-static void *
-create_pbo_upload_vs(struct st_context *st)
-{
- struct ureg_program *ureg;
- struct ureg_src in_pos;
- struct ureg_src in_instanceid;
- struct ureg_dst out_pos;
- struct ureg_dst out_layer;
-
- ureg = ureg_create(TGSI_PROCESSOR_VERTEX);
- if (!ureg)
- return NULL;
-
- in_pos = ureg_DECL_vs_input(ureg, TGSI_SEMANTIC_POSITION);
-
- out_pos = ureg_DECL_output(ureg, TGSI_SEMANTIC_POSITION, 0);
-
- if (st->pbo_upload.upload_layers) {
- in_instanceid = ureg_DECL_system_value(ureg, TGSI_SEMANTIC_INSTANCEID, 0);
-
- if (!st->pbo_upload.use_gs)
- out_layer = ureg_DECL_output(ureg, TGSI_SEMANTIC_LAYER, 0);
- }
-
- /* out_pos = in_pos */
- ureg_MOV(ureg, out_pos, in_pos);
-
- if (st->pbo_upload.upload_layers) {
- if (st->pbo_upload.use_gs) {
- /* out_pos.z = i2f(gl_InstanceID) */
- ureg_I2F(ureg, ureg_writemask(out_pos, TGSI_WRITEMASK_Z),
- ureg_scalar(in_instanceid, TGSI_SWIZZLE_X));
- } else {
- /* out_layer = gl_InstanceID */
- ureg_MOV(ureg, out_layer, in_instanceid);
- }
- }
-
- ureg_END(ureg);
-
- return ureg_create_shader_and_destroy(ureg, st->pipe);
-}
-
-static void *
-create_pbo_upload_gs(struct st_context *st)
-{
- static const int zero = 0;
- struct ureg_program *ureg;
- struct ureg_dst out_pos;
- struct ureg_dst out_layer;
- struct ureg_src in_pos;
- struct ureg_src imm;
- unsigned i;
-
- ureg = ureg_create(TGSI_PROCESSOR_GEOMETRY);
- if (!ureg)
- return NULL;
-
- ureg_property(ureg, TGSI_PROPERTY_GS_INPUT_PRIM, PIPE_PRIM_TRIANGLES);
- ureg_property(ureg, TGSI_PROPERTY_GS_OUTPUT_PRIM, PIPE_PRIM_TRIANGLE_STRIP);
- ureg_property(ureg, TGSI_PROPERTY_GS_MAX_OUTPUT_VERTICES, 3);
-
- out_pos = ureg_DECL_output(ureg, TGSI_SEMANTIC_POSITION, 0);
- out_layer = ureg_DECL_output(ureg, TGSI_SEMANTIC_LAYER, 0);
-
- in_pos = ureg_DECL_input(ureg, TGSI_SEMANTIC_POSITION, 0, 0, 1);
-
- imm = ureg_DECL_immediate_int(ureg, &zero, 1);
-
- for (i = 0; i < 3; ++i) {
- struct ureg_src in_pos_vertex = ureg_src_dimension(in_pos, i);
-
- /* out_pos = in_pos[i] */
- ureg_MOV(ureg, out_pos, in_pos_vertex);
-
- /* out_layer.x = f2i(in_pos[i].z) */
- ureg_F2I(ureg, ureg_writemask(out_layer, TGSI_WRITEMASK_X),
- ureg_scalar(in_pos_vertex, TGSI_SWIZZLE_Z));
-
- ureg_EMIT(ureg, ureg_scalar(imm, TGSI_SWIZZLE_X));
- }
-
- ureg_END(ureg);
-
- return ureg_create_shader_and_destroy(ureg, st->pipe);
-}
-
-static void *
-create_pbo_upload_fs(struct st_context *st)
-{
- struct pipe_context *pipe = st->pipe;
- struct pipe_screen *screen = pipe->screen;
- struct ureg_program *ureg;
- struct ureg_dst out;
- struct ureg_src sampler;
- struct ureg_src pos;
- struct ureg_src layer;
- struct ureg_src const0;
- struct ureg_dst temp0;
-
- ureg = ureg_create(TGSI_PROCESSOR_FRAGMENT);
- if (!ureg)
- return NULL;
-
- out = ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, 0);
- sampler = ureg_DECL_sampler(ureg, 0);
- if (screen->get_param(screen, PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL)) {
- pos = ureg_DECL_system_value(ureg, TGSI_SEMANTIC_POSITION, 0);
- } else {
- pos = ureg_DECL_fs_input(ureg, TGSI_SEMANTIC_POSITION, 0,
- TGSI_INTERPOLATE_LINEAR);
- }
- if (st->pbo_upload.upload_layers) {
- layer = ureg_DECL_fs_input(ureg, TGSI_SEMANTIC_LAYER, 0,
- TGSI_INTERPOLATE_CONSTANT);
- }
- const0 = ureg_DECL_constant(ureg, 0);
- temp0 = ureg_DECL_temporary(ureg);
-
- /* Note: const0 = [ -xoffset + skip_pixels, -yoffset, stride, image_height ] */
-
- /* temp0.xy = f2i(temp0.xy) */
- ureg_F2I(ureg, ureg_writemask(temp0, TGSI_WRITEMASK_XY),
- ureg_swizzle(pos,
- TGSI_SWIZZLE_X, TGSI_SWIZZLE_Y,
- TGSI_SWIZZLE_Y, TGSI_SWIZZLE_Y));
-
- /* temp0.xy = temp0.xy + const0.xy */
- ureg_UADD(ureg, ureg_writemask(temp0, TGSI_WRITEMASK_XY),
- ureg_swizzle(ureg_src(temp0),
- TGSI_SWIZZLE_X, TGSI_SWIZZLE_Y,
- TGSI_SWIZZLE_Y, TGSI_SWIZZLE_Y),
- ureg_swizzle(const0,
- TGSI_SWIZZLE_X, TGSI_SWIZZLE_Y,
- TGSI_SWIZZLE_Y, TGSI_SWIZZLE_Y));
-
- /* temp0.x = const0.z * temp0.y + temp0.x */
- ureg_UMAD(ureg, ureg_writemask(temp0, TGSI_WRITEMASK_X),
- ureg_scalar(const0, TGSI_SWIZZLE_Z),
- ureg_scalar(ureg_src(temp0), TGSI_SWIZZLE_Y),
- ureg_scalar(ureg_src(temp0), TGSI_SWIZZLE_X));
-
- if (st->pbo_upload.upload_layers) {
- /* temp0.x = const0.w * layer + temp0.x */
- ureg_UMAD(ureg, ureg_writemask(temp0, TGSI_WRITEMASK_X),
- ureg_scalar(const0, TGSI_SWIZZLE_W),
- ureg_scalar(layer, TGSI_SWIZZLE_X),
- ureg_scalar(ureg_src(temp0), TGSI_SWIZZLE_X));
- }
-
- /* temp0.w = 0 */
- ureg_MOV(ureg, ureg_writemask(temp0, TGSI_WRITEMASK_W), ureg_imm1u(ureg, 0));
-
- /* out = txf(sampler, temp0.x) */
- ureg_TXF(ureg, out, TGSI_TEXTURE_BUFFER, ureg_src(temp0), sampler);
-
- ureg_release_temporary(ureg, temp0);
-
- ureg_END(ureg);
-
- return ureg_create_shader_and_destroy(ureg, pipe);
-}
-