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Diffstat (limited to 'src/gallium/auxiliary/hud/hud_context.c')
-rw-r--r--src/gallium/auxiliary/hud/hud_context.c80
1 files changed, 77 insertions, 3 deletions
diff --git a/src/gallium/auxiliary/hud/hud_context.c b/src/gallium/auxiliary/hud/hud_context.c
index ac971d8665d..3453bdae3b0 100644
--- a/src/gallium/auxiliary/hud/hud_context.c
+++ b/src/gallium/auxiliary/hud/hud_context.c
@@ -344,7 +344,7 @@ hud_pane_accumulate_vertices(struct hud_context *hud,
float *line_verts = hud->whitelines.vertices + hud->whitelines.num_vertices*2;
unsigned i, num = 0;
char str[32];
- const unsigned last_line = 5;
+ const unsigned last_line = pane->last_line;
/* draw background */
hud_draw_background_quad(hud,
@@ -544,7 +544,7 @@ hud_draw(struct hud_context *hud, struct pipe_resource *tex)
cso_set_constant_buffer(cso, PIPE_SHADER_VERTEX, 0, &hud->constbuf);
/* prepare vertex buffers */
- hud_alloc_vertices(hud, &hud->bg, 4 * 128, 2 * sizeof(float));
+ hud_alloc_vertices(hud, &hud->bg, 4 * 256, 2 * sizeof(float));
hud_alloc_vertices(hud, &hud->whitelines, 4 * 256, 2 * sizeof(float));
hud_alloc_vertices(hud, &hud->text, 4 * 1024, 4 * sizeof(float));
@@ -627,6 +627,13 @@ hud_draw(struct hud_context *hud, struct pipe_resource *tex)
pipe_surface_reference(&surf, NULL);
}
+static void
+fixup_bytes(enum pipe_driver_query_type type, int position, uint64_t *exp10)
+{
+ if (type == PIPE_DRIVER_QUERY_TYPE_BYTES && position % 3 == 0)
+ *exp10 = (*exp10 / 1000) * 1024;
+}
+
/**
* Set the maximum value for the Y axis of the graph.
* This scales the graph accordingly.
@@ -634,7 +641,74 @@ hud_draw(struct hud_context *hud, struct pipe_resource *tex)
void
hud_pane_set_max_value(struct hud_pane *pane, uint64_t value)
{
- pane->max_value = value;
+ double leftmost_digit;
+ uint64_t exp10;
+ int i;
+
+ /* The following code determines the max_value in the graph as well as
+ * how many describing lines are drawn. The max_value is rounded up,
+ * so that all drawn numbers are rounded for readability.
+ * We want to print multiples of a simple number instead of multiples of
+ * hard-to-read numbers like 1.753.
+ */
+
+ /* Find the left-most digit. */
+ exp10 = 1;
+ for (i = 0; value > 9 * exp10; i++) {
+ exp10 *= 10;
+ fixup_bytes(pane->type, i + 1, &exp10);
+ }
+
+ leftmost_digit = DIV_ROUND_UP(value, exp10);
+
+ /* Round 9 to 10. */
+ if (leftmost_digit == 9) {
+ leftmost_digit = 1;
+ exp10 *= 10;
+ fixup_bytes(pane->type, i + 1, &exp10);
+ }
+
+ switch ((unsigned)leftmost_digit) {
+ case 1:
+ pane->last_line = 5; /* lines in +1/5 increments */
+ break;
+ case 2:
+ pane->last_line = 8; /* lines in +1/4 increments. */
+ break;
+ case 3:
+ case 4:
+ pane->last_line = leftmost_digit * 2; /* lines in +1/2 increments */
+ break;
+ case 5:
+ case 6:
+ case 7:
+ case 8:
+ pane->last_line = leftmost_digit; /* lines in +1 increments */
+ break;
+ default:
+ assert(0);
+ }
+
+ /* Truncate {3,4} to {2.5, 3.5} if possible. */
+ for (i = 3; i <= 4; i++) {
+ if (leftmost_digit == i && value <= (i - 0.5) * exp10) {
+ leftmost_digit = i - 0.5;
+ pane->last_line = leftmost_digit * 2; /* lines in +1/2 increments. */
+ }
+ }
+
+ /* Truncate 2 to a multiple of 0.2 in (1, 1.6] if possible. */
+ if (leftmost_digit == 2) {
+ for (i = 1; i <= 3; i++) {
+ if (value <= (1 + i*0.2) * exp10) {
+ leftmost_digit = 1 + i*0.2;
+ pane->last_line = 5 + i; /* lines in +1/5 increments. */
+ break;
+ }
+ }
+ }
+
+ pane->max_value = leftmost_digit * exp10;
pane->yscale = -(int)pane->inner_height / (float)pane->max_value;
}