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"
35 #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"
45 #include "i915_context.h"
48 #define FILE_DEBUG_FLAG DEBUG_STATE
51 i915StencilFuncSeparate(GLcontext
* ctx
, GLenum face
, GLenum func
, GLint ref
,
54 struct i915_context
*i915
= I915_CONTEXT(ctx
);
55 int test
= intel_translate_compare_func(func
);
59 DBG("%s : func: %s, ref : 0x%x, mask: 0x%x\n", __FUNCTION__
,
60 _mesa_lookup_enum_by_nr(func
), ref
, mask
);
63 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
64 i915
->state
.Ctx
[I915_CTXREG_STATE4
] &= ~MODE4_ENABLE_STENCIL_TEST_MASK
;
65 i915
->state
.Ctx
[I915_CTXREG_STATE4
] |= (ENABLE_STENCIL_TEST_MASK
|
66 STENCIL_TEST_MASK(mask
));
68 i915
->state
.Ctx
[I915_CTXREG_LIS5
] &= ~(S5_STENCIL_REF_MASK
|
69 S5_STENCIL_TEST_FUNC_MASK
);
71 i915
->state
.Ctx
[I915_CTXREG_LIS5
] |= ((ref
<< S5_STENCIL_REF_SHIFT
) |
73 S5_STENCIL_TEST_FUNC_SHIFT
));
77 i915StencilMaskSeparate(GLcontext
* ctx
, GLenum face
, GLuint mask
)
79 struct i915_context
*i915
= I915_CONTEXT(ctx
);
81 DBG("%s : mask 0x%x\n", __FUNCTION__
, mask
);
85 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
86 i915
->state
.Ctx
[I915_CTXREG_STATE4
] &= ~MODE4_ENABLE_STENCIL_WRITE_MASK
;
87 i915
->state
.Ctx
[I915_CTXREG_STATE4
] |= (ENABLE_STENCIL_WRITE_MASK
|
88 STENCIL_WRITE_MASK(mask
));
93 i915StencilOpSeparate(GLcontext
* ctx
, GLenum face
, GLenum fail
, GLenum zfail
,
96 struct i915_context
*i915
= I915_CONTEXT(ctx
);
97 int fop
= intel_translate_stencil_op(fail
);
98 int dfop
= intel_translate_stencil_op(zfail
);
99 int dpop
= intel_translate_stencil_op(zpass
);
102 DBG("%s: fail : %s, zfail: %s, zpass : %s\n", __FUNCTION__
,
103 _mesa_lookup_enum_by_nr(fail
),
104 _mesa_lookup_enum_by_nr(zfail
), _mesa_lookup_enum_by_nr(zpass
));
106 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
108 i915
->state
.Ctx
[I915_CTXREG_LIS5
] &= ~(S5_STENCIL_FAIL_MASK
|
109 S5_STENCIL_PASS_Z_FAIL_MASK
|
110 S5_STENCIL_PASS_Z_PASS_MASK
);
112 i915
->state
.Ctx
[I915_CTXREG_LIS5
] |= ((fop
<< S5_STENCIL_FAIL_SHIFT
) |
114 S5_STENCIL_PASS_Z_FAIL_SHIFT
) |
116 S5_STENCIL_PASS_Z_PASS_SHIFT
));
120 i915AlphaFunc(GLcontext
* ctx
, GLenum func
, GLfloat ref
)
122 struct i915_context
*i915
= I915_CONTEXT(ctx
);
123 int test
= intel_translate_compare_func(func
);
126 UNCLAMPED_FLOAT_TO_UBYTE(refByte
, ref
);
128 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
129 i915
->state
.Ctx
[I915_CTXREG_LIS6
] &= ~(S6_ALPHA_TEST_FUNC_MASK
|
131 i915
->state
.Ctx
[I915_CTXREG_LIS6
] |= ((test
<< S6_ALPHA_TEST_FUNC_SHIFT
) |
132 (((GLuint
) refByte
) <<
133 S6_ALPHA_REF_SHIFT
));
136 /* This function makes sure that the proper enables are
137 * set for LogicOp, Independant Alpha Blend, and Blending.
