summaryrefslogtreecommitdiff
path: root/src/mesa/drivers/dri/r128/r128_span.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/drivers/dri/r128/r128_span.c')
-rw-r--r--src/mesa/drivers/dri/r128/r128_span.c449
1 files changed, 449 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/r128/r128_span.c b/src/mesa/drivers/dri/r128/r128_span.c
new file mode 100644
index 0000000000..2fbe93c590
--- /dev/null
+++ b/src/mesa/drivers/dri/r128/r128_span.c
@@ -0,0 +1,449 @@
+/**************************************************************************
+
+Copyright 1999, 2000 ATI Technologies Inc. and Precision Insight, Inc.,
+ Cedar Park, Texas.
+All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+on the rights to use, copy, modify, merge, publish, distribute, sub
+license, and/or sell copies of the Software, and to permit persons to whom
+the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice (including the next
+paragraph) shall be included in all copies or substantial portions of the
+Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ATI, PRECISION INSIGHT AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+**************************************************************************/
+
+/*
+ * Authors:
+ * Gareth Hughes <gareth@valinux.com>
+ * Keith Whitwell <keith@tungstengraphics.com>
+ * Kevin E. Martin <martin@valinux.com>
+ *
+ */
+
+#include "r128_context.h"
+#include "r128_ioctl.h"
+#include "r128_span.h"
+
+#include "swrast/swrast.h"
+
+#define DBG 0
+
+#define HAVE_HW_DEPTH_SPANS 1
+#define HAVE_HW_DEPTH_PIXELS 1
+#define HAVE_HW_STENCIL_SPANS 1
+#define HAVE_HW_STENCIL_PIXELS 1
+
+#define LOCAL_VARS \
+ r128ContextPtr rmesa = R128_CONTEXT(ctx); \
+ __DRIscreen *sPriv = rmesa->driScreen; \
+ __DRIdrawable *dPriv = rmesa->driDrawable; \
+ driRenderbuffer *drb = (driRenderbuffer *) rb; \
+ GLuint height = dPriv->h; \
+ GLuint p; \
+ (void) p;
+
+#define LOCAL_DEPTH_VARS \
+ r128ContextPtr rmesa = R128_CONTEXT(ctx); \
+ r128ScreenPtr r128scrn = rmesa->r128Screen; \
+ __DRIscreen *sPriv = rmesa->driScreen; \
+ __DRIdrawable *dPriv = rmesa->driDrawable; \
+ GLuint height = dPriv->h; \
+ (void) r128scrn; (void) sPriv; (void) height
+
+#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
+
+#define Y_FLIP( _y ) (height - _y - 1)
+
+#define HW_LOCK()
+
+#define HW_UNLOCK()
+
+
+
+/* ================================================================
+ * Color buffer
+ */
+
+/* 16 bit, RGB565 color spanline and pixel functions
+ */
+#define SPANTMP_PIXEL_FMT GL_RGB
+#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
+
+#define TAG(x) r128##x##_RGB565
+#define TAG2(x,y) r128##x##_RGB565##y
+#define GET_PTR(X,Y) (sPriv->pFB + drb->flippedOffset \
+ + ((dPriv->y + (Y)) * drb->flippedPitch + (dPriv->x + (X))) * drb->cpp)
+#include "spantmp2.h"
+
+
+/* 32 bit, ARGB8888 color spanline and pixel functions
+ */
+#define SPANTMP_PIXEL_FMT GL_BGRA
+#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
+
+#define TAG(x) r128##x##_ARGB8888
+#define TAG2(x,y) r128##x##_ARGB8888##y
+#define GET_PTR(X,Y) (sPriv->pFB + drb->flippedOffset \
+ + ((dPriv->y + (Y)) * drb->flippedPitch + (dPriv->x + (X))) * drb->cpp)
+#include "spantmp2.h"
+
+/* Idling in the depth/stencil span functions:
+ * For writes, the kernel reads from the given user-space buffer at dispatch
+ * time, and then writes to the depth buffer asynchronously.
+ * For reads, the kernel reads from the depth buffer and writes to the span
+ * temporary asynchronously.
+ * So, if we're going to read from the span temporary, we need to idle before
+ * doing so. But we don't need to idle after write, because the CPU won't
+ * be accessing the destination, only the accelerator (through 3d rendering or
+ * depth span reads)
+ * However, due to interactions from pixel cache between 2d (what we do with
+ * depth) and 3d (all other parts of the system), we idle at the begin and end
+ * of a set of span operations, which should cover the pix cache issue.
