#include "brw_eu.h"
#include "brw_state.h"
-struct brw_blorp_clear_prog_key
+#define FILE_DEBUG_FLAG DEBUG_BLORP
+
+struct brw_blorp_const_color_prog_key
{
bool use_simd16_replicated_data;
bool pad[3];
};
-class brw_blorp_clear_params : public brw_blorp_params
+/**
+ * Parameters for a blorp operation where the fragment shader outputs a
+ * constant color. This is used for both fast color clears and color
+ * resolves.
+ */
+class brw_blorp_const_color_params : public brw_blorp_params
+{
+public:
+ virtual uint32_t get_wm_prog(struct brw_context *brw,
+ brw_blorp_prog_data **prog_data) const;
+
+ brw_blorp_const_color_prog_key wm_prog_key;
+};
+
+class brw_blorp_clear_params : public brw_blorp_const_color_params
{
public:
brw_blorp_clear_params(struct brw_context *brw,
struct gl_framebuffer *fb,
struct gl_renderbuffer *rb,
- GLubyte *color_mask);
+ GLubyte *color_mask,
+ bool partial_clear,
+ unsigned layer);
+};
- virtual uint32_t get_wm_prog(struct brw_context *brw,
- brw_blorp_prog_data **prog_data) const;
-private:
- brw_blorp_clear_prog_key wm_prog_key;
+/**
+ * Parameters for a blorp operation that performs a "render target resolve".
+ * This is used to resolve pending fast clear pixels before a color buffer is
+ * used for texturing, ReadPixels, or scanout.
+ */
+class brw_blorp_rt_resolve_params : public brw_blorp_const_color_params
+{
+public:
+ brw_blorp_rt_resolve_params(struct brw_context *brw,
+ struct intel_mipmap_tree *mt);
};
-class brw_blorp_clear_program
+
+class brw_blorp_const_color_program
{
public:
- brw_blorp_clear_program(struct brw_context *brw,
- const brw_blorp_clear_prog_key *key);
- ~brw_blorp_clear_program();
+ brw_blorp_const_color_program(struct brw_context *brw,
+ const brw_blorp_const_color_prog_key *key);
+ ~brw_blorp_const_color_program();
const GLuint *compile(struct brw_context *brw, GLuint *program_size);
void *mem_ctx;
struct brw_context *brw;
- const brw_blorp_clear_prog_key *key;
+ const brw_blorp_const_color_prog_key *key;
struct brw_compile func;
/* Thread dispatch header */
GLuint base_mrf;
};
-brw_blorp_clear_program::brw_blorp_clear_program(
+brw_blorp_const_color_program::brw_blorp_const_color_program(
struct brw_context *brw,
- const brw_blorp_clear_prog_key *key)
+ const brw_blorp_const_color_prog_key *key)
: mem_ctx(ralloc_context(NULL)),
brw(brw),
- key(key)
+ key(key),
+ R0(),
+ R1(),
+ clear_rgba(),
+ base_mrf(0)
{
+ prog_data.first_curbe_grf = 0;
+ prog_data.persample_msaa_dispatch = false;
brw_init_compile(brw, &func, mem_ctx);
}
-brw_blorp_clear_program::~brw_blorp_clear_program()
+brw_blorp_const_color_program::~brw_blorp_const_color_program()
{
ralloc_free(mem_ctx);
}
+
+/**
+ * Determine if fast color clear supports the given clear color.
+ *
+ * Fast color clear can only clear to color values of 1.0 or 0.0. At the
+ * moment we only support floating point, unorm, and snorm buffers.
+ */
+static bool
+is_color_fast_clear_compatible(struct brw_context *brw,
+ mesa_format format,
+ const union gl_color_union *color)
+{
+ if (_mesa_is_format_integer_color(format))
+ return false;
+
+ for (int i = 0; i < 4; i++) {
+ if (color->f[i] != 0.0 && color->f[i] != 1.0 &&
+ _mesa_format_has_color_component(format, i)) {
+ return false;
+ }
+ }
+ return true;
+}
+
+
+/**
+ * Convert the given color to a bitfield suitable for ORing into DWORD 7 of
+ * SURFACE_STATE.