138 * It needs to be called from numerous places where we
139 * could change the LogicOp or Independant Alpha Blend without subsequent
143 i915EvalLogicOpBlendState(GLcontext
* ctx
)
145 struct i915_context
*i915
= I915_CONTEXT(ctx
);
147 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
149 if (RGBA_LOGICOP_ENABLED(ctx
)) {
150 i915
->state
.Ctx
[I915_CTXREG_LIS5
] |= S5_LOGICOP_ENABLE
;
151 i915
->state
.Ctx
[I915_CTXREG_LIS6
] &= ~S6_CBUF_BLEND_ENABLE
;
154 i915
->state
.Ctx
[I915_CTXREG_LIS5
] &= ~S5_LOGICOP_ENABLE
;
156 if (ctx
->Color
.BlendEnabled
) {
157 i915
->state
.Ctx
[I915_CTXREG_LIS6
] |= S6_CBUF_BLEND_ENABLE
;
160 i915
->state
.Ctx
[I915_CTXREG_LIS6
] &= ~S6_CBUF_BLEND_ENABLE
;
166 i915BlendColor(GLcontext
* ctx
, const GLfloat color
[4])
168 struct i915_context
*i915
= I915_CONTEXT(ctx
);
171 DBG("%s\n", __FUNCTION__
);
173 UNCLAMPED_FLOAT_TO_UBYTE(r
, color
[RCOMP
]);
174 UNCLAMPED_FLOAT_TO_UBYTE(g
, color
[GCOMP
]);
175 UNCLAMPED_FLOAT_TO_UBYTE(b
, color
[BCOMP
]);
176 UNCLAMPED_FLOAT_TO_UBYTE(a
, color
[ACOMP
]);
178 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
179 i915
->state
.Ctx
[I915_CTXREG_BLENDCOLOR1
] =
180 (a
<< 24) | (r
<< 16) | (g
<< 8) | b
;
184 #define DST_BLND_FACT(f) ((f)<<S6_CBUF_DST_BLEND_FACT_SHIFT)
185 #define SRC_BLND_FACT(f) ((f)<<S6_CBUF_SRC_BLEND_FACT_SHIFT)
186 #define DST_ABLND_FACT(f) ((f)<<IAB_DST_FACTOR_SHIFT)
187 #define SRC_ABLND_FACT(f) ((f)<<IAB_SRC_FACTOR_SHIFT)
192 translate_blend_equation(GLenum mode
)
196 return BLENDFUNC_ADD
;
198 return BLENDFUNC_MIN
;
200 return BLENDFUNC_MAX
;
201 case GL_FUNC_SUBTRACT
:
202 return BLENDFUNC_SUBTRACT
;
203 case GL_FUNC_REVERSE_SUBTRACT
:
204 return BLENDFUNC_REVERSE_SUBTRACT
;
211 i915UpdateBlendState(GLcontext
* ctx
)
213 struct i915_context
*i915
= I915_CONTEXT(ctx
);
214 GLuint iab
= (i915
->state
.Ctx
[I915_CTXREG_IAB
] &
215 ~(IAB_SRC_FACTOR_MASK
|
216 IAB_DST_FACTOR_MASK
|
217 (BLENDFUNC_MASK
<< IAB_FUNC_SHIFT
) | IAB_ENABLE
));
219 GLuint lis6
= (i915
->state
.Ctx
[I915_CTXREG_LIS6
] &
220 ~(S6_CBUF_SRC_BLEND_FACT_MASK
|
221 S6_CBUF_DST_BLEND_FACT_MASK
| S6_CBUF_BLEND_FUNC_MASK
));
223 GLuint eqRGB
= ctx
->Color
.BlendEquationRGB
;
224 GLuint eqA
= ctx
->Color
.BlendEquationA
;
225 GLuint srcRGB
= ctx
->Color
.BlendSrcRGB
;
226 GLuint dstRGB
= ctx
->Color
.BlendDstRGB
;
227 GLuint srcA
= ctx
->Color
.BlendSrcA
;
228 GLuint dstA
= ctx
->Color
.BlendDstA
;
230 if (eqRGB
== GL_MIN
|| eqRGB
== GL_MAX
) {
231 srcRGB
= dstRGB
= GL_ONE
;
234 if (eqA
== GL_MIN
|| eqA
== GL_MAX
) {
235 srcA
= dstA
= GL_ONE
;
238 lis6
|= SRC_BLND_FACT(intel_translate_blend_factor(srcRGB
));
239 lis6
|= DST_BLND_FACT(intel_translate_blend_factor(dstRGB
));
240 lis6
|= translate_blend_equation(eqRGB
) << S6_CBUF_BLEND_FUNC_SHIFT
;
242 iab
|= SRC_ABLND_FACT(intel_translate_blend_factor(srcA
));
243 iab
|= DST_ABLND_FACT(intel_translate_blend_factor(dstA
));
244 iab
|= translate_blend_equation(eqA
) << IAB_FUNC_SHIFT
;
246 if (srcA
!= srcRGB
|| dstA
!= dstRGB
|| eqA
!= eqRGB
)
249 if (iab
!= i915
->state
.Ctx
[I915_CTXREG_IAB
] ||
250 lis6
!= i915
->state
.Ctx
[I915_CTXREG_LIS6
]) {
251 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
252 i915
->state
.Ctx
