freedreno/a3xx: add ARB_instanced_arrays support

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>

docs/relnotes/10.6.0.html

@@ -46,6 +46,7 @@ Note: some of the new features are only available with certain drivers.
 <ul>
 <li>GL_AMD_pinned_memory on r600, radeonsi</li>
 <li>GL_ARB_draw_instanced on freedreno</li>
+<li>GL_ARB_instanced_arrays on freedreno</li>
 <li>GL_ARB_pipeline_statistics_query on i965, nvc0, r600, radeonsi, softpipe</li>
 </ul>
 

src/gallium/drivers/freedreno/a3xx/fd3_emit.c

@@ -396,7 +396,8 @@ fd3_emit_vertex_bufs(struct fd_ringbuffer *ring, struct fd3_emit *emit)
 					A3XX_VFD_FETCH_INSTR_0_BUFSTRIDE(vb->stride) |
 					COND(switchnext, A3XX_VFD_FETCH_INSTR_0_SWITCHNEXT) |
 					A3XX_VFD_FETCH_INSTR_0_INDEXCODE(j) |
-					A3XX_VFD_FETCH_INSTR_0_STEPRATE(1));
+					COND(elem->instance_divisor, A3XX_VFD_FETCH_INSTR_0_INSTANCED) |
+					A3XX_VFD_FETCH_INSTR_0_STEPRATE(MAX2(1, elem->instance_divisor)));
 			OUT_RELOC(ring, rsc->bo, vb->buffer_offset + elem->src_offset, 0, 0);
 
 			OUT_PKT0(ring, REG_A3XX_VFD_DECODE_INSTR(j), 1);

src/gallium/drivers/freedreno/freedreno_screen.c

@@ -186,7 +186,6 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 	case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 	case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 	case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
-	case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 	case PIPE_CAP_START_INSTANCE:
 	case PIPE_CAP_COMPUTE:
 		return 0;
@@ -196,6 +195,7 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 		return is_a3xx(screen) || is_a4xx(screen);
 
 	case PIPE_CAP_TGSI_INSTANCEID:
+	case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 		return is_a3xx(screen) && glsl130;
 
 	case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT: