src/gallium/drivers/freedreno/a2xx/fd2_context.c

   1 /*
   2  * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors:
  24  *    Rob Clark <robclark@freedesktop.org>
  25  */
  26
  27
  28 #include "fd2_context.h"
  29 #include "fd2_blend.h"
  30 #include "fd2_draw.h"
  31 #include "fd2_emit.h"
  32 #include "fd2_gmem.h"
  33 #include "fd2_program.h"
  34 #include "fd2_rasterizer.h"
  35 #include "fd2_texture.h"
  36 #include "fd2_zsa.h"
  37
  38 static void
  39 fd2_context_destroy(struct pipe_context *pctx)
  40 {
  41         fd_context_destroy(pctx);
  42         free(pctx);
  43 }
  44
  45 static struct pipe_resource *
  46 create_solid_vertexbuf(struct pipe_context *pctx)
  47 {
  48         static const float init_shader_const[] = {
  49                         /* for clear/gmem2mem/mem2gmem (vertices): */
  50                         -1.000000, +1.000000, +1.000000,
  51                         +1.000000, +1.000000, +1.000000,
  52                         -1.000000, -1.000000, +1.000000,
  53                         /* for mem2gmem: (tex coords) */
  54                         +0.000000, +0.000000,
  55                         +1.000000, +0.000000,
  56                         +0.000000, +1.000000,
  57                         /* SCREEN_SCISSOR_BR value (must be at 60 byte offset in page) */
  58                         0.0,
  59         };
  60         struct pipe_resource *prsc = pipe_buffer_create(pctx->screen,
  61                         PIPE_BIND_CUSTOM, PIPE_USAGE_IMMUTABLE, sizeof(init_shader_const));
  62         pipe_buffer_write(pctx, prsc, 0,
  63                         sizeof(init_shader_const), init_shader_const);
  64         return prsc;
  65 }
  66
  67 static const uint8_t a22x_primtypes[PIPE_PRIM_MAX] = {
  68                 [PIPE_PRIM_POINTS]         = DI_PT_POINTLIST_PSIZE,
  69                 [PIPE_PRIM_LINES]          = DI_PT_LINELIST,
  70                 [PIPE_PRIM_LINE_STRIP]     = DI_PT_LINESTRIP,
  71                 [PIPE_PRIM_LINE_LOOP]      = DI_PT_LINELOOP,
  72                 [PIPE_PRIM_TRIANGLES]      = DI_PT_TRILIST,
  73                 [PIPE_PRIM_TRIANGLE_STRIP] = DI_PT_TRISTRIP,
  74                 [PIPE_PRIM_TRIANGLE_FAN]   = DI_PT_TRIFAN,
  75 };
  76
  77 static const uint8_t a20x_primtypes[PIPE_PRIM_MAX] = {
  78                 [PIPE_PRIM_POINTS]         = DI_PT_POINTLIST_PSIZE,
  79                 [PIPE_PRIM_LINES]          = DI_PT_LINELIST,
  80                 [PIPE_PRIM_LINE_STRIP]     = DI_PT_LINESTRIP,
  81                 [PIPE_PRIM_TRIANGLES]      = DI_PT_TRILIST,
  82                 [PIPE_PRIM_TRIANGLE_STRIP] = DI_PT_TRISTRIP,
  83                 [PIPE_PRIM_TRIANGLE_FAN]   = DI_PT_TRIFAN,
  84 };
  85
  86 struct pipe_context *
  87 fd2_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
  88 {
  89         struct fd_screen *screen = fd_screen(pscreen);
  90         struct fd2_context *fd2_ctx = CALLOC_STRUCT(fd2_context);
  91         struct pipe_context *pctx;
  92
  93         if (!fd2_ctx)
  94                 return NULL;
  95
  96         pctx = &fd2_ctx->base.base;
  97
  98         fd2_ctx->base.dev = fd_device_ref(screen->dev);
  99         fd2_ctx->base.screen = fd_screen(pscreen);
 100
 101         pctx->destroy = fd2_context_destroy;
 102         pctx->create_blend_state = fd2_blend_state_create;
 103         pctx->create_rasterizer_state = fd2_rasterizer_state_create;
 104         pctx->create_depth_stencil_alpha_state = fd2_zsa_state_create;
 105
 106         fd2_draw_init(pctx);
 107         fd2_gmem_init(pctx);
 108         fd2_texture_init(pctx);
 109         fd2_prog_init(pctx);
 110         fd2_emit_init(pctx);
 111
 112         pctx = fd_context_init(&fd2_ctx->base, pscreen,
 113                         (screen->gpu_id >= 220) ? a22x_primtypes : a20x_primtypes,
 114                         priv, flags);
 115         if (!pctx)
 116                 return NULL;
 117
 118         /* construct vertex state used for solid ops (clear, and gmem<->mem) */
 119         fd2_ctx->solid_vertexbuf = create_solid_vertexbuf(pctx);
 120
 121         return pctx;
 122 }