+ */
+static uint32_t
+compute_fast_clear_color_bits(const union gl_color_union *color)
+{
+ uint32_t bits = 0;
+ for (int i = 0; i < 4; i++) {
+ if (color->f[i] != 0.0)
+ bits |= 1 << (GEN7_SURFACE_CLEAR_COLOR_SHIFT + (3 - i));
+ }
+ return bits;
+}
+
+
brw_blorp_clear_params::brw_blorp_clear_params(struct brw_context *brw,
struct gl_framebuffer *fb,
struct gl_renderbuffer *rb,
- GLubyte *color_mask)
+ GLubyte *color_mask,
+ bool partial_clear,
+ unsigned layer)
{
- struct intel_context *intel = &brw->intel;
- struct gl_context *ctx = &intel->ctx;
+ struct gl_context *ctx = &brw->ctx;
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
- dst.set(brw, irb->mt, irb->mt_level, irb->mt_layer);
+ dst.set(brw, irb->mt, irb->mt_level, layer, true);
/* Override the surface format according to the context's sRGB rules. */
- gl_format format = _mesa_get_render_format(ctx, irb->mt->format);
+ mesa_format format = _mesa_get_render_format(ctx, irb->mt->format);
dst.brw_surfaceformat = brw->render_target_format[format];
x0 = fb->_Xmin;
* accessing tiled memory. Using this Message Type to access linear
* (untiled) memory is UNDEFINED."
*/
- if (irb->mt->region->tiling == I915_TILING_NONE)
+ if (irb->mt->tiling == I915_TILING_NONE)
wm_prog_key.use_simd16_replicated_data = false;
/* Constant color writes ignore everyting in blend and color calculator
* state. This is not documented.
*/
for (int i = 0; i < 4; i++) {
- if (!color_mask[i]) {
+ if (_mesa_format_has_color_component(irb->mt->format, i) &&
+ !color_mask[i]) {
color_write_disable[i] = true;
wm_prog_key.use_simd16_replicated_data = false;
}
}
+
+ /* If we can do this as a fast color clear, do so.
+ *
+ * Note that the condition "!partial_clear" means we only try to do full
+ * buffer clears using fast color clear logic. This is necessary because
+ * the fast color clear alignment requirements mean that we typically have
+ * to clear a larger rectangle than (x0, y0) to (x1, y1). Restricting fast
+ * color clears to the full-buffer condition guarantees that the extra
+ * memory locations that get written to are outside the image boundary (and
+ * hence irrelevant). Note that the rectangle alignment requirements are
+ * never larger than the size of a tile, so there is no danger of
+ * overflowing beyond the memory belonging to the region.
+ */
+ if (irb->mt->fast_clear_state != INTEL_FAST_CLEAR_STATE_NO_MCS &&
+ !partial_clear && wm_prog_key.use_simd16_replicated_data &&
+ is_color_fast_clear_compatible(brw, format, &ctx->Color.ClearColor)) {
+ memset(push_consts, 0xff, 4*sizeof(float));
+ fast_clear_op = GEN7_FAST_CLEAR_OP_FAST_CLEAR;
+
+ /* Figure out what the clear rectangle needs to be aligned to, and how
+ * much it needs to be scaled down.
