/* 3DSTATE_CLIP */
if (DIRTY(RASTERIZER) || DIRTY(FS) ||
DIRTY(VIEWPORT) || DIRTY(FRAMEBUFFER)) {
- const struct pipe_viewport_state *vp = &ilo->viewport.states[0];
- bool enable_guardband;
- float x1, x2, y1, y2;
+ bool enable_guardband = true;
+ unsigned i;
/*
* We do not do 2D clipping yet. Guard band test should only be enabled
* when the viewport is larger than the framebuffer.
*/
- x1 = fabs(vp->scale[0]) * -1.0f + vp->translate[0];
- x2 = fabs(vp->scale[0]) * 1.0f + vp->translate[0];
- y1 = fabs(vp->scale[1]) * -1.0f + vp->translate[1];
- y2 = fabs(vp->scale[1]) * 1.0f + vp->translate[1];
- enable_guardband =
- (x1 <= 0.0f && x2 >= (float) ilo->fb.state.width &&
- y1 <= 0.0f && y2 >= (float) ilo->fb.state.height);
+ for (i = 0; i < ilo->viewport.count; i++) {
+ const struct ilo_viewport_cso *vp = &ilo->viewport.cso[i];
+
+ if (vp->min_x > 0.0f || vp->max_x < ilo->fb.state.width ||
+ vp->min_y > 0.0f || vp->max_y < ilo->fb.state.height) {
+ enable_guardband = false;
+ break;
+ }
+ }
p->gen6_3DSTATE_CLIP(p->dev,
&ilo->rasterizer->state,
/* SF_CLIP_VIEWPORT and CC_VIEWPORT */
if (p->dev->gen >= ILO_GEN(7) && DIRTY(VIEWPORT)) {
p->state.SF_CLIP_VIEWPORT = p->gen7_SF_CLIP_VIEWPORT(p->dev,
- ilo->viewport.states, ilo->viewport.count, p->cp);
+ ilo->viewport.cso, ilo->viewport.count, p->cp);
p->state.CC_VIEWPORT = p->gen6_CC_VIEWPORT(p->dev,
- ilo->viewport.states, ilo->viewport.count, p->cp);
+ ilo->viewport.cso, ilo->viewport.count, p->cp);
session->viewport_state_changed = true;
}
/* SF_VIEWPORT, CLIP_VIEWPORT, and CC_VIEWPORT */
else if (DIRTY(VIEWPORT)) {
p->state.CLIP_VIEWPORT = p->gen6_CLIP_VIEWPORT(p->dev,
- ilo->viewport.states, ilo->viewport.count, p->cp);
+ ilo->viewport.cso, ilo->viewport.count, p->cp);
p->state.SF_VIEWPORT = p->gen6_SF_VIEWPORT(p->dev,
- ilo->viewport.states, ilo->viewport.count, p->cp);
+ ilo->viewport.cso, ilo->viewport.count, p->cp);
p->state.CC_VIEWPORT = p->gen6_CC_VIEWPORT(p->dev,
- ilo->viewport.states, ilo->viewport.count, p->cp);
+ ilo->viewport.cso, ilo->viewport.count, p->cp);
session->viewport_state_changed = true;
}
return state_offset;
}
-void
-ilo_gpe_gen6_fill_SF_VIEWPORT(const struct ilo_dev_info *dev,
- const struct pipe_viewport_state *viewports,
- int num_viewports,
- uint32_t *dw, int num_dwords)
-{
- int i;
-
- ILO_GPE_VALID_GEN(dev, 6, 7);
- assert(num_dwords == 8 * num_viewports);
-
- for (i = 0; i < num_viewports; i++) {
- const struct pipe_viewport_state *vp = &viewports[i];
-
- dw[0] = fui(vp->scale[0]);
- dw[1] = fui(vp->scale[1]);
- dw[2] = fui(vp->scale[2]);
- dw[3] = fui(vp->translate[0]);
- dw[4] = fui(vp->translate[1]);
- dw[5] = fui(vp->translate[2]);
-
- /* padding */
- dw[6] = 0;
- dw[7] = 0;
-
- dw += 8;
- }
-}
-
-void
-ilo_gpe_gen6_fill_CLIP_VIEWPORT(const struct ilo_dev_info *dev,
- const struct pipe_viewport_state *viewports,
- int num_viewports,
- uint32_t *dw, int num_dwords)
+static void
+viewport_get_guardband(const struct ilo_dev_info *dev,
+ int center_x, int center_y,
+ int *min_gbx, int *max_gbx,
+ int *min_gby, int *max_gby)
{
- int i;
-
- ILO_GPE_VALID_GEN(dev, 6, 7);
- assert(num_dwords == 4 * num_viewports);
-
/*
- * CLIP_VIEWPORT specifies the guard band.
