1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
29 #include "main/glheader.h"
30 #include "main/context.h"
31 #include "main/macros.h"
32 #include "main/enums.h"
33 #include "main/fbobject.h"
35 #include "main/state.h"
37 #include "tnl/t_context.h"
39 #include "drivers/common/driverfuncs.h"
41 #include "intel_fbo.h"
42 #include "intel_screen.h"
43 #include "intel_batchbuffer.h"
44 #include "intel_buffers.h"
46 #include "i915_context.h"
49 #define FILE_DEBUG_FLAG DEBUG_STATE
52 i915_update_stencil(struct gl_context
* ctx
)
54 struct i915_context
*i915
= I915_CONTEXT(ctx
);
55 GLuint front_ref
, front_writemask
, front_mask
;
56 GLenum front_func
, front_fail
, front_pass_z_fail
, front_pass_z_pass
;
57 GLuint back_ref
, back_writemask
, back_mask
;
58 GLenum back_func
, back_fail
, back_pass_z_fail
, back_pass_z_pass
;
61 /* The 915 considers CW to be "front" for two-sided stencil, so choose
64 /* _NEW_POLYGON | _NEW_STENCIL */
65 if (ctx
->Polygon
.FrontFace
== GL_CW
) {
66 front_ref
= ctx
->Stencil
.Ref
[0];
67 front_mask
= ctx
->Stencil
.ValueMask
[0];
68 front_writemask
= ctx
->Stencil
.WriteMask
[0];
69 front_func
= ctx
->Stencil
.Function
[0];
70 front_fail
= ctx
->Stencil
.FailFunc
[0];
71 front_pass_z_fail
= ctx
->Stencil
.ZFailFunc
[0];
72 front_pass_z_pass
= ctx
->Stencil
.ZPassFunc
[0];
73 back_ref
= ctx
->Stencil
.Ref
[ctx
->Stencil
._BackFace
];
74 back_mask
= ctx
->Stencil
.ValueMask
[ctx
->Stencil
._BackFace
];
75 back_writemask
= ctx
->Stencil
.WriteMask
[ctx
->Stencil
._BackFace
];
76 back_func
= ctx
->Stencil
.Function
[ctx
->Stencil
._BackFace
];
77 back_fail
= ctx
->Stencil
.FailFunc
[ctx
->Stencil
._BackFace
];
78 back_pass_z_fail
= ctx
->Stencil
.ZFailFunc
[ctx
->Stencil
._BackFace
];
79 back_pass_z_pass
= ctx
->Stencil
.ZPassFunc
[ctx
->Stencil
._BackFace
];
81 front_ref
= ctx
->Stencil
.Ref
[ctx
->Stencil
._BackFace
];
82 front_mask
= ctx
->Stencil
.ValueMask
[ctx
->Stencil
._BackFace
];
83 front_writemask
= ctx
->Stencil
.WriteMask
[ctx
->Stencil
._BackFace
];
84 front_func
= ctx
->Stencil
.Function
[ctx
->Stencil
._BackFace
];
85 front_fail
= ctx
->Stencil
.FailFunc
[ctx
->Stencil
._BackFace
];
86 front_pass_z_fail
= ctx
->Stencil
.ZFailFunc
[ctx
->Stencil
._BackFace
];
87 front_pass_z_pass
= ctx
->Stencil
.ZPassFunc
[ctx
->Stencil
._BackFace
];
88 back_ref
= ctx
->Stencil
.Ref
[0];
89 back_mask
= ctx
->Stencil
.ValueMask
[0];
90 back_writemask
= ctx
->Stencil
.WriteMask
[0];
91 back_func
= ctx
->Stencil
.Function
[0];
92 back_fail
= ctx
->Stencil
.FailFunc
[0];
93 back_pass_z_fail
= ctx
->Stencil
.ZFailFunc
[0];
94 back_pass_z_pass
= ctx
->Stencil
.ZPassFunc
[0];
96 #define set_ctx_bits(reg, mask, set) do{ \
97 GLuint dw = i915->state.Ctx[reg]; \
100 dirty |= dw != i915->state.Ctx[reg]; \
101 i915->state.Ctx[reg] = dw; \
104 /* Set front state. */
105 set_ctx_bits(I915_CTXREG_STATE4
,
106 MODE4_ENABLE_STENCIL_TEST_MASK
|
107 MODE4_ENABLE_STENCIL_WRITE_MASK
,
108 ENABLE_STENCIL_TEST_MASK
|
109 ENABLE_STENCIL_WRITE_MASK
|
110 STENCIL_TEST_MASK(front_mask
) |
111 STENCIL_WRITE_MASK(front_writemask
));
113 set_ctx_bits(I915_CTXREG_LIS5
,
114 S5_STENCIL_REF_MASK
|
115 S5_STENCIL_TEST_FUNC_MASK
|
116 S5_STENCIL_FAIL_MASK
|
117 S5_STENCIL_PASS_Z_FAIL_MASK
|
118 S5_STENCIL_PASS_Z_PASS_MASK
,
119 (front_ref
<< S5_STENCIL_REF_SHIFT
) |
120 (intel_translate_compare_func(front_func
) << S5_STENCIL_TEST_FUNC_SHIFT
) |
121 (intel_translate_stencil_op(front_fail
) << S5_STENCIL_FAIL_SHIFT
) |
122 (intel_translate_stencil_op(front_pass_z_fail
) <<
123 S5_STENCIL_PASS_Z_FAIL_SHIFT
) |
124 (intel_translate_stencil_op(front_pass_z_pass
) <<
125 S5_STENCIL_PASS_Z_PASS_SHIFT
));
127 /* Set back state if different from front. */
128 if (ctx
->Stencil
._TestTwoSide
) {
129 set_ctx_bits(I915_CTXREG_BF_STENCIL_OPS
,
130 BFO_STENCIL_REF_MASK
|
131 BFO_STENCIL_TEST_MASK
|
132 BFO_STENCIL_FAIL_MASK
|