[I915_CTXREG_IAB
] = iab
;
253 i915
->state
.Ctx
[I915_CTXREG_LIS6
] = lis6
;
256 /* This will catch a logicop blend equation */
257 i915EvalLogicOpBlendState(ctx
);
262 i915BlendFuncSeparate(GLcontext
* ctx
, GLenum srcRGB
,
263 GLenum dstRGB
, GLenum srcA
, GLenum dstA
)
265 i915UpdateBlendState(ctx
);
270 i915BlendEquationSeparate(GLcontext
* ctx
, GLenum eqRGB
, GLenum eqA
)
272 i915UpdateBlendState(ctx
);
277 i915DepthFunc(GLcontext
* ctx
, GLenum func
)
279 struct i915_context
*i915
= I915_CONTEXT(ctx
);
280 int test
= intel_translate_compare_func(func
);
282 DBG("%s\n", __FUNCTION__
);
284 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
285 i915
->state
.Ctx
[I915_CTXREG_LIS6
] &= ~S6_DEPTH_TEST_FUNC_MASK
;
286 i915
->state
.Ctx
[I915_CTXREG_LIS6
] |= test
<< S6_DEPTH_TEST_FUNC_SHIFT
;
290 i915DepthMask(GLcontext
* ctx
, GLboolean flag
)
292 struct i915_context
*i915
= I915_CONTEXT(ctx
);
294 DBG("%s flag (%d)\n", __FUNCTION__
, flag
);
296 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
298 if (flag
&& ctx
->Depth
.Test
)
299 i915
->state
.Ctx
[I915_CTXREG_LIS6
] |= S6_DEPTH_WRITE_ENABLE
;
301 i915
->state
.Ctx
[I915_CTXREG_LIS6
] &= ~S6_DEPTH_WRITE_ENABLE
;
307 * Update the viewport transformation matrix. Depends on:
308 * - viewport pos/size
310 * - window pos/size or FBO size
313 intelCalcViewport(GLcontext
* ctx
)
315 struct intel_context
*intel
= intel_context(ctx
);
316 const GLfloat
*v
= ctx
->Viewport
._WindowMap
.m
;
317 const GLfloat depthScale
= 1.0F
/ ctx
->DrawBuffer
->_DepthMaxF
;
318 GLfloat
*m
= intel
->ViewportMatrix
.m
;
319 GLfloat yScale
, yBias
;
321 if (ctx
->DrawBuffer
->Name
) {
322 /* User created FBO */
323 struct intel_renderbuffer
*irb
324 = intel_renderbuffer(ctx
->DrawBuffer
->_ColorDrawBuffers
[0]);
325 if (irb
&& !irb
->RenderToTexture
) {
328 yBias
= irb
->Base
.Height
;
337 /* window buffer, y=0=top */
339 yBias
= (intel
->driDrawable
) ? intel
->driDrawable
->h
: 0.0F
;
342 m
[MAT_SX
] = v
[MAT_SX
];
343 m
[MAT_TX
] = v
[MAT_TX
];
345 m
[MAT_SY
] = v
[MAT_SY
] * yScale
;
346 m
[MAT_TY
] = v
[MAT_TY
] * yScale
+ yBias
;
348 m
[MAT_SZ
] = v
[MAT_SZ
] * depthScale
;
349 m
[MAT_TZ
] = v
[MAT_TZ
] * depthScale
;
353 /** Called from ctx->Driver.Viewport() */
355 intelViewport(GLcontext
* ctx
,
356 GLint x
, GLint y
, GLsizei width
, GLsizei height
)
358 intelCalcViewport(ctx
);
360 intel_viewport(ctx
, x
, y
, width
, height
);
364 /** Called from ctx->Driver.DepthRange() */
366 intelDepthRange(GLcontext
* ctx
, GLclampd nearval
, GLclampd farval
)
368 intelCalcViewport(ctx
);
372 /* =============================================================
375 * The i915 supports a 4x4 stipple natively, GL wants 32x32.
376 * Fortunately stipple is usually a repeating pattern.
379 i915PolygonStipple(GLcontext
* ctx
, const GLubyte
* mask
)
381 struct i915_context
*i915
= I915_CONTEXT(ctx
);
385 int active
= (ctx
->Polygon
.StippleFlag
&&
386 i915
->intel
.reduced_primitive
== GL_TRIANGLES
);
390 I915_STATECHANGE(i915
, I915_UPLOAD_STIPPLE
);
391 i915
->state
.Stipple
[I915_STPREG_ST1
] &= ~ST1_ENABLE
;
394 /* Use the already unpacked stipple data from the context rather than the
395 * uninterpreted mask passed in.
