diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_draw.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_draw.c b/src/mesa/drivers/dri/i965/brw_draw.c index 93f27d72cf5..621195d0229 100644 --- a/src/mesa/drivers/dri/i965/brw_draw.c +++ b/src/mesa/drivers/dri/i965/brw_draw.c @@ -379,6 +379,30 @@ static void brw_postdraw_set_buffers_need_resolve(struct brw_context *brw) } } +static int +verts_per_prim(GLenum mode) +{ + switch (mode) { + case GL_POINTS: + return 1; + case GL_LINE_STRIP: + case GL_LINE_LOOP: + case GL_LINES: + return 2; + case GL_TRIANGLE_STRIP: + case GL_TRIANGLE_FAN: + case GL_POLYGON: + case GL_TRIANGLES: + case GL_QUADS: + case GL_QUAD_STRIP: + return 3; + default: + _mesa_problem(NULL, + "unknown prim type in transform feedback primitive count"); + return 0; + } +} + /** * Update internal counters based on the the drawing operation described in * prim. @@ -398,14 +422,11 @@ brw_update_primitive_count(struct brw_context *brw, * able to reload SVBI 0 with the correct value in case we have to start * a new batch buffer. */ - unsigned svbi_postincrement_value = - brw->gs.prog_data->svbi_postincrement_value; + unsigned verts = verts_per_prim(prim->mode); uint32_t space_avail = - (brw->sol.svbi_0_max_index - brw->sol.svbi_0_starting_index) - / svbi_postincrement_value; + (brw->sol.svbi_0_max_index - brw->sol.svbi_0_starting_index) / verts; uint32_t primitives_written = MIN2 (space_avail, count); - brw->sol.svbi_0_starting_index += - svbi_postincrement_value * primitives_written; + brw->sol.svbi_0_starting_index += verts * primitives_written; /* And update the TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN query. */ brw->sol.primitives_written += primitives_written; |