133 BFO_STENCIL_PASS_Z_FAIL_MASK
|
134 BFO_STENCIL_PASS_Z_PASS_MASK
,
135 BFO_STENCIL_TWO_SIDE
|
136 (back_ref
<< BFO_STENCIL_REF_SHIFT
) |
137 (intel_translate_compare_func(back_func
) << BFO_STENCIL_TEST_SHIFT
) |
138 (intel_translate_stencil_op(back_fail
) << BFO_STENCIL_FAIL_SHIFT
) |
139 (intel_translate_stencil_op(back_pass_z_fail
) <<
140 BFO_STENCIL_PASS_Z_FAIL_SHIFT
) |
141 (intel_translate_stencil_op(back_pass_z_pass
) <<
142 BFO_STENCIL_PASS_Z_PASS_SHIFT
));
144 set_ctx_bits(I915_CTXREG_BF_STENCIL_MASKS
,
145 BFM_STENCIL_TEST_MASK_MASK
|
146 BFM_STENCIL_WRITE_MASK_MASK
,
147 BFM_STENCIL_TEST_MASK(back_mask
) |
148 BFM_STENCIL_WRITE_MASK(back_writemask
));
150 set_ctx_bits(I915_CTXREG_BF_STENCIL_OPS
,
151 BFO_STENCIL_TWO_SIDE
, 0);
157 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
161 i915StencilFuncSeparate(struct gl_context
* ctx
, GLenum face
, GLenum func
, GLint ref
,
167 i915StencilMaskSeparate(struct gl_context
* ctx
, GLenum face
, GLuint mask
)
172 i915StencilOpSeparate(struct gl_context
* ctx
, GLenum face
, GLenum fail
, GLenum zfail
,
178 i915AlphaFunc(struct gl_context
* ctx
, GLenum func
, GLfloat ref
)
180 struct i915_context
*i915
= I915_CONTEXT(ctx
);
181 int test
= intel_translate_compare_func(func
);
185 UNCLAMPED_FLOAT_TO_UBYTE(refByte
, ref
);
187 dw
= i915
->state
.Ctx
[I915_CTXREG_LIS6
];
188 dw
&= ~(S6_ALPHA_TEST_FUNC_MASK
| S6_ALPHA_REF_MASK
);
189 dw
|= ((test
<< S6_ALPHA_TEST_FUNC_SHIFT
) |
190 (((GLuint
) refByte
) << S6_ALPHA_REF_SHIFT
));
191 if (dw
!= i915
->state
.Ctx
[I915_CTXREG_LIS6
]) {
192 i915
->state
.Ctx
[I915_CTXREG_LIS6
] = dw
;
193 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
197 /* This function makes sure that the proper enables are
198 * set for LogicOp, Independant Alpha Blend, and Blending.
199 * It needs to be called from numerous places where we
200 * could change the LogicOp or Independant Alpha Blend without subsequent
204 i915EvalLogicOpBlendState(struct gl_context
* ctx
)
206 struct i915_context
*i915
= I915_CONTEXT(ctx
);
209 dw0
= i915
->state
.Ctx
[I915_CTXREG_LIS5
];
210 dw1
= i915
->state
.Ctx
[I915_CTXREG_LIS6
];
212 if (ctx
->Color
.ColorLogicOpEnabled
) {
213 dw0
|= S5_LOGICOP_ENABLE
;
214 dw1
&= ~S6_CBUF_BLEND_ENABLE
;
217 dw0
&= ~S5_LOGICOP_ENABLE
;
219 if (ctx
->Color
.BlendEnabled
) {
220 dw1
|= S6_CBUF_BLEND_ENABLE
;
223 dw1
&= ~S6_CBUF_BLEND_ENABLE
;
226 if (dw0
!= i915
->state
.Ctx
[I915_CTXREG_LIS5
] ||
227 dw1
!= i915
->state
.Ctx
[I915_CTXREG_LIS6
]) {
228 i915
->state
.Ctx
[I915_CTXREG_LIS5
] = dw0
;
229 i915
->state
.Ctx
[I915_CTXREG_LIS6
] = dw1
;
231 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
236 i915BlendColor(struct gl_context
* ctx
, const GLfloat color
[4])
238 struct i915_context
*i915
= I915_CONTEXT(ctx
);
242 DBG("%s\n", __FUNCTION__
);
244 UNCLAMPED_FLOAT_TO_UBYTE(r
, color
[RCOMP
]);
245 UNCLAMPED_FLOAT_TO_UBYTE(g
, color
[GCOMP
]);
246 UNCLAMPED_FLOAT_TO_UBYTE(b
, color
[BCOMP
]);
247 UNCLAMPED_FLOAT_TO_UBYTE(a
, color
[ACOMP
]);
249 dw
= (a
<< 24) | (r
<< 16) | (g
<< 8) | b
;
250 if (dw
!= i915
->state
.Blend
[I915_BLENDREG_BLENDCOLOR1
]) {
251 i915
->state
.Blend
[I915_BLENDREG_BLENDCOLOR1
] = dw
;
252 I915_STATECHANGE(i915
, I915_UPLOAD_BLEND
);
257 #define DST_BLND_FACT(f) ((f)<<S6_CBUF_DST_BLEND_FACT_SHIFT)
258 #define SRC_BLND_FACT(f) ((f)<<S6_CBUF_SRC_BLEND_FACT_SHIFT)
259 #define DST_ABLND_FACT(f) ((f)<<IAB_DST_FACTOR_SHIFT)
260 #define SRC_ABLND_FACT(f) ((f)<<IAB_SRC_FACTOR_SHIFT)
265 translate_blend_equation(GLenum mode
)
269 return BLENDFUNC_ADD
;
271 return BLENDFUNC_MIN
;
273 return BLENDFUNC_MAX
;
274 case GL_FUNC_SUBTRACT
:
275 return BLENDFUNC_SUBTRACT
;
276 case GL_FUNC_REVERSE_SUBTRACT
:
277 return BLENDFUNC_REVERSE_SUBTRACT
;
284 i915UpdateBlendState(struct gl_context
* ctx
)
286 struct i915_context
*i915
= I915_CONTEXT(ctx
);
287 GLuint iab
= (i915
->state
.Blend