397 mask
= (const GLubyte
*)ctx
->PolygonStipple
;
400 p
[0] = mask
[12] & 0xf;
402 p
[1] = mask
[8] & 0xf;
404 p
[2] = mask
[4] & 0xf;
406 p
[3] = mask
[0] & 0xf;
409 for (k
= 0; k
< 8; k
++)
410 for (j
= 3; j
>= 0; j
--)
411 for (i
= 0; i
< 4; i
++, m
++)
413 i915
->intel
.hw_stipple
= 0;
417 newMask
= (((p
[0] & 0xf) << 0) |
418 ((p
[1] & 0xf) << 4) |
419 ((p
[2] & 0xf) << 8) | ((p
[3] & 0xf) << 12));
422 if (newMask
== 0xffff || newMask
== 0x0) {
423 /* this is needed to make conform pass */
424 i915
->intel
.hw_stipple
= 0;
428 i915
->state
.Stipple
[I915_STPREG_ST1
] &= ~0xffff;
429 i915
->state
.Stipple
[I915_STPREG_ST1
] |= newMask
;
430 i915
->intel
.hw_stipple
= 1;
433 i915
->state
.Stipple
[I915_STPREG_ST1
] |= ST1_ENABLE
;
437 /* =============================================================
441 i915Scissor(GLcontext
* ctx
, GLint x
, GLint y
, GLsizei w
, GLsizei h
)
443 struct i915_context
*i915
= I915_CONTEXT(ctx
);
446 if (!ctx
->DrawBuffer
)
449 DBG("%s %d,%d %dx%d\n", __FUNCTION__
, x
, y
, w
, h
);
451 if (ctx
->DrawBuffer
->Name
== 0) {
453 y1
= ctx
->DrawBuffer
->Height
- (y
+ h
);
456 DBG("%s %d..%d,%d..%d (inverted)\n", __FUNCTION__
, x1
, x2
, y1
, y2
);
459 /* FBO - not inverted
465 DBG("%s %d..%d,%d..%d (not inverted)\n", __FUNCTION__
, x1
, x2
, y1
, y2
);
468 x1
= CLAMP(x1
, 0, ctx
->DrawBuffer
->Width
- 1);
469 y1
= CLAMP(y1
, 0, ctx
->DrawBuffer
->Height
- 1);
470 x2
= CLAMP(x2
, 0, ctx
->DrawBuffer
->Width
- 1);
471 y2
= CLAMP(y2
, 0, ctx
->DrawBuffer
->Height
- 1);
473 DBG("%s %d..%d,%d..%d (clamped)\n", __FUNCTION__
, x1
, x2
, y1
, y2
);
475 I915_STATECHANGE(i915
, I915_UPLOAD_BUFFERS
);
476 i915
->state
.Buffer
[I915_DESTREG_SR1
] = (y1
<< 16) | (x1
& 0xffff);
477 i915
->state
.Buffer
[I915_DESTREG_SR2
] = (y2
<< 16) | (x2
& 0xffff);
481 i915LogicOp(GLcontext
* ctx
, GLenum opcode
)
483 struct i915_context
*i915
= I915_CONTEXT(ctx
);
484 int tmp
= intel_translate_logic_op(opcode
);
486 DBG("%s\n", __FUNCTION__
);
488 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
489 i915
->state
.Ctx
[I915_CTXREG_STATE4
] &= ~LOGICOP_MASK
;
490 i915
->state
.Ctx
[I915_CTXREG_STATE4
] |= LOGIC_OP_FUNC(tmp
);
496 i915CullFaceFrontFace(GLcontext
* ctx
, GLenum unused
)
498 struct i915_context
*i915
= I915_CONTEXT(ctx
);
501 DBG("%s %d\n", __FUNCTION__
,
502 ctx
->DrawBuffer
? ctx
->DrawBuffer
->Name
: 0);
504 if (!ctx
->Polygon
.CullFlag
) {
505 mode
= S4_CULLMODE_NONE
;
507 else if (ctx
->Polygon
.CullFaceMode
!= GL_FRONT_AND_BACK
) {
508 mode
= S4_CULLMODE_CW
;
510 if (ctx
->DrawBuffer
&& ctx
->DrawBuffer
->Name
!= 0)
511 mode
^= (S4_CULLMODE_CW
^ S4_CULLMODE_CCW
);
512 if (ctx
->Polygon
.CullFaceMode
== GL_FRONT
)
513 mode
^= (S4_CULLMODE_CW
^ S4_CULLMODE_CCW
);
514 if (ctx
->Polygon
.FrontFace
!= GL_CCW
)
515 mode
^= (S4_CULLMODE_CW
^ S4_CULLMODE_CCW
);
518 mode
= S4_CULLMODE_BOTH
;
521 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
522 i915
->state
.Ctx
[I915_CTXREG_LIS4
] &= ~S4_CULLMODE_MASK
;
523 i915
->state
.Ctx
[I915_CTXREG_LIS4
] |= mode
;
527 i915LineWidth(GLcontext
* ctx
, GLfloat widthf
)
529 struct i915_context
*i915
= I915_CONTEXT(ctx
);
530 int lis4
= i915
->state
.Ctx
[I915_CTXREG_LIS4
] & ~S4_LINE_WIDTH_MASK
;
