0,0 → 1,262 |
/* |
Copyright (C) Intel Corp. 2006. All Rights Reserved. |
Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to |
develop this 3D driver. |
|
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 COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS 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. |
|
**********************************************************************/ |
/* |
* Authors: |
* Keith Whitwell <keith@tungstengraphics.com> |
*/ |
|
#include "main/glheader.h" |
#include "main/macros.h" |
#include "main/enums.h" |
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#include "intel_batchbuffer.h" |
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#include "brw_defines.h" |
#include "brw_context.h" |
#include "brw_eu.h" |
#include "brw_util.h" |
#include "brw_state.h" |
#include "brw_clip.h" |
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#include "glsl/ralloc.h" |
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#define FRONT_UNFILLED_BIT 0x1 |
#define BACK_UNFILLED_BIT 0x2 |
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static void compile_clip_prog( struct brw_context *brw, |
struct brw_clip_prog_key *key ) |
{ |
struct brw_clip_compile c; |
const GLuint *program; |
void *mem_ctx; |
GLuint program_size; |
GLuint i; |
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memset(&c, 0, sizeof(c)); |
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mem_ctx = ralloc_context(NULL); |
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/* Begin the compilation: |
*/ |
brw_init_compile(brw, &c.func, mem_ctx); |
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c.func.single_program_flow = 1; |
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c.key = *key; |
c.vue_map = brw->vue_map_geom_out; |
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/* nr_regs is the number of registers filled by reading data from the VUE. |
* This program accesses the entire VUE, so nr_regs needs to be the size of |
* the VUE (measured in pairs, since two slots are stored in each |
* register). |
*/ |
c.nr_regs = (c.vue_map.num_slots + 1)/2; |
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c.prog_data.clip_mode = c.key.clip_mode; /* XXX */ |
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/* For some reason the thread is spawned with only 4 channels |
* unmasked. |
*/ |
brw_set_mask_control(&c.func, BRW_MASK_DISABLE); |
|
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/* Would ideally have the option of producing a program which could |
* do all three: |
*/ |
switch (key->primitive) { |
case GL_TRIANGLES: |
if (key->do_unfilled) |
brw_emit_unfilled_clip( &c ); |
else |
brw_emit_tri_clip( &c ); |
break; |
case GL_LINES: |
brw_emit_line_clip( &c ); |
break; |
case GL_POINTS: |
brw_emit_point_clip( &c ); |
break; |
default: |
assert(0); |
return; |
} |
|
|
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/* get the program |
*/ |
program = brw_get_program(&c.func, &program_size); |
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if (unlikely(INTEL_DEBUG & DEBUG_CLIP)) { |
printf("clip:\n"); |
for (i = 0; i < program_size / sizeof(struct brw_instruction); i++) |
brw_disasm(stdout, &((struct brw_instruction *)program)[i], |
brw->gen); |
printf("\n"); |
} |
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brw_upload_cache(&brw->cache, |
BRW_CLIP_PROG, |
&c.key, sizeof(c.key), |
program, program_size, |
&c.prog_data, sizeof(c.prog_data), |
&brw->clip.prog_offset, &brw->clip.prog_data); |
ralloc_free(mem_ctx); |
} |
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/* Calculate interpolants for triangle and line rasterization. |
*/ |
static void |
brw_upload_clip_prog(struct brw_context *brw) |
{ |
struct gl_context *ctx = &brw->ctx; |
