a value larger than we
support anyway.

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
---
 src/mesa/drivers/dri/i965/brw_sf_state.c  | 4 ++--
 src/mesa/drivers/dri/i965/gen6_sf_state.c | 3 ++-
 src/mesa/drivers/dri/i965/gen7_sf_state.c | 3 ++-
 src/mesa/drivers/dri/i965/gen8_sf_state.c | 3 ++-
 4 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_sf_state.c b/src/mesa/drivers/dri/i965/brw_sf_state.c
index 7f31bc1..2fecd1e 100644
--- a/src/mesa/drivers/dri/i965/brw_sf_state.c
+++ b/src/mesa/drivers/dri/i965/brw_sf_state.c
@@ -213,8 +213,8 @@ static void upload_sf_unit( struct brw_context *brw )
    }
 
    /* _NEW_LINE */
-   /* XXX use ctx->Const.Min/MaxLineWidth here */
-   sf->sf6.line_width = CLAMP(ctx->Line.Width, 1.0, 5.0) * (1<<1);
+   sf->sf6.line_width =
+      CLAMP(ctx->Line.Width, 1.0, ctx->Const.MaxLineWidth) * (1<<1);
 
    sf->sf6.line_endcap_aa_region_width = 1;
    if (ctx->Line.SmoothFlag)
diff --git a/src/mesa/drivers/dri/i965/gen6_sf_state.c b/src/mesa/drivers/dri/i965/gen6_sf_state.c
index d0411b0..24d2754 100644
--- a/src/mesa/drivers/dri/i965/gen6_sf_state.c
+++ b/src/mesa/drivers/dri/i965/gen6_sf_state.c
@@ -322,7 +322,8 @@ upload_sf_state(struct brw_context *brw)
 
    /* _NEW_LINE */
    {
-      uint32_t line_width_u3_7 = U_FIXED(CLAMP(ctx->Line.Width, 0.0, 7.99), 7);
+      uint32_t line_width_u3_7 =
+         U_FIXED(CLAMP(ctx->Line.Width, 0.0, ctx->Const.MaxLineWidth), 7);
       /* TODO: line width of 0 is not allowed when MSAA enabled */
       if (line_width_u3_7 == 0)
          line_width_u3_7 = 1;
diff --git a/src/mesa/drivers/dri/i965/gen7_sf_state.c b/src/mesa/drivers/dri/i965/gen7_sf_state.c
index 150a4d3..109b825 100644
--- a/src/mesa/drivers/dri/i965/gen7_sf_state.c
+++ b/src/mesa/drivers/dri/i965/gen7_sf_state.c
@@ -190,7 +190,8 @@ upload_sf_state(struct brw_context *brw)
 
    /* _NEW_LINE */
    {
-      uint32_t line_width_u3_7 = U_FIXED(CLAMP(ctx->Line.Width, 0.0, 7.99), 7);
+      uint32_t line_width_u3_7 =
+         U_FIXED(CLAMP(ctx->Line.Width, 0.0, ctx->Const.MaxLineWidth), 7);
       /* TODO: line width of 0 is not allowed when MSAA enabled */
       if (line_width_u3_7 == 0)
          line_width_u3_7 = 1;
diff --git a/src/mesa/drivers/dri/i965/gen8_sf_state.c b/src/mesa/drivers/dri/i965/gen8_sf_state.c
index 6aa7b4d..6995a6a 100644
--- a/src/mesa/drivers/dri/i965/gen8_sf_state.c
+++ b/src/mesa/drivers/dri/i965/gen8_sf_state.c
@@ -149,7 +149,8 @@ upload_sf(struct brw_context *brw)
        dw1 |= GEN6_SF_VIEWPORT_TRANSFORM_ENABLE;
 
    /* _NEW_LINE */
-   uint32_t line_width_u3_7 = U_FIXED(CLAMP(ctx->Line.Width, 0.0, 7.99), 7);
+   uint32_t line_width_u3_7 =
+      U_FIXED(CLAMP(ctx->Line.Width, 0.0, ctx->Const.MaxLineWidth), 7);
    if (line_width_u3_7 == 0)
       line_width_u3_7 = 1;
    if (brw->gen >= 9 || brw->is_cherryview) {
-- 
2.1.2