pp_program.c revision dc4c821f0817a3db716f965692fb701079f66340 
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 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 "cso_cache/cso_context.h"
31#include "pipe/p_screen.h"
32#include "pipe/p_context.h"
33#include "pipe/p_state.h"
34#include "pipe/p_shader_tokens.h"
35#include "util/u_inlines.h"
36#include "util/u_simple_shaders.h"
37#include "util/u_memory.h"
38
39/** Initialize the internal details */
40struct program *
41pp_init_prog(struct pp_queue_t *ppq, struct pipe_screen *pscreen)
42{
43
44   struct program *p;
45
46   pp_debug("Initializing program\n");
47   if (!pscreen)
48      return NULL;
49
50   p = CALLOC(1, sizeof(struct program));
51   if (!p)
52      return NULL;
53
54   p->screen = pscreen;
55   p->pipe = pscreen->context_create(pscreen, NULL);
56   p->cso = cso_create_context(p->pipe);
57
58   {
59      static const float verts[4][2][4] = {
60         {
61          {1.0f, 1.0f, 0.0f, 1.0f},
62          {1.0f, 1.0f, 0.0f, 1.0f}
63          },
64         {
65          {-1.0f, 1.0f, 0.0f, 1.0f},
66          {0.0f, 1.0f, 0.0f, 1.0f}
67          },
68         {
69          {-1.0f, -1.0f, 0.0f, 1.0f},
70          {0.0f, 0.0f, 0.0f, 1.0f}
71          },
72         {
73          {1.0f, -1.0f, 0.0f, 1.0f},
74          {1.0f, 0.0f, 0.0f, 1.0f}
75          }
76      };
77
78      p->vbuf = pipe_buffer_create(pscreen, PIPE_BIND_VERTEX_BUFFER,
79                                   PIPE_USAGE_STATIC, sizeof(verts));
80      pipe_buffer_write(p->pipe, p->vbuf, 0, sizeof(verts), verts);
81   }
82
83   p->blend.rt[0].colormask = PIPE_MASK_RGBA;
84   p->blend.rt[0].rgb_src_factor = p->blend.rt[0].alpha_src_factor =
85      PIPE_BLENDFACTOR_SRC_ALPHA;
86   p->blend.rt[0].rgb_dst_factor = p->blend.rt[0].alpha_dst_factor =
87      PIPE_BLENDFACTOR_INV_SRC_ALPHA;
88
89   p->rasterizer.cull_face = PIPE_FACE_NONE;
90   p->rasterizer.gl_rasterization_rules = 1;
91   p->rasterizer.depth_clip = 1;
92
93   p->sampler.wrap_s = p->sampler.wrap_t = p->sampler.wrap_r =
94      PIPE_TEX_WRAP_CLAMP_TO_EDGE;
95
96   p->sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
97   p->sampler.min_img_filter = p->sampler.mag_img_filter =
98      PIPE_TEX_FILTER_LINEAR;
99   p->sampler.normalized_coords = 1;
100
101   p->sampler_point.wrap_s = p->sampler_point.wrap_t =
102      p->sampler_point.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
103   p->sampler_point.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
104   p->sampler_point.min_img_filter = p->sampler_point.mag_img_filter =
105      PIPE_TEX_FILTER_NEAREST;
106   p->sampler_point.normalized_coords = 1;
107
108   p->velem[0].src_offset = 0;
109   p->velem[0].instance_divisor = 0;
110   p->velem[0].vertex_buffer_index = 0;
111   p->velem[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
112   p->velem[1].src_offset = 1 * 4 * sizeof(float);
113   p->velem[1].instance_divisor = 0;
114   p->velem[1].vertex_buffer_index = 0;
115   p->velem[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
116
117   if (!p->screen->is_format_supported(p->screen,
118                                       PIPE_FORMAT_R32G32B32A32_FLOAT,
119                                       PIPE_BUFFER, 1,
120                                       PIPE_BIND_VERTEX_BUFFER))
121      pp_debug("Vertex buf format fail\n");
122
123
124   {
125      const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
126         TGSI_SEMANTIC_GENERIC
127      };
128      const uint semantic_indexes[] = { 0, 0 };
129      p->passvs = util_make_vertex_passthrough_shader(p->pipe, 2,
130                                                      semantic_names,
131                                                      semantic_indexes);
132   }
133
134   p->framebuffer.nr_cbufs = 1;
135
136   p->surf.usage = PIPE_BIND_RENDER_TARGET;
137   p->surf.format = PIPE_FORMAT_B8G8R8A8_UNORM;
138
139   p->pipe->set_sample_mask(p->pipe, ~0);
140
141   return p;
142}
143