[I915_BLENDREG_IAB
] &
288 ~(IAB_SRC_FACTOR_MASK
|
289 IAB_DST_FACTOR_MASK
|
290 (BLENDFUNC_MASK
<< IAB_FUNC_SHIFT
) | IAB_ENABLE
));
292 GLuint lis6
= (i915
->state
.Ctx
[I915_CTXREG_LIS6
] &
293 ~(S6_CBUF_SRC_BLEND_FACT_MASK
|
294 S6_CBUF_DST_BLEND_FACT_MASK
| S6_CBUF_BLEND_FUNC_MASK
));
296 GLuint eqRGB
= ctx
->Color
.Blend
[0].EquationRGB
;
297 GLuint eqA
= ctx
->Color
.Blend
[0].EquationA
;
298 GLuint srcRGB
= ctx
->Color
.Blend
[0].SrcRGB
;
299 GLuint dstRGB
= ctx
->Color
.Blend
[0].DstRGB
;
300 GLuint srcA
= ctx
->Color
.Blend
[0].SrcA
;
301 GLuint dstA
= ctx
->Color
.Blend
[0].DstA
;
303 if (eqRGB
== GL_MIN
|| eqRGB
== GL_MAX
) {
304 srcRGB
= dstRGB
= GL_ONE
;
307 if (eqA
== GL_MIN
|| eqA
== GL_MAX
) {
308 srcA
= dstA
= GL_ONE
;
311 lis6
|= SRC_BLND_FACT(intel_translate_blend_factor(srcRGB
));
312 lis6
|= DST_BLND_FACT(intel_translate_blend_factor(dstRGB
));
313 lis6
|= translate_blend_equation(eqRGB
) << S6_CBUF_BLEND_FUNC_SHIFT
;
315 iab
|= SRC_ABLND_FACT(intel_translate_blend_factor(srcA
));
316 iab
|= DST_ABLND_FACT(intel_translate_blend_factor(dstA
));
317 iab
|= translate_blend_equation(eqA
) << IAB_FUNC_SHIFT
;
319 if (srcA
!= srcRGB
|| dstA
!= dstRGB
|| eqA
!= eqRGB
)
322 if (iab
!= i915
->state
.Blend
[I915_BLENDREG_IAB
]) {
323 i915
->state
.Blend
[I915_BLENDREG_IAB
] = iab
;
324 I915_STATECHANGE(i915
, I915_UPLOAD_BLEND
);
326 if (lis6
!= i915
->state
.Ctx
[I915_CTXREG_LIS6
]) {
327 i915
->state
.Ctx
[I915_CTXREG_LIS6
] = lis6
;
328 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
331 /* This will catch a logicop blend equation */
332 i915EvalLogicOpBlendState(ctx
);
337 i915BlendFuncSeparate(struct gl_context
* ctx
, GLenum srcRGB
,
338 GLenum dstRGB
, GLenum srcA
, GLenum dstA
)
340 i915UpdateBlendState(ctx
);
345 i915BlendEquationSeparate(struct gl_context
* ctx
, GLenum eqRGB
, GLenum eqA
)
347 i915UpdateBlendState(ctx
);
352 i915DepthFunc(struct gl_context
* ctx
, GLenum func
)
354 struct i915_context
*i915
= I915_CONTEXT(ctx
);
355 int test
= intel_translate_compare_func(func
);
358 DBG("%s\n", __FUNCTION__
);
360 dw
= i915
->state
.Ctx
[I915_CTXREG_LIS6
];
361 dw
&= ~S6_DEPTH_TEST_FUNC_MASK
;
362 dw
|= test
<< S6_DEPTH_TEST_FUNC_SHIFT
;
363 if (dw
!= i915
->state
.Ctx
[I915_CTXREG_LIS6
]) {
364 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
365 i915
->state
.Ctx
[I915_CTXREG_LIS6
] = dw
;
370 i915DepthMask(struct gl_context
* ctx
, GLboolean flag
)
372 struct i915_context
*i915
= I915_CONTEXT(ctx
);
375 DBG("%s flag (%d)\n", __FUNCTION__
, flag
);
377 if (!ctx
->DrawBuffer
|| !ctx
->DrawBuffer
->Visual
.depthBits
)
380 dw
= i915
->state
.Ctx
[I915_CTXREG_LIS6
];
381 if (flag
&& ctx
->Depth
.Test
)
382 dw
|= S6_DEPTH_WRITE_ENABLE
;
384 dw
&= ~S6_DEPTH_WRITE_ENABLE
;
385 if (dw
!= i915
->state
.Ctx
[I915_CTXREG_LIS6
]) {
386 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
387 i915
->state
.Ctx
[I915_CTXREG_LIS6
] = dw
;
394 * Update the viewport transformation matrix. Depends on:
395 * - viewport pos/size
397 * - window pos/size or FBO size
400 intelCalcViewport(struct gl_context
* ctx
)
402 struct intel_context
*intel
= intel_context(ctx
);
404 if (_mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
405 _math_matrix_viewport(&intel
->ViewportMatrix
,
407 ctx
->DrawBuffer
->Height
- ctx
->Viewport
.Y
,
409 -ctx
->Viewport
.Height
,
414 _math_matrix_viewport(&intel
->ViewportMatrix
,
418 ctx
->Viewport
.Height
,
426 /** Called from ctx->Driver.Viewport() */
428 i915Viewport(struct gl_context
* ctx
,
429 GLint x
, GLint y
, GLsizei width
, GLsizei height
)
431 intelCalcViewport(ctx
);
435 /** Called from ctx->Driver.DepthRange() */
437 i915DepthRange(struct gl_context
* ctx
, GLclampd nearval
, GLclampd farval
)
439 intelCalcViewport(ctx
);
443 /* =============================================================
446 * The i915 supports a 4x4 stipple natively, GL wants 32x32.