+ */
+ unsigned x_align, y_align, x_scaledown, y_scaledown;
+
+ if (irb->mt->msaa_layout == INTEL_MSAA_LAYOUT_NONE) {
+ /* 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(brw, irb->mt, &x_align, &y_align);
+ x_align *= 16;
+ 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
+ * 4X Ceil(1/8*width) Ceil(1/2*height)
+ * 8X Ceil(1/2*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 (irb->mt->num_samples) {
+ case 4:
+ x_scaledown = 8;
+ break;
+ case 8:
+ x_scaledown = 2;
+ break;
+ default:
+ assert(!"Unexpected sample count for fast clear");
+ unreachable();
+ break;
+ }
+ y_scaledown = 2;
+ x_align = x_scaledown * 2;
+ y_align = y_scaledown * 2;
+ }
+
+ /* Do the alignment and scaledown. */
+ 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;
+ }
}
+
+brw_blorp_rt_resolve_params::brw_blorp_rt_resolve_params(
+ struct brw_context *brw,
+ struct intel_mipmap_tree *mt)
+{
+ dst.set(brw, mt, 0 /* level */, 0 /* layer */, true);
+
+ /* 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(), but with
+ * X and Y alignment each divided by 2.
+ */
+ unsigned x_align, y_align;
+ intel_get_non_msrt_mcs_alignment(brw, mt, &x_align, &y_align);
+ unsigned x_scaledown = x_align / 2;
+ unsigned 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;
+
+ fast_clear_op = GEN7_FAST_CLEAR_OP_RESOLVE;
+
+ /* Note: there is no need to initialize push constants because it doesn't
+ * matter what data gets dispatched to the render target. However, we must
+ * ensure that the fragment shader delivers the data using the "replicated
+ * color" message.
+ */
+ use_wm_prog = true;
+ memset(&wm_prog_key, 0, sizeof(wm_prog_key));
+ wm_prog_key.use_simd16_replicated_data = true;
+}
+
+
uint32_t
-brw_blorp_clear_params::get_wm_prog(struct brw_context *brw,
- brw_blorp_prog_data **prog_data) const
+brw_blorp_const_color_params::get_wm_prog(struct brw_context *brw,
+ brw_blorp_prog_data **prog_data)
+ const
{
- uint32_t prog_offset;
- if (!brw_search_cache(&brw->cache, BRW_BLORP_CLEAR_PROG,
+ uint32_t prog_offset = 0;
+ if (!brw_search_cache(&brw->cache, BRW_BLORP_CONST_COLOR_PROG,
&this->wm_prog_key, sizeof(this->wm_prog_key),
&prog_offset, prog_data)) {
- brw_blorp_clear_program prog(brw, &this->wm_prog_key);
+ brw_blorp_const_color_program prog(brw, &this->wm_prog_key);
GLuint program_size;
const GLuint *program = prog.compile(brw, &program_size);
- brw_upload_cache(&brw->cache, BRW_BLORP_CLEAR_PROG,
+ brw_upload_cache(&brw->cache, BRW_BLORP_CONST_COLOR_PROG,
&this->wm_prog_key, sizeof(this->wm_prog_key),
program, program_size,
&prog.prog_data, sizeof(prog.prog_data),
}
void
-brw_blorp_clear_program::alloc_regs()
+brw_blorp_const_color_program::alloc_regs()
{
int reg = 0;
this->R0 = retype(brw_vec8_grf(reg++, 0), BRW_REGISTER_TYPE_UW);
}
const GLuint *
-brw_blorp_clear_program::compile(struct brw_context *brw,
- GLuint *program_size)
+brw_blorp_const_color_program::compile(struct brw_context *brw,
+ GLuint *program_size)
{
/* Set up prog_data */
memset(&prog_data, 0, sizeof(prog_data));
alloc_regs();
- brw_set_compression_control(&func, BRW_COMPRESSION_NONE);
+ brw_set_default_compression_control(&func, BRW_COMPRESSION_NONE);
struct brw_reg mrf_rt_write =
retype(vec16(brw_message_reg(base_mrf)), BRW_REGISTER_TYPE_F);
/* The message payload is a single register with the low 4 floats/ints
* filled with the constant clear color.
