-/* This function sets up:
- * - VAP mapping, which maps VS registers to output semantics and
- * at the same time it indicates which attributes are enabled and should
- * be rasterized.
- * - Stream mapping to VS outputs if TCL is not present. */
-static void r300_init_vs_output_mapping(struct r300_vertex_shader* vs)
-{
- struct r300_shader_semantics* vs_outputs = &vs->outputs;
- struct r300_vap_output_state *vap_out = &vs->vap_out;
- int *stream_loc = vs->stream_loc_notcl;
- int i, gen_count, tabi = 0;
- boolean any_bcolor_used = vs_outputs->bcolor[0] != ATTR_UNUSED ||
- vs_outputs->bcolor[1] != ATTR_UNUSED;
-
- vap_out->vap_vtx_state_cntl = 0x5555; /* XXX this is classic Mesa bonghits */
-
- /* Position. */
- if (vs_outputs->pos != ATTR_UNUSED) {
- vap_out->vap_vsm_vtx_assm |= R300_INPUT_CNTL_POS;
- vap_out->vap_out_vtx_fmt[0] |= R300_VAP_OUTPUT_VTX_FMT_0__POS_PRESENT;
-
- stream_loc[tabi++] = 0;
- } else {
- assert(0);
- }
-
- /* Point size. */
- if (vs_outputs->psize != ATTR_UNUSED) {
- vap_out->vap_out_vtx_fmt[0] |= R300_VAP_OUTPUT_VTX_FMT_0__PT_SIZE_PRESENT;
-
- stream_loc[tabi++] = 1;
- }
-
- /* Colors. */
- for (i = 0; i < ATTR_COLOR_COUNT; i++) {
- if (vs_outputs->color[i] != ATTR_UNUSED || any_bcolor_used ||
- vs_outputs->color[1] != ATTR_UNUSED) {
- vap_out->vap_vsm_vtx_assm |= R300_INPUT_CNTL_COLOR;
- vap_out->vap_out_vtx_fmt[0] |= R300_VAP_OUTPUT_VTX_FMT_0__COLOR_0_PRESENT << i;
-
- stream_loc[tabi++] = 2 + i;
- }
- }
-
- /* Back-face colors. */
- if (any_bcolor_used) {
- for (i = 0; i < ATTR_COLOR_COUNT; i++) {
- vap_out->vap_vsm_vtx_assm |= R300_INPUT_CNTL_COLOR;
- vap_out->vap_out_vtx_fmt[0] |= R300_VAP_OUTPUT_VTX_FMT_0__COLOR_0_PRESENT << (2+i);
-
- stream_loc[tabi++] = 4 + i;
- }
- }
-
- /* Texture coordinates. */
- gen_count = 0;
- for (i = 0; i < ATTR_GENERIC_COUNT; i++) {
- if (vs_outputs->generic[i] != ATTR_UNUSED) {
- vap_out->vap_vsm_vtx_assm |= (R300_INPUT_CNTL_TC0 << gen_count);
- vap_out->vap_out_vtx_fmt[1] |= (4 << (3 * gen_count));
-
- assert(tabi < 16);
- stream_loc[tabi++] = 6 + gen_count;
- gen_count++;
- }
- }
-
- /* Fog coordinates. */
- if (vs_outputs->fog != ATTR_UNUSED) {
- vap_out->vap_vsm_vtx_assm |= (R300_INPUT_CNTL_TC0 << gen_count);
- vap_out->vap_out_vtx_fmt[1] |= (4 << (3 * gen_count));
-
- assert(tabi < 16);
- stream_loc[tabi++] = 6 + gen_count;
- gen_count++;
- }
-
- /* XXX magic */
- assert(gen_count <= 8);
-
- /* WPOS. */
- vs->wpos_tex_output = gen_count;
-
- assert(tabi < 16);
- stream_loc[tabi++] = 6 + gen_count;
-
- for (; tabi < 16;) {
- stream_loc[tabi++] = -1;
- }
-}
-