447 * Fortunately stipple is usually a repeating pattern.
450 i915PolygonStipple(struct gl_context
* ctx
, const GLubyte
* mask
)
452 struct i915_context
*i915
= I915_CONTEXT(ctx
);
456 int active
= (ctx
->Polygon
.StippleFlag
&&
457 i915
->intel
.reduced_primitive
== GL_TRIANGLES
);
461 I915_STATECHANGE(i915
, I915_UPLOAD_STIPPLE
);
462 i915
->state
.Stipple
[I915_STPREG_ST1
] &= ~ST1_ENABLE
;
465 /* Use the already unpacked stipple data from the context rather than the
466 * uninterpreted mask passed in.
468 mask
= (const GLubyte
*)ctx
->PolygonStipple
;
471 p
[0] = mask
[12] & 0xf;
473 p
[1] = mask
[8] & 0xf;
475 p
[2] = mask
[4] & 0xf;
477 p
[3] = mask
[0] & 0xf;
480 for (k
= 0; k
< 8; k
++)
481 for (j
= 3; j
>= 0; j
--)
482 for (i
= 0; i
< 4; i
++, m
++)
484 i915
->intel
.hw_stipple
= 0;
488 newMask
= (((p
[0] & 0xf) << 0) |
489 ((p
[1] & 0xf) << 4) |
490 ((p
[2] & 0xf) << 8) | ((p
[3] & 0xf) << 12));
493 if (newMask
== 0xffff || newMask
== 0x0) {
494 /* this is needed to make conform pass */
495 i915
->intel
.hw_stipple
= 0;
499 i915
->state
.Stipple
[I915_STPREG_ST1
] &= ~0xffff;
500 i915
->state
.Stipple
[I915_STPREG_ST1
] |= newMask
;
501 i915
->intel
.hw_stipple
= 1;
504 i915
->state
.Stipple
[I915_STPREG_ST1
] |= ST1_ENABLE
;
508 /* =============================================================
512 i915Scissor(struct gl_context
* ctx
, GLint x
, GLint y
, GLsizei w
, GLsizei h
)
514 struct i915_context
*i915
= I915_CONTEXT(ctx
);
517 if (!ctx
->DrawBuffer
)
520 DBG("%s %d,%d %dx%d\n", __FUNCTION__
, x
, y
, w
, h
);
522 if (_mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
524 y1
= ctx
->DrawBuffer
->Height
- (y
+ h
);
527 DBG("%s %d..%d,%d..%d (inverted)\n", __FUNCTION__
, x1
, x2
, y1
, y2
);
530 /* FBO - not inverted
536 DBG("%s %d..%d,%d..%d (not inverted)\n", __FUNCTION__
, x1
, x2
, y1
, y2
);
539 x1
= CLAMP(x1
, 0, ctx
->DrawBuffer
->Width
- 1);
540 y1
= CLAMP(y1
, 0, ctx
->DrawBuffer
->Height
- 1);
541 x2
= CLAMP(x2
, 0, ctx
->DrawBuffer
->Width
- 1);
542 y2
= CLAMP(y2
, 0, ctx
->DrawBuffer
->Height
- 1);
544 DBG("%s %d..%d,%d..%d (clamped)\n", __FUNCTION__
, x1
, x2
, y1
, y2
);
546 I915_STATECHANGE(i915
, I915_UPLOAD_BUFFERS
);
547 i915
->state
.Buffer
[I915_DESTREG_SR1
] = (y1
<< 16) | (x1
& 0xffff);
548 i915
->state
.Buffer
[I915_DESTREG_SR2
] = (y2
<< 16) | (x2
& 0xffff);
552 i915LogicOp(struct gl_context
* ctx
, GLenum opcode
)
554 struct i915_context
*i915
= I915_CONTEXT(ctx
);
555 int tmp
= intel_translate_logic_op(opcode
);
557 DBG("%s\n", __FUNCTION__
);
559 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
560 i915
->state
.Ctx
[I915_CTXREG_STATE4
] &= ~LOGICOP_MASK
;
561 i915
->state
.Ctx
[I915_CTXREG_STATE4
] |= LOGIC_OP_FUNC(tmp
);
567 i915CullFaceFrontFace(struct gl_context
* ctx
, GLenum unused
)
569 struct i915_context
*i915
= I915_CONTEXT(ctx
);
572 DBG("%s %d\n", __FUNCTION__
,
573 ctx
->DrawBuffer
? ctx
->DrawBuffer
->Name
: 0);
575 if (!ctx
->Polygon
.CullFlag
) {
576 mode
= S4_CULLMODE_NONE
;
578 else if (ctx
->Polygon
.CullFaceMode
!= GL_FRONT_AND_BACK
) {
579 mode
= S4_CULLMODE_CW
;
581 if (ctx
->DrawBuffer
&& _mesa_is_user_fbo(ctx
->DrawBuffer
))
582 mode
^= (S4_CULLMODE_CW
^ S4_CULLMODE_CCW
);
583 if (ctx
->Polygon
.CullFaceMode
== GL_FRONT