*/
- brw_set_mask_control(&func, BRW_MASK_DISABLE);
+ brw_set_default_mask_control(&func, BRW_MASK_DISABLE);
brw_MOV(&func, vec4(brw_message_reg(base_mrf)), clear_rgba);
- brw_set_mask_control(&func, BRW_MASK_ENABLE);
+ brw_set_default_mask_control(&func, BRW_MASK_ENABLE);
msg_type = BRW_DATAPORT_RENDER_TARGET_WRITE_SIMD16_SINGLE_SOURCE_REPLICATED;
mlen = 1;
/* The message payload is pairs of registers for 16 pixels each of r,
* g, b, and a.
*/
- brw_set_compression_control(&func, BRW_COMPRESSION_COMPRESSED);
+ brw_set_default_compression_control(&func, BRW_COMPRESSION_COMPRESSED);
brw_MOV(&func,
brw_message_reg(base_mrf + i * 2),
brw_vec1_grf(clear_rgba.nr, i));
- brw_set_compression_control(&func, BRW_COMPRESSION_NONE);
+ brw_set_default_compression_control(&func, BRW_COMPRESSION_NONE);
}
msg_type = BRW_DATAPORT_RENDER_TARGET_WRITE_SIMD16_SINGLE_SOURCE;
false /* header present */);
if (unlikely(INTEL_DEBUG & DEBUG_BLORP)) {
- printf("Native code for BLORP clear:\n");
- brw_dump_compile(&func, stdout, 0, func.next_insn_offset);
- printf("\n");
+ fprintf(stderr, "Native code for BLORP clear:\n");
+ brw_disassemble(brw, func.store, 0, func.next_insn_offset, stderr);
+ fprintf(stderr, "\n");
}
+
+ brw_compact_instructions(&func, 0, 0, NULL);
return brw_get_program(&func, program_size);
}
-extern "C" {
+
bool
-brw_blorp_clear_color(struct intel_context *intel, struct gl_framebuffer *fb)
+do_single_blorp_clear(struct brw_context *brw, struct gl_framebuffer *fb,
+ struct gl_renderbuffer *rb, unsigned buf,
+ bool partial_clear, unsigned layer)
{
- struct gl_context *ctx = &intel->ctx;
- struct brw_context *brw = brw_context(ctx);
-
- /* The constant color clear code doesn't work for multisampled surfaces, so
- * we need to support falling back to other clear mechanisms.
- * Unfortunately, our clear code is based on a bitmask that doesn't
- * distinguish individual color attachments, so we walk the attachments to
- * see if any require fallback, and fall back for all if any of them need
- * to.
- */
- for (unsigned buf = 0; buf < ctx->DrawBuffer->_NumColorDrawBuffers; buf++) {
- struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[buf];
- struct intel_renderbuffer *irb = intel_renderbuffer(rb);
+ struct gl_context *ctx = &brw->ctx;
+ struct intel_renderbuffer *irb = intel_renderbuffer(rb);
- if (irb && irb->mt->msaa_layout != INTEL_MSAA_LAYOUT_NONE)
- return false;
+ brw_blorp_clear_params params(brw, fb, rb, ctx->Color.ColorMask[buf],
+ partial_clear, layer);
+
+ bool is_fast_clear =
+ (params.fast_clear_op == GEN7_FAST_CLEAR_OP_FAST_CLEAR);
+ if (is_fast_clear) {
+ /* Record the clear color in the miptree so that it will be
+ * programmed in SURFACE_STATE by later rendering and resolve
+ * operations.
+ */
+ uint32_t new_color_value =
+ compute_fast_clear_color_bits(&ctx->Color.ClearColor);
+ if (irb->mt->fast_clear_color_value != new_color_value) {
+ irb->mt->fast_clear_color_value = new_color_value;
+ brw->state.dirty.brw |= BRW_NEW_SURFACES;
+ }
+
+ /* If the buffer is already in INTEL_FAST_CLEAR_STATE_CLEAR, the clear
+ * is redundant and can be skipped.