+ * From the Sandy Bridge PRM, volume 2 part 1, page 234:
+ *
+ * "Per-Device Guardband Extents
+ *
+ * - Supported X,Y ScreenSpace "Guardband" Extent: [-16K,16K-1]
+ * - Maximum Post-Clamp Delta (X or Y): 16K"
+ *
+ * "In addition, in order to be correctly rendered, objects must have a
+ * screenspace bounding box not exceeding 8K in the X or Y direction.
+ * This additional restriction must also be comprehended by software,
+ * i.e., enforced by use of clipping."
+ *
+ * From the Ivy Bridge PRM, volume 2 part 1, page 248:
+ *
+ * "Per-Device Guardband Extents
*
- * Clipping an object that is not entirely inside or outside the viewport
- * (that is, trivially accepted or rejected) is expensive. Guard band test
- * allows clipping to be skipped in this stage and let the renderer dicards
- * pixels that are outside the viewport.
+ * - Supported X,Y ScreenSpace "Guardband" Extent: [-32K,32K-1]
+ * - Maximum Post-Clamp Delta (X or Y): N/A"
*
- * The reason that we need CLIP_VIEWPORT is that the renderer has a limit
- * on the object size. We have to clip normally when the object exceeds
- * the limit.
+ * "In addition, in order to be correctly rendered, objects must have a
+ * screenspace bounding box not exceeding 8K in the X or Y direction.
+ * This additional restriction must also be comprehended by software,
+ * i.e., enforced by use of clipping."
+ *
+ * Combined, the bounding box of any object can not exceed 8K in both
+ * width and height.
+ *
+ * Below we set the guardband as a squre of length 8K, centered at where
+ * the viewport is. This makes sure all objects passing the GB test are
+ * valid to the renderer, and those failing the XY clipping have a
+ * better chance of passing the GB test.
*/
-
- for (i = 0; i < num_viewports; i++) {
- const struct pipe_viewport_state *vp = &viewports[i];
- /*
- * From the Sandy Bridge PRM, volume 2 part 1, page 234:
- *
- * "Per-Device Guardband Extents
- *
- * * Supported X,Y ScreenSpace "Guardband" Extent: [-16K,16K-1]
- * * Maximum Post-Clamp Delta (X or Y): 16K"
- *
- * "In addition, in order to be correctly rendered, objects must
- * have a screenspace bounding box not exceeding 8K in the X or Y
- * direction. This additional restriction must also be
- * comprehended by software, i.e., enforced by use of clipping."
- *
- * From the Ivy Bridge PRM, volume 2 part 1, page 248:
- *
- * "Per-Device Guardband Extents
- *
- * * Supported X,Y ScreenSpace "Guardband" Extent: [-32K,32K-1]
- * * Maximum Post-Clamp Delta (X or Y): N/A"
- *
- * "In addition, in order to be correctly rendered, objects must
- * have a screenspace bounding box not exceeding 8K in the X or Y
- * direction. This additional restriction must also be comprehended
- * by software, i.e., enforced by use of clipping."
- *
- * Combined, the bounding box of any object can not exceed 8K in both
- * width and height.
- *
- * Below we set the guardband as a squre of length 8K, centered at where
- * the viewport is. This makes sure all objects passing the GB test are
- * valid to the renderer, and those failing the XY clipping have a
- * better chance of passing the GB test.