)
584 mode
^= (S4_CULLMODE_CW
^ S4_CULLMODE_CCW
);
585 if (ctx
->Polygon
.FrontFace
!= GL_CCW
)
586 mode
^= (S4_CULLMODE_CW
^ S4_CULLMODE_CCW
);
589 mode
= S4_CULLMODE_BOTH
;
592 dw
= i915
->state
.Ctx
[I915_CTXREG_LIS4
];
593 dw
&= ~S4_CULLMODE_MASK
;
595 if (dw
!= i915
->state
.Ctx
[I915_CTXREG_LIS4
]) {
596 i915
->state
.Ctx
[I915_CTXREG_LIS4
] = dw
;
597 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
602 i915LineWidth(struct gl_context
* ctx
, GLfloat widthf
)
604 struct i915_context
*i915
= I915_CONTEXT(ctx
);
605 int lis4
= i915
->state
.Ctx
[I915_CTXREG_LIS4
] & ~S4_LINE_WIDTH_MASK
;
608 DBG("%s\n", __FUNCTION__
);
610 width
= (int) (widthf
* 2);
611 width
= CLAMP(width
, 1, 0xf);
612 lis4
|= width
<< S4_LINE_WIDTH_SHIFT
;
614 if (lis4
!= i915
->state
.Ctx
[I915_CTXREG_LIS4
]) {
615 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
616 i915
->state
.Ctx
[I915_CTXREG_LIS4
] = lis4
;
621 i915PointSize(struct gl_context
* ctx
, GLfloat size
)
623 struct i915_context
*i915
= I915_CONTEXT(ctx
);
624 int lis4
= i915
->state
.Ctx
[I915_CTXREG_LIS4
] & ~S4_POINT_WIDTH_MASK
;
625 GLint point_size
= (int) round(size
);
627 DBG("%s\n", __FUNCTION__
);
629 point_size
= CLAMP(point_size
, 1, 255);
630 lis4
|= point_size
<< S4_POINT_WIDTH_SHIFT
;
632 if (lis4
!= i915
->state
.Ctx
[I915_CTXREG_LIS4
]) {
633 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
634 i915
->state
.Ctx
[I915_CTXREG_LIS4
] = lis4
;
640 i915PointParameterfv(struct gl_context
* ctx
, GLenum pname
, const GLfloat
*params
)
642 struct i915_context
*i915
= I915_CONTEXT(ctx
);
645 case GL_POINT_SPRITE_COORD_ORIGIN
:
646 /* This could be supported, but it would require modifying the fragment
647 * program to invert the y component of the texture coordinate by
648 * inserting a 'SUB tc.y, {1.0}.xxxx, tc' instruction.
650 FALLBACK(&i915
->intel
, I915_FALLBACK_POINT_SPRITE_COORD_ORIGIN
,
651 (params
[0] != GL_UPPER_LEFT
));
657 i915_update_sprite_point_enable(struct gl_context
*ctx
)
659 struct intel_context
*intel
= intel_context(ctx
);
661 struct i915_fragment_program
*p
=
662 (struct i915_fragment_program
*) ctx
->FragmentProgram
._Current
;
663 const GLbitfield64 inputsRead
= p
->FragProg
.Base
.InputsRead
;
664 struct i915_context
*i915
= i915_context(ctx
);
665 GLuint s4
= i915
->state
.Ctx
[I915_CTXREG_LIS4
] & ~S4_VFMT_MASK
;
667 GLuint coord_replace_bits
= 0x0;
668 GLuint tex_coord_unit_bits
= 0x0;
670 for (i
= 0; i
< ctx
->Const
.MaxTextureCoordUnits
; i
++) {
672 if (ctx
->Point
.CoordReplace
[i
] && ctx
->Point
.PointSprite
)
673 coord_replace_bits
|= (1 << i
);
674 if (inputsRead
& VARYING_BIT_TEX(i
))
675 tex_coord_unit_bits
|= (1 << i
);
679 * Here we can't enable the SPRITE_POINT_ENABLE bit when the mis-match
680 * of tex_coord_unit_bits and coord_replace_bits, or this will make all
681 * the other non-point-sprite coords(like varying inputs, as we now use
682 * tex coord to implement varying inputs) be replaced to value (0, 0)-(1, 1).
684 * Thus, do fallback when needed.
686 FALLBACK(intel
, I915_FALLBACK_COORD_REPLACE
,
687 coord_replace_bits
&& coord_replace_bits
!= tex_coord_unit_bits
);
689 s4
&= ~S4_SPRITE_POINT_ENABLE
;
690 s4
|= (coord_replace_bits
&& coord_replace_bits
== tex_coord_unit_bits
) ?
