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Diffstat (limited to 'src/mesa/drivers/dri/s3v/s3v_span.c')
-rw-r--r--src/mesa/drivers/dri/s3v/s3v_span.c308
1 files changed, 308 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/s3v/s3v_span.c b/src/mesa/drivers/dri/s3v/s3v_span.c
new file mode 100644
index 0000000000..d8210f684b
--- /dev/null
+++ b/src/mesa/drivers/dri/s3v/s3v_span.c
@@ -0,0 +1,308 @@
+/*
+ * Author: Max Lingua <sunmax@libero.it>
+ */
+
+#include "s3v_context.h"
+#include "s3v_lock.h"
+
+#include "swrast/swrast.h"
+
+#define _SPANLOCK 1
+#define DBG 0
+
+#define LOCAL_VARS \
+ s3vContextPtr vmesa = S3V_CONTEXT(ctx); \
+ s3vScreenPtr s3vscrn = vmesa->s3vScreen; \
+ __DRIscreenPrivate *sPriv = vmesa->driScreen; \
+ __DRIdrawablePrivate *dPriv = vmesa->driDrawable; \
+ GLuint pitch = ( (vmesa->Flags & S3V_BACK_BUFFER) ? \
+ ((dPriv->w+31)&~31) * s3vscrn->cpp \
+ : sPriv->fbWidth * s3vscrn->cpp); \
+ GLuint height = dPriv->h; \
+ char *buf = ( (vmesa->Flags & S3V_BACK_BUFFER) ? \
+ (char *)(sPriv->pFB + vmesa->drawOffset) \
+ : (char *)(sPriv->pFB + vmesa->drawOffset \
+ + dPriv->x * s3vscrn->cpp + dPriv->y * pitch) ); \
+ char *read_buf = ( (vmesa->Flags & S3V_BACK_BUFFER) ? \
+ (char *)(sPriv->pFB + vmesa->drawOffset) \
+ : (char *)(sPriv->pFB + vmesa->drawOffset \
+ + dPriv->x * s3vscrn->cpp + dPriv->y * pitch) ); \
+ GLuint p; \
+ (void) read_buf; (void) buf; (void) p; (void) pitch
+
+/* FIXME! Depth/Stencil read/writes don't work ! */
+#define LOCAL_DEPTH_VARS \
+ s3vScreenPtr s3vscrn = vmesa->s3vScreen; \
+ __DRIdrawablePrivate *dPriv = vmesa->driDrawable; \
+ __DRIscreenPrivate *sPriv = vmesa->driScreen; \
+ GLuint pitch = s3vscrn->depthPitch; \
+ GLuint height = dPriv->h; \
+ char *buf = (char *)(sPriv->pFB + \
+ s3vscrn->depthOffset); /* + \
+ dPriv->x * s3vscrn->cpp + \
+ dPriv->y * pitch)*/ \
+ (void) pitch
+
+#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
+
+
+#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)
+
+#if _SPANLOCK /* OK, we lock */
+
+#define HW_LOCK() \
+ s3vContextPtr vmesa = S3V_CONTEXT(ctx); \
+ (void) vmesa; \
+ DMAFLUSH(); \
+ S3V_SIMPLE_FLUSH_LOCK(vmesa);
+#define HW_UNLOCK() S3V_SIMPLE_UNLOCK(vmesa);
+
+#else /* plz, don't lock */
+
+#define HW_LOCK() \
