util/format: initialize non-important components to 0
[mesa.git] / src / mesa / swrast_setup / ss_tritmp.h
index 5844ad594cd0f9dce340d2665e678c679a257d17..c88747274bdc10749aaa1fe748f54795fbad647e 100644 (file)
@@ -1,6 +1,5 @@
 /*
  * Mesa 3-D graphics library
- * Version:  7.1
  *
  * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
  *
  * Authors:
- *    Keith Whitwell <keith@tungstengraphics.com>
+ *    Keith Whitwell <keithw@vmware.com>
  */
 
 
@@ -50,15 +50,15 @@ static void TAG(triangle)(struct gl_context *ctx, GLuint e0, GLuint e1, GLuint e
 
    if (IND & (SS_TWOSIDE_BIT | SS_OFFSET_BIT | SS_UNFILLED_BIT))
    {
-      GLfloat ex = v[0]->attrib[FRAG_ATTRIB_WPOS][0] - v[2]->attrib[FRAG_ATTRIB_WPOS][0];
-      GLfloat ey = v[0]->attrib[FRAG_ATTRIB_WPOS][1] - v[2]->attrib[FRAG_ATTRIB_WPOS][1];
-      GLfloat fx = v[1]->attrib[FRAG_ATTRIB_WPOS][0] - v[2]->attrib[FRAG_ATTRIB_WPOS][0];
-      GLfloat fy = v[1]->attrib[FRAG_ATTRIB_WPOS][1] - v[2]->attrib[FRAG_ATTRIB_WPOS][1];
+      GLfloat ex = v[0]->attrib[VARYING_SLOT_POS][0] - v[2]->attrib[VARYING_SLOT_POS][0];
+      GLfloat ey = v[0]->attrib[VARYING_SLOT_POS][1] - v[2]->attrib[VARYING_SLOT_POS][1];
+      GLfloat fx = v[1]->attrib[VARYING_SLOT_POS][0] - v[2]->attrib[VARYING_SLOT_POS][0];
+      GLfloat fy = v[1]->attrib[VARYING_SLOT_POS][1] - v[2]->attrib[VARYING_SLOT_POS][1];
       GLfloat cc  = ex*fy - ey*fx;
 
       if (IND & (SS_TWOSIDE_BIT | SS_UNFILLED_BIT))
       {
-        facing = (cc < 0.0) ^ ctx->Polygon._FrontBit;
+        facing = (cc < 0.0F) ^ _mesa_polygon_get_front_bit(ctx);
 
         if (IND & SS_UNFILLED_BIT)
            mode = facing ? ctx->Polygon.BackMode : ctx->Polygon.FrontMode;
@@ -74,9 +74,9 @@ static void TAG(triangle)(struct gl_context *ctx, GLuint e0, GLuint e1, GLuint e
                      COPY_CHAN4(saved_color[2], v[2]->color);
                   }
                   else {
-                     COPY_4V(saved_col0[0], v[0]->attrib[FRAG_ATTRIB_COL0]);
-                     COPY_4V(saved_col0[1], v[1]->attrib[FRAG_ATTRIB_COL0]);
-                     COPY_4V(saved_col0[2], v[2]->attrib[FRAG_ATTRIB_COL0]);
+                     COPY_4V(saved_col0[0], v[0]->attrib[VARYING_SLOT_COL0]);
+                     COPY_4V(saved_col0[1], v[1]->attrib[VARYING_SLOT_COL0]);
+                     COPY_4V(saved_col0[2], v[2]->attrib[VARYING_SLOT_COL0]);
                   }
 
                   if (VB->BackfaceColorPtr->stride) {
@@ -86,9 +86,9 @@ static void TAG(triangle)(struct gl_context *ctx, GLuint e0, GLuint e1, GLuint e
                         SS_COLOR(v[2]->color, vbcolor[e2]);
                      }
                      else {
-                        COPY_4V(v[0]->attrib[FRAG_ATTRIB_COL0], vbcolor[e0]);
-                        COPY_4V(v[1]->attrib[FRAG_ATTRIB_COL0], vbcolor[e1]);
-                        COPY_4V(v[2]->attrib[FRAG_ATTRIB_COL0], vbcolor[e2]);
+                        COPY_4V(v[0]->attrib[VARYING_SLOT_COL0], vbcolor[e0]);
+                        COPY_4V(v[1]->attrib[VARYING_SLOT_COL0], vbcolor[e1]);
+                        COPY_4V(v[2]->attrib[VARYING_SLOT_COL0], vbcolor[e2]);
                      }
                   }
                   else {
@@ -99,9 +99,9 @@ static void TAG(triangle)(struct gl_context *ctx, GLuint e0, GLuint e1, GLuint e
                         SS_COLOR(v[2]->color, vbcolor[0]);
                      }
                      else {
-                        COPY_4V(v[0]->attrib[FRAG_ATTRIB_COL0], vbcolor[0]);
-                        COPY_4V(v[1]->attrib[FRAG_ATTRIB_COL0], vbcolor[0]);
-                        COPY_4V(v[2]->attrib[FRAG_ATTRIB_COL0], vbcolor[0]);
+                        COPY_4V(v[0]->attrib[VARYING_SLOT_COL0], vbcolor[0]);
+                        COPY_4V(v[1]->attrib[VARYING_SLOT_COL0], vbcolor[0]);
+                        COPY_4V(v[2]->attrib[VARYING_SLOT_COL0], vbcolor[0]);
                      }
                   }
                }
@@ -109,19 +109,19 @@ static void TAG(triangle)(struct gl_context *ctx, GLuint e0, GLuint e1, GLuint e
                if (VB->BackfaceSecondaryColorPtr) {
                  GLfloat (*vbspec)[4] = VB->BackfaceSecondaryColorPtr->data;
 