691 S4_SPRITE_POINT_ENABLE
: 0;
692 if (s4
!= i915
->state
.Ctx
[I915_CTXREG_LIS4
]) {
693 i915
->state
.Ctx
[I915_CTXREG_LIS4
] = s4
;
694 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
699 /* =============================================================
704 i915ColorMask(struct gl_context
* ctx
,
705 GLboolean r
, GLboolean g
, GLboolean b
, GLboolean a
)
707 struct i915_context
*i915
= I915_CONTEXT(ctx
);
708 GLuint tmp
= i915
->state
.Ctx
[I915_CTXREG_LIS5
] & ~S5_WRITEDISABLE_MASK
;
710 DBG("%s r(%d) g(%d) b(%d) a(%d)\n", __FUNCTION__
, r
, g
, b
,
714 tmp
|= S5_WRITEDISABLE_RED
;
716 tmp
|= S5_WRITEDISABLE_GREEN
;
718 tmp
|= S5_WRITEDISABLE_BLUE
;
720 tmp
|= S5_WRITEDISABLE_ALPHA
;
722 if (tmp
!= i915
->state
.Ctx
[I915_CTXREG_LIS5
]) {
723 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
724 i915
->state
.Ctx
[I915_CTXREG_LIS5
] = tmp
;
729 update_specular(struct gl_context
* ctx
)
731 /* A hack to trigger the rebuild of the fragment program.
733 intel_context(ctx
)->NewGLState
|= _NEW_TEXTURE
;
737 i915LightModelfv(struct gl_context
* ctx
, GLenum pname
, const GLfloat
* param
)
739 DBG("%s\n", __FUNCTION__
);
741 if (pname
== GL_LIGHT_MODEL_COLOR_CONTROL
) {
742 update_specular(ctx
);
747 i915ShadeModel(struct gl_context
* ctx
, GLenum mode
)
749 struct i915_context
*i915
= I915_CONTEXT(ctx
);
750 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
752 if (mode
== GL_SMOOTH
) {
753 i915
->state
.Ctx
[I915_CTXREG_LIS4
] &= ~(S4_FLATSHADE_ALPHA
|
755 S4_FLATSHADE_SPECULAR
);
758 i915
->state
.Ctx
[I915_CTXREG_LIS4
] |= (S4_FLATSHADE_ALPHA
|
760 S4_FLATSHADE_SPECULAR
);
764 /* =============================================================
767 * This empty function remains because _mesa_init_driver_state calls
768 * dd_function_table::Fogfv unconditionally. We have to have some function
769 * there so that it doesn't try to call a NULL pointer.
772 i915Fogfv(struct gl_context
* ctx
, GLenum pname
, const GLfloat
* param
)
779 /* =============================================================
783 i915Enable(struct gl_context
* ctx
, GLenum cap
, GLboolean state
)
785 struct i915_context
*i915
= I915_CONTEXT(ctx
);
794 update_specular(ctx
);
798 dw
= i915
->state
.Ctx
[I915_CTXREG_LIS6
];
800 dw
|= S6_ALPHA_TEST_ENABLE
;
802 dw
&= ~S6_ALPHA_TEST_ENABLE
;
803 if (dw
!= i915
->state
.Ctx
[I915_CTXREG_LIS6
]) {
804 i915
->state
.Ctx
[I915_CTXREG_LIS6
] = dw
;
805 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
810 i915EvalLogicOpBlendState(ctx
);
813 case GL_COLOR_LOGIC_OP
:
814 i915EvalLogicOpBlendState(ctx
);
816 /* Logicop doesn't seem to work at 16bpp:
818 if (ctx
->Visual
.rgbBits
== 16)
819 FALLBACK(&i915
->intel
, I915_FALLBACK_LOGICOP
, state
);
822 case GL_FRAGMENT_PROGRAM_ARB
:
826 dw
= i915
->state
.Ctx
[I915_CTXREG_LIS5
];
828 dw
|= S5_COLOR_DITHER_ENABLE
;
830 dw
&= ~S5_COLOR_DITHER_ENABLE
;
831 if (dw
!= i915
->state
.Ctx
[I915_CTXREG_LIS5
]) {
832 i915
->state
.Ctx
[I915_CTXREG_LIS5
] = dw
;
833 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
838 dw
= i915
->state
.Ctx
[I915_CTXREG_LIS6
];
840 if (!ctx
->DrawBuffer
|| !ctx
->DrawBuffer
->Visual
.depthBits
)
844 dw
|= S6_DEPTH_TEST_ENABLE
;
846 dw
&= ~S6_DEPTH_TEST_ENABLE
;
847 if (dw
!= i915
->state
.Ctx
[I915_CTXREG_LIS6
]) {
848 i915
->state
.Ctx
[I915_CTXREG_LIS6
] = dw
;
849 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
852 i915DepthMask(ctx
, ctx
->Depth
.Mask
);
855 case GL_SCISSOR_TEST
:
856 I915_STATECHANGE(i915
, I915_UPLOAD_BUFFERS
);
858 i915
->state
.Buffer
[I915_DESTREG_SENABLE
] =
859 (_3DSTATE_SCISSOR_ENABLE_CMD
| ENABLE_SCISSOR_RECT
);
861 i915
->state
.Buffer
[I915_DESTREG_SENABLE
] =
862 (_3DSTATE_SCISSOR_ENABLE_CMD
| DISABLE_SCISSOR_RECT
);
866 dw
= i915
->state
.Ctx
[I915_CTXREG_LIS4
];
868 dw
|= S4_LINE_ANTIALIAS_ENABLE
;
870 dw
&= ~S4_LINE_ANTIALIAS_ENABLE
;
871 if (dw
!= i915
->state
.Ctx
[I915_CTXREG_LIS4
]) {
872 i915
->state
.Ctx
[I915_CTXREG_LIS4
] = dw
;
873 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
878 i915CullFaceFrontFace(ctx
, 0);
881 case GL_STENCIL_TEST
:
882 if (!ctx
->DrawBuffer
|| !ctx
->DrawBuffer
->Visual
.stencilBits
)
885 dw
= i915
->state
.Ctx
[I915_CTXREG_LIS5
];
887 dw
|= (S5_STENCIL_TEST_ENABLE
| S5_STENCIL_WRITE_ENABLE
);
889 dw
&= ~(S5_STENCIL_TEST_ENABLE
| S5_STENCIL_WRITE_ENABLE
);
890 if (dw
!= i915
->state
.Ctx
[I915_CTXREG_LIS5
]) {
891 i915
->state
.Ctx
[I915_CTXREG_LIS5
] = dw
;
892 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
896 case GL_POLYGON_STIPPLE
:
897 /* The stipple command worked on my 855GM box, but not my 845G.
