2 * Copyright © 2011 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 #include "brw_context.h"
25 #include "brw_state.h"
26 #include "brw_defines.h"
28 #include "main/macros.h"
29 #include "intel_batchbuffer.h"
32 upload_sbe_state(struct brw_context *brw)
34 struct intel_context *intel = &brw->intel;
35 struct gl_context *ctx = &intel->ctx;
36 struct brw_vue_map vue_map;
37 uint32_t urb_entry_read_length;
38 /* CACHE_NEW_VS_PROG */
39 GLbitfield64 vs_outputs_written = brw->vs.prog_data->outputs_written;
40 /* BRW_NEW_FRAGMENT_PROGRAM */
41 uint32_t num_outputs = _mesa_bitcount_64(brw->fragment_program->Base.InputsRead);
43 bool shade_model_flat = ctx->Light.ShadeModel == GL_FLAT;
44 uint32_t dw1, dw10, dw11;
46 int attr = 0, input_index = 0;
48 int urb_entry_read_offset = 1;
49 bool userclip_active = (ctx->Transform.ClipPlanesEnabled != 0);
50 uint16_t attr_overrides[FRAG_ATTRIB_MAX];
52 bool render_to_fbo = ctx->DrawBuffer->Name != 0;
53 uint32_t point_sprite_origin;
55 brw_compute_vue_map(&vue_map, intel, userclip_active, vs_outputs_written);
56 urb_entry_read_length = (vue_map.num_slots + 1)/2 - urb_entry_read_offset;
57 if (urb_entry_read_length == 0) {
58 /* Setting the URB entry read length to 0 causes undefined behavior, so
59 * if we have no URB data to read, set it to 1.
61 urb_entry_read_length = 1;
64 /* FINISHME: Attribute Swizzle Control Mode? */
66 GEN7_SBE_SWIZZLE_ENABLE |
67 num_outputs << GEN7_SBE_NUM_OUTPUTS_SHIFT |
68 urb_entry_read_length << GEN7_SBE_URB_ENTRY_READ_LENGTH_SHIFT |
69 urb_entry_read_offset << GEN7_SBE_URB_ENTRY_READ_OFFSET_SHIFT;
73 * Window coordinates in an FBO are inverted, which means point
74 * sprite origin must be inverted.
76 if ((ctx->Point.SpriteOrigin == GL_LOWER_LEFT) != render_to_fbo) {
77 point_sprite_origin = GEN6_SF_POINT_SPRITE_LOWERLEFT;
79 point_sprite_origin = GEN6_SF_POINT_SPRITE_UPPERLEFT;
81 dw1 |= point_sprite_origin;
87 /* Create the mapping from the FS inputs we produce to the VS outputs
90 for (; attr < FRAG_ATTRIB_MAX; attr++) {
91 enum glsl_interp_qualifier interp_qualifier =
92 brw->fragment_program->InterpQualifier[attr];
93 bool is_gl_Color = attr == FRAG_ATTRIB_COL0 || attr == FRAG_ATTRIB_COL1;
95 if (!(brw->fragment_program->Base.InputsRead & BITFIELD64_BIT(attr)))
98 if (ctx->Point.PointSprite &&
99 attr >= FRAG_ATTRIB_TEX0 && attr <= FRAG_ATTRIB_TEX7 &&
100 ctx->Point.CoordReplace[attr - FRAG_ATTRIB_TEX0]) {
101 dw10 |= (1 << input_index);
104 if (attr == FRAG_ATTRIB_PNTC)
105 dw10 |= (1 << input_index);
108 if (interp_qualifier == INTERP_QUALIFIER_FLAT ||
109 (shade_model_flat && is_gl_Color &&
110 interp_qualifier == INTERP_QUALIFIER_NONE))
111 dw11 |= (1 << input_index);
113 /* The hardware can only do the overrides on 16 overrides at a
114 * time, and the other up to 16 have to be lined up so that the
115 * input index = the output index. We'll need to do some
116 * tweaking to make sure that's the case.