+ * Except, we still have major issues, as shown by no_rast=true glxgears, or
+ * stencilwrap.
+ */
+
+/* ================================================================
+ * Depth buffer
+ */
+
+/* These functions require locking */
+#undef HW_LOCK
+#undef HW_UNLOCK
+#define HW_LOCK() LOCK_HARDWARE(R128_CONTEXT(ctx));
+#define HW_UNLOCK() UNLOCK_HARDWARE(R128_CONTEXT(ctx));
+
+/* 16-bit depth buffer functions
+ */
+#define VALUE_TYPE GLushort
+
+#define WRITE_DEPTH_SPAN() \
+do { \
+ r128WriteDepthSpanLocked( rmesa, n, \
+ x + dPriv->x, \
+ y + dPriv->y, \
+ depth, mask ); \
+} while (0)
+
+#define WRITE_DEPTH_PIXELS() \
+do { \
+ GLint ox[MAX_WIDTH]; \
+ GLint oy[MAX_WIDTH]; \
+ for ( i = 0 ; i < n ; i++ ) { \
+ ox[i] = x[i] + dPriv->x; \
+ oy[i] = Y_FLIP( y[i] ) + dPriv->y; \
+ } \
+ r128WriteDepthPixelsLocked( rmesa, n, ox, oy, depth, mask ); \
+} while (0)
+
+#define READ_DEPTH_SPAN() \
+do { \
+ GLushort *buf = (GLushort *)((GLubyte *)sPriv->pFB + \
+ r128scrn->spanOffset); \
+ GLint i; \
+ \
+ r128ReadDepthSpanLocked( rmesa, n, \
+ x + dPriv->x, \
+ y + dPriv->y ); \
+ r128WaitForIdleLocked( rmesa ); \
+ \
+ for ( i = 0 ; i < n ; i++ ) { \
+ depth[i] = buf[i]; \
+ } \
+} while (0)
+
+#define READ_DEPTH_PIXELS() \
+do { \
+ GLushort *buf = (GLushort *)((GLubyte *)sPriv->pFB + \
+ r128scrn->spanOffset); \
+ GLint i, remaining = n; \
+ \
+ while ( remaining > 0 ) { \
+ GLint ox[128]; \
+ GLint oy[128]; \
+ GLint count; \
+ \
+ if ( remaining <= 128 ) { \
+ count = remaining; \
+ } else { \
+ count = 128; \
+ } \
+ for ( i = 0 ; i < count ; i++ ) { \
+ ox[i] = x[i] + dPriv->x; \
+ oy[i] = Y_FLIP( y[i] ) + dPriv->y; \
+ } \
+ \
+ r128ReadDepthPixelsLocked( rmesa, count, ox, oy ); \
+ r128WaitForIdleLocked( rmesa ); \
+ \
+ for ( i = 0 ; i < count ; i++ ) { \
+ depth[i] = buf[i]; \
+ } \
+ depth += count; \
+ x += count; \
+ y += count; \
+ remaining -= count; \
+ } \
+} while (0)
+
+#define TAG(x) r128##x##_z16
+#include "depthtmp.h"
+
+
+/* 24-bit depth, 8-bit stencil buffer functions
+ */
+#define VALUE_TYPE GLuint
+
+#define WRITE_DEPTH_SPAN() \
+do { \
+ GLuint buf[n]; \
+ GLint i; \
+ GLuint *readbuf = (GLuint *)((GLubyte *)sPriv->pFB + \
+ r128scrn->spanOffset); \
+ r128ReadDepthSpanLocked( rmesa, n, \
+ x + dPriv->x, \
+ y + dPriv->y ); \
+ r128WaitForIdleLocked( rmesa ); \
+ for ( i = 0 ; i < n ; i++ ) { \
+ buf[i] = (readbuf[i] & 0xff000000) | (depth[i] & 0x00ffffff); \
+ } \
+ r128WriteDepthSpanLocked( rmesa, n, \
+ x + dPriv->x, \
+ y + dPriv->y, \
+ buf, mask ); \
+} while (0)
+
+#define WRITE_DEPTH_PIXELS() \
+do { \
+ GLuint buf[n]; \
+ GLint ox[MAX_WIDTH]; \
+ GLint oy[MAX_WIDTH]; \