898 * I'll do more testing later to find out exactly which hardware
899 * supports it. Disabled for now.
901 if (i915
->intel
.hw_stipple
&&
902 i915
->intel
.reduced_primitive
== GL_TRIANGLES
) {
903 I915_STATECHANGE(i915
, I915_UPLOAD_STIPPLE
);
905 i915
->state
.Stipple
[I915_STPREG_ST1
] |= ST1_ENABLE
;
907 i915
->state
.Stipple
[I915_STPREG_ST1
] &= ~ST1_ENABLE
;
911 case GL_POLYGON_SMOOTH
:
914 case GL_POINT_SPRITE
:
915 /* Handle it at i915_update_sprite_point_enable () */
918 case GL_POINT_SMOOTH
:
928 i915_init_packets(struct i915_context
*i915
)
931 memset(&i915
->state
, 0, sizeof(i915
->state
));
935 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
936 I915_STATECHANGE(i915
, I915_UPLOAD_BLEND
);
937 /* Probably don't want to upload all this stuff every time one
940 i915
->state
.Ctx
[I915_CTXREG_LI
] = (_3DSTATE_LOAD_STATE_IMMEDIATE_1
|
943 I1_LOAD_S(5) | I1_LOAD_S(6) | (3));
944 i915
->state
.Ctx
[I915_CTXREG_LIS2
] = 0;
945 i915
->state
.Ctx
[I915_CTXREG_LIS4
] = 0;
946 i915
->state
.Ctx
[I915_CTXREG_LIS5
] = 0;
948 if (i915
->intel
.ctx
.Visual
.rgbBits
== 16)
949 i915
->state
.Ctx
[I915_CTXREG_LIS5
] |= S5_COLOR_DITHER_ENABLE
;
952 i915
->state
.Ctx
[I915_CTXREG_LIS6
] = (S6_COLOR_WRITE_ENABLE
|
953 (2 << S6_TRISTRIP_PV_SHIFT
));
955 i915
->state
.Ctx
[I915_CTXREG_STATE4
] = (_3DSTATE_MODES_4_CMD
|
956 ENABLE_LOGIC_OP_FUNC
|
957 LOGIC_OP_FUNC(LOGICOP_COPY
) |
958 ENABLE_STENCIL_TEST_MASK
|
959 STENCIL_TEST_MASK(0xff) |
960 ENABLE_STENCIL_WRITE_MASK
|
961 STENCIL_WRITE_MASK(0xff));
963 i915
->state
.Blend
[I915_BLENDREG_IAB
] =
964 (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD
| IAB_MODIFY_ENABLE
|
965 IAB_MODIFY_FUNC
| IAB_MODIFY_SRC_FACTOR
| IAB_MODIFY_DST_FACTOR
);
967 i915
->state
.Blend
[I915_BLENDREG_BLENDCOLOR0
] =
968 _3DSTATE_CONST_BLEND_COLOR_CMD
;
969 i915
->state
.Blend
[I915_BLENDREG_BLENDCOLOR1
] = 0;
971 i915
->state
.Ctx
[I915_CTXREG_BF_STENCIL_MASKS
] =
972 _3DSTATE_BACKFACE_STENCIL_MASKS
|
973 BFM_ENABLE_STENCIL_TEST_MASK
|
974 BFM_ENABLE_STENCIL_WRITE_MASK
|
975 (0xff << BFM_STENCIL_WRITE_MASK_SHIFT
) |
976 (0xff << BFM_STENCIL_TEST_MASK_SHIFT
);
977 i915
->state
.Ctx
[I915_CTXREG_BF_STENCIL_OPS
] =
978 _3DSTATE_BACKFACE_STENCIL_OPS
|
979 BFO_ENABLE_STENCIL_REF
|
980 BFO_ENABLE_STENCIL_FUNCS
|
981 BFO_ENABLE_STENCIL_TWO_SIDE
;
985 I915_STATECHANGE(i915
, I915_UPLOAD_STIPPLE
);
986 i915
->state
.Stipple
[I915_STPREG_ST0
] = _3DSTATE_STIPPLE
;
990 i915
->state
.Buffer
[I915_DESTREG_DV0
] = _3DSTATE_DST_BUF_VARS_CMD
;
993 i915
->state
.Buffer
[I915_DESTREG_SENABLE
] =
994 (_3DSTATE_SCISSOR_ENABLE_CMD
| DISABLE_SCISSOR_RECT
);
995 i915
->state
.Buffer
[I915_DESTREG_SR0
] = _3DSTATE_SCISSOR_RECT_0_CMD
;
996 i915
->state
.Buffer
[I915_DESTREG_SR1
] = 0;
997 i915
->state
.Buffer
[I915_DESTREG_SR2
] = 0;
1000 i915
->state
.RasterRules
[I915_RASTER_RULES
] = _3DSTATE_RASTER_RULES_CMD
|
1001 ENABLE_POINT_RASTER_RULE
|
1002 OGL_POINT_RASTER_RULE
|
1003 ENABLE_LINE_STRIP_PROVOKE_VRTX
|
1004 ENABLE_TRI_FAN_PROVOKE_VRTX
|
1005 LINE_STRIP_PROVOKE_VRTX(1) |
1006 TRI_FAN_PROVOKE_VRTX(2) | ENABLE_TEXKILL_3D_4D
| TEXKILL_4D
;
1010 I915_STATECHANGE(i915
, I915_UPLOAD_DEFAULTS
);
1011 i915
->state
.Default
[I915_DEFREG_C0
] = _3DSTATE_DEFAULT_DIFFUSE
;
1012 i915
->state
.Default
[I915_DEFREG_C1
] = 0;
1013 i915
->state
.Default
[I915_DEFREG_S0
] = _3DSTATE_DEFAULT_SPECULAR
;
1014 i915
->state
.Default
[I915_DEFREG_S1
] = 0;
1015 i915
->state
.Default
[I915_DEFREG_Z0
] = _3DSTATE_DEFAULT_Z
;
1016 i915
->state
.Default
[I915_DEFREG_Z1
] = 0;
1021 /* These will be emitted every at the head of every buffer, unless
1022 * we get hardware contexts working.