- */
- const float xscale = fabs(vp->scale[0]);
- const float yscale = fabs(vp->scale[1]);
- const int max_extent = (dev->gen >= ILO_GEN(7)) ? 32768 : 16384;
- const int half_len = 8192 / 2;
- int center_x = (int) vp->translate[0];
- int center_y = (int) vp->translate[1];
- float xmin, xmax, ymin, ymax;
-
- /* make sure the guardband is within the valid range */
- if (center_x - half_len < -max_extent)
- center_x = -max_extent + half_len;
- else if (center_x + half_len > max_extent)
- center_x = max_extent - half_len;
-
- if (center_y - half_len < -max_extent)
- center_y = -max_extent + half_len;
- else if (center_y + half_len > max_extent)
- center_y = max_extent - half_len;
-
- xmin = (float) (center_x - half_len);
- xmax = (float) (center_x + half_len);
- ymin = (float) (center_y - half_len);
- ymax = (float) (center_y + half_len);
-
- /* screen space to NDC space */
- xmin = (xmin - vp->translate[0]) / xscale;
- xmax = (xmax - vp->translate[0]) / xscale;
- ymin = (ymin - vp->translate[1]) / yscale;
- ymax = (ymax - vp->translate[1]) / yscale;
-
- dw[0] = fui(xmin);
- dw[1] = fui(xmax);
- dw[2] = fui(ymin);
- dw[3] = fui(ymax);
-
- dw += 4;
- }
+ const int max_extent = (dev->gen >= ILO_GEN(7)) ? 32768 : 16384;
+ const int half_len = 8192 / 2;
+
+ /* make sure the guardband is within the valid range */
+ if (center_x - half_len < -max_extent)
+ center_x = -max_extent + half_len;
+ else if (center_x + half_len > max_extent - 1)
+ center_x = max_extent - half_len;
+
+ if (center_y - half_len < -max_extent)
+ center_y = -max_extent + half_len;
+ else if (center_y + half_len > max_extent - 1)
+ center_y = max_extent - half_len;
+
+ *min_gbx = (float) (center_x - half_len);
+ *max_gbx = (float) (center_x + half_len);
+ *min_gby = (float) (center_y - half_len);
+ *max_gby = (float) (center_y + half_len);
}
-static void
-gen6_fill_CC_VIEWPORT(const struct ilo_dev_info *dev,
- const struct pipe_viewport_state *viewports,
- int num_viewports,
- uint32_t *dw, int num_dwords)
+void
+ilo_gpe_set_viewport_cso(const struct ilo_dev_info *dev,
+ const struct pipe_viewport_state *state,
+ struct ilo_viewport_cso *vp)
{
- int i;
+ const float scale_x = fabs(state->scale[0]);
+ const float scale_y = fabs(state->scale[1]);
+ const float scale_z = fabs(state->scale[2]);
+ int min_gbx, max_gbx, min_gby, max_gby;
ILO_GPE_VALID_GEN(dev, 6, 7);
- assert(num_dwords == 2 * num_viewports);
- for (i = 0; i < num_viewports; i++) {
- const struct pipe_viewport_state *vp = &viewports[i];
- const float scale = fabs(vp->scale[2]);
- const float min = vp->translate[2] - scale;
- const float max = vp->translate[2] + scale;
-
- dw[0] = fui(min);
- dw[1] = fui(max);
-
- dw += 2;
- }
+ viewport_get_guardband(dev,
+ (int) state->translate[0],
+ (int) state->translate[1],
+ &min_gbx, &max_gbx, &min_gby, &max_gby);
+
+ /* matrix form */
+ vp->m00 = state->scale[0];
+ vp->m11 = state->scale[1];
+ vp->m22 = state->scale[2];
+ vp->m30 = state->translate[0];
+ vp->m31 = state->translate[1];
+ vp->m32 = state->translate[2];
+