118 assert(input_index < 16 || attr == input_index);
120 /* _NEW_LIGHT | _NEW_PROGRAM */
121 attr_overrides[input_index++] =
122 get_attr_override(&vue_map, urb_entry_read_offset, attr,
123 ctx->VertexProgram._TwoSideEnabled);
126 for (; input_index < FRAG_ATTRIB_MAX; input_index++)
127 attr_overrides[input_index] = 0;
130 OUT_BATCH(_3DSTATE_SBE << 16 | (14 - 2));
133 /* Output dwords 2 through 9 */
134 for (i = 0; i < 8; i++) {
135 OUT_BATCH(attr_overrides[i * 2] | attr_overrides[i * 2 + 1] << 16);
138 OUT_BATCH(dw10); /* point sprite texcoord bitmask */
139 OUT_BATCH(dw11); /* constant interp bitmask */
140 OUT_BATCH(0); /* wrapshortest enables 0-7 */
141 OUT_BATCH(0); /* wrapshortest enables 8-15 */
145 const struct brw_tracked_state gen7_sbe_state = {
147 .mesa = (_NEW_LIGHT |
151 .brw = (BRW_NEW_CONTEXT |
152 BRW_NEW_FRAGMENT_PROGRAM),
153 .cache = CACHE_NEW_VS_PROG
155 .emit = upload_sbe_state,
159 upload_sf_state(struct brw_context *brw)
161 struct intel_context *intel = &brw->intel;
162 struct gl_context *ctx = &intel->ctx;
163 uint32_t dw1, dw2, dw3;
166 bool render_to_fbo = brw->intel.ctx.DrawBuffer->Name != 0;
168 dw1 = GEN6_SF_STATISTICS_ENABLE |
169 GEN6_SF_VIEWPORT_TRANSFORM_ENABLE;
172 dw1 |= (brw_depthbuffer_format(brw) << GEN7_SF_DEPTH_BUFFER_SURFACE_FORMAT_SHIFT);
175 if ((ctx->Polygon.FrontFace == GL_CCW) ^ render_to_fbo)
176 dw1 |= GEN6_SF_WINDING_CCW;
178 if (ctx->Polygon.OffsetFill)
179 dw1 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_SOLID;
181 if (ctx->Polygon.OffsetLine)
182 dw1 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_WIREFRAME;
184 if (ctx->Polygon.OffsetPoint)
185 dw1 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_POINT;
187 switch (ctx->Polygon.FrontMode) {
189 dw1 |= GEN6_SF_FRONT_SOLID;
193 dw1 |= GEN6_SF_FRONT_WIREFRAME;
197 dw1 |= GEN6_SF_FRONT_POINT;
205 switch (ctx->Polygon.BackMode) {
207 dw1 |= GEN6_SF_BACK_SOLID;
211 dw1 |= GEN6_SF_BACK_WIREFRAME;
215 dw1 |= GEN6_SF_BACK_POINT;
225 if (ctx->Polygon.CullFlag) {
226 switch (ctx->Polygon.CullFaceMode) {
228 dw2 |= GEN6_SF_CULL_FRONT;
231 dw2 |= GEN6_SF_CULL_BACK;
233 case GL_FRONT_AND_BACK:
234 dw2 |= GEN6_SF_CULL_BOTH;
241 dw2 |= GEN6_SF_CULL_NONE;
245 if (ctx->Scissor.Enabled)
246 dw2 |= GEN6_SF_SCISSOR_ENABLE;
249 dw2 |= U_FIXED(CLAMP(ctx->Line.Width, 0.0, 7.99), 7) <<
250 GEN6_SF_LINE_WIDTH_SHIFT;
251 if (ctx->Line.SmoothFlag) {
252 dw2 |= GEN6_SF_LINE_AA_ENABLE;
253 dw2 |= GEN6_SF_LINE_AA_MODE_TRUE;
254 dw2 |= GEN6_SF_LINE_END_CAP_WIDTH_1_0;
257 /* FINISHME: Last Pixel Enable? Vertex Sub Pixel Precision Select?
258 * FINISHME: AA Line Distance Mode?
263 /* _NEW_PROGRAM | _NEW_POINT */
264 if (!(ctx->VertexProgram.PointSizeEnabled || ctx->Point._Attenuated))
265 dw3 |= GEN6_SF_USE_STATE_POINT_WIDTH;
267 /* Clamp to ARB_point_parameters user limits */
268 point_size = CLAMP(ctx->Point.Size, ctx->Point.MinSize, ctx->Point.MaxSize);
270 /* Clamp to the hardware limits and convert to fixed point */
271 dw3 |= U_FIXED(CLAMP(point_size, 0.125, 255.875), 3);
274 if (ctx->Light.ProvokingVertex != GL_FIRST_VERTEX_CONVENTION) {
276 (2 << GEN6_SF_TRI_PROVOKE_SHIFT) |
277 (2 << GEN6_SF_TRIFAN_PROVOKE_SHIFT) |
278 (1 << GEN6_SF_LINE_PROVOKE_SHIFT);
280 dw3 |= (1 << GEN6_SF_TRIFAN_PROVOKE_SHIFT);
284 OUT_BATCH(_3DSTATE_SF << 16 | (7 - 2));
288 OUT_BATCH_F(ctx->Polygon.OffsetUnits * 2); /* constant. copied from gen4 */
289 OUT_BATCH_F(ctx->Polygon.OffsetFactor); /* scale */
290 OUT_BATCH_F(0.0); /* XXX: global depth offset clamp */
294 const struct brw_tracked_state gen7_sf_state = {
296 .mesa = (_NEW_LIGHT |
303 .brw = BRW_NEW_CONTEXT,
304 .cache = CACHE_NEW_VS_PROG
306 .emit = upload_sf_state,