diff options
Diffstat (limited to 'src/mesa/drivers/dri/radeon/radeon_state.c')
| -rw-r--r-- | src/mesa/drivers/dri/radeon/radeon_state.c | 39 |
1 files changed, 27 insertions, 12 deletions
diff --git a/src/mesa/drivers/dri/radeon/radeon_state.c b/src/mesa/drivers/dri/radeon/radeon_state.c index e71f5adf271..db198074eee 100644 --- a/src/mesa/drivers/dri/radeon/radeon_state.c +++ b/src/mesa/drivers/dri/radeon/radeon_state.c @@ -1101,6 +1101,10 @@ static void radeonLightfv( GLcontext *ctx, GLenum light, case GL_CONSTANT_ATTENUATION: RADEON_STATECHANGE(rmesa, lit[p]); fcmd[LIT_ATTEN_CONST] = params[0]; + if ( params[0] == 0.0 ) + fcmd[LIT_ATTEN_CONST_INV] = FLT_MAX; + else + fcmd[LIT_ATTEN_CONST_INV] = 1.0 / params[0]; break; case GL_LINEAR_ATTENUATION: RADEON_STATECHANGE(rmesa, lit[p]); @@ -1117,23 +1121,34 @@ static void radeonLightfv( GLcontext *ctx, GLenum light, /* Set RANGE_ATTEN only when needed */ switch (pname) { case GL_POSITION: + case GL_CONSTANT_ATTENUATION: case GL_LINEAR_ATTENUATION: case GL_QUADRATIC_ATTENUATION: { - GLuint flag; + GLuint *icmd = (GLuint *)RADEON_DB_STATE( tcl ); GLuint idx = TCL_PER_LIGHT_CTL_0 + p/2; + GLuint atten_flag = ( p&1 ) ? RADEON_LIGHT_1_ENABLE_RANGE_ATTEN + : RADEON_LIGHT_0_ENABLE_RANGE_ATTEN; + GLuint atten_const_flag = ( p&1 ) ? RADEON_LIGHT_1_CONSTANT_RANGE_ATTEN + : RADEON_LIGHT_0_CONSTANT_RANGE_ATTEN; + + if ( l->EyePosition[3] == 0.0F || + ( ( fcmd[LIT_ATTEN_CONST] == 0.0 || fcmd[LIT_ATTEN_CONST] == 1.0 ) && + fcmd[LIT_ATTEN_QUADRATIC] == 0.0 && fcmd[LIT_ATTEN_LINEAR] == 0.0 ) ) { + /* Disable attenuation */ + icmd[idx] &= ~atten_flag; + } else { + if ( fcmd[LIT_ATTEN_QUADRATIC] == 0.0 && fcmd[LIT_ATTEN_LINEAR] == 0.0 ) { + /* Enable only constant portion of attenuation calculation */ + icmd[idx] |= ( atten_flag | atten_const_flag ); + } else { + /* Enable full attenuation calculation */ + icmd[idx] &= ~atten_const_flag; + icmd[idx] |= atten_flag; + } + } - if (p&1) - flag = RADEON_LIGHT_1_ENABLE_RANGE_ATTEN; - else - flag = RADEON_LIGHT_0_ENABLE_RANGE_ATTEN; - - RADEON_STATECHANGE(rmesa, tcl); - if (l->EyePosition[3] != 0.0F && - (l->LinearAttenuation != 0.0F || l->QuadraticAttenuation != 0.0F)) - rmesa->hw.tcl.cmd[idx] |= flag; - else - rmesa->hw.tcl.cmd[idx] &= ~flag; + RADEON_DB_STATECHANGE( rmesa, &rmesa->hw.tcl ); break; } default: |