gallium: add PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS

v2: remove PIPE_CAP_ARRAY_TEXTURES in favor of the new CAP.

src/gallium/drivers/i915/i915_screen.c

@@ -124,7 +124,7 @@ i915_get_param(struct pipe_screen *screen, enum pipe_cap cap)
       return is->debug.lie ? 1 : 0;
 
    /* Unsupported features (boolean caps). */
-   case PIPE_CAP_ARRAY_TEXTURES:
+   case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
    case PIPE_CAP_DEPTH_CLAMP:
    case PIPE_CAP_INDEP_BLEND_ENABLE:
    case PIPE_CAP_INDEP_BLEND_FUNC:

src/gallium/drivers/nv50/nv50_screen.c

@@ -88,7 +88,7 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
       return 10;
    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
       return 13;
-   case PIPE_CAP_ARRAY_TEXTURES: /* shader support missing */
+   case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS: /* shader support missing */
       return 0;
    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:

src/gallium/drivers/nvc0/nvc0_screen.c

@@ -79,8 +79,8 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
       return 10;
    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
       return 13;
-   case PIPE_CAP_ARRAY_TEXTURES:
-      return 1;
+   case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
+      return 8192;
    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
    case PIPE_CAP_TEXTURE_SWIZZLE:

src/gallium/drivers/nvfx/nvfx_screen.c

@@ -85,7 +85,7 @@ nvfx_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 		return 0; // TODO: implement depth clamp
 	case PIPE_CAP_PRIMITIVE_RESTART:
 		return 0; // TODO: implement primitive restart
-	case PIPE_CAP_ARRAY_TEXTURES:
+	case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 	case PIPE_CAP_TGSI_INSTANCEID:
 	case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 	case PIPE_CAP_FRAGMENT_COLOR_CLAMP_CONTROL:

src/gallium/drivers/r300/r300_screen.c

@@ -135,7 +135,7 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
         case PIPE_CAP_DEPTH_CLAMP:
         case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
         case PIPE_CAP_SHADER_STENCIL_EXPORT:
-        case PIPE_CAP_ARRAY_TEXTURES:
+        case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
         case PIPE_CAP_TGSI_INSTANCEID:
         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:

src/gallium/drivers/r600/r600_pipe.c

@@ -380,9 +380,8 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 		return 0;
 
-	case PIPE_CAP_ARRAY_TEXTURES:
-		/* fix once the CS checker upstream is fixed */
-		return debug_get_bool_option("R600_ARRAY_TEXTURE", FALSE);
+	case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
+		return 0; /* will be re-enabled in the following commits. */
 
 	/* Texturing. */
 	case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:

src/gallium/drivers/softpipe/sp_screen.c

@@ -129,8 +129,8 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_TGSI_INSTANCEID:
    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
       return 1;
-   case PIPE_CAP_ARRAY_TEXTURES:
-      return 1;
+   case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
+      return 64; /* matches core Mesa defaults */
    case PIPE_CAP_MIN_TEXEL_OFFSET:
       return -8;
    case PIPE_CAP_MAX_TEXEL_OFFSET:

src/gallium/include/pipe/p_defines.h

@@ -458,7 +458,7 @@ enum pipe_cap {
    /** different blend funcs per rendertarget */
    PIPE_CAP_INDEP_BLEND_FUNC = 34,
    PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE = 35,
-   PIPE_CAP_ARRAY_TEXTURES = 36,
+   PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS = 36,
    PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT = 37,
    PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT = 38,
    PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER = 39,

src/mesa/state_tracker/st_extensions.c

@@ -85,6 +85,9 @@ void st_init_limits(struct st_context *st)
    c->MaxTextureRectSize
       = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
 
+   c->MaxArrayTextureLayers
+      = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS);
+
    c->MaxTextureImageUnits
       = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS),
             MAX_TEXTURE_IMAGE_UNITS);
@@ -505,7 +508,7 @@ void st_init_extensions(struct st_context *st)
    }
 
    /* GL_EXT_texture_array */
-   if (screen->get_param(screen, PIPE_CAP_ARRAY_TEXTURES)) {
+   if (screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS) > 1) {
       ctx->Extensions.EXT_texture_array = GL_TRUE;
       ctx->Extensions.MESA_texture_array = GL_TRUE;
    }