+ GLuint *readbuf = (GLuint *)((GLubyte *)sPriv->pFB + \
+ r128scrn->spanOffset); \
+ for ( i = 0 ; i < n ; i++ ) { \
+ ox[i] = x[i] + dPriv->x; \
+ oy[i] = Y_FLIP( y[i] ) + dPriv->y; \
+ } \
+ r128ReadDepthPixelsLocked( rmesa, n, ox, oy ); \
+ r128WaitForIdleLocked( rmesa ); \
+ for ( i = 0 ; i < n ; i++ ) { \
+ buf[i] = (readbuf[i] & 0xff000000) | (depth[i] & 0x00ffffff); \
+ } \
+ r128WriteDepthPixelsLocked( rmesa, n, ox, oy, buf, mask ); \
+} while (0)
+
+#define READ_DEPTH_SPAN() \
+do { \
+ GLuint *buf = (GLuint *)((GLubyte *)sPriv->pFB + \
+ r128scrn->spanOffset); \
+ GLint i; \
+ \
+ /*if (n >= 128) fprintf(stderr, "Large number of pixels: %d\n", n);*/ \
+ r128ReadDepthSpanLocked( rmesa, n, \
+ x + dPriv->x, \
+ y + dPriv->y ); \
+ r128WaitForIdleLocked( rmesa ); \
+ \
+ for ( i = 0 ; i < n ; i++ ) { \
+ depth[i] = buf[i] & 0x00ffffff; \
+ } \
+} while (0)
+
+#define READ_DEPTH_PIXELS() \
+do { \
+ GLuint *buf = (GLuint *)((GLubyte *)sPriv->pFB + \
+ r128scrn->spanOffset); \
+ GLint i, remaining = n; \
+ \
+ while ( remaining > 0 ) { \
+ GLint ox[128]; \
+ GLint oy[128]; \
+ GLint count; \
+ \
+ if ( remaining <= 128 ) { \
+ count = remaining; \
+ } else { \
+ count = 128; \
+ } \
+ for ( i = 0 ; i < count ; i++ ) { \
+ ox[i] = x[i] + dPriv->x; \
+ oy[i] = Y_FLIP( y[i] ) + dPriv->y; \
+ } \
+ \
+ r128ReadDepthPixelsLocked( rmesa, count, ox, oy ); \
+ r128WaitForIdleLocked( rmesa ); \
+ \
+ for ( i = 0 ; i < count ; i++ ) { \
+ depth[i] = buf[i] & 0x00ffffff; \
+ } \
+ depth += count; \
+ x += count; \
+ y += count; \
+ remaining -= count; \
+ } \
+} while (0)
+
+#define TAG(x) r128##x##_z24_s8
+#include "depthtmp.h"
+
+
+
+/* ================================================================
+ * Stencil buffer
+ */
+
+/* 24 bit depth, 8 bit stencil depthbuffer functions
+ */
+#define WRITE_STENCIL_SPAN() \
+do { \
+ GLuint buf[n]; \
+ GLint i; \
+ GLuint *readbuf = (GLuint *)((GLubyte *)sPriv->pFB + \
+ r128scrn->spanOffset); \
+ r128ReadDepthSpanLocked( rmesa, n, \
+ x + dPriv->x, \
+ y + dPriv->y ); \
+ r128WaitForIdleLocked( rmesa ); \
+ for ( i = 0 ; i < n ; i++ ) { \
+ buf[i] = (readbuf[i] & 0x00ffffff) | (stencil[i] << 24); \
+ } \
+ r128WriteDepthSpanLocked( rmesa, n, \
+ x + dPriv->x, \
+ y + dPriv->y, \
+ buf, mask ); \
+} while (0)
+
+#define WRITE_STENCIL_PIXELS() \
+do { \
+ GLuint buf[n]; \
+ GLint ox[MAX_WIDTH]; \
+ GLint oy[MAX_WIDTH]; \
+ GLuint *readbuf = (GLuint *)((GLubyte *)sPriv->pFB + \
+ r128scrn->spanOffset); \
+ for ( i = 0 ; i < n ; i++ ) { \
+ ox[i] = x[i] + dPriv->x; \
+ oy[i] = Y_FLIP( y[i] ) + dPriv->y; \
+ } \
+ r128ReadDepthPixelsLocked( rmesa, n, ox, oy ); \
+ r128WaitForIdleLocked( rmesa ); \
+ for ( i = 0 ; i < n ; i++ ) { \
