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/*
* Copyright © 2013 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
extern "C" {
#include "main/teximage.h"
#include "main/blend.h"
#include "main/fbobject.h"
#include "main/renderbuffer.h"
}
#include "glsl/ralloc.h"
#include "intel_fbo.h"
#include "brw_blorp.h"
#include "brw_context.h"
#include "brw_eu.h"
#include "brw_state.h"
struct brw_blorp_clear_prog_key
{
bool use_simd16_replicated_data;
bool pad[3];
};
class brw_blorp_clear_params : public brw_blorp_params
{
public:
brw_blorp_clear_params(struct brw_context *brw,
struct gl_framebuffer *fb,
struct gl_renderbuffer *rb,
GLubyte *color_mask);
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;
};
class brw_blorp_clear_program
{
public:
brw_blorp_clear_program(struct brw_context *brw,
const brw_blorp_clear_prog_key *key);
~brw_blorp_clear_program();
const GLuint *compile(struct brw_context *brw, GLuint *program_size);
brw_blorp_prog_data prog_data;
private:
void alloc_regs();
void *mem_ctx;
struct brw_context *brw;
const brw_blorp_clear_prog_key *key;
struct brw_compile func;
/* Thread dispatch header */
struct brw_reg R0;
/* Pixel X/Y coordinates (always in R1). */
struct brw_reg R1;
/* Register with push constants (a single vec4) */
struct brw_reg clear_rgba;
/* MRF used for render target writes */
GLuint base_mrf;
};
brw_blorp_clear_program::brw_blorp_clear_program(
struct brw_context *brw,
const brw_blorp_clear_prog_key *key)
: mem_ctx(ralloc_context(NULL)),
brw(brw),
key(key)
{
brw_init_compile(brw, &func, mem_ctx);
}
brw_blorp_clear_program::~brw_blorp_clear_program()
{
ralloc_free(mem_ctx);
}
brw_blorp_clear_params::brw_blorp_clear_params(struct brw_context *brw,
struct gl_framebuffer *fb,
struct gl_renderbuffer *rb,
GLubyte *color_mask)
{
struct intel_context *intel = &brw->intel;
struct gl_context *ctx = &intel->ctx;
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
dst.set(brw, irb->mt, irb->mt_level, irb->mt_layer);
/* Override the surface format according to the context's sRGB rules. */
gl_format format = _mesa_get_render_format(ctx, irb->mt->format);
dst.brw_surfaceformat = brw->render_target_format[format];
x0 = fb->_Xmin;
x1 = fb->_Xmax;
if (rb->Name != 0) {
y0 = fb->_Ymin;
y1 = fb->_Ymax;
} else {
y0 = rb->Height - fb->_Ymax;
y1 = rb->Height - fb->_Ymin;
}
float *push_consts = (float *)&wm_push_consts;
push_consts[0] = ctx->Color.ClearColor.f[0];
push_consts[1] = ctx->Color.ClearColor.f[1];
push_consts[2] = ctx->Color.ClearColor.f[2];
push_consts[3] = ctx->Color.ClearColor.f[3];
use_wm_prog = true;
memset(&wm_prog_key, 0, sizeof(wm_prog_key));
wm_prog_key.use_simd16_replicated_data = true;
/* From the SNB PRM (Vol4_Part1):
*
* "Replicated data (Message Type = 111) is only supported when
* accessing tiled memory. Using this Message Type to access linear
* (untiled) memory is UNDEFINED."
*/
if (irb->mt->region->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]) {
color_write_disable[i] = true;
wm_prog_key.use_simd16_replicated_data = false;
}
}
}
uint32_t
brw_blorp_clear_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,
&this->wm_prog_key, sizeof(this->wm_prog_key),
&prog_offset, prog_data)) {
brw_blorp_clear_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,
&this->wm_prog_key, sizeof(this->wm_prog_key),
program, program_size,
&prog.prog_data, sizeof(prog.prog_data),
&prog_offset, prog_data);
}
return prog_offset;
}
void
brw_blorp_clear_program::alloc_regs()
{
int reg = 0;
this->R0 = retype(brw_vec8_grf(reg++, 0), BRW_REGISTER_TYPE_UW);
this->R1 = retype(brw_vec8_grf(reg++, 0), BRW_REGISTER_TYPE_UW);
prog_data.first_curbe_grf = reg;
clear_rgba = retype(brw_vec4_grf(reg++, 0), BRW_REGISTER_TYPE_F);
reg += BRW_BLORP_NUM_PUSH_CONST_REGS;
/* Make sure we didn't run out of registers */
assert(reg <= GEN7_MRF_HACK_START);
this->base_mrf = 2;
}
const GLuint *
brw_blorp_clear_program::compile(struct brw_context *brw,
GLuint *program_size)
{
/* Set up prog_data */
memset(&prog_data, 0, sizeof(prog_data));
prog_data.persample_msaa_dispatch = false;
alloc_regs();
brw_set_compression_control(&func, BRW_COMPRESSION_NONE);
struct brw_reg mrf_rt_write =
retype(vec16(brw_message_reg(base_mrf)), BRW_REGISTER_TYPE_F);
uint32_t mlen, msg_type;
if (key->use_simd16_replicated_data) {
/* 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_MOV(&func, vec4(brw_message_reg(base_mrf)), clear_rgba);
brw_set_mask_control(&func, BRW_MASK_ENABLE);
msg_type = BRW_DATAPORT_RENDER_TARGET_WRITE_SIMD16_SINGLE_SOURCE_REPLICATED;
mlen = 1;
} else {
for (int i = 0; i < 4; i++) {
/* 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_MOV(&func,
brw_message_reg(base_mrf + i * 2),
brw_vec1_grf(clear_rgba.nr, i));
brw_set_compression_control(&func, BRW_COMPRESSION_NONE);
}
msg_type = BRW_DATAPORT_RENDER_TARGET_WRITE_SIMD16_SINGLE_SOURCE;
mlen = 8;
}
/* Now write to the render target and terminate the thread */
brw_fb_WRITE(&func,
16 /* dispatch_width */,
base_mrf /* msg_reg_nr */,
mrf_rt_write /* src0 */,
msg_type,
BRW_BLORP_RENDERBUFFER_BINDING_TABLE_INDEX,
mlen,
0 /* response_length */,
true /* eot */,
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");
}
return brw_get_program(&func, program_size);
}
extern "C" {
bool
brw_blorp_clear_color(struct intel_context *intel, struct gl_framebuffer *fb)
{
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);
if (irb && irb->mt->msaa_layout != INTEL_MSAA_LAYOUT_NONE)
return false;
}
for (unsigned buf = 0; buf < ctx->DrawBuffer->_NumColorDrawBuffers; buf++) {
struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[buf];
/* If this is an ES2 context or GL_ARB_ES2_compatibility is supported,
* the framebuffer can be complete with some attachments missing. In
* this case the _ColorDrawBuffers pointer will be NULL.
*/
if (rb == NULL)
continue;
brw_blorp_clear_params params(brw, fb, rb, ctx->Color.ColorMask[buf]);
brw_blorp_exec(intel, ¶ms);
}
return true;
}
} /* extern "C" */
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