+ */
+ if (irb->mt->fast_clear_state == INTEL_FAST_CLEAR_STATE_CLEAR)
+ return true;
+
+ /* If the MCS buffer hasn't been allocated yet, we need to allocate
+ * it now.
+ */
+ if (!irb->mt->mcs_mt) {
+ if (!intel_miptree_alloc_non_msrt_mcs(brw, irb->mt)) {
+ /* MCS allocation failed--probably this will only happen in
+ * out-of-memory conditions. But in any case, try to recover
+ * by falling back to a non-blorp clear technique.
+ */
+ return false;
+ }
+ brw->state.dirty.brw |= BRW_NEW_SURFACES;
+ }
}
- for (unsigned buf = 0; buf < ctx->DrawBuffer->_NumColorDrawBuffers; buf++) {
- struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[buf];
+ const char *clear_type;
+ if (is_fast_clear)
+ clear_type = "fast";
+ else if (params.wm_prog_key.use_simd16_replicated_data)
+ clear_type = "replicated";
+ else
+ clear_type = "slow";
+
+ DBG("%s (%s) to mt %p level %d layer %d\n", __FUNCTION__, clear_type,
+ irb->mt, irb->mt_level, irb->mt_layer);
+
+ brw_blorp_exec(brw, ¶ms);
+
+ if (is_fast_clear) {
+ /* Now that the fast clear has occurred, put the buffer in
+ * INTEL_FAST_CLEAR_STATE_CLEAR so that we won't waste time doing
+ * redundant clears.
+ */
+ irb->mt->fast_clear_state = INTEL_FAST_CLEAR_STATE_CLEAR;
+ }
+
+ return true;
+}
+
+
+extern "C" {
+bool
+brw_blorp_clear_color(struct brw_context *brw, struct gl_framebuffer *fb,
+ GLbitfield mask, bool partial_clear)
+{
+ for (unsigned buf = 0; buf < fb->_NumColorDrawBuffers; buf++) {
+ struct gl_renderbuffer *rb = fb->_ColorDrawBuffers[buf];
+ struct intel_renderbuffer *irb = intel_renderbuffer(rb);
+
+ /* Only clear the buffers present in the provided mask */
+ if (((1 << fb->_ColorDrawBufferIndexes[buf]) & mask) == 0)
+ continue;
/* If this is an ES2 context or GL_ARB_ES2_compatibility is supported,
* the framebuffer can be complete with some attachments missing. In
if (rb == NULL)
continue;
- brw_blorp_clear_params params(brw, fb, rb, ctx->Color.ColorMask[buf]);
- brw_blorp_exec(intel, ¶ms);
+ if (fb->MaxNumLayers > 0) {
+ unsigned layer_multiplier =
+ (irb->mt->msaa_layout == INTEL_MSAA_LAYOUT_UMS ||
+ irb->mt->msaa_layout == INTEL_MSAA_LAYOUT_CMS) ?
+ irb->mt->num_samples : 1;
+ unsigned num_layers = irb->layer_count;
+ for (unsigned layer = 0; layer < num_layers; layer++) {
+ if (!do_single_blorp_clear(brw, fb, rb, buf, partial_clear,
+ irb->mt_layer + layer * layer_multiplier)) {
+ return false;
+ }
+ }
+ } else {
+ unsigned layer = irb->mt_layer;
+ if (!do_single_blorp_clear(brw, fb, rb, buf, partial_clear, layer))
+ return false;
+ }
+
+ irb->need_downsample = true;
}
return true;
}
+void
+brw_blorp_resolve_color(struct brw_context *brw, struct intel_mipmap_tree *mt)
+{
+ DBG("%s to mt %p\n", __FUNCTION__, mt);
+
+ brw_blorp_rt_resolve_params params(brw, mt);
+ brw_blorp_exec(brw, ¶ms);
+ mt->fast_clear_state = INTEL_FAST_CLEAR_STATE_RESOLVED;
+}
+
} /* extern "C" */
projects / mesa.git / blobdiff