533 DBG("%s\n", __FUNCTION__
);
535 width
= (int) (widthf
* 2);
536 CLAMP_SELF(width
, 1, 0xf);
537 lis4
|= width
<< S4_LINE_WIDTH_SHIFT
;
539 if (lis4
!= i915
->state
.Ctx
[I915_CTXREG_LIS4
]) {
540 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
541 i915
->state
.Ctx
[I915_CTXREG_LIS4
] = lis4
;
546 i915PointSize(GLcontext
* ctx
, GLfloat size
)
548 struct i915_context
*i915
= I915_CONTEXT(ctx
);
549 int lis4
= i915
->state
.Ctx
[I915_CTXREG_LIS4
] & ~S4_POINT_WIDTH_MASK
;
550 GLint point_size
= (int) size
;
552 DBG("%s\n", __FUNCTION__
);
554 CLAMP_SELF(point_size
, 1, 255);
555 lis4
|= point_size
<< S4_POINT_WIDTH_SHIFT
;
557 if (lis4
!= i915
->state
.Ctx
[I915_CTXREG_LIS4
]) {
558 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
559 i915
->state
.Ctx
[I915_CTXREG_LIS4
] = lis4
;
564 /* =============================================================
569 i915ColorMask(GLcontext
* ctx
,
570 GLboolean r
, GLboolean g
, GLboolean b
, GLboolean a
)
572 struct i915_context
*i915
= I915_CONTEXT(ctx
);
573 GLuint tmp
= i915
->state
.Ctx
[I915_CTXREG_LIS5
] & ~S5_WRITEDISABLE_MASK
;
575 DBG("%s r(%d) g(%d) b(%d) a(%d)\n", __FUNCTION__
, r
, g
, b
,
579 tmp
|= S5_WRITEDISABLE_RED
;
581 tmp
|= S5_WRITEDISABLE_GREEN
;
583 tmp
|= S5_WRITEDISABLE_BLUE
;
585 tmp
|= S5_WRITEDISABLE_ALPHA
;
587 if (tmp
!= i915
->state
.Ctx
[I915_CTXREG_LIS5
]) {
588 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
589 i915
->state
.Ctx
[I915_CTXREG_LIS5
] = tmp
;
594 update_specular(GLcontext
* ctx
)
596 /* A hack to trigger the rebuild of the fragment program.
598 intel_context(ctx
)->NewGLState
|= _NEW_TEXTURE
;
602 i915LightModelfv(GLcontext
* ctx
, GLenum pname
, const GLfloat
* param
)
604 DBG("%s\n", __FUNCTION__
);
606 if (pname
== GL_LIGHT_MODEL_COLOR_CONTROL
) {
607 update_specular(ctx
);
612 i915ShadeModel(GLcontext
* ctx
, GLenum mode
)
614 struct i915_context
*i915
= I915_CONTEXT(ctx
);
615 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
617 if (mode
== GL_SMOOTH
) {
618 i915
->state
.Ctx
[I915_CTXREG_LIS4
] &= ~(S4_FLATSHADE_ALPHA
|
620 S4_FLATSHADE_SPECULAR
);
623 i915
->state
.Ctx
[I915_CTXREG_LIS4
] |= (S4_FLATSHADE_ALPHA
|
625 S4_FLATSHADE_SPECULAR
);
629 /* =============================================================
633 i915_update_fog(GLcontext
* ctx
)
635 struct i915_context
*i915
= I915_CONTEXT(ctx
);
638 GLboolean try_pixel_fog
;
640 if (ctx
->FragmentProgram
._Current
) {
641 /* Pull in static fog state from program */
642 mode
= ctx
->FragmentProgram
._Current
->FogOption
;
643 enabled
= (mode
!= GL_NONE
);
647 enabled
= ctx
->Fog
.Enabled
;
648 mode
= ctx
->Fog
.Mode
;
650 /* XXX - DISABLED -- Need ortho fallback */
651 try_pixel_fog
= (ctx
->Fog
.FogCoordinateSource
== GL_FRAGMENT_DEPTH_EXT
652 && ctx
->Hint
.Fog
== GL_NICEST
);
659 i915
->vertex_fog
= I915_FOG_NONE
;
661 else if (try_pixel_fog
) {
662 I915_STATECHANGE(i915
, I915_UPLOAD_FOG
);
663 i915
->state
.Fog
[I915_FOGREG_MODE1
] &= ~FMC1_FOGFUNC_MASK
;
664 i915
->vertex_fog
= I915_FOG_PIXEL
;
668 if (ctx
->Fog
.End
<= ctx
->Fog
.Start
) {
669 /* XXX - this won't work with fragment programs. Need to
670 * either fallback or append fog instructions to end of
671 * program in the case of linear fog.
