st_atom_depth.c File Reference

Include dependency graph for st_atom_depth.c:

Go to the source code of this file.

Functions
GLuint	st_compare_func_to_pipe (GLenum func)
	Convert an OpenGL compare mode to a pipe tokens.
static GLuint	gl_stencil_op_to_pipe (GLenum func)
	Convert GLenum stencil op tokens to pipe tokens.
static void	update_depth_stencil_alpha (struct st_context *st)
Variables
struct st_tracked_state	st_update_depth_stencil_alpha

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Function Documentation

static GLuint gl_stencil_op_to_pipe

(

GLenum

func

)

[static]

Convert GLenum stencil op tokens to pipe tokens.

Definition at line 68 of file st_atom_depth.c.

References assert, PIPE_STENCIL_OP_DECR, PIPE_STENCIL_OP_DECR_WRAP, PIPE_STENCIL_OP_INCR, PIPE_STENCIL_OP_INCR_WRAP, PIPE_STENCIL_OP_INVERT, PIPE_STENCIL_OP_KEEP, PIPE_STENCIL_OP_REPLACE, and PIPE_STENCIL_OP_ZERO.

{
   switch (func) {
   case GL_KEEP:
      return PIPE_STENCIL_OP_KEEP;
   case GL_ZERO:
      return PIPE_STENCIL_OP_ZERO;
   case GL_REPLACE:
      return PIPE_STENCIL_OP_REPLACE;
   case GL_INCR:
      return PIPE_STENCIL_OP_INCR;
   case GL_DECR:
      return PIPE_STENCIL_OP_DECR;
   case GL_INCR_WRAP:
      return PIPE_STENCIL_OP_INCR_WRAP;
   case GL_DECR_WRAP:
      return PIPE_STENCIL_OP_DECR_WRAP;
   case GL_INVERT:
      return PIPE_STENCIL_OP_INVERT;
   default:
      assert("invalid GL token in gl_stencil_op_to_pipe()" == NULL);
      return 0;
   }
}

GLuint st_compare_func_to_pipe

(

GLenum

func

)

Convert an OpenGL compare mode to a pipe tokens.

Definition at line 47 of file st_atom_depth.c.

References assert, PIPE_FUNC_ALWAYS, PIPE_FUNC_EQUAL, PIPE_FUNC_GEQUAL, PIPE_FUNC_GREATER, PIPE_FUNC_LEQUAL, PIPE_FUNC_LESS, PIPE_FUNC_NEVER, and PIPE_FUNC_NOTEQUAL.

{
   /* Same values, just biased */
   assert(PIPE_FUNC_NEVER == GL_NEVER - GL_NEVER);
   assert(PIPE_FUNC_LESS == GL_LESS - GL_NEVER);
   assert(PIPE_FUNC_EQUAL == GL_EQUAL - GL_NEVER);
   assert(PIPE_FUNC_LEQUAL == GL_LEQUAL - GL_NEVER);
   assert(PIPE_FUNC_GREATER == GL_GREATER - GL_NEVER);
   assert(PIPE_FUNC_NOTEQUAL == GL_NOTEQUAL - GL_NEVER);
   assert(PIPE_FUNC_GEQUAL == GL_GEQUAL - GL_NEVER);
   assert(PIPE_FUNC_ALWAYS == GL_ALWAYS - GL_NEVER);
   assert(func >= GL_NEVER);
   assert(func <= GL_ALWAYS);
   return func - GL_NEVER;
}

static void update_depth_stencil_alpha

(

struct st_context *

st

)

[static]

Definition at line 94 of file st_atom_depth.c.

