1 /*
2 * Copyright (C) 2009 Francisco Jerez.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26
27 #include "nouveau_driver.h"
28 #include "nouveau_context.h"
29 #include "nouveau_util.h"
30 #include "nv_object.xml.h"
31 #include "nv04_3d.xml.h"
32 #include "nv04_driver.h"
33
34 static unsigned
get_comparison_op(unsigned op)35 get_comparison_op(unsigned op)
36 {
37 switch (op) {
38 case GL_NEVER:
39 return 0x1;
40 case GL_LESS:
41 return 0x2;
42 case GL_EQUAL:
43 return 0x3;
44 case GL_LEQUAL:
45 return 0x4;
46 case GL_GREATER:
47 return 0x5;
48 case GL_NOTEQUAL:
49 return 0x6;
50 case GL_GEQUAL:
51 return 0x7;
52 case GL_ALWAYS:
53 return 0x8;
54 default:
55 assert(0);
56 }
57 }
58
59 static unsigned
get_stencil_op(unsigned op)60 get_stencil_op(unsigned op)
61 {
62 switch (op) {
63 case GL_KEEP:
64 return 0x1;
65 case GL_ZERO:
66 return 0x2;
67 case GL_REPLACE:
68 return 0x3;
69 case GL_INCR:
70 return 0x4;
71 case GL_DECR:
72 return 0x5;
73 case GL_INVERT:
74 return 0x6;
75 case GL_INCR_WRAP:
76 return 0x7;
77 case GL_DECR_WRAP:
78 return 0x8;
79 default:
80 assert(0);
81 }
82 }
83
84 static unsigned
get_blend_func(unsigned func)85 get_blend_func(unsigned func)
86 {
87 switch (func) {
88 case GL_ZERO:
89 return 0x1;
90 case GL_ONE:
91 return 0x2;
92 case GL_SRC_COLOR:
93 return 0x3;
94 case GL_ONE_MINUS_SRC_COLOR:
95 return 0x4;
96 case GL_SRC_ALPHA:
97 return 0x5;
98 case GL_ONE_MINUS_SRC_ALPHA:
99 return 0x6;
100 case GL_DST_ALPHA:
101 return 0x7;
102 case GL_ONE_MINUS_DST_ALPHA:
103 return 0x8;
104 case GL_DST_COLOR:
105 return 0x9;
106 case GL_ONE_MINUS_DST_COLOR:
107 return 0xa;
108 case GL_SRC_ALPHA_SATURATE:
109 return 0xb;
110 default:
111 assert(0);
112 }
113 }
114
115 void
nv04_defer_control(struct gl_context * ctx,int emit)116 nv04_defer_control(struct gl_context *ctx, int emit)
117 {
118 context_dirty(ctx, CONTROL);
119 }
120
121 void
nv04_emit_control(struct gl_context * ctx,int emit)122 nv04_emit_control(struct gl_context *ctx, int emit)
123 {
124 struct nv04_context *nv04 = to_nv04_context(ctx);
125 int cull = ctx->Polygon.CullFaceMode;
126 int front = ctx->Polygon.FrontFace;
127
128 nv04->ctrl[0] = NV04_TEXTURED_TRIANGLE_CONTROL_Z_FORMAT_FIXED |
129 NV04_TEXTURED_TRIANGLE_CONTROL_ORIGIN_CORNER;
130 nv04->ctrl[1] = 0;
131 nv04->ctrl[2] = 0;
132
133 /* Dithering. */
134 if (ctx->Color.DitherFlag)
135 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_DITHER_ENABLE;
136
137 /* Cull mode. */
138 if (!ctx->Polygon.CullFlag)
139 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_NONE;
140 else if (cull == GL_FRONT_AND_BACK)
141 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_BOTH;
142 else
143 nv04->ctrl[0] |= (cull == GL_FRONT) ^ (front == GL_CCW) ?