+ s3vContextPtr vmesa = S3V_CONTEXT(ctx); \
+ (void) vmesa; \
+ DMAFLUSH();
+#define HW_UNLOCK()
+
+#endif
+
+#define HW_CLIPLOOP() \
+ do { \
+ __DRIdrawablePrivate *dPriv = vmesa->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)
+
+
+/* ================================================================
+ * Color buffer
+ */
+
+/* 16 bit, RGB565 color spanline and pixel functions
+ */
+#define INIT_MONO_PIXEL(p, color) \
+ p = S3VIRGEPACKCOLOR555( color[0], color[1], color[2], color[3] )
+
+#define WRITE_RGBA( _x, _y, r, g, b, a ) \
+do { \
+ *(GLushort *)(buf + _x*2 + _y*pitch) = ((((int)r & 0xf8) << 7) | \
+ (((int)g & 0xf8) << 2) | \
+ (((int)b & 0xf8) >> 3)); \
+ DEBUG(("buf=0x%x drawOffset=0x%x dPriv->x=%i s3vscrn->cpp=%i dPriv->y=%i pitch=%i\n", \
+ sPriv->pFB, vmesa->drawOffset, dPriv->x, s3vscrn->cpp, dPriv->y, pitch)); \
+ DEBUG(("dPriv->w = %i\n", dPriv->w)); \
+} while(0)
+
+#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 >> 7) & 0xf8; \
+ rgba[1] = (p >> 2) & 0xf8; \
+ rgba[2] = (p << 3) & 0xf8; \
+ rgba[3] = 0xff; /*
+ if ( rgba[0] & 0x08 ) rgba[0] |= 0x07; \
+ if ( rgba[1] & 0x04 ) rgba[1] |= 0x03; \
+ if ( rgba[2] & 0x08 ) rgba[2] |= 0x07; */ \
+ } while (0)
+
+#define TAG(x) s3v##x##_RGB555
+#include "spantmp.h"
+
+
+/* 32 bit, ARGB8888 color spanline and pixel functions
+ */
+
+#undef INIT_MONO_PIXEL
+#define INIT_MONO_PIXEL(p, color) \
+ p = PACK_COLOR_8888( color[3], color[0], color[1], color[2] )
+
+#define WRITE_RGBA( _x, _y, r, g, b, a ) \
+ *(GLuint *)(buf + _x*4 + _y*pitch) = ((b << 0) | \
+ (g << 8) | \
+ (r << 16) | \
+ (a << 24) )
+
+#define WRITE_PIXEL( _x, _y, p ) \
+ *(GLuint *)(buf + _x*4 + _y*pitch) = p
+
+#define READ_RGBA( rgba, _x, _y ) \
+do { \
+ GLuint p = *(GLuint *)(read_buf + _x*4 + _y*pitch); \
+ rgba[0] = (p >> 16) & 0xff; \
+ rgba[1] = (p >> 8) & 0xff; \
+ rgba[2] = (p >> 0) & 0xff; \
+ rgba[3] = (p >> 24) & 0xff; \
+} while (0)
+
+#define TAG(x) s3v##x##_ARGB8888
+#include "spantmp.h"
+
+
+/* 16 bit depthbuffer functions.
+ */
+#define WRITE_DEPTH( _x, _y, d ) \
+ *(GLushort *)(buf + _x*2 + _y*dPriv->w*2) = d
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = *(GLushort *)(buf + _x*2 + _y*dPriv->w*2);
+
+#define TAG(x) s3v##x##_16
+#include "depthtmp.h"
+
+
+
+
+/* 32 bit depthbuffer functions.
