-
-static void FUNC( struct draw_geometry_shader *shader,
- const struct draw_prim_info *input_prims,
- const struct draw_vertex_info *input_verts,
- struct draw_prim_info *output_prims,
- struct draw_vertex_info *output_verts)
-{
- struct draw_context *draw = shader->draw;
-
- boolean flatfirst = (draw->rasterizer->flatshade &&
- draw->rasterizer->flatshade_first);
- unsigned i, j;
- unsigned count = input_prims->count;
- LOCAL_VARS
-
- if (0) debug_printf("%s %d\n", __FUNCTION__, count);
-
- debug_assert(input_prims->primitive_count == 1);
-
- switch (input_prims->prim) {
- case PIPE_PRIM_POINTS:
- for (i = 0; i < count; i++) {
- POINT( shader, i + 0 );
- }
- break;
-
- case PIPE_PRIM_LINES:
- for (i = 0; i+1 < count; i += 2) {
- LINE( shader , i + 0 , i + 1 );
- }
- break;
-
- case PIPE_PRIM_LINE_LOOP:
- if (count >= 2) {
-
- for (i = 1; i < count; i++) {
- LINE( shader, i - 1, i );
- }
-
- LINE( shader, i - 1, 0 );
- }
- break;
-
- case PIPE_PRIM_LINE_STRIP:
- for (i = 1; i < count; i++) {
- LINE( shader, i - 1, i );
- }
- break;
-
- case PIPE_PRIM_TRIANGLES:
- for (i = 0; i+2 < count; i += 3) {
- TRIANGLE( shader, i + 0, i + 1, i + 2 );
- }
- break;
-
- case PIPE_PRIM_TRIANGLE_STRIP:
- if (flatfirst) {
- for (i = 0; i+2 < count; i++) {
- TRIANGLE( shader,
- i + 0,
- i + 1 + (i&1),
- i + 2 - (i&1) );
- }
- }
- else {
- for (i = 0; i+2 < count; i++) {
- TRIANGLE( shader,
- i + 0 + (i&1),
- i + 1 - (i&1),
- i + 2 );
- }
- }
- break;
-
- case PIPE_PRIM_TRIANGLE_FAN:
- if (count >= 3) {
- if (flatfirst) {
- for (i = 0; i+2 < count; i++) {
- TRIANGLE( shader,
- i + 1,
- i + 2,
- 0 );
- }
- }
- else {
- for (i = 0; i+2 < count; i++) {
- TRIANGLE( shader,
- 0,
- i + 1,
- i + 2 );
- }
- }
- }
- break;
-
- case PIPE_PRIM_POLYGON:
- {
- for (i = 0; i+2 < count; i++) {
-
- if (flatfirst) {
- TRIANGLE( shader, 0, i + 1, i + 2 );
- }
- else {
- TRIANGLE( shader, i + 1, i + 2, 0 );
- }
- }
- }
- break;
-
- case PIPE_PRIM_LINES_ADJACENCY:
- for (i = 0; i+3 < count; i += 4) {
- LINE_ADJ( shader , i + 0 , i + 1, i + 2, i + 3 );
- }
- break;
- case PIPE_PRIM_LINE_STRIP_ADJACENCY:
- for (i = 1; i + 2 < count; i++) {
- LINE_ADJ( shader, i - 1, i, i + 1, i + 2 );
- }
- break;
-
- case PIPE_PRIM_TRIANGLES_ADJACENCY:
- for (i = 0; i+5 < count; i += 5) {
- TRI_ADJ( shader, i + 0, i + 1, i + 2,
- i + 3, i + 4, i + 5);
- }
- break;
- case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY:
- for (i = 0, j = 0; i+5 < count; i += 2, ++j) {
- TRI_ADJ( shader,
- i + 0,
- i + 1 + 2*(j&1),
- i + 2 + 2*(j&1),
- i + 3 - 2*(j&1),
- i + 4 - 2*(j&1),
- i + 5);
- }
- break;
-
- default:
- debug_assert(!"Unsupported primitive in geometry shader");
- break;
- }
-}
-
-
-#undef TRIANGLE
-#undef TRI_ADJ
-#undef POINT
-#undef LINE
-#undef LINE_ADJ
-#undef FUNC
-#undef LOCAL_VARS
+#define FUNC_VARS struct draw_geometry_shader *gs, \
+ const struct draw_prim_info *input_prims, \
+ const struct draw_vertex_info *input_verts, \
+ struct draw_prim_info *output_prims, \
+ struct draw_vertex_info *output_verts
+
+#define FUNC_ENTER \
+ /* declare more local vars */ \
+ const unsigned prim = input_prims->prim; \
+ const unsigned prim_flags = input_prims->flags; \
+ const unsigned count = input_prims->count; \
+ const boolean quads_flatshade_last = FALSE; \
+ const boolean last_vertex_last = !gs->draw->rasterizer->flatshade_first; \
+ do { \
+ switch (prim) { \
+ case PIPE_PRIM_QUADS: \
+ case PIPE_PRIM_QUAD_STRIP: \
+ case PIPE_PRIM_POLYGON: \
+ debug_assert(!"unexpected primitive type in GS"); \
+ return; \
+ default: \
+ break; \
+ } \
+ } while (0)
+
+#define POINT(i0) gs_point(gs,i0)
+#define LINE(flags,i0,i1) gs_line(gs,i0,i1)
+#define TRIANGLE(flags,i0,i1,i2) gs_tri(gs,i0,i1,i2)
+#define LINE_ADJ(flags,i0,i1,i2,i3) gs_line_adj(gs,i0,i1,i2,i3)
+#define TRIANGLE_ADJ(flags,i0,i1,i2,i3,i4,i5) gs_tri_adj(gs,i0,i1,i2,i3,i4,i5)
+
+#include "draw_decompose_tmp.h"
projects / mesa.git / blobdiff