intel / DRI2: When available, use DRI2GetBuffersWithFormat

[mesa.git] / src / mesa / state_tracker / st_atom_depth.c

diff --git a/src/mesa/state_tracker/st_atom_depth.c b/src/mesa/state_tracker/st_atom_depth.c
index 7fc51953dc69e1027ab8c46c9412dc072cab588c..0aa128f94793af443677c4342720367b344ea70d 100644 (file)
--- a/src/mesa/state_tracker/st_atom_depth.c
+++ b/src/mesa/state_tracker/st_atom_depth.c
@@ -29,6 +29,7 @@
   * Authors:
   *   Keith Whitwell <keith@tungstengraphics.com>
   *   Brian Paul
+  *   Zack  Rusin
   */
  
 
@@ -36,13 +37,14 @@
 #include "st_atom.h"
 #include "pipe/p_context.h"
 #include "pipe/p_defines.h"
+#include "cso_cache/cso_context.h"
 
 
 /**
- * Convert GLenum depth func tokens to pipe tokens.
+ * Convert an OpenGL compare mode to a pipe tokens.
  */
-static GLuint
-gl_depth_func_to_sp(GLenum func)
+GLuint
+st_compare_func_to_pipe(GLenum func)
 {
    /* Same values, just biased */
    assert(PIPE_FUNC_NEVER == GL_NEVER - GL_NEVER);
@@ -59,34 +61,95 @@ gl_depth_func_to_sp(GLenum func)
 }
 
 
-static void 
-update_depth( struct st_context *st )
+/**
+ * Convert GLenum stencil op tokens to pipe tokens.
+ */
+static GLuint
+gl_stencil_op_to_pipe(GLenum func)
 {
-   struct pipe_depth_state depth;
+   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;
+   }
+}
 
-   memset(&depth, 0, sizeof(depth));
+static void
+update_depth_stencil_alpha(struct st_context *st)
+{
+   struct pipe_depth_stencil_alpha_state *dsa = &st->state.depth_stencil;
+   GLcontext *ctx = st->ctx;
 
-   depth.enabled = st->ctx->Depth.Test;
-   depth.writemask = st->ctx->Depth.Mask;
-   depth.func = gl_depth_func_to_sp(st->ctx->Depth.Func);
-   depth.clear = st->ctx->Depth.Clear;
+   memset(dsa, 0, sizeof(*dsa));
 
-   if (st->ctx->Query.CurrentOcclusionObject &&
-       st->ctx->Query.CurrentOcclusionObject->Active)
-      depth.occlusion_count = 1;
+   if (ctx->Depth.Test && ctx->DrawBuffer->Visual.depthBits > 0) {
+      dsa->depth.enabled = 1;
+      dsa->depth.writemask = ctx->Depth.Mask;
+      dsa->depth.func = st_compare_func_to_pipe(ctx->Depth.Func);
+   }
+
+   if (ctx->Query.CurrentOcclusionObject &&
+       ctx->Query.CurrentOcclusionObject->Active)
+      dsa->depth.occlusion_count = 1;
+
+   if (ctx->Stencil.Enabled && ctx->DrawBuffer->Visual.stencilBits > 0) {
+      dsa->stencil[0].enabled = 1;
+      dsa->stencil[0].func = st_compare_func_to_pipe(ctx->Stencil.Function[0]);
+      dsa->stencil[0].fail_op = gl_stencil_op_to_pipe(ctx->Stencil.FailFunc[0]);
+      dsa->stencil[0].zfail_op = gl_stencil_op_to_pipe(ctx->Stencil.ZFailFunc[0]);
+      dsa->stencil[0].zpass_op = gl_stencil_op_to_pipe(ctx->Stencil.ZPassFunc[0]);
+      dsa->stencil[0].ref_value = ctx->Stencil.Ref[0] & 0xff;
+      dsa->stencil[0].valuemask = ctx->Stencil.ValueMask[0] & 0xff;
+      dsa->stencil[0].writemask = ctx->Stencil.WriteMask[0] & 0xff;
 
-   if (memcmp(&depth, &st->state.depth, sizeof(depth)) != 0) {
-      /* state has changed */
-      st->state.depth = depth;  /* struct copy */
-      st->pipe->set_depth_state(st->pipe, &depth); /* set new state */
+      if (ctx->Stencil._TestTwoSide) {
+         const GLuint back = ctx->Stencil._BackFace;
+         dsa->stencil[1].enabled = 1;
+         dsa->stencil[1].func = st_compare_func_to_pipe(ctx->Stencil.Function[back]);
+         dsa->stencil[1].fail_op = gl_stencil_op_to_pipe(ctx->Stencil.FailFunc[back]);
+         dsa->stencil[1].zfail_op = gl_stencil_op_to_pipe(ctx->Stencil.ZFailFunc[back]);
+         dsa->stencil[1].zpass_op = gl_stencil_op_to_pipe(ctx->Stencil.ZPassFunc[back]);
+         dsa->stencil[1].ref_value = ctx->Stencil.Ref[back] & 0xff;
+         dsa->stencil[1].valuemask = ctx->Stencil.ValueMask[back] & 0xff;
+         dsa->stencil[1].writemask = ctx->Stencil.WriteMask[back] & 0xff;
+      }
+      else {
+         dsa->stencil[1] = dsa->stencil[0];
+         dsa->stencil[1].enabled = 0;
+      }
    }
+
+   if (ctx->Color.AlphaEnabled) {
+      dsa->alpha.enabled = 1;
+      dsa->alpha.func = st_compare_func_to_pipe(ctx->Color.AlphaFunc);
+      dsa->alpha.ref_value = ctx->Color.AlphaRef;
+   }
+
+   cso_set_depth_stencil_alpha(st->cso_context, dsa);
 }
 
 
-const struct st_tracked_state st_update_depth = {
-   .dirty = {
-      .mesa = (_NEW_DEPTH),
-      .st  = 0,
+const struct st_tracked_state st_update_depth_stencil_alpha = {
+   "st_update_depth_stencil",                          /* name */
+   {                                                   /* dirty */
+      (_NEW_DEPTH|_NEW_STENCIL|_NEW_COLOR),            /* mesa */
+      0,                                               /* st */
    },
-   .update = update_depth
+   update_depth_stencil_alpha                          /* update */
 };