144 NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_CW :
145 NV04_TEXTURED_TRIANGLE_CONTROL_CULL_MODE_CCW;
146
147 /* Depth test. */
148 if (ctx->Depth.Test)
149 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_Z_ENABLE;
150 if (ctx->Depth.Mask)
151 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_Z_WRITE;
152
153 nv04->ctrl[0] |= get_comparison_op(ctx->Depth.Func) << 16;
154
155 /* Alpha test. */
156 if (ctx->Color.AlphaEnabled)
157 nv04->ctrl[0] |= NV04_TEXTURED_TRIANGLE_CONTROL_ALPHA_ENABLE;
158
159 nv04->ctrl[0] |= get_comparison_op(ctx->Color.AlphaFunc) << 8 |
160 FLOAT_TO_UBYTE(ctx->Color.AlphaRef);
161
162 /* Color mask. */
163 if (ctx->Color.ColorMask[0][RCOMP])
164 nv04->ctrl[0] |= NV04_MULTITEX_TRIANGLE_CONTROL0_RED_WRITE;
165 if (ctx->Color.ColorMask[0][GCOMP])
166 nv04->ctrl[0] |= NV04_MULTITEX_TRIANGLE_CONTROL0_GREEN_WRITE;
167 if (ctx->Color.ColorMask[0][BCOMP])
168 nv04->ctrl[0] |= NV04_MULTITEX_TRIANGLE_CONTROL0_BLUE_WRITE;
169 if (ctx->Color.ColorMask[0][ACOMP])
170 nv04->ctrl[0] |= NV04_MULTITEX_TRIANGLE_CONTROL0_ALPHA_WRITE;
171
172 /* Stencil test. */
173 if (ctx->Stencil.WriteMask[0])
174 nv04->ctrl[0] |= NV04_MULTITEX_TRIANGLE_CONTROL0_STENCIL_WRITE;
175
176 if (ctx->Stencil.Enabled)
177 nv04->ctrl[1] |= NV04_MULTITEX_TRIANGLE_CONTROL1_STENCIL_ENABLE;
178
179 nv04->ctrl[1] |= get_comparison_op(ctx->Stencil.Function[0]) << 4 |
180 ctx->Stencil.Ref[0] << 8 |
181 ctx->Stencil.ValueMask[0] << 16 |
182 ctx->Stencil.WriteMask[0] << 24;
183
184 nv04->ctrl[2] |= get_stencil_op(ctx->Stencil.ZPassFunc[0]) << 8 |
185 get_stencil_op(ctx->Stencil.ZFailFunc[0]) << 4 |
186 get_stencil_op(ctx->Stencil.FailFunc[0]);
187 }
188
189 void
nv04_defer_blend(struct gl_context * ctx,int emit)190 nv04_defer_blend(struct gl_context *ctx, int emit)
191 {
192 context_dirty(ctx, BLEND);
193 }
194
195 void
nv04_emit_blend(struct gl_context * ctx,int emit)196 nv04_emit_blend(struct gl_context *ctx, int emit)
197 {
198 struct nv04_context *nv04 = to_nv04_context(ctx);
199
200 nv04->blend &= NV04_TEXTURED_TRIANGLE_BLEND_TEXTURE_MAP__MASK;
201 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_MASK_BIT_MSB |
202 NV04_TEXTURED_TRIANGLE_BLEND_TEXTURE_PERSPECTIVE_ENABLE;
203
204 /* Alpha blending. */
205 nv04->blend |= get_blend_func(ctx->Color.Blend[0].DstRGB) << 28 |
206 get_blend_func(ctx->Color.Blend[0].SrcRGB) << 24;
207
208 if (ctx->Color.BlendEnabled)
209 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_BLEND_ENABLE;
210
211 /* Shade model. */
212 if (ctx->Light.ShadeModel == GL_SMOOTH)
213 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_SHADE_MODE_GOURAUD;
214 else
215 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_SHADE_MODE_FLAT;
216
217 /* Secondary color */
218 if (_mesa_need_secondary_color(ctx))
219 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_SPECULAR_ENABLE;
220
221 /* Fog. */
222 if (ctx->Fog.Enabled) {
223 nv04->blend |= NV04_TEXTURED_TRIANGLE_BLEND_FOG_ENABLE;
224 nv04->fog = pack_rgba_f(MESA_FORMAT_ARGB8888, ctx->Fog.Color);
225 }
226 }
227