-                 COPY_4V(saved_spec[0], v[0]->attrib[FRAG_ATTRIB_COL1]);
-                 COPY_4V(saved_spec[1], v[1]->attrib[FRAG_ATTRIB_COL1]);
-                 COPY_4V(saved_spec[2], v[2]->attrib[FRAG_ATTRIB_COL1]);
+                 COPY_4V(saved_spec[0], v[0]->attrib[VARYING_SLOT_COL1]);
+                 COPY_4V(saved_spec[1], v[1]->attrib[VARYING_SLOT_COL1]);
+                 COPY_4V(saved_spec[2], v[2]->attrib[VARYING_SLOT_COL1]);
 
                  if (VB->BackfaceSecondaryColorPtr->stride) {
-                   SS_SPEC(v[0]->attrib[FRAG_ATTRIB_COL1], vbspec[e0]);
-                   SS_SPEC(v[1]->attrib[FRAG_ATTRIB_COL1], vbspec[e1]);
-                   SS_SPEC(v[2]->attrib[FRAG_ATTRIB_COL1], vbspec[e2]);
+                   SS_SPEC(v[0]->attrib[VARYING_SLOT_COL1], vbspec[e0]);
+                   SS_SPEC(v[1]->attrib[VARYING_SLOT_COL1], vbspec[e1]);
+                   SS_SPEC(v[2]->attrib[VARYING_SLOT_COL1], vbspec[e2]);
                  }
                  else {
-                   SS_SPEC(v[0]->attrib[FRAG_ATTRIB_COL1], vbspec[0]);
-                   SS_SPEC(v[1]->attrib[FRAG_ATTRIB_COL1], vbspec[0]);
-                   SS_SPEC(v[2]->attrib[FRAG_ATTRIB_COL1], vbspec[0]);
+                   SS_SPEC(v[0]->attrib[VARYING_SLOT_COL1], vbspec[0]);
+                   SS_SPEC(v[1]->attrib[VARYING_SLOT_COL1], vbspec[0]);
+                   SS_SPEC(v[2]->attrib[VARYING_SLOT_COL1], vbspec[0]);
                  }
               }
            }
@@ -131,47 +131,47 @@ static void TAG(triangle)(struct gl_context *ctx, GLuint e0, GLuint e1, GLuint e
       if (IND & SS_OFFSET_BIT) {
          const GLfloat max = ctx->DrawBuffer->_DepthMaxF;
          /* save original Z values (restored later) */
-        z[0] = v[0]->attrib[FRAG_ATTRIB_WPOS][2];
-        z[1] = v[1]->attrib[FRAG_ATTRIB_WPOS][2];
-        z[2] = v[2]->attrib[FRAG_ATTRIB_WPOS][2];
+        z[0] = v[0]->attrib[VARYING_SLOT_POS][2];
+        z[1] = v[1]->attrib[VARYING_SLOT_POS][2];
+        z[2] = v[2]->attrib[VARYING_SLOT_POS][2];
          /* Note that Z values are already scaled to [0,65535] (for example)
           * so no MRD value is used here.
           */
         offset = ctx->Polygon.OffsetUnits;
-        if (cc * cc > 1e-16) {
+        if (cc * cc > 1e-16F) {
            const GLfloat ez = z[0] - z[2];
            const GLfloat fz = z[1] - z[2];
            const GLfloat oneOverArea = 1.0F / cc;
-           const GLfloat dzdx = FABSF((ey * fz - ez * fy) * oneOverArea);
-           const GLfloat dzdy = FABSF((ez * fx - ex * fz) * oneOverArea);
+           const GLfloat dzdx = fabsf((ey * fz - ez * fy) * oneOverArea);
+           const GLfloat dzdy = fabsf((ez * fx - ex * fz) * oneOverArea);
            offset += MAX2(dzdx, dzdy) * ctx->Polygon.OffsetFactor;
         }
          /* new Z values */
-         oz0 = CLAMP(v[0]->attrib[FRAG_ATTRIB_WPOS][2] + offset, 0.0F, max);
-         oz1 = CLAMP(v[1]->attrib[FRAG_ATTRIB_WPOS][2] + offset, 0.0F, max);
-         oz2 = CLAMP(v[2]->attrib[FRAG_ATTRIB_WPOS][2] + offset, 0.0F, max);
+         oz0 = CLAMP(v[0]->attrib[VARYING_SLOT_POS][2] + offset, 0.0F, max);
+         oz1 = CLAMP(v[1]->attrib[VARYING_SLOT_POS][2] + offset, 0.0F, max);
+         oz2 = CLAMP(v[2]->attrib[VARYING_SLOT_POS][2] + offset, 0.0F, max);
       }
    }
 
