mesa: Move DepthMode to texture object

GL_DEPTH_TEXTURE_MODE isn't meant to be part of sampler state based on
compatibility profile specifications.

OpenGL specification 4.1 compatibility 20100725 3.9.2:
"... The values accepted in the pname parameter
are TEXTURE_WRAP_S, TEXTURE_WRAP_T, TEXTURE_WRAP_R, TEXTURE_MIN_-
FILTER, TEXTURE_MAG_FILTER, TEXTURE_BORDER_COLOR, TEXTURE_MIN_-
LOD, TEXTURE_MAX_LOD, TEXTURE_LOD_BIAS, TEXTURE_COMPARE_MODE, and
TEXTURE_COMPARE_FUNC. Texture state listed in table 6.25 but not listed here and
in the sampler state in table 6.26 is not part of the sampler state, and remains in the
texture object."

The list of states is in Table 6.24 "Textures (state per texture
object)" instead of 6.25 mentioned in the specification text.

Same can be found from 3.3 compatibility specification.

Signed-off-by: Pauli Nieminen <pauli.nieminen@linux.intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

src/mesa/drivers/dri/i915/i915_texstate.c

@@ -168,7 +168,7 @@ i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
    i915->state.tex_offset[unit] = intelObj->mt->offset;
 
    format = translate_texture_format(firstImage->TexFormat,
-				     sampler->DepthMode);
+				     tObj->DepthMode);
    pitch = intelObj->mt->region->pitch * intelObj->mt->cpp;
 
    state[I915_TEXREG_MS3] =

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

@@ -374,7 +374,7 @@ brw_populate_sampler_prog_key_data(struct gl_context *ctx,
 	     * format overrides because shadow comparison always returns the
 	     * result of the comparison in all channels anyway.
 	     */
-	    switch (sampler->DepthMode) {
+	    switch (t->DepthMode) {
 	    case GL_ALPHA:
 	       swizzles[0] = SWIZZLE_ZERO;
 	       swizzles[1] = SWIZZLE_ZERO;

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

@@ -732,7 +732,7 @@ brw_update_texture_surface( struct gl_context *ctx, GLuint unit )
 	      BRW_SURFACE_CUBEFACE_ENABLES |
 	      (translate_tex_format(mt->format,
 				    firstImage->InternalFormat,
-				    sampler->DepthMode,
+				    tObj->DepthMode,
 				    sampler->sRGBDecode) <<
 	       BRW_SURFACE_FORMAT_SHIFT));
 

src/mesa/drivers/dri/i965/gen7_wm_surface_state.c

@@ -296,7 +296,7 @@ gen7_update_texture_surface(struct gl_context *ctx, GLuint unit)
    surf->ss0.surface_type = translate_tex_target(tObj->Target);
    surf->ss0.surface_format = translate_tex_format(mt->format,
                                                    firstImage->InternalFormat,
-                                                   sampler->DepthMode,
+                                                   tObj->DepthMode,
                                                    sampler->sRGBDecode);
    if (tObj->Target == GL_TEXTURE_CUBE_MAP) {
       surf->ss0.cube_pos_x = 1;

src/mesa/main/attrib.c

@@ -806,7 +806,7 @@ pop_texture_group(struct gl_context *ctx, struct texture_state *texstate)
                                 samp->CompareFunc);
          }
          if (ctx->Extensions.ARB_depth_texture)
-            _mesa_TexParameteri(target, GL_DEPTH_TEXTURE_MODE, samp->DepthMode);
+            _mesa_TexParameteri(target, GL_DEPTH_TEXTURE_MODE, obj->DepthMode);
       }
 
       /* remove saved references to the texture objects */

src/mesa/main/mtypes.h

@@ -1253,9 +1253,6 @@ struct gl_sampler_object
    GLfloat CompareFailValue;    /**< GL_ARB_shadow_ambient */
    GLenum sRGBDecode;           /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
    GLboolean CubeMapSeamless;   /**< GL_AMD_seamless_cubemap_per_texture */
-
-   /* deprecated sampler state */
-   GLenum DepthMode;		/**< GL_ARB_depth_texture */
 };
 
 
@@ -1272,6 +1269,8 @@ struct gl_texture_object
 
    struct gl_sampler_object Sampler;
 
+   GLenum DepthMode;		/**< GL_ARB_depth_texture */
+
    GLfloat Priority;		/**< in [0,1] */
    GLint BaseLevel;		/**< min mipmap level, OpenGL 1.2 */
    GLint MaxLevel;		/**< max mipmap level, OpenGL 1.2 */

src/mesa/main/samplerobj.c

@@ -133,10 +133,8 @@ _mesa_init_sampler_object(struct gl_sampler_object *sampObj, GLuint name)
    sampObj->CompareFailValue = 0.0;
    sampObj->sRGBDecode = GL_DECODE_EXT;
    sampObj->CubeMapSeamless = GL_FALSE;
-   sampObj->DepthMode = 0;
 }
 
