pp_program.c revision b8e80941 
1/**************************************************************************
2 *
3 * Copyright 2010 Jakob Bornecrantz
4 * Copyright 2011 Lauri Kasanen
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 **************************************************************************/
28
29#include "postprocess/postprocess.h"
30#include "postprocess/pp_private.h"
31
32#include "cso_cache/cso_context.h"
33#include "pipe/p_screen.h"
34#include "pipe/p_context.h"
35#include "pipe/p_state.h"
36#include "pipe/p_shader_tokens.h"
37#include "util/u_inlines.h"
38#include "util/u_simple_shaders.h"
39#include "util/u_memory.h"
40
41/** Initialize the internal details */
42struct pp_program *
43pp_init_prog(struct pp_queue_t *ppq, struct pipe_context *pipe,
44             struct cso_context *cso)
45{
46   struct pp_program *p;
47
48   pp_debug("Initializing program\n");
49   if (!pipe)
50      return NULL;
51
52   p = CALLOC(1, sizeof(struct pp_program));
53   if (!p)
54      return NULL;
55
56   p->screen = pipe->screen;
57   p->pipe = pipe;
58   p->cso = cso;
59
60   {
61      static const float verts[4][2][4] = {
62         {
63          {1.0f, 1.0f, 0.0f, 1.0f},
64          {1.0f, 1.0f, 0.0f, 1.0f}
65          },
66         {
67          {-1.0f, 1.0f, 0.0f, 1.0f},
68          {0.0f, 1.0f, 0.0f, 1.0f}
69          },
70         {
71          {-1.0f, -1.0f, 0.0f, 1.0f},
72          {0.0f, 0.0f, 0.0f, 1.0f}
73          },
74         {
75          {1.0f, -1.0f, 0.0f, 1.0f},
76          {1.0f, 0.0f, 0.0f, 1.0f}
77          }
78      };
79
80      p->vbuf = pipe_buffer_create(pipe->screen, PIPE_BIND_VERTEX_BUFFER,
81                                   PIPE_USAGE_DEFAULT, sizeof(verts));
82      pipe_buffer_write(p->pipe, p->vbuf, 0, sizeof(verts), verts);
83   }
84
85   p->blend.rt[0].colormask = PIPE_MASK_RGBA;
86   p->blend.rt[0].rgb_src_factor = p->blend.rt[0].alpha_src_factor =
87      PIPE_BLENDFACTOR_SRC_ALPHA;
88   p->blend.rt[0].rgb_dst_factor = p->blend.rt[0].alpha_dst_factor =
89      PIPE_BLENDFACTOR_INV_SRC_ALPHA;
90
91   p->rasterizer.cull_face = PIPE_FACE_NONE;
92   p->rasterizer.half_pixel_center = 1;
93   p->rasterizer.bottom_edge_rule = 1;
94   p->rasterizer.depth_clip_near = 1;
95   p->rasterizer.depth_clip_far = 1;
96
97   p->sampler.wrap_s = p->sampler.wrap_t = p->sampler.wrap_r =
98      PIPE_TEX_WRAP_CLAMP_TO_EDGE;
99
100   p->sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
101   p->sampler.min_img_filter = p->sampler.mag_img_filter =
102      PIPE_TEX_FILTER_LINEAR;
103   p->sampler.normalized_coords = 1;
104
105   p->sampler_point.wrap_s = p->sampler_point.wrap_t =
106      p->sampler_point.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
107   p->sampler_point.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
108   p->sampler_point.min_img_filter = p->sampler_point.mag_img_filter =
109      PIPE_TEX_FILTER_NEAREST;
110   p->sampler_point.normalized_coords = 1;
111
112   p->velem[0].src_offset = 0;
113   p->velem[0].instance_divisor = 0;
114   p->velem[0].vertex_buffer_index = 0;
115   p->velem[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
116   p->velem[1].src_offset = 1 * 4 * sizeof(float);
117   p->velem[1].instance_divisor = 0;
118   p->velem[1].vertex_buffer_index = 0;
119   p->velem[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
120
121   if (!p->screen->is_format_supported(p->screen,
122                                       PIPE_FORMAT_R32G32B32A32_FLOAT,
123                                       PIPE_BUFFER, 1, 1,
124                                       PIPE_BIND_VERTEX_BUFFER))
125      pp_debug("Vertex buf format fail\n");
126
127
128   {
129      const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
130         TGSI_SEMANTIC_GENERIC
131      };
132      const uint semantic_indexes[] = { 0, 0 };
133      p->passvs = util_make_vertex_passthrough_shader(p->pipe, 2,
134                                                      semantic_names,
135                                                      semantic_indexes, FALSE);
136   }
137
138   p->framebuffer.nr_cbufs = 1;
139
140   p->surf.format = PIPE_FORMAT_B8G8R8A8_UNORM;
141
142   return p;
143}
144