diff options
Diffstat (limited to 'src/mesa/shader')
| -rw-r--r-- | src/mesa/shader/prog_statevars.c | 64 | ||||
| -rw-r--r-- | src/mesa/shader/prog_statevars.h | 2 |
2 files changed, 66 insertions, 0 deletions
diff --git a/src/mesa/shader/prog_statevars.c b/src/mesa/shader/prog_statevars.c index 058d4bbafb7..460ecd44a84 100644 --- a/src/mesa/shader/prog_statevars.c +++ b/src/mesa/shader/prog_statevars.c @@ -444,6 +444,61 @@ _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 */ @@ -639,6 +694,9 @@ _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: @@ -830,6 +888,12 @@ 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 */ |