diff options
Diffstat (limited to 'src/mesa/drivers/dri/i810/i810span.c')
| -rw-r--r-- | src/mesa/drivers/dri/i810/i810span.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i810/i810span.c b/src/mesa/drivers/dri/i810/i810span.c new file mode 100644 index 0000000000..dc8f4d1cb9 --- /dev/null +++ b/src/mesa/drivers/dri/i810/i810span.c @@ -0,0 +1,170 @@ +#include "glheader.h" +#include "macros.h" +#include "mtypes.h" +#include "colormac.h" + +#include "i810screen.h" +#include "i810_dri.h" + +#include "i810span.h" +#include "i810ioctl.h" +#include "swrast/swrast.h" + + +#define DBG 0 + +#define LOCAL_VARS \ + __DRIdrawablePrivate *dPriv = imesa->driDrawable; \ + i810ScreenPrivate *i810Screen = imesa->i810Screen; \ + GLuint pitch = i810Screen->backPitch; \ + GLuint height = dPriv->h; \ + GLushort p; \ + char *buf = (char *)(imesa->drawMap + \ + dPriv->x * 2 + \ + dPriv->y * pitch); \ + char *read_buf = (char *)(imesa->readMap + \ + dPriv->x * 2 + \ + dPriv->y * pitch); \ + (void) read_buf; (void) buf; (void) p + +#define LOCAL_DEPTH_VARS \ + __DRIdrawablePrivate *dPriv = imesa->driDrawable; \ + i810ScreenPrivate *i810Screen = imesa->i810Screen; \ + GLuint pitch = i810Screen->backPitch; \ + GLuint height = dPriv->h; \ + char *buf = (char *)(i810Screen->depth.map + \ + dPriv->x * 2 + \ + dPriv->y * pitch) + +#define INIT_MONO_PIXEL(p, color) \ + p = PACK_COLOR_565( color[0], color[1], color[2] ) + +#define CLIPPIXEL(_x,_y) (_x >= minx && _x < maxx && \ + _y >= miny && _y < maxy) + + +#define CLIPSPAN( _x, _y, _n, _x1, _n1, _i ) \ + if ( _y < miny || _y >= maxy ) { \ + _n1 = 0, _x1 = x; \ + } else { \ + _n1 = _n; \ + _x1 = _x; \ + if ( _x1 < minx ) _i += (minx-_x1), n1 -= (minx-_x1), _x1 = minx; \ + if ( _x1 + _n1 >= maxx ) n1 -= (_x1 + n1 - maxx); \ + } + +#define Y_FLIP(_y) (height - _y - 1) + +#define HW_LOCK() \ + i810ContextPtr imesa = I810_CONTEXT(ctx); \ + I810_FIREVERTICES(imesa); \ + i810DmaFinish(imesa); \ + LOCK_HARDWARE_QUIESCENT(imesa); + +#define HW_CLIPLOOP() \ + do { \ + __DRIdrawablePrivate *dPriv = imesa->driDrawable; \ + int _nc = dPriv->numClipRects; \ + while (_nc--) { \ + int minx = dPriv->pClipRects[_nc].x1 - dPriv->x; \ + int miny = dPriv->pClipRects[_nc].y1 - dPriv->y; \ + int maxx = dPriv->pClipRects[_nc].x2 - dPriv->x; \ + int maxy = dPriv->pClipRects[_nc].y2 - dPriv->y; + + +#define HW_ENDCLIPLOOP() \ + } \ + } while (0) + +#define HW_UNLOCK() \ + UNLOCK_HARDWARE(imesa); + + + + +/* 16 bit, 565 rgb color spanline and pixel functions + */ +#define WRITE_RGBA( _x, _y, r, g, b, a ) \ + *(GLushort *)(buf + _x*2 + _y*pitch) = ( (((int)r & 0xf8) << 8) | \ + (((int)g & 0xfc) << 3) | \ + (((int)b & 0xf8) >> 3)) +#define WRITE_PIXEL( _x, _y, p ) \ + *(GLushort *)(buf + _x*2 + _y*pitch) = p + +#define READ_RGBA( rgba, _x, _y ) \ +do { \ + GLushort p = *(GLushort *)(read_buf + _x*2 + _y*pitch); \ + rgba[0] = ((p >> 8) & 0xf8) * 255 / 0xf8; \ + rgba[1] = ((p >> 3) & 0xfc) * 255 / 0xfc; \ + rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8; \ + rgba[3] = 255; \ +} while(0) + +#define TAG(x) i810##x##_565 +#include "spantmp.h" + + + +/* 16 bit depthbuffer functions. + */ +#define WRITE_DEPTH( _x, _y, d ) \ + *(GLushort *)(buf + _x*2 + _y*pitch) = d; + +#define READ_DEPTH( d, _x, _y ) \ + d = *(GLushort *)(buf + _x*2 + _y*pitch); + +#define TAG(x) i810##x##_16 +#include "depthtmp.h" + + +/* + * This function is called to specify which buffer to read and write + * for software rasterization (swrast) fallbacks. This doesn't necessarily + * correspond to glDrawBuffer() or glReadBuffer() calls. + */ +static void i810SetBuffer(GLcontext *ctx, GLframebuffer *buffer, + GLuint bufferBit ) +{ + i810ContextPtr imesa = I810_CONTEXT(ctx); + (void) buffer; + + switch(bufferBit) { + case FRONT_LEFT_BIT: + if ( imesa->sarea->pf_current_page == 1) + imesa->readMap = imesa->i810Screen->back.map; + else + imesa->readMap = (char*)imesa->driScreen->pFB; + break; + case BACK_LEFT_BIT: + if ( imesa->sarea->pf_current_page == 1) + imesa->readMap = (char*)imesa->driScreen->pFB; + else + imesa->readMap = imesa->i810Screen->back.map; + break; + default: + ASSERT(0); + break; + } + imesa->drawMap = imesa->readMap; +} + + +void i810InitSpanFuncs( GLcontext *ctx ) +{ + struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx); + + swdd->SetBuffer = i810SetBuffer; + + swdd->WriteRGBASpan = i810WriteRGBASpan_565; + swdd->WriteRGBSpan = i810WriteRGBSpan_565; + swdd->WriteMonoRGBASpan = i810WriteMonoRGBASpan_565; + swdd->WriteRGBAPixels = i810WriteRGBAPixels_565; + swdd->WriteMonoRGBAPixels = i810WriteMonoRGBAPixels_565; + swdd->ReadRGBASpan = i810ReadRGBASpan_565; + swdd->ReadRGBAPixels = i810ReadRGBAPixels_565; + + swdd->ReadDepthSpan = i810ReadDepthSpan_16; + swdd->WriteDepthSpan = i810WriteDepthSpan_16; + swdd->ReadDepthPixels = i810ReadDepthPixels_16; + swdd->WriteDepthPixels = i810WriteDepthPixels_16; +} |