/*
* Copyright © 2011 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.
*/
#include "brw_context.h"
#include "brw_state.h"
#include "brw_defines.h"
#include "brw_util.h"
#include "main/macros.h"
#include "main/fbobject.h"
#include "intel_batchbuffer.h"
static void
upload_sbe_state(struct brw_context *brw)
{
struct gl_context *ctx = &brw->ctx;
/* BRW_NEW_FS_PROG_DATA */
uint32_t num_outputs = brw->wm.prog_data->num_varying_inputs;
uint32_t dw1;
uint32_t point_sprite_enables;
uint32_t flat_enables;
int i;
const int urb_entry_read_offset = BRW_SF_URB_ENTRY_READ_OFFSET;
uint16_t attr_overrides[16];
/* _NEW_BUFFERS */
bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
uint32_t point_sprite_origin;
/* FINISHME: Attribute Swizzle Control Mode? */
dw1 = GEN7_SBE_SWIZZLE_ENABLE | num_outputs << GEN7_SBE_NUM_OUTPUTS_SHIFT;
/* _NEW_POINT
*
* Window coordinates in an FBO are inverted, which means point
* sprite origin must be inverted.
*/
if ((ctx->Point.SpriteOrigin == GL_LOWER_LEFT) != render_to_fbo) {
point_sprite_origin = GEN6_SF_POINT_SPRITE_LOWERLEFT;
} else {
point_sprite_origin = GEN6_SF_POINT_SPRITE_UPPERLEFT;
}
dw1 |= point_sprite_origin;
/* BRW_NEW_VUE_MAP_GEOM_OUT | BRW_NEW_FRAGMENT_PROGRAM
* _NEW_POINT | _NEW_LIGHT | _NEW_PROGRAM | BRW_NEW_FS_PROG_DATA
*/
uint32_t urb_entry_read_length;
calculate_attr_overrides(brw, attr_overrides, &point_sprite_enables,
&flat_enables, &urb_entry_read_length);
dw1 |= urb_entry_read_length << GEN7_SBE_URB_ENTRY_READ_LENGTH_SHIFT |
urb_entry_read_offset << GEN7_SBE_URB_ENTRY_READ_OFFSET_SHIFT;
BEGIN_BATCH(14);
OUT_BATCH(_3DSTATE_SBE << 16 | (14 - 2));
OUT_BATCH(dw1);
/* Output dwords 2 through 9 */
for (i = 0; i < 8; i++) {
OUT_BATCH(attr_overrides[i * 2] | attr_overrides[i * 2 + 1] << 16);
}
OUT_BATCH(point_sprite_enables); /* dw10 */
OUT_BATCH(flat_enables);
OUT_BATCH(0); /* wrapshortest enables 0-7 */
OUT_BATCH(0); /* wrapshortest enables 8-15 */
ADVANCE_BATCH();
}
const struct brw_tracked_state gen7_sbe_state = {
.dirty = {
.mesa = _NEW_BUFFERS |
_NEW_LIGHT |
_NEW_POINT |
_NEW_PROGRAM,
.brw = BRW_NEW_CONTEXT |
BRW_NEW_FRAGMENT_PROGRAM |
BRW_NEW_FS_PROG_DATA |
BRW_NEW_GEOMETRY_PROGRAM |
BRW_NEW_PRIMITIVE |
BRW_NEW_VUE_MAP_GEOM_OUT,
},
.emit = upload_sbe_state,
};
static void
upload_sf_state(struct brw_context *brw)
{
struct gl_context *ctx = &brw->ctx;
uint32_t dw1, dw2, dw3;
float point_size;
/* _NEW_BUFFERS */
bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
bool multisampled_fbo = ctx->DrawBuffer->Visual.samples > 1;
dw1 = GEN6_SF_STATISTICS_ENABLE;
if (brw->sf.viewport_transform_enable)
dw1 |= GEN6_SF_VIEWPORT_TRANSFORM_ENABLE;
/* _NEW_BUFFERS */
dw1 |= (brw_depthbuffer_format(brw) << GEN7_SF_DEPTH_BUFFER_SURFACE_FORMAT_SHIFT);
/* _NEW_POLYGON */
if (ctx->Polygon._FrontBit == render_to_fbo)
dw1 |= GEN6_SF_WINDING_CCW;
if (ctx->Polygon.OffsetFill)
dw1 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_SOLID;
if (ctx->Polygon.OffsetLine)
dw1 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_WIREFRAME;
if (ctx->Polygon.OffsetPoint)
dw1 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_POINT;
switch (ctx->Polygon.FrontMode) {
case GL_FILL:
dw1 |= GEN6_SF_FRONT_SOLID;
break;
case GL_LINE:
dw1 |= GEN6_SF_FRONT_WIREFRAME;
