{
int setup_samples = nr_samples > 1 ? nr_samples :
overrast_samples > 1 ? overrast_samples : 0;
+ /* Required by OpenGL line rasterization.
+ *
+ * TODO: We should also enable perpendicular endcaps for AA lines,
+ * but that requires implementing line stippling in the pixel
+ * shader. SC can only do line stippling with axis-aligned
+ * endcaps.
+ */
+ unsigned sc_line_cntl = S_028BDC_DX10_DIAMOND_TEST_ENA(1);
if (setup_samples > 1) {
/* indexed by log2(nr_samples) */
util_logbase2(util_next_power_of_two(ps_iter_samples));
radeon_set_context_reg_seq(cs, CM_R_028BDC_PA_SC_LINE_CNTL, 2);
- radeon_emit(cs, S_028BDC_LAST_PIXEL(1) |
+ radeon_emit(cs, sc_line_cntl |
S_028BDC_EXPAND_LINE_WIDTH(1)); /* CM_R_028BDC_PA_SC_LINE_CNTL */
radeon_emit(cs, S_028BE0_MSAA_NUM_SAMPLES(log_samples) |
S_028BE0_MAX_SAMPLE_DIST(max_dist[log_samples]) |
}
} else {
radeon_set_context_reg_seq(cs, CM_R_028BDC_PA_SC_LINE_CNTL, 2);
- radeon_emit(cs, S_028BDC_LAST_PIXEL(1)); /* CM_R_028BDC_PA_SC_LINE_CNTL */
+ radeon_emit(cs, sc_line_cntl); /* CM_R_028BDC_PA_SC_LINE_CNTL */
radeon_emit(cs, 0); /* CM_R_028BE0_PA_SC_AA_CONFIG */
radeon_set_context_reg(cs, CM_R_028804_DB_EQAA,