#include "brw_state.h"
#include "main/blend.h"
#include "main/fbobject.h"
+#include "util/format_srgb.h"
/**
* Helper function for handling mirror image blits.
}
return true;
}
+
+/**
+ * Convert the given color to a bitfield suitable for ORing into DWORD 7 of
+ * SURFACE_STATE (DWORD 12-15 on SKL+).
+ *
+ * Returned boolean tells if the given color differs from the stored.
+ */
+bool
+brw_meta_set_fast_clear_color(struct brw_context *brw,
+ struct intel_mipmap_tree *mt,
+ const union gl_color_union *color)
+{
+ union gl_color_union override_color = *color;
+
+ /* The sampler doesn't look at the format of the surface when the fast
+ * clear color is used so we need to implement luminance, intensity and
+ * missing components manually.
+ */
+ switch (_mesa_get_format_base_format(mt->format)) {
+ case GL_INTENSITY:
+ override_color.ui[3] = override_color.ui[0];
+ /* flow through */
+ case GL_LUMINANCE:
+ case GL_LUMINANCE_ALPHA:
+ override_color.ui[1] = override_color.ui[0];
+ override_color.ui[2] = override_color.ui[0];
+ break;
+ default:
+ for (int i = 0; i < 3; i++) {
+ if (!_mesa_format_has_color_component(mt->format, i))
+ override_color.ui[i] = 0;
+ }
+ break;
+ }
+
+ if (!_mesa_format_has_color_component(mt->format, 3)) {
+ if (_mesa_is_format_integer_color(mt->format))
+ override_color.ui[3] = 1;
+ else
+ override_color.f[3] = 1.0f;
+ }
+
+ /* Handle linear→SRGB conversion */
+ if (brw->ctx.Color.sRGBEnabled &&
+ _mesa_get_srgb_format_linear(mt->format) != mt->format) {
+ for (int i = 0; i < 3; i++) {
+ override_color.f[i] =
+ util_format_linear_to_srgb_float(override_color.f[i]);
+ }
+ }
+
+ bool updated;
+ if (brw->gen >= 9) {
+ updated = memcmp(&mt->gen9_fast_clear_color, &override_color,
+ sizeof(mt->gen9_fast_clear_color));
+ mt->gen9_fast_clear_color = override_color;
+ } else {
+ const uint32_t old_color_value = mt->fast_clear_color_value;
+
+ mt->fast_clear_color_value = 0;
+ for (int i = 0; i < 4; i++) {
+ /* Testing for non-0 works for integer and float colors */
+ if (override_color.f[i] != 0.0f) {
+ mt->fast_clear_color_value |=
+ 1 << (GEN7_SURFACE_CLEAR_COLOR_SHIFT + (3 - i));
+ }
+ }
+
+ updated = (old_color_value != mt->fast_clear_color_value);
+ }
+
+ return updated;
+}
+
+void
+brw_get_fast_clear_rect(const struct brw_context *brw,
+ const struct gl_framebuffer *fb,
+ const struct intel_mipmap_tree* mt,
+ unsigned *x0, unsigned *y0,
+ unsigned *x1, unsigned *y1)
+{
+ unsigned int x_align, y_align;
+ unsigned int x_scaledown, y_scaledown;
+
+ /* Only single sampled surfaces need to (and actually can) be resolved. */
+ if (mt->msaa_layout == INTEL_MSAA_LAYOUT_NONE ||
+ intel_miptree_is_lossless_compressed(brw, mt)) {
+ /* From the Ivy Bridge PRM, Vol2 Part1 11.7 "MCS Buffer for Render
+ * Target(s)", beneath the "Fast Color Clear" bullet (p327):
+ *
+ * Clear pass must have a clear rectangle that must follow
+ * alignment rules in terms of pixels and lines as shown in the
+ * table below. Further, the clear-rectangle height and width
+ * must be multiple of the following dimensions. If the height
+ * and width of the render target being cleared do not meet these
+ * requirements, an MCS buffer can be created such that it
+ * follows the requirement and covers the RT.
+ *
+ * The alignment size in the table that follows is related to the
+ * alignment size returned by intel_get_non_msrt_mcs_alignment(), but
+ * with X alignment multiplied by 16 and Y alignment multiplied by 32.
+ */
+ intel_get_non_msrt_mcs_alignment(mt, &x_align, &y_align);
+ x_align *= 16;
+
+ /* SKL+ line alignment requirement for Y-tiled are half those of the prior
+ * generations.
+ */
+ if (brw->gen >= 9)
+ y_align *= 16;
+ else
+ y_align *= 32;
+
+ /* From the Ivy Bridge PRM, Vol2 Part1 11.7 "MCS Buffer for Render
+ * Target(s)", beneath the "Fast Color Clear" bullet (p327):
+ *
+ * In order to optimize the performance MCS buffer (when bound to
+ * 1X RT) clear similarly to MCS buffer clear for MSRT case,
+ * clear rect is required to be scaled by the following factors
+ * in the horizontal and vertical directions:
+ *
+ * The X and Y scale down factors in the table that follows are each
+ * equal to half the alignment value computed above.