673 printf("vertex fog!\n");
674 i915
->state
.Fog
[I915_FOGREG_MODE1
] |= FMC1_FOGFUNC_VERTEX
;
675 i915
->vertex_fog
= I915_FOG_VERTEX
;
678 GLfloat c2
= 1.0 / (ctx
->Fog
.End
- ctx
->Fog
.Start
);
679 GLfloat c1
= ctx
->Fog
.End
* c2
;
681 i915
->state
.Fog
[I915_FOGREG_MODE1
] &= ~FMC1_C1_MASK
;
682 i915
->state
.Fog
[I915_FOGREG_MODE1
] |= FMC1_FOGFUNC_PIXEL_LINEAR
;
683 i915
->state
.Fog
[I915_FOGREG_MODE1
] |=
684 ((GLuint
) (c1
* FMC1_C1_ONE
)) & FMC1_C1_MASK
;
686 if (i915
->state
.Fog
[I915_FOGREG_MODE1
] & FMC1_FOGINDEX_Z
) {
687 i915
->state
.Fog
[I915_FOGREG_MODE2
]
688 = (GLuint
) (c2
* FMC2_C2_ONE
);
693 i915
->state
.Fog
[I915_FOGREG_MODE2
] = fi
.i
;
698 i915
->state
.Fog
[I915_FOGREG_MODE1
] |= FMC1_FOGFUNC_PIXEL_EXP
;
701 i915
->state
.Fog
[I915_FOGREG_MODE1
] |= FMC1_FOGFUNC_PIXEL_EXP2
;
707 else { /* if (i915->vertex_fog != I915_FOG_VERTEX) */
708 I915_STATECHANGE(i915
, I915_UPLOAD_FOG
);
709 i915
->state
.Fog
[I915_FOGREG_MODE1
] &= ~FMC1_FOGFUNC_MASK
;
710 i915
->state
.Fog
[I915_FOGREG_MODE1
] |= FMC1_FOGFUNC_VERTEX
;
711 i915
->vertex_fog
= I915_FOG_VERTEX
;
714 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
715 I915_ACTIVESTATE(i915
, I915_UPLOAD_FOG
, enabled
);
717 i915
->state
.Ctx
[I915_CTXREG_LIS5
] |= S5_FOG_ENABLE
;
719 i915
->state
.Ctx
[I915_CTXREG_LIS5
] &= ~S5_FOG_ENABLE
;
721 /* Always enable pixel fog. Vertex fog using fog coord will conflict
722 * with fog code appended onto fragment program.
724 _tnl_allow_vertex_fog( ctx
, 0 );
725 _tnl_allow_pixel_fog( ctx
, 1 );
729 i915Fogfv(GLcontext
* ctx
, GLenum pname
, const GLfloat
* param
)
731 struct i915_context
*i915
= I915_CONTEXT(ctx
);
734 case GL_FOG_COORDINATE_SOURCE_EXT
:
741 I915_STATECHANGE(i915
, I915_UPLOAD_FOG
);
743 if (i915
->state
.Fog
[I915_FOGREG_MODE1
] & FMC1_FOGINDEX_Z
) {
744 i915
->state
.Fog
[I915_FOGREG_MODE3
] =
745 (GLuint
) (ctx
->Fog
.Density
* FMC3_D_ONE
);
749 fi
.f
= ctx
->Fog
.Density
;
750 i915
->state
.Fog
[I915_FOGREG_MODE3
] = fi
.i
;
755 I915_STATECHANGE(i915
, I915_UPLOAD_FOG
);
756 i915
->state
.Fog
[I915_FOGREG_COLOR
] =
757 (_3DSTATE_FOG_COLOR_CMD
|
758 ((GLubyte
) (ctx
->Fog
.Color
[0] * 255.0F
) << 16) |
759 ((GLubyte
) (ctx
->Fog
.Color
[1] * 255.0F
) << 8) |
760 ((GLubyte
) (ctx
->Fog
.Color
[2] * 255.0F
) << 0));
769 i915Hint(GLcontext
* ctx
, GLenum target
, GLenum state
)
779 /* =============================================================
783 i915Enable(GLcontext
* ctx
, GLenum cap
, GLboolean state
)
785 struct i915_context
*i915
= I915_CONTEXT(ctx
);
793 update_specular(ctx
);
797 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
799 i915
->state
.Ctx
[I915_CTXREG_LIS6
] |= S6_ALPHA_TEST_ENABLE
;
801 i915
->state
.Ctx
[I915_CTXREG_LIS6
] &= ~S6_ALPHA_TEST_ENABLE
;
805 i915EvalLogicOpBlendState(ctx
);
808 case GL_COLOR_LOGIC_OP
:
809 i915EvalLogicOpBlendState(ctx
);
811 /* Logicop doesn't seem to work at 16bpp:
813 if (ctx
->Visual
.rgbBits
== 16)
814 FALLBACK(&i915
->intel
, I915_FALLBACK_LOGICOP
, state
);
817 case GL_FRAGMENT_PROGRAM_ARB
:
821 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
823 i915
->state
.Ctx
[I915_CTXREG_LIS5
