summaryrefslogtreecommitdiffstats
path: root/src/mesa/shader
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/shader')
-rw-r--r--src/mesa/shader/prog_statevars.c64
-rw-r--r--src/mesa/shader/prog_statevars.h2
2 files changed, 66 insertions, 0 deletions
diff --git a/src/mesa/shader/prog_statevars.c b/src/mesa/shader/prog_statevars.c
index 20321dd01f6..a0be1acfcab 100644
--- a/src/mesa/shader/prog_statevars.c
+++ b/src/mesa/shader/prog_statevars.c
@@ -445,6 +445,61 @@ _mesa_fetch_state(GLcontext *ctx, const gl_state_index state[],
value[3] = (GLfloat)(ctx->Fog.Density * ONE_DIV_SQRT_LN2);
return;
+ case STATE_POINT_SIZE_CLAMPED:
+ {
+ /* this includes implementation dependent limits, to avoid
+ * another potentially necessary clamp.
+ * Note: for sprites, point smooth (point AA) is ignored
+ * and we'll clamp to MinPointSizeAA and MaxPointSize, because we
+ * expect drivers will want to say their minimum for AA size is 0.0
+ * but for non-AA it's 1.0 (because normal points with size below 1.0
+ * need to get rounded up to 1.0, hence never disappear). GL does
+ * not specify max clamp size for sprites, other than it needs to be
+ * at least as large as max AA size, hence use non-AA size there.
+ */
+ GLfloat minImplSize;
+ GLfloat maxImplSize;
+ if (ctx->Point.PointSprite) {
+ minImplSize = ctx->Const.MinPointSizeAA;
+ maxImplSize = ctx->Const.MaxPointSize;
+ }
+ else if (ctx->Point.SmoothFlag || ctx->Multisample._Enabled) {
+ minImplSize = ctx->Const.MinPointSizeAA;
+ maxImplSize = ctx->Const.MaxPointSizeAA;
+ }
+ else {
+ minImplSize = ctx->Const.MinPointSize;
+ maxImplSize = ctx->Const.MaxPointSize;
+ }
+ value[0] = ctx->Point.Size;
+ value[1] = ctx->Point.MinSize >= minImplSize ? ctx->Point.MinSize : minImplSize;
+ value[2] = ctx->Point.MaxSize <= maxImplSize ? ctx->Point.MaxSize : maxImplSize;
+ value[3] = ctx->Point.Threshold;
+ }
+ return;
+ case STATE_POINT_SIZE_IMPL_CLAMP:
+ {
+ /* for implementation clamp only in vs */
+ GLfloat minImplSize;
+ GLfloat maxImplSize;
+ if (ctx->Point.PointSprite) {
+ minImplSize = ctx->Const.MinPointSizeAA;
+ maxImplSize = ctx->Const.MaxPointSize;
+ }
+ else if (ctx->Point.SmoothFlag || ctx->Multisample._Enabled) {
+ minImplSize = ctx->Const.MinPointSizeAA;
+ maxImplSize = ctx->Const.MaxPointSizeAA;
+ }
+ else {
+ minImplSize = ctx->Const.MinPointSize;
+ maxImplSize = ctx->Const.MaxPointSize;
+ }
+ value[0] = ctx->Point.Size;
+ value[1] = minImplSize;
+ value[2] = maxImplSize;
+ value[3] = ctx->Point.Threshold;
+ }
+ return;
case STATE_LIGHT_SPOT_DIR_NORMALIZED:
{
/* here, state[2] is the light number */
@@ -640,6 +695,9 @@ _mesa_program_state_flags(const gl_state_index state[STATE_LENGTH])
return _NEW_TEXTURE;
case STATE_FOG_PARAMS_OPTIMIZED:
return _NEW_FOG;
+ case STATE_POINT_SIZE_CLAMPED:
+ case STATE_POINT_SIZE_IMPL_CLAMP:
+ return _NEW_POINT | _NEW_MULTISAMPLE;
case STATE_LIGHT_SPOT_DIR_NORMALIZED:
case STATE_LIGHT_POSITION:
case STATE_LIGHT_POSITION_NORMALIZED:
@@ -831,6 +889,12 @@ append_token(char *dst, gl_state_index k)
case STATE_FOG_PARAMS_OPTIMIZED:
append(dst, "fogParamsOptimized");
break;
+ case STATE_POINT_SIZE_CLAMPED:
+ append(dst, "pointSizeClamped");
+ break;
+ case STATE_POINT_SIZE_IMPL_CLAMP:
+ append(dst, "pointSizeImplClamp");
+ break;
case STATE_LIGHT_SPOT_DIR_NORMALIZED:
append(dst, "lightSpotDirNormalized");
break;
diff --git a/src/mesa/shader/prog_statevars.h b/src/mesa/shader/prog_statevars.h
index 1180d9eaa4a..1753471ffb6 100644
--- a/src/mesa/shader/prog_statevars.h
+++ b/src/mesa/shader/prog_statevars.h
@@ -108,6 +108,8 @@ typedef enum gl_state_index_ {
STATE_NORMAL_SCALE,
STATE_TEXRECT_SCALE,
STATE_FOG_PARAMS_OPTIMIZED, /* for faster fog calc */
+ STATE_POINT_SIZE_CLAMPED, /* includes implementation dependent size clamp */
+ STATE_POINT_SIZE_IMPL_CLAMP, /* for implementation clamp only in vs */
STATE_LIGHT_SPOT_DIR_NORMALIZED, /* pre-normalized spot dir */
STATE_LIGHT_POSITION, /* object vs eye space */
STATE_LIGHT_POSITION_NORMALIZED, /* object vs eye space */