+ */
+ x_scaledown = x_align / 2;
+ y_scaledown = y_align / 2;
+
+ /* From BSpec: 3D-Media-GPGPU Engine > 3D Pipeline > Pixel > Pixel
+ * Backend > MCS Buffer for Render Target(s) [DevIVB+] > Table "Color
+ * Clear of Non-MultiSampled Render Target Restrictions":
+ *
+ * Clear rectangle must be aligned to two times the number of
+ * pixels in the table shown below due to 16x16 hashing across the
+ * slice.
+ */
+ x_align *= 2;
+ y_align *= 2;
+ } else {
+ /* From the Ivy Bridge PRM, Vol2 Part1 11.7 "MCS Buffer for Render
+ * Target(s)", beneath the "MSAA Compression" bullet (p326):
+ *
+ * Clear pass for this case requires that scaled down primitive
+ * is sent down with upper left co-ordinate to coincide with
+ * actual rectangle being cleared. For MSAA, clear rectangle’s
+ * height and width need to as show in the following table in
+ * terms of (width,height) of the RT.
+ *
+ * MSAA Width of Clear Rect Height of Clear Rect
+ * 2X Ceil(1/8*width) Ceil(1/2*height)
+ * 4X Ceil(1/8*width) Ceil(1/2*height)
+ * 8X Ceil(1/2*width) Ceil(1/2*height)
+ * 16X width Ceil(1/2*height)
+ *
+ * The text "with upper left co-ordinate to coincide with actual
+ * rectangle being cleared" is a little confusing--it seems to imply
+ * that to clear a rectangle from (x,y) to (x+w,y+h), one needs to
+ * feed the pipeline using the rectangle (x,y) to
+ * (x+Ceil(w/N),y+Ceil(h/2)), where N is either 2 or 8 depending on
+ * the number of samples. Experiments indicate that this is not
+ * quite correct; actually, what the hardware appears to do is to
+ * align whatever rectangle is sent down the pipeline to the nearest
+ * multiple of 2x2 blocks, and then scale it up by a factor of N
+ * horizontally and 2 vertically. So the resulting alignment is 4
+ * vertically and either 4 or 16 horizontally, and the scaledown
+ * factor is 2 vertically and either 2 or 8 horizontally.
+ */
+ switch (mt->num_samples) {
+ case 2:
+ case 4:
+ x_scaledown = 8;
+ break;
+ case 8:
+ x_scaledown = 2;
+ break;
+ case 16:
+ x_scaledown = 1;
+ break;
+ default:
+ unreachable("Unexpected sample count for fast clear");
+ }
+ y_scaledown = 2;
+ x_align = x_scaledown * 2;
+ y_align = y_scaledown * 2;
+ }
+
+ *x0 = fb->_Xmin;
+ *x1 = fb->_Xmax;
+ if (fb->Name != 0) {
+ *y0 = fb->_Ymin;
+ *y1 = fb->_Ymax;
+ } else {
+ *y0 = fb->Height - fb->_Ymax;
+ *y1 = fb->Height - fb->_Ymin;
+ }
+
+ *x0 = ROUND_DOWN_TO(*x0, x_align) / x_scaledown;
+ *y0 = ROUND_DOWN_TO(*y0, y_align) / y_scaledown;
+ *x1 = ALIGN(*x1, x_align) / x_scaledown;
+ *y1 = ALIGN(*y1, y_align) / y_scaledown;
+}
+
+void
+brw_meta_get_buffer_rect(const struct gl_framebuffer *fb,
+ unsigned *x0, unsigned *y0,
+ unsigned *x1, unsigned *y1)
+{
+ *x0 = fb->_Xmin;
+ *x1 = fb->_Xmax;
+ if (fb->Name != 0) {
+ *y0 = fb->_Ymin;
+ *y1 = fb->_Ymax;
+ } else {
+ *y0 = fb->Height - fb->_Ymax;
+ *y1 = fb->Height - fb->_Ymin;
+ }
+}
+
+void
+brw_get_resolve_rect(const struct brw_context *brw,
+ const struct intel_mipmap_tree *mt,
+ unsigned *x0, unsigned *y0,
+ unsigned *x1, unsigned *y1)
+{
+ unsigned x_align, y_align;
+ unsigned x_scaledown, y_scaledown;
+
+ /* From the Ivy Bridge PRM, Vol2 Part1 11.9 "Render Target Resolve":
+ *
+ * A rectangle primitive must be scaled down by the following factors
+ * with respect to render target being resolved.
+ *
+ * The scaledown factors in the table that follows are related to the
+ * alignment size returned by intel_get_non_msrt_mcs_alignment() by a
+ * multiplier. For IVB and HSW, we divide by two, for BDW we multiply
+ * by 8 and 16. Similar to the fast clear, SKL eases the BDW vertical scaling
+ * by a factor of 2.
+ */
+
+ intel_get_non_msrt_mcs_alignment(mt, &x_align, &y_align);
+ if (brw->gen >= 9) {
+ x_scaledown = x_align * 8;
+ y_scaledown = y_align * 8;
+ } else if (brw->gen >= 8) {
+ x_scaledown = x_align * 8;
+ y_scaledown = y_align * 16;
+ } else {
+ x_scaledown = x_align / 2;
+ y_scaledown = y_align / 2;
+ }
+ *x0 = *y0 = 0;
+ *x1 = ALIGN(mt->logical_width0, x_scaledown) / x_scaledown;
+ *y1 = ALIGN(mt->logical_height0, y_scaledown) / y_scaledown;
+}
projects / mesa.git / blobdiff