src/mesa/drivers/dri/nouveau/nouveau_span.c

   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 "nouveau_driver.h"
  28 #include "nouveau_fbo.h"
  29 #include "nouveau_context.h"
  30 #include "nouveau_bo.h"
  31
  32 #include "swrast/swrast.h"
  33
  34 #define LOCAL_VARS                                                      \
  35         struct gl_framebuffer *fb = ctx->DrawBuffer;                    \
  36         struct nouveau_surface *s = &to_nouveau_renderbuffer(rb)->surface; \
  37         GLuint p;                                                       \
  38         (void)p;
  39
  40 #define LOCAL_DEPTH_VARS LOCAL_VARS
  41
  42 #define HW_LOCK()
  43 #define HW_UNLOCK()
  44
  45 #define HW_CLIPLOOP() {                                                 \
  46         int minx = 0;                                                   \
  47         int miny = 0;                                                   \
  48         int maxx = fb->Width;                                           \
  49         int maxy = fb->Height;
  50
  51 #define HW_ENDCLIPLOOP() }
  52
  53 #define Y_FLIP(y) (fb->Name ? (y) : rb->Height - 1 - (y))
  54
  55 /* RGB565 span functions */
  56 #define SPANTMP_PIXEL_FMT GL_RGB
  57 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
  58 #define TAG(x) nouveau_##x##_rgb565
  59 #define TAG2(x, y) nouveau_##x##_rgb565##y
  60 #define GET_PTR(x, y) (s->bo->map + (y)*s->pitch + (x)*s->cpp)
  61
  62 #include "spantmp2.h"
  63
  64 /* ARGB8888 span functions */
  65 #define SPANTMP_PIXEL_FMT GL_BGRA
  66 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
  67 #define TAG(x) nouveau_##x##_argb8888
  68 #define TAG2(x, y) nouveau_##x##_argb8888##y
  69 #define GET_PTR(x, y) (s->bo->map + (y)*s->pitch + (x)*s->cpp)
  70
  71 #include "spantmp2.h"
  72
  73 /* Z16 span functions */
  74 #define VALUE_TYPE uint16_t
  75 #define READ_DEPTH(v, x, y)                                             \
  76         v = *(uint16_t *)(s->bo->map + (y)*s->pitch + (x)*s->cpp);
  77 #define WRITE_DEPTH(x, y, v)                                            \
  78         *(uint16_t *)(s->bo->map + (y)*s->pitch + (x)*s->cpp) = v
  79 #define TAG(x) nouveau_##x##_z16
  80
  81 #include "depthtmp.h"
  82
  83 /* Z24S8 span functions */
  84 #define VALUE_TYPE uint32_t
  85 #define READ_DEPTH(v, x, y)                                             \
  86         v = *(uint32_t *)(s->bo->map + (y)*s->pitch + (x)*s->cpp);
  87 #define WRITE_DEPTH(x, y, v)                                            \
  88         *(uint32_t *)(s->bo->map + (y)*s->pitch + (x)*s->cpp) = v
  89 #define TAG(x) nouveau_##x##_z24s8
  90
  91 #include "depthtmp.h"
  92
  93 static void
  94 renderbuffer_map_unmap(struct gl_renderbuffer *rb, GLboolean map)
  95 {
  96         struct nouveau_surface *s = &to_nouveau_renderbuffer(rb)->surface;
  97
  98         if (map) {
  99                 switch (rb->Format) {
 100                 case MESA_FORMAT_RGB565:
 101                         nouveau_InitPointers_rgb565(rb);
 102                         break;
 103                 case MESA_FORMAT_XRGB8888:
 104                 case MESA_FORMAT_ARGB8888:
 105                         nouveau_InitPointers_argb8888(rb);
 106                         break;
 107                 case MESA_FORMAT_Z16:
 108                         nouveau_InitDepthPointers_z16(rb);
 109                         break;
 110                 case MESA_FORMAT_Z24_S8:
 111                         nouveau_InitDepthPointers_z24s8(rb);
 112                         break;
 113                 default:
 114                         assert(0);
 115                 }
 116
 117                 nouveau_bo_map(s->bo, NOUVEAU_BO_RDWR);
 118         } else {
 119                 nouveau_bo_unmap(s->bo);
 120         }
 121 }
 122
 123 static void
 124 texture_unit_map_unmap(GLcontext *ctx, struct gl_texture_unit *u, GLboolean map)
 125 {
 126         if (!u->_ReallyEnabled)
 127                 return;
 128
 129         if (map)
 130                 ctx->Driver.MapTexture(ctx, u->_Current);
 131         else
 132                 ctx->Driver.UnmapTexture(ctx, u->_Current);
 133 }
 134
 135 static void
 136 span_map_unmap(GLcontext *ctx, GLboolean map)
 137 {
 138         int i;
 139
 140         for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++)
 141                 renderbuffer_map_unmap(ctx->DrawBuffer->_ColorDrawBuffers[i], map);
 142
 143         renderbuffer_map_unmap(ctx->DrawBuffer->_ColorReadBuffer, map);
 144
 145         if (ctx->DrawBuffer->_DepthBuffer)
 146                 renderbuffer_map_unmap(ctx->DrawBuffer->_DepthBuffer->Wrapped, map);
 147
 148         for (i = 0; i < ctx->Const.MaxTextureUnits; i++)
 149                 texture_unit_map_unmap(ctx, &ctx->Texture.Unit[i], map);
 150 }
 151
 152 static void
 153 nouveau_span_start(GLcontext *ctx)
 154 {
 155         nouveau_fallback(ctx, SWRAST);
 156         span_map_unmap(ctx, GL_TRUE);
 157 }
 158
 159 static void
 160 nouveau_span_finish(GLcontext *ctx)
 161 {
 162         span_map_unmap(ctx, GL_FALSE);
 163         nouveau_fallback(ctx, HWTNL);
 164 }
 165
 166 void
 167 nouveau_span_functions_init(GLcontext *ctx)
 168 {
 169         struct swrast_device_driver *swdd =
 170                 _swrast_GetDeviceDriverReference(ctx);
 171
 172         swdd->SpanRenderStart = nouveau_span_start;
 173         swdd->SpanRenderFinish = nouveau_span_finish;
 174 }