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      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_fbo.h"
     30 #include "nouveau_gldefs.h"
     31 #include "nouveau_util.h"
     32 #include "nv20_3d.xml.h"
     33 #include "nv20_driver.h"
     34 
     35 static inline unsigned
     36 get_rt_format(mesa_format format)
     37 {
     38 	switch (format) {
     39 	case MESA_FORMAT_B8G8R8X8_UNORM:
     40 		return NV20_3D_RT_FORMAT_COLOR_X8R8G8B8;
     41 	case MESA_FORMAT_B8G8R8A8_UNORM:
     42 		return NV20_3D_RT_FORMAT_COLOR_A8R8G8B8;
     43 	case MESA_FORMAT_B5G6R5_UNORM:
     44 		return NV20_3D_RT_FORMAT_COLOR_R5G6B5;
     45 	case MESA_FORMAT_Z_UNORM16:
     46 		return NV20_3D_RT_FORMAT_DEPTH_Z16;
     47 	case MESA_FORMAT_S8_UINT_Z24_UNORM:
     48 		return NV20_3D_RT_FORMAT_DEPTH_Z24S8;
     49 	default:
     50 		assert(0);
     51 	}
     52 }
     53 
     54 static void
     55 setup_hierz_buffer(struct gl_context *ctx)
     56 {
     57 	struct nouveau_pushbuf *push = context_push(ctx);
     58 	struct gl_framebuffer *fb = ctx->DrawBuffer;
     59 	struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
     60 	unsigned pitch = align(fb->Width, 128),
     61 		height = align(fb->Height, 2),
     62 		size = pitch * height;
     63 
     64 	if (!nfb->hierz.bo || nfb->hierz.bo->size != size) {
     65 		nouveau_bo_ref(NULL, &nfb->hierz.bo);
     66 		nouveau_bo_new(context_dev(ctx), NOUVEAU_BO_VRAM, 0, size,
     67 			       NULL, &nfb->hierz.bo);
     68 	}
     69 
     70 	BEGIN_NV04(push, NV25_3D(HIERZ_PITCH), 1);
     71 	PUSH_DATA (push, pitch);
     72 	BEGIN_NV04(push, NV25_3D(HIERZ_OFFSET), 1);
     73 	PUSH_MTHDl(push, NV25_3D(HIERZ_OFFSET), BUFCTX_FB,
     74 			 nfb->hierz.bo, 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR);
     75 }
     76 
     77 void
     78 nv20_emit_framebuffer(struct gl_context *ctx, int emit)
     79 {
     80 	struct nouveau_pushbuf *push = context_push(ctx);
     81 	struct gl_framebuffer *fb = ctx->DrawBuffer;
     82 	struct nouveau_surface *s;
     83 	unsigned rt_format = NV20_3D_RT_FORMAT_TYPE_LINEAR;
     84 	unsigned rt_pitch = 0, zeta_pitch = 0;
     85 	unsigned bo_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR;
     86 
     87 	if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT)
     88 		return;
     89 
     90 	PUSH_RESET(push, BUFCTX_FB);
     91 
     92 	/* Render target */
     93 	if (fb->_ColorDrawBuffers[0]) {
     94 		s = &to_nouveau_renderbuffer(
     95 			fb->_ColorDrawBuffers[0])->surface;
     96 
     97 		rt_format |= get_rt_format(s->format);
     98 		rt_pitch = s->pitch;
     99 
    100 		BEGIN_NV04(push, NV20_3D(COLOR_OFFSET), 1);
    101 		PUSH_MTHDl(push, NV20_3D(COLOR_OFFSET), BUFCTX_FB,
    102 				 s->bo, 0, bo_flags);
    103 	}
    104 
    105 	/* depth/stencil */
    106 	if (fb->Attachment[BUFFER_DEPTH].Renderbuffer) {
    107 		s = &to_nouveau_renderbuffer(
    108 			fb->Attachment[BUFFER_DEPTH].Renderbuffer)->surface;
    109 
    110 		rt_format |= get_rt_format(s->format);
    111 		zeta_pitch = s->pitch;
    112 
    113 		BEGIN_NV04(push, NV20_3D(ZETA_OFFSET), 1);
    114 		PUSH_MTHDl(push, NV20_3D(ZETA_OFFSET), BUFCTX_FB,
    115 				 s->bo, 0, bo_flags);
    116 
    117 		if (context_chipset(ctx) >= 0x25)
    118 			setup_hierz_buffer(ctx);
    119 	} else {
    120 		rt_format |= get_rt_format(MESA_FORMAT_S8_UINT_Z24_UNORM);
    121 		zeta_pitch = rt_pitch;
    122 	}
    123 
    124 	BEGIN_NV04(push, NV20_3D(RT_FORMAT), 2);
    125 	PUSH_DATA (push, rt_format);
    126 	PUSH_DATA (push, zeta_pitch << 16 | rt_pitch);
    127 
    128 	/* Recompute the viewport/scissor state. */
    129 	context_dirty(ctx, VIEWPORT);
    130 	context_dirty(ctx, SCISSOR);
    131 	context_dirty(ctx, DEPTH);
    132 }
    133 
    134 void
    135 nv20_emit_viewport(struct gl_context *ctx, int emit)
    136 {
    137 	struct nouveau_pushbuf *push = context_push(ctx);
    138 	struct gl_framebuffer *fb = ctx->DrawBuffer;
    139 	float a[4] = {};
    140 
    141 	get_viewport_translate(ctx, a);
    142 
    143 	BEGIN_NV04(push, NV20_3D(VIEWPORT_TRANSLATE_X), 4);
    144 	PUSH_DATAp(push, a, 4);
    145 
    146 	BEGIN_NV04(push, NV20_3D(VIEWPORT_CLIP_HORIZ(0)), 1);
    147 	PUSH_DATA (push, (fb->Width - 1) << 16);
    148 	BEGIN_NV04(push, NV20_3D(VIEWPORT_CLIP_VERT(0)), 1);
    149 	PUSH_DATA (push, (fb->Height - 1) << 16);
    150 
    151 	context_dirty(ctx, PROJECTION);
    152 }
    153