    if (mode == GL_POINT) {
       if ((IND & SS_OFFSET_BIT) && ctx->Polygon.OffsetPoint) {
-        v[0]->attrib[FRAG_ATTRIB_WPOS][2] = oz0;
-        v[1]->attrib[FRAG_ATTRIB_WPOS][2] = oz1;
-        v[2]->attrib[FRAG_ATTRIB_WPOS][2] = oz2;
+        v[0]->attrib[VARYING_SLOT_POS][2] = oz0;
+        v[1]->attrib[VARYING_SLOT_POS][2] = oz1;
+        v[2]->attrib[VARYING_SLOT_POS][2] = oz2;
       }
       _swsetup_render_tri(ctx, e0, e1, e2, facing, _swsetup_edge_render_point_tri);
    } else if (mode == GL_LINE) {
       if ((IND & SS_OFFSET_BIT) && ctx->Polygon.OffsetLine) {
-        v[0]->attrib[FRAG_ATTRIB_WPOS][2] = oz0;
-        v[1]->attrib[FRAG_ATTRIB_WPOS][2] = oz1;
-        v[2]->attrib[FRAG_ATTRIB_WPOS][2] = oz2;
+        v[0]->attrib[VARYING_SLOT_POS][2] = oz0;
+        v[1]->attrib[VARYING_SLOT_POS][2] = oz1;
+        v[2]->attrib[VARYING_SLOT_POS][2] = oz2;
       }
       _swsetup_render_tri(ctx, e0, e1, e2, facing, _swsetup_edge_render_line_tri);
    } else {
       if ((IND & SS_OFFSET_BIT) && ctx->Polygon.OffsetFill) {
-        v[0]->attrib[FRAG_ATTRIB_WPOS][2] = oz0;
-        v[1]->attrib[FRAG_ATTRIB_WPOS][2] = oz1;
-        v[2]->attrib[FRAG_ATTRIB_WPOS][2] = oz2;
+        v[0]->attrib[VARYING_SLOT_POS][2] = oz0;
+        v[1]->attrib[VARYING_SLOT_POS][2] = oz1;
+        v[2]->attrib[VARYING_SLOT_POS][2] = oz2;
       }
       _swrast_Triangle( ctx, v[0], v[1], v[2] );
    }
@@ -180,9 +180,9 @@ static void TAG(triangle)(struct gl_context *ctx, GLuint e0, GLuint e1, GLuint e
     * Restore original vertex colors, etc.
     */
    if (IND & SS_OFFSET_BIT) {
-      v[0]->attrib[FRAG_ATTRIB_WPOS][2] = z[0];
-      v[1]->attrib[FRAG_ATTRIB_WPOS][2] = z[1];
-      v[2]->attrib[FRAG_ATTRIB_WPOS][2] = z[2];
+      v[0]->attrib[VARYING_SLOT_POS][2] = z[0];
+      v[1]->attrib[VARYING_SLOT_POS][2] = z[1];
+      v[2]->attrib[VARYING_SLOT_POS][2] = z[2];
    }
 
    if (IND & SS_TWOSIDE_BIT) {
@@ -194,16 +194,16 @@ static void TAG(triangle)(struct gl_context *ctx, GLuint e0, GLuint e1, GLuint e
            COPY_CHAN4(v[2]->color, saved_color[2]);
          }
          else {
-           COPY_4V(v[0]->attrib[FRAG_ATTRIB_COL0], saved_col0[0]);
-           COPY_4V(v[1]->attrib[FRAG_ATTRIB_COL0], saved_col0[1]);
-           COPY_4V(v[2]->attrib[FRAG_ATTRIB_COL0], saved_col0[2]);
+           COPY_4V(v[0]->attrib[VARYING_SLOT_COL0], saved_col0[0]);
+           COPY_4V(v[1]->attrib[VARYING_SLOT_COL0], saved_col0[1]);
+           COPY_4V(v[2]->attrib[VARYING_SLOT_COL0], saved_col0[2]);
          }
        }
 
        if (VB->BackfaceSecondaryColorPtr) {
-         COPY_4V(v[0]->attrib[FRAG_ATTRIB_COL1], saved_spec[0]);
-         COPY_4V(v[1]->attrib[FRAG_ATTRIB_COL1], saved_spec[1]);
-         COPY_4V(v[2]->attrib[FRAG_ATTRIB_COL1], saved_spec[2]);
+         COPY_4V(v[0]->attrib[VARYING_SLOT_COL1], saved_spec[0]);
+         COPY_4V(v[1]->attrib[VARYING_SLOT_COL1], saved_spec[1]);
+         COPY_4V(v[2]->attrib[VARYING_SLOT_COL1], saved_spec[2]);
        }
       }
    }