diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/drivers/r300/r300_context.h | 3 | ||||
| -rw-r--r-- | src/gallium/drivers/r300/r300_render.c | 23 | ||||
| -rw-r--r-- | src/gallium/drivers/r300/r300_state.c | 3 |
3 files changed, 29 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_context.h b/src/gallium/drivers/r300/r300_context.h index 23ea32c57ed..0be190392a5 100644 --- a/src/gallium/drivers/r300/r300_context.h +++ b/src/gallium/drivers/r300/r300_context.h @@ -101,6 +101,9 @@ struct r300_sampler_state { struct r300_scissor_regs { uint32_t top_left; /* R300_SC_SCISSORS_TL: 0x43e0 */ uint32_t bottom_right; /* R300_SC_SCISSORS_BR: 0x43e4 */ + + /* Whether everything is culled by scissoring. */ + boolean empty_area; }; struct r300_scissor_state { diff --git a/src/gallium/drivers/r300/r300_render.c b/src/gallium/drivers/r300/r300_render.c index 4c5fb405c6a..35b335df6a1 100644 --- a/src/gallium/drivers/r300/r300_render.c +++ b/src/gallium/drivers/r300/r300_render.c @@ -70,6 +70,12 @@ uint32_t r300_translate_primitive(unsigned prim) } } +static boolean r300_nothing_to_draw(struct r300_context *r300) +{ + return r300->rs_state->rs.scissor && + r300->scissor_state->scissor.empty_area; +} + static void r300_emit_draw_arrays(struct r300_context *r300, unsigned mode, unsigned count) @@ -173,10 +179,15 @@ boolean r300_draw_range_elements(struct pipe_context* pipe, return FALSE; } + if (count > 65535) { return FALSE; } + if (r300_nothing_to_draw(r300)) { + return TRUE; + } + r300_update_derived_state(r300); if (!r300_setup_vertex_buffers(r300)) { @@ -218,6 +229,10 @@ boolean r300_draw_arrays(struct pipe_context* pipe, unsigned mode, return FALSE; } + if (r300_nothing_to_draw(r300)) { + return TRUE; + } + r300_update_derived_state(r300); if (!r300_setup_vertex_buffers(r300)) { @@ -251,6 +266,10 @@ boolean r300_swtcl_draw_arrays(struct pipe_context* pipe, return FALSE; } + if (r300_nothing_to_draw(r300)) { + return TRUE; + } + for (i = 0; i < r300->vertex_buffer_count; i++) { void* buf = pipe_buffer_map(pipe->screen, r300->vertex_buffer[i].buffer, @@ -292,6 +311,10 @@ boolean r300_swtcl_draw_range_elements(struct pipe_context* pipe, return FALSE; } + if (r300_nothing_to_draw(r300)) { + return TRUE; + } + for (i = 0; i < r300->vertex_buffer_count; i++) { void* buf = pipe_buffer_map(pipe->screen, r300->vertex_buffer[i].buffer, diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c index d3233557cea..8ef0b3b268a 100644 --- a/src/gallium/drivers/r300/r300_state.c +++ b/src/gallium/drivers/r300/r300_state.c @@ -309,6 +309,9 @@ static void r300_set_scissor_regs(const struct pipe_scissor_state* state, (((state->maxx - 1) + 1440) << R300_SCISSORS_X_SHIFT) | (((state->maxy - 1) + 1440) << R300_SCISSORS_Y_SHIFT); } + + scissor->empty_area = state->minx >= state->maxx || + state->miny >= state->maxy; } static void |