References pipe_depth_stencil_alpha_state::alpha, st_context::cso_context, cso_set_depth_stencil_alpha(), st_context::ctx, pipe_depth_stencil_alpha_state::depth, st_context::depth_stencil, pipe_alpha_state::enabled, pipe_stencil_state::enabled, pipe_depth_state::enabled, pipe_stencil_state::fail_op, pipe_alpha_state::func, pipe_stencil_state::func, pipe_depth_state::func, gl_stencil_op_to_pipe(), pipe_depth_state::occlusion_count, pipe_alpha_state::ref, pipe_stencil_state::ref_value, st_compare_func_to_pipe(), st_context::state, pipe_depth_stencil_alpha_state::stencil, pipe_stencil_state::value_mask, pipe_stencil_state::write_mask, pipe_depth_state::writemask, pipe_stencil_state::zfail_op, and pipe_stencil_state::zpass_op.

{
   struct pipe_depth_stencil_alpha_state *dsa = &st->state.depth_stencil;

   memset(dsa, 0, sizeof(*dsa));

   dsa->depth.enabled = st->ctx->Depth.Test;
   dsa->depth.writemask = st->ctx->Depth.Mask;
   dsa->depth.func = st_compare_func_to_pipe(st->ctx->Depth.Func);

   if (st->ctx->Query.CurrentOcclusionObject &&
       st->ctx->Query.CurrentOcclusionObject->Active)
      dsa->depth.occlusion_count = 1;

   if (st->ctx->Stencil.Enabled && st->ctx->Visual.stencilBits > 0) {
      dsa->stencil[0].enabled = 1;
      dsa->stencil[0].func = st_compare_func_to_pipe(st->ctx->Stencil.Function[0]);
      dsa->stencil[0].fail_op = gl_stencil_op_to_pipe(st->ctx->Stencil.FailFunc[0]);
      dsa->stencil[0].zfail_op = gl_stencil_op_to_pipe(st->ctx->Stencil.ZFailFunc[0]);
      dsa->stencil[0].zpass_op = gl_stencil_op_to_pipe(st->ctx->Stencil.ZPassFunc[0]);
      dsa->stencil[0].ref_value = st->ctx->Stencil.Ref[0] & 0xff;
      dsa->stencil[0].value_mask = st->ctx->Stencil.ValueMask[0] & 0xff;
      dsa->stencil[0].write_mask = st->ctx->Stencil.WriteMask[0] & 0xff;

      if (st->ctx->Stencil._TestTwoSide) {
         dsa->stencil[1].enabled = 1;
         dsa->stencil[1].func = st_compare_func_to_pipe(st->ctx->Stencil.Function[1]);
         dsa->stencil[1].fail_op = gl_stencil_op_to_pipe(st->ctx->Stencil.FailFunc[1]);
         dsa->stencil[1].zfail_op = gl_stencil_op_to_pipe(st->ctx->Stencil.ZFailFunc[1]);
         dsa->stencil[1].zpass_op = gl_stencil_op_to_pipe(st->ctx->Stencil.ZPassFunc[1]);
         dsa->stencil[1].ref_value = st->ctx->Stencil.Ref[1] & 0xff;
         dsa->stencil[1].value_mask = st->ctx->Stencil.ValueMask[1] & 0xff;
         dsa->stencil[1].write_mask = st->ctx->Stencil.WriteMask[1] & 0xff;
      }
      else {
         dsa->stencil[1] = dsa->stencil[0];
         dsa->stencil[1].enabled = 0;
      }
   }

   if (st->ctx->Color.AlphaEnabled) {
      dsa->alpha.enabled = 1;
      dsa->alpha.func = st_compare_func_to_pipe(st->ctx->Color.AlphaFunc);
      dsa->alpha.ref = st->ctx->Color.AlphaRef;
   }

   cso_set_depth_stencil_alpha(st->cso_context, dsa);
}

---

Variable Documentation

struct st_tracked_state st_update_depth_stencil_alpha

Initial value:

 {
   "st_update_depth_stencil",                           
   {                                                    
      (_NEW_DEPTH|_NEW_STENCIL|_NEW_COLOR),             
      0,                                                
   },
   update_depth_stencil_alpha                           
}

Definition at line 144 of file st_atom_depth.c.

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