+ buf[i] = (readbuf[i] & 0x00ffffff) | (stencil[i] << 24); \
+ } \
+ r128WriteDepthPixelsLocked( rmesa, n, ox, oy, buf, mask ); \
+} while (0)
+
+#define READ_STENCIL_SPAN() \
+do { \
+ GLuint *buf = (GLuint *)((GLubyte *)sPriv->pFB + \
+ r128scrn->spanOffset); \
+ GLint i; \
+ \
+ /*if (n >= 128) fprintf(stderr, "Large number of pixels: %d\n", n);*/ \
+ r128ReadDepthSpanLocked( rmesa, n, \
+ x + dPriv->x, \
+ y + dPriv->y ); \
+ r128WaitForIdleLocked( rmesa ); \
+ \
+ for ( i = 0 ; i < n ; i++ ) { \
+ stencil[i] = (buf[i] & 0xff000000) >> 24; \
+ } \
+} while (0)
+
+#define READ_STENCIL_PIXELS() \
+do { \
+ GLuint *buf = (GLuint *)((GLubyte *)sPriv->pFB + \
+ r128scrn->spanOffset); \
+ GLint i, remaining = n; \
+ \
+ while ( remaining > 0 ) { \
+ GLint ox[128]; \
+ GLint oy[128]; \
+ GLint count; \
+ \
+ if ( remaining <= 128 ) { \
+ count = remaining; \
+ } else { \
+ count = 128; \
+ } \
+ for ( i = 0 ; i < count ; i++ ) { \
+ ox[i] = x[i] + dPriv->x; \
+ oy[i] = Y_FLIP( y[i] ) + dPriv->y; \
+ } \
+ \
+ r128ReadDepthPixelsLocked( rmesa, count, ox, oy ); \
+ r128WaitForIdleLocked( rmesa ); \
+ \
+ for ( i = 0 ; i < count ; i++ ) { \
+ stencil[i] = (buf[i] & 0xff000000) >> 24; \
+ } \
+ stencil += count; \
+ x += count; \
+ y += count; \
+ remaining -= count; \
+ } \
+} while (0)
+
+#define TAG(x) radeon##x##_z24_s8
+#include "stenciltmp.h"
+
+static void
+r128SpanRenderStart( GLcontext *ctx )
+{
+ r128ContextPtr rmesa = R128_CONTEXT(ctx);
+ FLUSH_BATCH(rmesa);
+ LOCK_HARDWARE(rmesa);
+ r128WaitForIdleLocked( rmesa );
+}
+
+static void
+r128SpanRenderFinish( GLcontext *ctx )
+{
+ r128ContextPtr rmesa = R128_CONTEXT(ctx);
+ _swrast_flush( ctx );
+ r128WaitForIdleLocked( rmesa );
+ UNLOCK_HARDWARE( rmesa );
+}
+
+void r128DDInitSpanFuncs( GLcontext *ctx )
+{
+ struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
+ swdd->SpanRenderStart = r128SpanRenderStart;
+ swdd->SpanRenderFinish = r128SpanRenderFinish;
+}
+
+
+/**
+ * Plug in the Get/Put routines for the given driRenderbuffer.
+ */
+void
+r128SetSpanFunctions(driRenderbuffer *drb, const GLvisual *vis)
+{
+ if (drb->Base.Format == MESA_FORMAT_RGB565) {
+ r128InitPointers_RGB565(&drb->Base);
+ }
+ else if (drb->Base.Format == MESA_FORMAT_ARGB8888) {
+ r128InitPointers_ARGB8888(&drb->Base);
+ }
+ else if (drb->Base.Format == MESA_FORMAT_Z16) {
+ r128InitDepthPointers_z16(&drb->Base);
+ }
+ else if (drb->Base.Format == MESA_FORMAT_S8_Z24) {
+ r128InitDepthPointers_z24_s8(&drb->Base);
+ }
+ else if (drb->Base.Format == MESA_FORMAT_S8) {
+ radeonInitStencilPointers_z24_s8(&drb->Base);
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-06-12 00:31:45 +0000