mesa/main: Add more OpenGL ES types to glheader.h.

[mesa.git] / src / mesa / swrast / s_fragprog.c

diff --git a/src/mesa/swrast/s_fragprog.c b/src/mesa/swrast/s_fragprog.c
index 144f78b024acf4b2452de10653bc67fd4907c307..77a77f0bcbb0e838bb1b6d646985ca72c734333c 100644 (file)
--- a/src/mesa/swrast/s_fragprog.c
+++ b/src/mesa/swrast/s_fragprog.c
@@ -89,6 +89,8 @@ fetch_texel_lod( GLcontext *ctx, const GLfloat texcoord[4], GLfloat lambda,
  * Fetch a texel with the given partial derivatives to compute a level
  * of detail in the mipmap.
  * Called via machine->FetchTexelDeriv()
+ * \param lodBias  the lod bias which may be specified by a TXB instruction,
+ *                 otherwise zero.
  */
 static void
 fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4],
@@ -96,7 +98,8 @@ fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4],
                    GLfloat lodBias, GLuint unit, GLfloat color[4] )
 {
    SWcontext *swrast = SWRAST_CONTEXT(ctx);
-   const struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current;
+   const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+   const struct gl_texture_object *texObj = texUnit->_Current;
 
    if (texObj) {
       const struct gl_texture_image *texImg =
@@ -111,7 +114,9 @@ fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4],
                                       texdx[3], texdy[3], /* dq/dx, dq/dy */
                                       texW, texH,
                                       texcoord[0], texcoord[1], texcoord[3],
-                                      1.0F / texcoord[3]) + lodBias;
+                                      1.0F / texcoord[3]);
+
+      lambda += lodBias + texUnit->LodBias + texObj->LodBias;
 
       lambda = CLAMP(lambda, texObj->MinLod, texObj->MaxLod);
 
@@ -157,9 +162,8 @@ init_machine(GLcontext *ctx, struct gl_program_machine *machine,
 
    /* if running a GLSL program (not ARB_fragment_program) */
    if (ctx->Shader.CurrentProgram) {
-      /* Store front/back facing value in register FOGC.Y */
-      machine->Attribs[FRAG_ATTRIB_FOGC][col][1] = 1.0 - span->facing;
-      /* Note FOGC.ZW is gl_PointCoord if drawing a sprite */
+      /* Store front/back facing value */
+      machine->Attribs[FRAG_ATTRIB_FACE][col][0] = 1.0 - span->facing;
    }
 
    machine->CurElement = col;