src/gallium/auxiliary/postprocess/pp_program.c

   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 */
  40 struct program *
  41 pp_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
  57    /* XXX this doesn't use the cso_context of the state tracker, but creates
  58     * its own. Having 2 existing cso_contexts use 1 pipe_context may cause
  59     * undefined behavior! */
  60    p->cso = cso_create_context(p->pipe);
  61
  62    {
  63       static const float verts[4][2][4] = {
  64          {
  65           {1.0f, 1.0f, 0.0f, 1.0f},
  66           {1.0f, 1.0f, 0.0f, 1.0f}
  67           },
  68          {
  69           {-1.0f, 1.0f, 0.0f, 1.0f},
  70           {0.0f, 1.0f, 0.0f, 1.0f}
  71           },
  72          {
  73           {-1.0f, -1.0f, 0.0f, 1.0f},
  74           {0.0f, 0.0f, 0.0f, 1.0f}
  75           },
  76          {
  77           {1.0f, -1.0f, 0.0f, 1.0f},
  78           {1.0f, 0.0f, 0.0f, 1.0f}
  79           }
  80       };
  81
  82       p->vbuf = pipe_buffer_create(pscreen, PIPE_BIND_VERTEX_BUFFER,
  83                                    PIPE_USAGE_STATIC, sizeof(verts));
  84       pipe_buffer_write(p->pipe, p->vbuf, 0, sizeof(verts), verts);
  85    }
  86
  87    p->blend.rt[0].colormask = PIPE_MASK_RGBA;
  88    p->blend.rt[0].rgb_src_factor = p->blend.rt[0].alpha_src_factor =
  89       PIPE_BLENDFACTOR_SRC_ALPHA;
  90    p->blend.rt[0].rgb_dst_factor = p->blend.rt[0].alpha_dst_factor =
  91       PIPE_BLENDFACTOR_INV_SRC_ALPHA;
  92
  93    p->rasterizer.cull_face = PIPE_FACE_NONE;
  94    p->rasterizer.gl_rasterization_rules = 1;
  95    p->rasterizer.depth_clip = 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,
 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);
 136    }
 137
 138    p->framebuffer.nr_cbufs = 1;
 139
 140    p->surf.usage = PIPE_BIND_RENDER_TARGET;
 141    p->surf.format = PIPE_FORMAT_B8G8R8A8_UNORM;
 142
 143    p->pipe->set_sample_mask(p->pipe, ~0);
 144
 145    return p;
 146 }