] |= S5_COLOR_DITHER_ENABLE
;
825 i915
->state
.Ctx
[I915_CTXREG_LIS5
] &= ~S5_COLOR_DITHER_ENABLE
;
829 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
831 i915
->state
.Ctx
[I915_CTXREG_LIS6
] |= S6_DEPTH_TEST_ENABLE
;
833 i915
->state
.Ctx
[I915_CTXREG_LIS6
] &= ~S6_DEPTH_TEST_ENABLE
;
835 i915DepthMask(ctx
, ctx
->Depth
.Mask
);
838 case GL_SCISSOR_TEST
:
839 I915_STATECHANGE(i915
, I915_UPLOAD_BUFFERS
);
841 i915
->state
.Buffer
[I915_DESTREG_SENABLE
] =
842 (_3DSTATE_SCISSOR_ENABLE_CMD
| ENABLE_SCISSOR_RECT
);
844 i915
->state
.Buffer
[I915_DESTREG_SENABLE
] =
845 (_3DSTATE_SCISSOR_ENABLE_CMD
| DISABLE_SCISSOR_RECT
);
849 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
851 i915
->state
.Ctx
[I915_CTXREG_LIS4
] |= S4_LINE_ANTIALIAS_ENABLE
;
853 i915
->state
.Ctx
[I915_CTXREG_LIS4
] &= ~S4_LINE_ANTIALIAS_ENABLE
;
860 i915CullFaceFrontFace(ctx
, 0);
863 case GL_STENCIL_TEST
:
865 GLboolean hw_stencil
= GL_FALSE
;
866 if (ctx
->DrawBuffer
) {
867 struct intel_renderbuffer
*irbStencil
868 = intel_get_renderbuffer(ctx
->DrawBuffer
, BUFFER_STENCIL
);
869 hw_stencil
= (irbStencil
&& irbStencil
->region
);
872 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
874 i915
->state
.Ctx
[I915_CTXREG_LIS5
] |= (S5_STENCIL_TEST_ENABLE
|
875 S5_STENCIL_WRITE_ENABLE
);
877 i915
->state
.Ctx
[I915_CTXREG_LIS5
] &= ~(S5_STENCIL_TEST_ENABLE
|
878 S5_STENCIL_WRITE_ENABLE
);
881 FALLBACK(&i915
->intel
, I915_FALLBACK_STENCIL
, state
);
886 case GL_POLYGON_STIPPLE
:
887 /* The stipple command worked on my 855GM box, but not my 845G.
888 * I'll do more testing later to find out exactly which hardware
889 * supports it. Disabled for now.
891 if (i915
->intel
.hw_stipple
&&
892 i915
->intel
.reduced_primitive
== GL_TRIANGLES
) {
893 I915_STATECHANGE(i915
, I915_UPLOAD_STIPPLE
);
895 i915
->state
.Stipple
[I915_STPREG_ST1
] |= ST1_ENABLE
;
897 i915
->state
.Stipple
[I915_STPREG_ST1
] &= ~ST1_ENABLE
;
901 case GL_POLYGON_SMOOTH
:
904 case GL_POINT_SMOOTH
:
914 i915_init_packets(struct i915_context
*i915
)
917 memset(&i915
->state
, 0, sizeof(i915
->state
));
921 I915_STATECHANGE(i915
, I915_UPLOAD_CTX
);
922 /* Probably don't want to upload all this stuff every time one
925 i915
->state
.Ctx
[I915_CTXREG_LI
] = (_3DSTATE_LOAD_STATE_IMMEDIATE_1
|
928 I1_LOAD_S(5) | I1_LOAD_S(6) | (3));
929 i915
->state
.Ctx
[I915_CTXREG_LIS2
] = 0;
930 i915
->state
.Ctx
[I915_CTXREG_LIS4
] = 0;
931 i915
->state
.Ctx
[I915_CTXREG_LIS5
] = 0;
933 if (i915
->intel
.ctx
.Visual
.rgbBits
== 16)
934 i915
->state
.Ctx
[I915_CTXREG_LIS5
] |= S5_COLOR_DITHER_ENABLE
;
937 i915
->state
.Ctx
[I915_CTXREG_LIS6
] = (S6_COLOR_WRITE_ENABLE
|
938 (2 << S6_TRISTRIP_PV_SHIFT
));
940 i915
->state
.Ctx
[I915_CTXREG_STATE4
] = (_3DSTATE_MODES_4_CMD
|
941 ENABLE_LOGIC_OP_FUNC
|
942 LOGIC_OP_FUNC(LOGICOP_COPY
) |
943 ENABLE_STENCIL_TEST_MASK
|
944 STENCIL_TEST_MASK(0xff) |
945 ENABLE_STENCIL_WRITE_MASK
|
946 STENCIL_WRITE_MASK(0xff));
948 i915
->state
.Ctx
[I915_CTXREG_IAB
] =
949 (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD
| IAB_MODIFY_ENABLE
|
950 IAB_MODIFY_FUNC
| IAB_MODIFY_SRC_FACTOR
| IAB_MODIFY_DST_FACTOR
);
952 i915
->state
.Ctx
