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-rw-r--r--src/mesa/drivers/dri/r200/r200_context.h6
-rw-r--r--src/mesa/drivers/dri/r200/r200_state.c39
-rw-r--r--src/mesa/drivers/dri/r200/r200_state_init.c1
-rw-r--r--src/mesa/drivers/dri/radeon/radeon_context.h6
-rw-r--r--src/mesa/drivers/dri/radeon/radeon_state.c37
-rw-r--r--src/mesa/drivers/dri/radeon/radeon_state_init.c1
6 files changed, 73 insertions, 17 deletions
diff --git a/src/mesa/drivers/dri/r200/r200_context.h b/src/mesa/drivers/dri/r200/r200_context.h
index 5de1cb6eed..65ca9ef762 100644
--- a/src/mesa/drivers/dri/r200/r200_context.h
+++ b/src/mesa/drivers/dri/r200/r200_context.h
@@ -399,9 +399,9 @@ struct r200_state_atom {
#define LIT_DIRECTION_Y 18
#define LIT_DIRECTION_Z 19
#define LIT_DIRECTION_W 20
-#define LIT_ATTEN_CONST 21
+#define LIT_ATTEN_QUADRATIC 21
#define LIT_ATTEN_LINEAR 22
-#define LIT_ATTEN_QUADRATIC 23
+#define LIT_ATTEN_CONST 23
#define LIT_ATTEN_XXX 24
#define LIT_CMD_1 25
#define LIT_SPOT_DCD 26
@@ -410,7 +410,7 @@ struct r200_state_atom {
#define LIT_SPOT_CUTOFF 29
#define LIT_SPECULAR_THRESH 30
#define LIT_RANGE_CUTOFF 31 /* ? */
-#define LIT_RANGE_ATTEN 32 /* ? */
+#define LIT_ATTEN_CONST_INV 32
#define LIT_STATE_SIZE 33
/* Fog
diff --git a/src/mesa/drivers/dri/r200/r200_state.c b/src/mesa/drivers/dri/r200/r200_state.c
index 37da564986..7ea45f3d78 100644
--- a/src/mesa/drivers/dri/r200/r200_state.c
+++ b/src/mesa/drivers/dri/r200/r200_state.c
@@ -1104,6 +1104,10 @@ static void r200Lightfv( GLcontext *ctx, GLenum light,
case GL_CONSTANT_ATTENUATION:
R200_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:
R200_STATECHANGE(rmesa, lit[p]);
@@ -1117,6 +1121,41 @@ static void r200Lightfv( GLcontext *ctx, GLenum light,
return;
}
+ /* Set RANGE_ATTEN only when needed */
+ switch (pname) {
+ case GL_POSITION:
+ case GL_CONSTANT_ATTENUATION:
+ case GL_LINEAR_ATTENUATION:
+ case GL_QUADRATIC_ATTENUATION: {
+ GLuint *icmd = (GLuint *)R200_DB_STATE( tcl );
+ GLuint idx = TCL_PER_LIGHT_CTL_0 + p/2;
+ GLuint atten_flag = ( p&1 ) ? R200_LIGHT_1_ENABLE_RANGE_ATTEN
+ : R200_LIGHT_0_ENABLE_RANGE_ATTEN;
+ GLuint atten_const_flag = ( p&1 ) ? R200_LIGHT_1_CONSTANT_RANGE_ATTEN
+ : R200_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;
+ }
+ }
+
+ R200_DB_STATECHANGE( rmesa, &rmesa->hw.tcl );
+ break;
+ }
+ default:
+ break;
+ }
}
diff --git a/src/mesa/drivers/dri/r200/r200_state_init.c b/src/mesa/drivers/dri/r200/r200_state_init.c
index 22ad4e376e..b9fc724f56 100644
--- a/src/mesa/drivers/dri/r200/r200_state_init.c
+++ b/src/mesa/drivers/dri/r200/r200_state_init.c
@@ -683,6 +683,7 @@ void r200InitState( r200ContextPtr rmesa )
&l->LinearAttenuation );
ctx->Driver.Lightfv( ctx, p, GL_QUADRATIC_ATTENUATION,
&l->QuadraticAttenuation );
+ *(float *)&(rmesa->hw.lit[i].cmd[LIT_ATTEN_XXX]) = 0.0;
}
ctx->Driver.LightModelfv( ctx, GL_LIGHT_MODEL_AMBIENT,
diff --git a/src/mesa/drivers/dri/radeon/radeon_context.h b/src/mesa/drivers/dri/radeon/radeon_context.h
index 0a32fd8aa3..3ce67044f9 100644
--- a/src/mesa/drivers/dri/radeon/radeon_context.h
+++ b/src/mesa/drivers/dri/radeon/radeon_context.h
@@ -340,9 +340,9 @@ struct radeon_state_atom {
#define LIT_DIRECTION_Y 18
#define LIT_DIRECTION_Z 19
#define LIT_DIRECTION_W 20
-#define LIT_ATTEN_CONST 21
+#define LIT_ATTEN_QUADRATIC 21
#define LIT_ATTEN_LINEAR 22
-#define LIT_ATTEN_QUADRATIC 23
+#define LIT_ATTEN_CONST 23
#define LIT_ATTEN_XXX 24
#define LIT_CMD_1 25
#define LIT_SPOT_DCD 26
@@ -350,7 +350,7 @@ struct radeon_state_atom {
#define LIT_SPOT_CUTOFF 28
#define LIT_SPECULAR_THRESH 29
#define LIT_RANGE_CUTOFF 30 /* ? */
-#define LIT_RANGE_ATTEN 31 /* ? */
+#define LIT_ATTEN_CONST_INV 31
#define LIT_STATE_SIZE 32
/* Fog
diff --git a/src/mesa/drivers/dri/radeon/radeon_state.c b/src/mesa/drivers/dri/radeon/radeon_state.c
index e71f5adf27..db198074ee 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 (p&1)
- flag = RADEON_LIGHT_1_ENABLE_RANGE_ATTEN;
- else
- flag = RADEON_LIGHT_0_ENABLE_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;
+ }
+ }
- 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:
diff --git a/src/mesa/drivers/dri/radeon/radeon_state_init.c b/src/mesa/drivers/dri/radeon/radeon_state_init.c
index 2aa8dbe40a..ceb313a7e7 100644
--- a/src/mesa/drivers/dri/radeon/radeon_state_init.c
+++ b/src/mesa/drivers/dri/radeon/radeon_state_init.c
@@ -522,6 +522,7 @@ void radeonInitState( radeonContextPtr rmesa )
&l->LinearAttenuation );
ctx->Driver.Lightfv( ctx, p, GL_QUADRATIC_ATTENUATION,
&l->QuadraticAttenuation );
+ *(float *)&(rmesa->hw.lit[i].cmd[LIT_ATTEN_XXX]) = 0.0;
}
ctx->Driver.LightModelfv( ctx, GL_LIGHT_MODEL_AMBIENT,
generated by cgit v1.2.3 (git 2.51.0) at 2025-10-31 22:54:06 +0000