+ /* guardband in NDC space */
+ vp->min_gbx = ((float) min_gbx - state->translate[0]) / scale_x;
+ vp->max_gbx = ((float) max_gbx - state->translate[0]) / scale_x;
+ vp->min_gby = ((float) min_gby - state->translate[1]) / scale_y;
+ vp->max_gby = ((float) max_gby - state->translate[1]) / scale_y;
+
+ /* viewport in screen space */
+ vp->min_x = scale_x * -1.0f + state->translate[0];
+ vp->max_x = scale_x * 1.0f + state->translate[0];
+ vp->min_y = scale_y * -1.0f + state->translate[1];
+ vp->max_y = scale_y * 1.0f + state->translate[1];
+ vp->min_z = scale_z * -1.0f + state->translate[2];
+ vp->max_z = scale_z * 1.0f + state->translate[2];
}
static uint32_t
gen6_emit_SF_VIEWPORT(const struct ilo_dev_info *dev,
- const struct pipe_viewport_state *viewports,
- int num_viewports,
+ const struct ilo_viewport_cso *viewports,
+ unsigned num_viewports,
struct ilo_cp *cp)
{
const int state_align = 32 / 4;
const int state_len = 8 * num_viewports;
uint32_t state_offset, *dw;
+ unsigned i;
ILO_GPE_VALID_GEN(dev, 6, 6);
dw = ilo_cp_steal_ptr(cp, "SF_VIEWPORT",
state_len, state_align, &state_offset);
- ilo_gpe_gen6_fill_SF_VIEWPORT(dev,
- viewports, num_viewports, dw, state_len);
+ for (i = 0; i < num_viewports; i++) {
+ const struct ilo_viewport_cso *vp = &viewports[i];
+
+ dw[0] = fui(vp->m00);
+ dw[1] = fui(vp->m11);
+ dw[2] = fui(vp->m22);
+ dw[3] = fui(vp->m30);
+ dw[4] = fui(vp->m31);
+ dw[5] = fui(vp->m32);
+ dw[6] = 0;
+ dw[7] = 0;
+
+ dw += 8;
+ }
return state_offset;
}
static uint32_t
gen6_emit_CLIP_VIEWPORT(const struct ilo_dev_info *dev,
- const struct pipe_viewport_state *viewports,
- int num_viewports,
+ const struct ilo_viewport_cso *viewports,
+ unsigned num_viewports,
struct ilo_cp *cp)
{
const int state_align = 32 / 4;
const int state_len = 4 * num_viewports;
uint32_t state_offset, *dw;
+ unsigned i;
ILO_GPE_VALID_GEN(dev, 6, 6);
dw = ilo_cp_steal_ptr(cp, "CLIP_VIEWPORT",
state_len, state_align, &state_offset);
- ilo_gpe_gen6_fill_CLIP_VIEWPORT(dev,
- viewports, num_viewports, dw, state_len);
+ for (i = 0; i < num_viewports; i++) {
+ const struct ilo_viewport_cso *vp = &viewports[i];
+
+ dw[0] = fui(vp->min_gbx);
+ dw[1] = fui(vp->max_gbx);
+ dw[2] = fui(vp->min_gby);
+ dw[3] = fui(vp->max_gby);
+
+ dw += 4;
+ }
return state_offset;
}
static uint32_t
gen6_emit_CC_VIEWPORT(const struct ilo_dev_info *dev,
- const struct pipe_viewport_state *viewports,
- int num_viewports,
+ const struct ilo_viewport_cso *viewports,
+ unsigned num_viewports,
struct ilo_cp *cp)
{
const int state_align = 32 / 4;
const int state_len = 2 * num_viewports;
uint32_t state_offset, *dw;
+ unsigned i;
ILO_GPE_VALID_GEN(dev, 6, 7);
dw = ilo_cp_steal_ptr(cp, "CC_VIEWPORT",
state_len, state_align, &state_offset);
- gen6_fill_CC_VIEWPORT(dev, viewports, num_viewports, dw, state_len);
+ for (i = 0; i < num_viewports; i++) {
+ const struct ilo_viewport_cso *vp = &viewports[i];
+
+ dw[0] = fui(vp->min_z);
+ dw[1] = fui(vp->max_z);
+
+ dw += 2;
+ }
return state_offset;
}
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