[I915_CTXREG_BLENDCOLOR0
] =
953 _3DSTATE_CONST_BLEND_COLOR_CMD
;
954 i915
->state
.Ctx
[I915_CTXREG_BLENDCOLOR1
] = 0;
959 I915_STATECHANGE(i915
, I915_UPLOAD_STIPPLE
);
960 i915
->state
.Stipple
[I915_STPREG_ST0
] = _3DSTATE_STIPPLE
;
965 I915_STATECHANGE(i915
, I915_UPLOAD_FOG
);
966 i915
->state
.Fog
[I915_FOGREG_MODE0
] = _3DSTATE_FOG_MODE_CMD
;
967 i915
->state
.Fog
[I915_FOGREG_MODE1
] = (FMC1_FOGFUNC_MODIFY_ENABLE
|
968 FMC1_FOGFUNC_VERTEX
|
969 FMC1_FOGINDEX_MODIFY_ENABLE
|
971 FMC1_C1_C2_MODIFY_ENABLE
|
972 FMC1_DENSITY_MODIFY_ENABLE
);
973 i915
->state
.Fog
[I915_FOGREG_COLOR
] = _3DSTATE_FOG_COLOR_CMD
;
977 i915
->state
.Buffer
[I915_DESTREG_DV0
] = _3DSTATE_DST_BUF_VARS_CMD
;
980 i915
->state
.Buffer
[I915_DESTREG_SENABLE
] =
981 (_3DSTATE_SCISSOR_ENABLE_CMD
| DISABLE_SCISSOR_RECT
);
982 i915
->state
.Buffer
[I915_DESTREG_SR0
] = _3DSTATE_SCISSOR_RECT_0_CMD
;
983 i915
->state
.Buffer
[I915_DESTREG_SR1
] = 0;
984 i915
->state
.Buffer
[I915_DESTREG_SR2
] = 0;
990 I915_STATECHANGE(i915
, I915_UPLOAD_DEFAULTS
);
991 i915
->state
.Default
[I915_DEFREG_C0
] = _3DSTATE_DEFAULT_DIFFUSE
;
992 i915
->state
.Default
[I915_DEFREG_C1
] = 0;
993 i915
->state
.Default
[I915_DEFREG_S0
] = _3DSTATE_DEFAULT_SPECULAR
;
994 i915
->state
.Default
[I915_DEFREG_S1
] = 0;
995 i915
->state
.Default
[I915_DEFREG_Z0
] = _3DSTATE_DEFAULT_Z
;
996 i915
->state
.Default
[I915_DEFREG_Z1
] = 0;
1001 /* These will be emitted every at the head of every buffer, unless
1002 * we get hardware contexts working.
1004 i915
->state
.active
= (I915_UPLOAD_PROGRAM
|
1005 I915_UPLOAD_STIPPLE
|
1007 I915_UPLOAD_BUFFERS
| I915_UPLOAD_INVARIENT
);
1011 i915InitStateFunctions(struct dd_function_table
*functions
)
1013 functions
->AlphaFunc
= i915AlphaFunc
;
1014 functions
->BlendColor
= i915BlendColor
;
1015 functions
->BlendEquationSeparate
= i915BlendEquationSeparate
;
1016 functions
->BlendFuncSeparate
= i915BlendFuncSeparate
;
1017 functions
->ColorMask
= i915ColorMask
;
1018 functions
->CullFace
= i915CullFaceFrontFace
;
1019 functions
->DepthFunc
= i915DepthFunc
;
1020 functions
->DepthMask
= i915DepthMask
;
1021 functions
->Enable
= i915Enable
;
1022 functions
->Fogfv
= i915Fogfv
;
1023 functions
->FrontFace
= i915CullFaceFrontFace
;
1024 functions
->Hint
= i915Hint
;
1025 functions
->LightModelfv
= i915LightModelfv
;
1026 functions
->LineWidth
= i915LineWidth
;
1027 functions
->LogicOpcode
= i915LogicOp
;
1028 functions
->PointSize
= i915PointSize
;
1029 functions
->PolygonStipple
= i915PolygonStipple
;
1030 functions
->Scissor
= i915Scissor
;
1031 functions
->ShadeModel
= i915ShadeModel
;
1032 functions
->StencilFuncSeparate
= i915StencilFuncSeparate
;
1033 functions
->StencilMaskSeparate
= i915StencilMaskSeparate
;
1034 functions
->StencilOpSeparate
= i915StencilOpSeparate
;
1035 functions
->DepthRange
= intelDepthRange
;
1036 functions
->Viewport
= intelViewport
;
1041 i915InitState(struct i915_context
*i915
)
1043 GLcontext
*ctx
= &i915
->intel
.ctx
;
1045 i915_init_packets(i915
);
1047 _mesa_init_driver_state(ctx
);
1049 memcpy(&i915
->initial
, &i915
->state
, sizeof(i915
->state
));
1050 i915
->current
= &i915
->state
;