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 <stdio.h>
28#include "main/mtypes.h"
29#include "main/fbobject.h"
30
31#include "nouveau_driver.h"
32#include "nouveau_context.h"
33#include "nouveau_fbo.h"
34#include "nouveau_util.h"
35
36#include "drivers/common/meta.h"
37
38const char * const nouveau_vendor_string = "Nouveau";
39
40const char *
41nouveau_get_renderer_string(unsigned chipset)
42{
43	char hardware_name[32];
44	static char buffer[128];
45
46	snprintf(hardware_name, sizeof(hardware_name), "nv%02X", chipset);
47	driGetRendererString(buffer, hardware_name, 0);
48
49	return buffer;
50}
51
52static const GLubyte *
53nouveau_get_string(struct gl_context *ctx, GLenum name)
54{
55	switch (name) {
56		case GL_VENDOR:
57			return (GLubyte *)nouveau_vendor_string;
58
59		case GL_RENDERER:
60			return (GLubyte *)nouveau_get_renderer_string(context_chipset(ctx));
61		default:
62			return NULL;
63	}
64}
65
66static void
67nouveau_flush(struct gl_context *ctx)
68{
69	struct nouveau_context *nctx = to_nouveau_context(ctx);
70	struct nouveau_pushbuf *push = context_push(ctx);
71
72	PUSH_KICK(push);
73
74	if (_mesa_is_winsys_fbo(ctx->DrawBuffer) &&
75	    ctx->DrawBuffer->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT) {
76		__DRIscreen *screen = nctx->screen->dri_screen;
77		const __DRIdri2LoaderExtension *dri2 = screen->dri2.loader;
78		__DRIdrawable *drawable = nctx->dri_context->driDrawablePriv;
79
80		if (drawable && drawable->loaderPrivate)
81			dri2->flushFrontBuffer(drawable, drawable->loaderPrivate);
82	}
83}
84
85static void
86nouveau_finish(struct gl_context *ctx)
87{
88	struct nouveau_context *nctx = to_nouveau_context(ctx);
89	struct nouveau_pushbuf *push = context_push(ctx);
90	struct nouveau_pushbuf_refn refn =
91		{ nctx->fence, NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR };
92
93	nouveau_flush(ctx);
94
95	if (!nouveau_pushbuf_space(push, 16, 0, 0) &&
96	    !nouveau_pushbuf_refn(push, &refn, 1)) {
97		PUSH_DATA(push, 0);
98		PUSH_KICK(push);
99	}
100
101	nouveau_bo_wait(nctx->fence, NOUVEAU_BO_RDWR, context_client(ctx));
102}
103
104void
105nouveau_clear(struct gl_context *ctx, GLbitfield buffers)
106{
107	struct gl_framebuffer *fb = ctx->DrawBuffer;
108	int x, y, w, h;
109	int i, buf;
110
111	nouveau_validate_framebuffer(ctx);
112	get_scissors(fb, &x, &y, &w, &h);
113
114	for (i = 0; i < BUFFER_COUNT; i++) {
115		struct nouveau_surface *s;
116		unsigned mask, value;
117
118		buf = buffers & (1 << i);
119		if (!buf)
120			continue;
121
122		s = &to_nouveau_renderbuffer(
123			fb->Attachment[i].Renderbuffer)->surface;
124
125		if (buf & BUFFER_BITS_COLOR) {
126			const float *color = ctx->Color.ClearColor.f;
127
128			if (fb->Attachment[i].Renderbuffer->_BaseFormat ==
129			    GL_LUMINANCE_ALPHA)
130				value = pack_la_clamp_f(
131						s->format, color[0], color[3]);
132			else
133				value = pack_rgba_clamp_f(s->format, color);
134
135			mask = pack_rgba_i(s->format, ctx->Color.ColorMask[0]);
136
137			if (mask)
138				context_drv(ctx)->surface_fill(
139					ctx, s, mask, value, x, y, w, h);
140
141			buffers &= ~buf;
142
143		} else if (buf & (BUFFER_BIT_DEPTH | BUFFER_BIT_STENCIL)) {
144			mask = pack_zs_i(s->format,
145					 (buffers & BUFFER_BIT_DEPTH &&
146					  ctx->Depth.Mask) ? ~0 : 0,
147					 (buffers & BUFFER_BIT_STENCIL ?
148					  ctx->Stencil.WriteMask[0] : 0));
149			value = pack_zs_f(s->format,
150					  ctx->Depth.Clear,
151					  ctx->Stencil.Clear);
152
153			if (mask)
154				context_drv(ctx)->surface_fill(
155					ctx, s, mask, value, x, y, w, h);
156
157			buffers &= ~(BUFFER_BIT_DEPTH | BUFFER_BIT_STENCIL);
158		}
159	}
160
161	if (buffers)
162		_mesa_meta_Clear(ctx, buffers);
163}
164
165void
166nouveau_driver_functions_init(struct dd_function_table *functions)
167{
168	functions->GetString = nouveau_get_string;
169	functions->Flush = nouveau_flush;
170	functions->Finish = nouveau_finish;
171	functions->Clear = nouveau_clear;
172	functions->DrawPixels = _mesa_meta_DrawPixels;
173	functions->CopyPixels = _mesa_meta_CopyPixels;
174	functions->Bitmap = _mesa_meta_Bitmap;
175	functions->BlitFramebuffer = _mesa_meta_and_swrast_BlitFramebuffer;
176}
177