main: use new driver flag for conservative rasterization state

Suggested by Marek.

v2: Use new driver flag (Marek)

v3: Fix i965 comments (Lionel)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

src/mesa/drivers/dri/i965/brw_context.h

@@ -226,6 +226,7 @@ enum brw_state_id {
    BRW_STATE_CC_STATE,
    BRW_STATE_BLORP,
    BRW_STATE_VIEWPORT_COUNT,
+   BRW_STATE_CONSERVATIVE_RASTERIZATION,
    BRW_NUM_STATE_BITS
 };
 
@@ -316,6 +317,7 @@ enum brw_state_id {
 #define BRW_NEW_URB_SIZE                (1ull << BRW_STATE_URB_SIZE)
 #define BRW_NEW_CC_STATE                (1ull << BRW_STATE_CC_STATE)
 #define BRW_NEW_BLORP                   (1ull << BRW_STATE_BLORP)
+#define BRW_NEW_CONSERVATIVE_RASTERIZATION (1ull << BRW_STATE_CONSERVATIVE_RASTERIZATION)
 
 struct brw_state_flags {
    /** State update flags signalled by mesa internals */

src/mesa/drivers/dri/i965/brw_state_upload.c

@@ -529,6 +529,7 @@ void brw_init_state( struct brw_context *brw )
    ctx->DriverFlags.NewAtomicBuffer = BRW_NEW_ATOMIC_BUFFER;
    ctx->DriverFlags.NewImageUnits = BRW_NEW_IMAGE_UNITS;
    ctx->DriverFlags.NewDefaultTessLevels = BRW_NEW_DEFAULT_TESS_LEVELS;
+   ctx->DriverFlags.NewIntelConservativeRasterization = BRW_NEW_CONSERVATIVE_RASTERIZATION;
 }
 
 
@@ -663,6 +664,7 @@ static struct dirty_bit_map brw_bits[] = {
    DEFINE_BIT(BRW_NEW_CC_STATE),
    DEFINE_BIT(BRW_NEW_BLORP),
    DEFINE_BIT(BRW_NEW_VIEWPORT_COUNT),
+   DEFINE_BIT(BRW_NEW_CONSERVATIVE_RASTERIZATION),
    {0, 0, 0}
 };
 

src/mesa/drivers/dri/i965/gen8_ps_state.c

@@ -53,7 +53,7 @@ gen8_upload_ps_extra(struct brw_context *brw,
    if (prog_data->persample_dispatch)
       dw1 |= GEN8_PSX_SHADER_IS_PER_SAMPLE;
 
-   /* _NEW_POLYGON */
+   /* _NEW_MULTISAMPLE | BRW_NEW_CONSERVATIVE_RASTERIZATION */
    if (prog_data->uses_sample_mask) {
       if (brw->gen >= 9) {
          if (prog_data->post_depth_coverage)
@@ -131,7 +131,8 @@ const struct brw_tracked_state gen8_ps_extra = {
       .brw   = BRW_NEW_BLORP |
                BRW_NEW_CONTEXT |
                BRW_NEW_FRAGMENT_PROGRAM |
-               BRW_NEW_FS_PROG_DATA,
+               BRW_NEW_FS_PROG_DATA |
+               BRW_NEW_CONSERVATIVE_RASTERIZATION,
    },
    .emit = upload_ps_extra,
 };
@@ -291,8 +292,7 @@ upload_ps_state(struct brw_context *brw)
 
 const struct brw_tracked_state gen8_ps_state = {
    .dirty = {
-      .mesa  = _NEW_MULTISAMPLE |
-               _NEW_POLYGON,
+      .mesa  = _NEW_MULTISAMPLE,
       .brw   = BRW_NEW_BATCH |
                BRW_NEW_BLORP |
                BRW_NEW_FS_PROG_DATA,

src/mesa/drivers/dri/i965/gen8_sf_state.c

@@ -319,7 +319,7 @@ upload_raster(struct brw_context *brw)
       }
    }
 
-   /* _NEW_POLYGON */
+   /* BRW_NEW_CONSERVATIVE_RASTERIZATION */
    if (ctx->IntelConservativeRasterization) {
       if (brw->gen >= 9)
          dw1 |= GEN9_RASTER_CONSERVATIVE_RASTERIZATION_ENABLE;
@@ -344,7 +344,8 @@ const struct brw_tracked_state gen8_raster_state = {
                _NEW_SCISSOR |
                _NEW_TRANSFORM,
       .brw   = BRW_NEW_BLORP |
-               BRW_NEW_CONTEXT,
+               BRW_NEW_CONTEXT |
+               BRW_NEW_CONSERVATIVE_RASTERIZATION,
    },
    .emit = upload_raster,
 };

src/mesa/main/enable.c

@@ -444,7 +444,9 @@ _mesa_set_enable(struct gl_context *ctx, GLenum cap, GLboolean state)
             goto invalid_enum_error;
          if (ctx->IntelConservativeRasterization == state)
             return;
-         FLUSH_VERTICES(ctx, _NEW_POLYGON);
+         FLUSH_VERTICES(ctx, 0);
+         ctx->NewDriverState |=
+            ctx->DriverFlags.NewIntelConservativeRasterization;
          ctx->IntelConservativeRasterization = state;
          break;
       case GL_COLOR_LOGIC_OP:

src/mesa/main/mtypes.h

@@ -4222,6 +4222,11 @@ struct gl_driver_flags
     * gl_context::TessCtrlProgram::patch_default_*
     */
    uint64_t NewDefaultTessLevels;
+
+   /**
+    * gl_context::IntelConservativeRasterization
+    */
+   uint64_t NewIntelConservativeRasterization;
 };
 
 struct gl_uniform_buffer_binding