-static INLINE int num_vertices_for_prim(int prim)
-{
- switch(prim) {
- case PIPE_PRIM_POINTS:
- return 1;
- case PIPE_PRIM_LINES:
- return 2;
- case PIPE_PRIM_LINE_LOOP:
- return 2;
- case PIPE_PRIM_LINE_STRIP:
- return 2;
- case PIPE_PRIM_TRIANGLES:
- return 3;
- case PIPE_PRIM_TRIANGLE_STRIP:
- return 3;
- case PIPE_PRIM_TRIANGLE_FAN:
- return 3;
- case PIPE_PRIM_LINES_ADJACENCY:
- case PIPE_PRIM_LINE_STRIP_ADJACENCY:
- return 4;
- case PIPE_PRIM_TRIANGLES_ADJACENCY:
- case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY:
- return 6;
- default:
- assert(!"Bad geometry shader input");
- return 0;
- }
-}
-
-static void draw_fetch_geometry_input(struct draw_geometry_shader *shader,
- int start_primitive,
- int num_primitives,
- const float (*input_ptr)[4],
- unsigned input_vertex_stride,
- unsigned inputs_from_vs)
-{
- struct tgsi_exec_machine *machine = shader->machine;
- unsigned slot, vs_slot, k, j;
- unsigned num_vertices = num_vertices_for_prim(shader->input_primitive);
- int idx = 0;
-
- for (slot = 0, vs_slot = 0; slot < shader->info.num_inputs; slot++) {
- /*debug_printf("Slot = %d (semantic = %d)\n", slot,
- shader->info.input_semantic_name[slot]);*/
- if (shader->info.input_semantic_name[slot] ==
- TGSI_SEMANTIC_VERTICES) {
- for (j = 0; j < num_primitives; ++j) {
- machine->Inputs[idx].xyzw[0].f[j] = (float)num_vertices;
- machine->Inputs[idx].xyzw[1].f[j] = (float)num_vertices;
- machine->Inputs[idx].xyzw[2].f[j] = (float)num_vertices;
- machine->Inputs[idx].xyzw[3].f[j] = (float)num_vertices;
- }
- ++idx;
- } else {
- for (j = 0; j < num_primitives; ++j) {
- int vidx = idx;
- const float (*prim_ptr)[4];
- /*debug_printf(" %d) Prim (num_verts = %d)\n", start_primitive + j,
- num_vertices);*/
- prim_ptr = (const float (*)[4])(
- (const char *)input_ptr +
- (j * num_vertices * input_vertex_stride));
-
- for (k = 0; k < num_vertices; ++k, ++vidx) {
- const float (*input)[4];
- input = (const float (*)[4])(
- (const char *)prim_ptr + (k * input_vertex_stride));
- vidx = k * TGSI_EXEC_MAX_INPUT_ATTRIBS + slot;
- /*debug_printf("\t%d)(%d) Input vert:\n", vidx, k);*/
-#if 1
- assert(!util_is_inf_or_nan(input[vs_slot][0]));
- assert(!util_is_inf_or_nan(input[vs_slot][1]));
- assert(!util_is_inf_or_nan(input[vs_slot][2]));
- assert(!util_is_inf_or_nan(input[vs_slot][3]));
-#endif
- machine->Inputs[vidx].xyzw[0].f[j] = input[vs_slot][0];
- machine->Inputs[vidx].xyzw[1].f[j] = input[vs_slot][1];
- machine->Inputs[vidx].xyzw[2].f[j] = input[vs_slot][2];
- machine->Inputs[vidx].xyzw[3].f[j] = input[vs_slot][3];
-#if 0
- debug_printf("\t\t%d %f %f %f %f\n", slot,
- machine->Inputs[vidx].xyzw[0].f[j],
- machine->Inputs[vidx].xyzw[1].f[j],
- machine->Inputs[vidx].xyzw[2].f[j],
- machine->Inputs[vidx].xyzw[3].f[j]);
-#endif
- }
- }
- ++vs_slot;
- idx += num_vertices;
- }
- }
-}
-