1024 i915
->state
.active
= (I915_UPLOAD_PROGRAM
|
1025 I915_UPLOAD_STIPPLE
|
1028 I915_UPLOAD_BUFFERS
|
1029 I915_UPLOAD_INVARIENT
|
1030 I915_UPLOAD_RASTER_RULES
);
1034 i915_update_provoking_vertex(struct gl_context
* ctx
)
1036 struct i915_context
*i915
= I915_CONTEXT(ctx
);
1038 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
1039 i915
->state
.Ctx
[I915_CTXREG_LIS6
] &= ~(S6_TRISTRIP_PV_MASK
);
1041 I915_STATECHANGE(i915
, I915_UPLOAD_RASTER_RULES
);
1042 i915
->state
.RasterRules
[I915_RASTER_RULES
] &= ~(LINE_STRIP_PROVOKE_VRTX_MASK
|
1043 TRI_FAN_PROVOKE_VRTX_MASK
);
1046 if (ctx
->Light
.ProvokingVertex
== GL_LAST_VERTEX_CONVENTION
) {
1047 i915
->state
.RasterRules
[I915_RASTER_RULES
] |= (LINE_STRIP_PROVOKE_VRTX(1) |
1048 TRI_FAN_PROVOKE_VRTX(2));
1049 i915
->state
.Ctx
[I915_CTXREG_LIS6
] |= (2 << S6_TRISTRIP_PV_SHIFT
);
1051 i915
->state
.RasterRules
[I915_RASTER_RULES
] |= (LINE_STRIP_PROVOKE_VRTX(0) |
1052 TRI_FAN_PROVOKE_VRTX(1));
1053 i915
->state
.Ctx
[I915_CTXREG_LIS6
] |= (0 << S6_TRISTRIP_PV_SHIFT
);
1057 /* Fallback to swrast for select and feedback.
1060 i915RenderMode(struct gl_context
*ctx
, GLenum mode
)
1062 struct intel_context
*intel
= intel_context(ctx
);
1063 FALLBACK(intel
, INTEL_FALLBACK_RENDERMODE
, (mode
!= GL_RENDER
));
1067 i915InitStateFunctions(struct dd_function_table
*functions
)
1069 functions
->AlphaFunc
= i915AlphaFunc
;
1070 functions
->BlendColor
= i915BlendColor
;
1071 functions
->BlendEquationSeparate
= i915BlendEquationSeparate
;
1072 functions
->BlendFuncSeparate
= i915BlendFuncSeparate
;
1073 functions
->ColorMask
= i915ColorMask
;
1074 functions
->CullFace
= i915CullFaceFrontFace
;
1075 functions
->DepthFunc
= i915DepthFunc
;
1076 functions
->DepthMask
= i915DepthMask
;
1077 functions
->Enable
= i915Enable
;
1078 functions
->Fogfv
= i915Fogfv
;
1079 functions
->FrontFace
= i915CullFaceFrontFace
;
1080 functions
->LightModelfv
= i915LightModelfv
;
1081 functions
->LineWidth
= i915LineWidth
;
1082 functions
->LogicOpcode
= i915LogicOp
;
1083 functions
->PointSize
= i915PointSize
;
1084 functions
->PointParameterfv
= i915PointParameterfv
;
1085 functions
->PolygonStipple
= i915PolygonStipple
;
1086 functions
->RenderMode
= i915RenderMode
;
1087 functions
->Scissor
= i915Scissor
;
1088 functions
->ShadeModel
= i915ShadeModel
;
1089 functions
->StencilFuncSeparate
= i915StencilFuncSeparate
;
1090 functions
->StencilMaskSeparate
= i915StencilMaskSeparate
;
1091 functions
->StencilOpSeparate
= i915StencilOpSeparate
;
1092 functions
->DepthRange
= i915DepthRange
;
1093 functions
->Viewport
= i915Viewport
;
1098 i915InitState(struct i915_context
*i915
)
1100 struct gl_context
*ctx
= &i915
->intel
.ctx
;
1102 i915_init_packets(i915
);
1104 _mesa_init_driver_state(ctx
);