break;
case GL_POINT:
dw1 |= GEN6_SF_FRONT_POINT;
break;
default:
unreachable("not reached");
}
switch (ctx->Polygon.BackMode) {
case GL_FILL:
dw1 |= GEN6_SF_BACK_SOLID;
break;
case GL_LINE:
dw1 |= GEN6_SF_BACK_WIREFRAME;
break;
case GL_POINT:
dw1 |= GEN6_SF_BACK_POINT;
break;
default:
unreachable("not reached");
}
dw2 = 0;
if (ctx->Polygon.CullFlag) {
switch (ctx->Polygon.CullFaceMode) {
case GL_FRONT:
dw2 |= GEN6_SF_CULL_FRONT;
break;
case GL_BACK:
dw2 |= GEN6_SF_CULL_BACK;
break;
case GL_FRONT_AND_BACK:
dw2 |= GEN6_SF_CULL_BOTH;
break;
default:
unreachable("not reached");
}
} else {
dw2 |= GEN6_SF_CULL_NONE;
}
/* _NEW_SCISSOR */
if (ctx->Scissor.EnableFlags)
dw2 |= GEN6_SF_SCISSOR_ENABLE;
/* _NEW_LINE */
{
/* OpenGL dictates that line width should be rounded to the nearest
* integer
*/
float line_width =
roundf(CLAMP(ctx->Line.Width, 0.0, ctx->Const.MaxLineWidth));
uint32_t line_width_u3_7 = U_FIXED(line_width, 7);
/* Line width of 0 is not allowed when MSAA enabled */
if (ctx->Multisample._Enabled) {
if (line_width_u3_7 == 0)
line_width_u3_7 = 1;
} else if (ctx->Line.SmoothFlag && ctx->Line.Width < 1.5) {
/* For 1 pixel line thickness or less, the general
* anti-aliasing algorithm gives up, and a garbage line is
* generated. Setting a Line Width of 0.0 specifies the
* rasterization of the "thinnest" (one-pixel-wide),
* non-antialiased lines.
*
* Lines rendered with zero Line Width are rasterized using
* Grid Intersection Quantization rules as specified by
* bspec section 6.3.12.1 Zero-Width (Cosmetic) Line
* Rasterization.
*/
line_width_u3_7 = 0;
}
dw2 |= line_width_u3_7 << GEN6_SF_LINE_WIDTH_SHIFT;
}
if (ctx->Line.SmoothFlag) {
dw2 |= GEN6_SF_LINE_AA_ENABLE;
dw2 |= GEN6_SF_LINE_END_CAP_WIDTH_1_0;
}
if (ctx->Line.StippleFlag && brw->is_haswell) {
dw2 |= HSW_SF_LINE_STIPPLE_ENABLE;
}
/* _NEW_MULTISAMPLE */
if (multisampled_fbo && ctx->Multisample.Enabled)
dw2 |= GEN6_SF_MSRAST_ON_PATTERN;
/* FINISHME: Last Pixel Enable? Vertex Sub Pixel Precision Select?
*/
dw3 = GEN6_SF_LINE_AA_MODE_TRUE;
/* _NEW_PROGRAM | _NEW_POINT */
if (!(ctx->VertexProgram.PointSizeEnabled || ctx->Point._Attenuated))
dw3 |= GEN6_SF_USE_STATE_POINT_WIDTH;
/* Clamp to ARB_point_parameters user limits */
point_size = CLAMP(ctx->Point.Size, ctx->Point.MinSize, ctx->Point.MaxSize);
/* Clamp to the hardware limits and convert to fixed point */
dw3 |= U_FIXED(CLAMP(point_size, 0.125, 255.875), 3);
/* _NEW_LIGHT */
if (ctx->Light.ProvokingVertex != GL_FIRST_VERTEX_CONVENTION) {
dw3 |=
(2 << GEN6_SF_TRI_PROVOKE_SHIFT) |
(2 << GEN6_SF_TRIFAN_PROVOKE_SHIFT) |
(1 << GEN6_SF_LINE_PROVOKE_SHIFT);
} else {
dw3 |= (1 << GEN6_SF_TRIFAN_PROVOKE_SHIFT);
}
BEGIN_BATCH(7);
OUT_BATCH(_3DSTATE_SF << 16 | (7 - 2));
OUT_BATCH(dw1);
OUT_BATCH(dw2);
OUT_BATCH(dw3);
OUT_BATCH_F(ctx->Polygon.OffsetUnits * 2); /* constant. copied from gen4 */
OUT_BATCH_F(ctx->Polygon.OffsetFactor); /* scale */
OUT_BATCH_F(ctx->Polygon.OffsetClamp); /* global depth offset clamp */
ADVANCE_BATCH();
}
const struct brw_tracked_state gen7_sf_state = {
.dirty = {
.mesa = _NEW_BUFFERS |
_NEW_LIGHT |
_NEW_LINE |
_NEW_MULTISAMPLE |
_NEW_POINT |
_NEW_POLYGON |
_NEW_PROGRAM |
_NEW_SCISSOR,
.brw = BRW_NEW_CONTEXT,
},
.emit = upload_sf_state,
};