+ */
+#if 0
+#define WRITE_DEPTH( _x, _y, d ) \
+ *(GLuint *)(buf + _x*4 + _y*pitch) = d;
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = *(GLuint *)(buf + _x*4 + _y*pitch);
+
+#define TAG(x) s3v##x##_32
+#include "depthtmp.h"
+#endif
+
+
+/* 24/8 bit interleaved depth/stencil functions
+ */
+#if 0
+#define WRITE_DEPTH( _x, _y, d ) { \
+ GLuint tmp = *(GLuint *)(buf + _x*4 + _y*pitch); \
+ tmp &= 0xff; \
+ tmp |= (d) & 0xffffff00; \
+ *(GLuint *)(buf + _x*4 + _y*pitch) = tmp; \
+}
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = *(GLuint *)(buf + _x*4 + _y*pitch) & ~0xff
+
+
+#define TAG(x) s3v##x##_24_8
+#include "depthtmp.h"
+
+#define WRITE_STENCIL( _x, _y, d ) { \
+ GLuint tmp = *(GLuint *)(buf + _x*4 + _y*pitch); \
+ tmp &= 0xffffff00; \
+ tmp |= d & 0xff; \
+ *(GLuint *)(buf + _x*4 + _y*pitch) = tmp; \
+}
+
+#define READ_STENCIL( d, _x, _y ) \
+ d = *(GLuint *)(buf + _x*4 + _y*pitch) & 0xff
+
+#define TAG(x) s3v##x##_24_8
+#include "stenciltmp.h"
+
+#endif
+
+static void s3vSetReadBuffer( GLcontext *ctx,
+ GLframebuffer *colorBuffer,
+ GLenum mode )
+{
+ s3vContextPtr vmesa = S3V_CONTEXT(ctx);
+
+ switch ( mode ) {
+ case GL_FRONT_LEFT:
+ vmesa->readOffset = 0;
+ break;
+ case GL_BACK_LEFT:
+ vmesa->readOffset = vmesa->driScreen->fbHeight * vmesa->driScreen->fbWidth * vmesa->s3vScreen->cpp;
+ break;
+ }
+}
+
+
+void s3vInitSpanFuncs( GLcontext *ctx )
+{
+ s3vContextPtr vmesa = S3V_CONTEXT(ctx);
+ struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
+
+ swdd->SetReadBuffer = s3vSetReadBuffer;
+
+ switch ( vmesa->s3vScreen->cpp ) {
+ case 2:
+ swdd->WriteRGBASpan = s3vWriteRGBASpan_RGB555;
+ swdd->WriteRGBSpan = s3vWriteRGBSpan_RGB555;
+ swdd->WriteMonoRGBASpan = s3vWriteMonoRGBASpan_RGB555;
+ swdd->WriteRGBAPixels = s3vWriteRGBAPixels_RGB555;
+ swdd->WriteMonoRGBAPixels = s3vWriteMonoRGBAPixels_RGB555;
+ swdd->ReadRGBASpan = s3vReadRGBASpan_RGB555;
+ swdd->ReadRGBAPixels = s3vReadRGBAPixels_RGB555;
+ break;
+
+ case 4:
+ swdd->WriteRGBASpan = s3vWriteRGBASpan_ARGB8888;
+ swdd->WriteRGBSpan = s3vWriteRGBSpan_ARGB8888;
+ swdd->WriteMonoRGBASpan = s3vWriteMonoRGBASpan_ARGB8888;
+ swdd->WriteRGBAPixels = s3vWriteRGBAPixels_ARGB8888;
+ swdd->WriteMonoRGBAPixels = s3vWriteMonoRGBAPixels_ARGB8888;
+#if 1
+ swdd->ReadRGBASpan = s3vReadRGBASpan_ARGB8888;
+#else
+ swdd->ReadRGBASpan = s3vReadRGBASpan8888;
+#endif
+ swdd->ReadRGBAPixels = s3vReadRGBAPixels_ARGB8888;
+ break;
+
+ default:
+ break;
+ }
+
+ switch ( vmesa->glCtx->Visual.depthBits ) {
+ case 15:
+ case 16:
+ swdd->ReadDepthSpan = s3vReadDepthSpan_16;
+ swdd->WriteDepthSpan = s3vWriteDepthSpan_16;
+ swdd->ReadDepthPixels = s3vReadDepthPixels_16;
+ swdd->WriteDepthPixels = s3vWriteDepthPixels_16;
+ break;
+
+#if 0
+ case 24:
+ swdd->ReadDepthSpan = s3vReadDepthSpan_24_8;
+ swdd->WriteDepthSpan = s3vWriteDepthSpan_24_8;
+ swdd->ReadDepthPixels = s3vReadDepthPixels_24_8;
+ swdd->WriteDepthPixels = s3vWriteDepthPixels_24_8;
+
+ swdd->ReadStencilSpan = s3vReadStencilSpan_24_8;
+ swdd->WriteStencilSpan = s3vWriteStencilSpan_24_8;
+ swdd->ReadStencilPixels = s3vReadStencilPixels_24_8;
+ swdd->WriteStencilPixels = s3vWriteStencilPixels_24_8;
+ break;
+#endif
+
+ default:
+ break;
+ }
+}
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