-
 /**
  * Fallback for ctx->Driver.NewSamplerObject();
  */

src/mesa/main/texobj.c

@@ -145,7 +145,7 @@ _mesa_initialize_texture_object( struct gl_texture_object *obj,
    obj->Sampler.CompareMode = GL_NONE;         /* ARB_shadow */
    obj->Sampler.CompareFunc = GL_LEQUAL;       /* ARB_shadow */
    obj->Sampler.CompareFailValue = 0.0F;       /* ARB_shadow_ambient */
-   obj->Sampler.DepthMode = GL_LUMINANCE;      /* ARB_depth_texture */
+   obj->DepthMode = GL_LUMINANCE;
    obj->Sampler.CubeMapSeamless = GL_FALSE;
    obj->Swizzle[0] = GL_RED;
    obj->Swizzle[1] = GL_GREEN;
@@ -259,7 +259,7 @@ _mesa_copy_texture_object( struct gl_texture_object *dest,
    dest->Sampler.CompareFunc = src->Sampler.CompareFunc;
    dest->Sampler.CompareFailValue = src->Sampler.CompareFailValue;
    dest->Sampler.CubeMapSeamless = src->Sampler.CubeMapSeamless;
-   dest->Sampler.DepthMode = src->Sampler.DepthMode;
+   dest->DepthMode = src->DepthMode;
    dest->Sampler.sRGBDecode = src->Sampler.sRGBDecode;
    dest->_MaxLevel = src->_MaxLevel;
    dest->_MaxLambda = src->_MaxLambda;

src/mesa/main/texparam.c

@@ -383,14 +383,14 @@ set_tex_parameteri(struct gl_context *ctx,
 
    case GL_DEPTH_TEXTURE_MODE_ARB:
       if (ctx->Extensions.ARB_depth_texture) {
-         if (texObj->Sampler.DepthMode == params[0])
+         if (texObj->DepthMode == params[0])
             return GL_FALSE;
          if (params[0] == GL_LUMINANCE ||
              params[0] == GL_INTENSITY ||
              params[0] == GL_ALPHA ||
              (ctx->Extensions.ARB_texture_rg && params[0] == GL_RED)) {
             flush(ctx);
-            texObj->Sampler.DepthMode = params[0];
+            texObj->DepthMode = params[0];
             return GL_TRUE;
          }
          goto invalid_param;
@@ -1157,7 +1157,7 @@ _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
       case GL_DEPTH_TEXTURE_MODE_ARB:
          if (!ctx->Extensions.ARB_depth_texture)
             goto invalid_pname;
-         *params = (GLfloat) obj->Sampler.DepthMode;
+         *params = (GLfloat) obj->DepthMode;
          break;
       case GL_TEXTURE_LOD_BIAS:
          *params = obj->Sampler.LodBias;
@@ -1303,7 +1303,7 @@ _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
       case GL_DEPTH_TEXTURE_MODE_ARB:
          if (!ctx->Extensions.ARB_depth_texture)
             goto invalid_pname;
-         *params = (GLint) obj->Sampler.DepthMode;
+         *params = (GLint) obj->DepthMode;
          break;
       case GL_TEXTURE_LOD_BIAS:
          *params = (GLint) obj->Sampler.LodBias;

src/mesa/main/texstate.c

@@ -407,7 +407,7 @@ update_tex_combine(struct gl_context *ctx, struct gl_texture_unit *texUnit)
       GLenum format = texObj->Image[0][texObj->BaseLevel]->_BaseFormat;
 
       if (format == GL_DEPTH_COMPONENT || format == GL_DEPTH_STENCIL_EXT) {
-         format = texObj->Sampler.DepthMode;
+         format = texObj->DepthMode;
       }
       calculate_derived_texenv(&texUnit->_EnvMode, texUnit->EnvMode, format);
       texUnit->_CurrentCombine = & texUnit->_EnvMode;

src/mesa/state_tracker/st_atom_texture.c

@@ -147,7 +147,7 @@ st_create_texture_sampler_view_from_stobj(struct pipe_context *pipe,
    struct pipe_sampler_view templ;
    GLuint swizzle = apply_depthmode(stObj->pt->format,
                                     stObj->base._Swizzle,
-                                    samp->DepthMode);
+                                    stObj->base.DepthMode);
 
    u_sampler_view_default_template(&templ,
                                    stObj->pt,
@@ -240,7 +240,7 @@ update_single_texture(struct st_context *st,
    if (stObj->sampler_view) {
       if (check_sampler_swizzle(stObj->sampler_view,
 				stObj->base._Swizzle,
-				samp->DepthMode) ||
+				stObj->base.DepthMode) ||
 	  (st_view_format != stObj->sampler_view->format) ||
 	  stObj->base.BaseLevel != stObj->sampler_view->u.tex.first_level) {
 	 pipe_sampler_view_reference(&stObj->sampler_view, NULL);

src/mesa/swrast/s_texfilter.c

@@ -3468,7 +3468,7 @@ sample_depth_texture( struct gl_context *ctx,
 
          result = shadow_compare(function, depthRef, depthSample, ambient);
 
-         switch (tObj->Sampler.DepthMode) {
+         switch (tObj->DepthMode) {
          case GL_LUMINANCE:
             ASSIGN_4V(texel[i], result, result, result, 1.0F);
             break;
@@ -3563,7 +3563,7 @@ sample_depth_texture( struct gl_context *ctx,
                                   depth00, depth01, depth10, depth11,
                                   ambient, wi, wj);
 
-         switch (tObj->Sampler.DepthMode) {
+         switch (tObj->DepthMode) {
          case GL_LUMINANCE:
             ASSIGN_4V(texel[i], result, result, result, 1.0F);
             break;