gallium: add cap for MAX_VERTEX_ATTRIB_STRIDE

Signed-off-by: Timothy Arceri <t_arceri@yahoo.com.au>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>

src/gallium/docs/source/screen.rst

@@ -225,6 +225,7 @@ The integer capabilities:
   memory and GART.
 * ``PIPE_CAP_CONDITIONAL_RENDER_INVERTED``: Whether the driver supports inverted
   condition for conditional rendering.
+* ``PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE``: The maximum supported vertex stride.
 
 
 .. _pipe_capf:

src/gallium/drivers/freedreno/freedreno_screen.c

@@ -233,6 +233,9 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 	case PIPE_CAP_MAX_VERTEX_STREAMS:
 		return 0;
 
+	case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
+		return 2048;
+
 	/* Texturing. */
 	case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 	case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:

src/gallium/drivers/i915/i915_screen.c

@@ -275,6 +275,9 @@ i915_get_param(struct pipe_screen *screen, enum pipe_cap cap)
    case PIPE_CAP_MAX_VERTEX_STREAMS:
       return 0;
 
+   case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
+      return 2048;
+
    /* Fragment coordinate conventions. */
    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:

src/gallium/drivers/ilo/ilo_screen.c

@@ -382,6 +382,8 @@ ilo_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
       return false;
+   case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
+      return 2048;
    case PIPE_CAP_COMPUTE:
       return false; /* TODO */
    case PIPE_CAP_USER_INDEX_BUFFERS:

src/gallium/drivers/llvmpipe/lp_screen.c

@@ -196,6 +196,8 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
       return 1024;
    case PIPE_CAP_MAX_VERTEX_STREAMS:
       return 1;
+   case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
+      return 2048;
    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
       return 1;
    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:

src/gallium/drivers/nouveau/nv30/nv30_screen.c

@@ -71,6 +71,8 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
       return 16;
    case PIPE_CAP_MAX_VIEWPORTS:
       return 1;
+   case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
+      return 2048;
    /* supported capabilities */
    case PIPE_CAP_TWO_SIDED_STENCIL:
    case PIPE_CAP_ANISOTROPIC_FILTER:

src/gallium/drivers/nouveau/nv50/nv50_screen.c

@@ -117,6 +117,8 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
       return 1024;
    case PIPE_CAP_MAX_VERTEX_STREAMS:
       return 1;
+   case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
+      return 2048;
    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
       return 256;
    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:

src/gallium/drivers/nouveau/nvc0/nvc0_screen.c

@@ -104,6 +104,8 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
       return 1024;
    case PIPE_CAP_MAX_VERTEX_STREAMS:
       return 4;
+   case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
+      return 2048;
    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
       return 256;
    case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:

src/gallium/drivers/r300/r300_screen.c

@@ -211,6 +211,9 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
         case PIPE_CAP_MAX_VIEWPORTS:
             return 1;
 
+        case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
+            return 2048;
+
         case PIPE_CAP_VENDOR_ID:
                 return 0x1002;
         case PIPE_CAP_DEVICE_ID:

src/gallium/drivers/r600/r600_pipe.c

@@ -339,6 +339,9 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_MAX_VERTEX_STREAMS:
 		return 1;
 
+	case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
+		return 2047;
+
 	/* Texturing. */
 	case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 	case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:

src/gallium/drivers/radeonsi/si_pipe.c

@@ -278,6 +278,9 @@ static int si_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_MAX_VERTEX_STREAMS:
 		return 1;
 
+	case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
+		return 2048;
+
 	/* Texturing. */
 	case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 	case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:

src/gallium/drivers/softpipe/sp_screen.c

@@ -123,6 +123,8 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
       return 1024;
    case PIPE_CAP_MAX_VERTEX_STREAMS:
       return 1;
+   case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
+      return 2048;
    case PIPE_CAP_PRIMITIVE_RESTART:
       return 1;
    case PIPE_CAP_SHADER_STENCIL_EXPORT:

src/gallium/drivers/svga/svga_screen.c

@@ -285,6 +285,8 @@ svga_get_param(struct pipe_screen *screen, enum pipe_cap param)
       return 64;
    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
       return 1;
+   case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
+      return 2048;
    case PIPE_CAP_MAX_VIEWPORTS:
       return 1;
    case PIPE_CAP_ENDIANNESS:

src/gallium/drivers/vc4/vc4_screen.c

@@ -195,6 +195,9 @@ vc4_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
         case PIPE_CAP_MIN_TEXEL_OFFSET:
                 return 0;
 
+        case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
+                return 2048;
+
         case PIPE_CAP_ENDIANNESS:
                 return PIPE_ENDIAN_LITTLE;
 

src/gallium/include/pipe/p_defines.h

@@ -569,6 +569,7 @@ enum pipe_cap {
    PIPE_CAP_VIDEO_MEMORY = 106,
    PIPE_CAP_UMA = 107,
    PIPE_CAP_CONDITIONAL_RENDER_INVERTED = 108,
+   PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE = 109,
 };
 
 #define PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 (1 << 0)

src/mesa/state_tracker/st_extensions.c

@@ -289,6 +289,9 @@ void st_init_limits(struct pipe_screen *screen,
    /* The vertex stream must fit into pipe_stream_output_info::stream */
    assert(c->MaxVertexStreams <= 4);
 
+   c->MaxVertexAttribStride
+      = screen->get_param(screen, PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE);
+
    c->StripTextureBorder = GL_TRUE;
 
    c->GLSLSkipStrictMaxUniformLimitCheck =