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

   1 /**************************************************************************
   2
   3 Copyright 2006 Stephane Marchesin
   4 All Rights Reserved.
   5
   6 Permission is hereby granted, free of charge, to any person obtaining a
   7 copy of this software and associated documentation files (the "Software"),
   8 to deal in the Software without restriction, including without limitation
   9 on the rights to use, copy, modify, merge, publish, distribute, sub
  10 license, and/or sell copies of the Software, and to permit persons to whom
  11 the Software is furnished to do so, subject to the following conditions:
  12
  13 The above copyright notice and this permission notice (including the next
  14 paragraph) shall be included in all copies or substantial portions of the
  15 Software.
  16
  17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  20 ERIC ANHOLT OR SILICON INTEGRATED SYSTEMS CORP BE LIABLE FOR ANY CLAIM,
  21 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  22 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  23 USE OR OTHER DEALINGS IN THE SOFTWARE.
  24
  25 **************************************************************************/
  26
  27
  28 #include "nouveau_context.h"
  29 #include "nouveau_span.h"
  30 #include "nouveau_fifo.h"
  31 #include "nouveau_lock.h"
  32
  33 #include "swrast/swrast.h"
  34
  35 #define HAVE_HW_DEPTH_SPANS     0
  36 #define HAVE_HW_DEPTH_PIXELS    0
  37 #define HAVE_HW_STENCIL_SPANS   0
  38 #define HAVE_HW_STENCIL_PIXELS  0
  39
  40 static char *fake_span[1280*1024*4];
  41
  42 #define HW_CLIPLOOP()                                                   \
  43    do {                                                                 \
  44       int _nc = nmesa->numClipRects;                                    \
  45       while ( _nc-- ) {                                                 \
  46          int minx = nmesa->pClipRects[_nc].x1 - nmesa->drawX;           \
  47          int miny = nmesa->pClipRects[_nc].y1 - nmesa->drawY;           \
  48          int maxx = nmesa->pClipRects[_nc].x2 - nmesa->drawX;           \
  49          int maxy = nmesa->pClipRects[_nc].y2 - nmesa->drawY;
  50
  51 #define LOCAL_VARS                                                      \
  52    nouveauContextPtr nmesa = NOUVEAU_CONTEXT(ctx);                      \
  53    nouveau_renderbuffer *nrb = (nouveau_renderbuffer *)rb;              \
  54    GLuint height = nrb->mesa.Height;                                    \
  55    GLubyte *map = (GLubyte *)(nrb->map ? nrb->map : nrb->mem->map) +    \
  56          (nmesa->drawY * nrb->pitch) + (nmesa->drawX * nrb->cpp);       \
  57    map = fake_span; \
  58    GLuint p;                                                            \
  59    (void) p;
  60
  61 #define Y_FLIP( _y )            (height - _y - 1)
  62
  63 #define HW_LOCK()
  64
  65 #define HW_UNLOCK()
  66
  67
  68
  69 /* ================================================================
  70  * Color buffers
  71  */
  72
  73 /* RGB565 */
  74 #define SPANTMP_PIXEL_FMT GL_RGB
  75 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
  76
  77 #define TAG(x)    nouveau##x##_RGB565
  78 #define TAG2(x,y) nouveau##x##_RGB565##y
  79 #define GET_PTR(X,Y) (map + (Y)*nrb->pitch + (X)*nrb->cpp)
  80 #include "spantmp2.h"
  81
  82
  83 /* ARGB8888 */
  84 #define SPANTMP_PIXEL_FMT GL_BGRA
  85 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
  86
  87 #define TAG(x)    nouveau##x##_ARGB8888
  88 #define TAG2(x,y) nouveau##x##_ARGB8888##y
  89 #define GET_PTR(X,Y) (map + (Y)*nrb->pitch + (X)*nrb->cpp)
  90 #include "spantmp2.h"
  91
  92 static void
  93 nouveauSpanRenderStart( GLcontext *ctx )
  94 {
  95    nouveauContextPtr nmesa = NOUVEAU_CONTEXT(ctx);
  96    FIRE_RING();
  97    LOCK_HARDWARE(nmesa);
  98    nouveauWaitForIdleLocked( nmesa );
  99 }
 100
 101 static void
 102 nouveauSpanRenderFinish( GLcontext *ctx )
 103 {
 104    nouveauContextPtr nmesa = NOUVEAU_CONTEXT(ctx);
 105    _swrast_flush( ctx );
 106    nouveauWaitForIdleLocked( nmesa );
 107    UNLOCK_HARDWARE( nmesa );
 108 }
 109
 110 void nouveauSpanInitFunctions( GLcontext *ctx )
 111 {
 112    struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
 113    swdd->SpanRenderStart        = nouveauSpanRenderStart;
 114    swdd->SpanRenderFinish       = nouveauSpanRenderFinish;
 115 }
 116
 117
 118 /**
 119  * Plug in the Get/Put routines for the given driRenderbuffer.
 120  */
 121 void
 122 nouveauSpanSetFunctions(nouveau_renderbuffer *nrb, const GLvisual *vis)
 123 {
 124    if (nrb->mesa._ActualFormat == GL_RGBA8)
 125       nouveauInitPointers_ARGB8888(&nrb->mesa);
 126    else // if (nrb->mesa._ActualFormat == GL_RGB5)
 127       nouveauInitPointers_RGB565(&nrb->mesa);
 128 }