struct brw_clip_prog_key key; |
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memset(&key, 0, sizeof(key)); |
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/* Populate the key: |
*/ |
/* BRW_NEW_REDUCED_PRIMITIVE */ |
key.primitive = brw->reduced_primitive; |
/* BRW_NEW_VUE_MAP_GEOM_OUT */ |
key.attrs = brw->vue_map_geom_out.slots_valid; |
/* _NEW_LIGHT */ |
key.do_flat_shading = (ctx->Light.ShadeModel == GL_FLAT); |
key.pv_first = (ctx->Light.ProvokingVertex == GL_FIRST_VERTEX_CONVENTION); |
/* _NEW_TRANSFORM (also part of VUE map)*/ |
key.nr_userclip = _mesa_bitcount_64(ctx->Transform.ClipPlanesEnabled); |
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if (brw->gen == 5) |
key.clip_mode = BRW_CLIPMODE_KERNEL_CLIP; |
else |
key.clip_mode = BRW_CLIPMODE_NORMAL; |
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/* _NEW_POLYGON */ |
if (key.primitive == GL_TRIANGLES) { |
if (ctx->Polygon.CullFlag && |
ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK) |
key.clip_mode = BRW_CLIPMODE_REJECT_ALL; |
else { |
GLuint fill_front = CLIP_CULL; |
GLuint fill_back = CLIP_CULL; |
GLuint offset_front = 0; |
GLuint offset_back = 0; |
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if (!ctx->Polygon.CullFlag || |
ctx->Polygon.CullFaceMode != GL_FRONT) { |
switch (ctx->Polygon.FrontMode) { |
case GL_FILL: |
fill_front = CLIP_FILL; |
offset_front = 0; |
break; |
case GL_LINE: |
fill_front = CLIP_LINE; |
offset_front = ctx->Polygon.OffsetLine; |
break; |
case GL_POINT: |
fill_front = CLIP_POINT; |
offset_front = ctx->Polygon.OffsetPoint; |
break; |
} |
} |
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if (!ctx->Polygon.CullFlag || |
ctx->Polygon.CullFaceMode != GL_BACK) { |
switch (ctx->Polygon.BackMode) { |
case GL_FILL: |
fill_back = CLIP_FILL; |
offset_back = 0; |
break; |
case GL_LINE: |
fill_back = CLIP_LINE; |
offset_back = ctx->Polygon.OffsetLine; |
break; |
case GL_POINT: |
fill_back = CLIP_POINT; |
offset_back = ctx->Polygon.OffsetPoint; |
break; |
} |
} |
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if (ctx->Polygon.BackMode != GL_FILL || |
ctx->Polygon.FrontMode != GL_FILL) { |
key.do_unfilled = 1; |
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/* Most cases the fixed function units will handle. Cases where |
* one or more polygon faces are unfilled will require help: |
*/ |
key.clip_mode = BRW_CLIPMODE_CLIP_NON_REJECTED; |
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if (offset_back || offset_front) { |
/* _NEW_POLYGON, _NEW_BUFFERS */ |
key.offset_units = ctx->Polygon.OffsetUnits * ctx->DrawBuffer->_MRD * 2; |
key.offset_factor = ctx->Polygon.OffsetFactor * ctx->DrawBuffer->_MRD; |
} |
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switch (ctx->Polygon.FrontFace) { |
case GL_CCW: |
key.fill_ccw = fill_front; |
key.fill_cw = fill_back; |
key.offset_ccw = offset_front; |
key.offset_cw = offset_back; |
if (ctx->Light.Model.TwoSide && |
key.fill_cw != CLIP_CULL) |
key.copy_bfc_cw = 1; |
break; |
case GL_CW: |
key.fill_cw = fill_front; |
key.fill_ccw = fill_back; |
key.offset_cw = offset_front; |
key.offset_ccw = offset_back; |
if (ctx->Light.Model.TwoSide && |
key.fill_ccw != CLIP_CULL) |
key.copy_bfc_ccw = 1; |
break; |
} |
} |
} |
} |
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if (!brw_search_cache(&brw->cache, BRW_CLIP_PROG, |
&key, sizeof(key), |
&brw->clip.prog_offset, &brw->clip.prog_data)) { |
compile_clip_prog( brw, &key ); |
} |
} |
|
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const struct brw_tracked_state brw_clip_prog = { |
.dirty = { |
.mesa = (_NEW_LIGHT | |
_NEW_TRANSFORM | |
_NEW_POLYGON | |
_NEW_BUFFERS), |
.brw = (BRW_NEW_REDUCED_PRIMITIVE | BRW_NEW_VUE_MAP_GEOM_OUT) |
}, |
.emit = brw_upload_clip_prog |
}; |