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/*
* Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
* Copyright 2001-2003 S3 Graphics, Inc. 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
* 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
* VIA, S3 GRAPHICS, AND/OR ITS 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.
*/
#include "mtypes.h"
#include "savagedd.h"
#include "savagespan.h"
#include "savageioctl.h"
#include "savage_bci.h"
#include "savage_3d_reg.h"
#include "swrast/swrast.h"
#define DBG 0
#define LOCAL_VARS \
savageContextPtr imesa = SAVAGE_CONTEXT(ctx); \
__DRIdrawablePrivate *dPriv = imesa->mesa_drawable; \
savageScreenPrivate *savageScreen = imesa->savageScreen; \
GLuint cpp = savageScreen->cpp; \
GLuint pitch = imesa->aperturePitch; \
GLuint height = dPriv->h; \
GLubyte *buf = map + \
dPriv->x * cpp + \
dPriv->y * pitch; \
GLuint p; \
(void) p
#define LOCAL_DEPTH_VARS \
savageContextPtr imesa = SAVAGE_CONTEXT(ctx); \
__DRIdrawablePrivate *dPriv = imesa->mesa_drawable; \
savageScreenPrivate *savageScreen = imesa->savageScreen; \
GLuint zpp = savageScreen->zpp; \
GLuint pitch = imesa->aperturePitch; \
GLuint height = dPriv->h; \
GLubyte *buf = imesa->apertureBase[TARGET_DEPTH] + \
dPriv->x * zpp + \
dPriv->y * 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)
#define HW_LOCK()
#define HW_UNLOCK()
#define HW_WRITE_LOCK() \
savageContextPtr imesa = SAVAGE_CONTEXT(ctx); \
GLubyte *map = imesa->drawMap;
#define HW_READ_LOCK() \
savageContextPtr imesa = SAVAGE_CONTEXT(ctx); \
GLubyte *map = imesa->readMap;
#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)
/* 16 bit, 565 rgb color spanline and pixel functions
*/
#define GET_SRC_PTR(_x, _y) (buf + (_x<<1) + _y*pitch)
#define GET_DST_PTR(_x, _y) GET_SRC_PTR(_x, _y)
#define SPANTMP_PIXEL_FMT GL_RGB
#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
#define TAG(x) savage##x##_565
#define TAG2(x,y) savage##x##_565##y
#include "spantmp2.h"
/* 32 bit, 8888 ARGB color spanline and pixel functions
*/
#define GET_SRC_PTR(_x, _y) (buf + (_x<<2) + _y*pitch)
#define GET_DST_PTR(_x, _y) GET_SRC_PTR(_x, _y)
#define SPANTMP_PIXEL_FMT GL_BGRA
#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
#define TAG(x) savage##x##_8888
#define TAG2(x,y) savage##x##_8888##y
#include "spantmp2.h"
#undef HW_WRITE_LOCK
#define HW_WRITE_LOCK()
#undef HW_READ_LOCK
#define HW_READ_LOCK()
/* 16 bit integer depthbuffer functions
* Depth range is reversed. See also savageCalcViewport.
*/
#define WRITE_DEPTH( _x, _y, d ) \
*(GLushort *)(buf + ((_x)<<1) + (_y)*pitch) = 0xFFFF - d
#define READ_DEPTH( d, _x, _y ) \
d = 0xFFFF - *(GLushort *)(buf + ((_x)<<1) + (_y)*pitch)
#define TAG(x) savage##x##_16
#include "depthtmp.h"
/* 16 bit float depthbuffer functions
*/
#define WRITE_DEPTH( _x, _y, d ) \
*(GLushort *)(buf + ((_x)<<1) + (_y)*pitch) = \
savageEncodeFloat16( 1.0 - (GLfloat)d/65535.0 )
#define READ_DEPTH( d, _x, _y ) \
d = 65535 - \
savageDecodeFloat16( *(GLushort *)(buf + ((_x)<<1) + (_y)*pitch) ) * \
65535.0
#define TAG(x) savage##x##_16f
#include "depthtmp.h"
/* 8-bit stencil /24-bit integer depth depthbuffer functions.
* Depth range is reversed. See also savageCalcViewport.
*/
#define WRITE_DEPTH( _x, _y, d ) do { \
GLuint tmp = *(GLuint *)(buf + ((_x)<<2) + (_y)*pitch); \
tmp &= 0xFF000000; \
tmp |= 0x00FFFFFF - d; \
*(GLuint *)(buf + (_x<<2) + _y*pitch) = tmp; \
} while(0)
#define READ_DEPTH( d, _x, _y ) \
d = 0x00FFFFFF - (*(GLuint *)(buf + ((_x)<<2) + (_y)*pitch) & 0x00FFFFFF)
#define TAG(x) savage##x##_8_24
#include "depthtmp.h"
/* 24 bit float depthbuffer functions
*/
#define WRITE_DEPTH( _x, _y, d ) do { \
GLuint tmp = *(GLuint *)(buf + ((_x)<<2) + (_y)*pitch); \
tmp &= 0xFF000000; \
tmp |= savageEncodeFloat24( 1.0 - (GLfloat)d/16777215.0 ); \
*(GLuint *)(buf + (_x<<2) + _y*pitch) = tmp; \
} while(0)
#define READ_DEPTH( d, _x, _y ) \
d = 16777215 - savageDecodeFloat24( \
*(GLuint *)(buf + ((_x)<<2) + (_y)*pitch) & 0x00FFFFFF) \
* 16777215.0
#define TAG(x) savage##x##_8_24f
#include "depthtmp.h"
#define WRITE_STENCIL( _x, _y, d ) do { \
GLuint tmp = *(GLuint *)(buf + ((_x)<<2) + (_y)*pitch); \
tmp &= 0x00FFFFFF; \
tmp |= (((GLuint)d)<<24) & 0xFF000000; \
*(GLuint *)(buf + ((_x)<<2) + (_y)*pitch) = tmp; \
} while(0)
#define READ_STENCIL( d, _x, _y ) \
d = (GLstencil)((*(GLuint *)(buf + ((_x)<<2) + (_y)*pitch) & 0xFF000000) >> 24)
#define TAG(x) savage##x##_8_24
#include "stenciltmp.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 savageDDSetBuffer(GLcontext *ctx, GLframebuffer *buffer,
GLuint bufferBit)
{
savageContextPtr imesa = SAVAGE_CONTEXT(ctx);
char *map;
assert((bufferBit == DD_FRONT_LEFT_BIT) || (bufferBit == DD_BACK_LEFT_BIT));
map = (bufferBit == DD_FRONT_LEFT_BIT)
? imesa->apertureBase[TARGET_FRONT]
: imesa->apertureBase[TARGET_BACK];
imesa->drawMap = map;
imesa->readMap = map;
assert( (buffer == imesa->driDrawable->driverPrivate)
|| (buffer == imesa->driReadable->driverPrivate) );
imesa->mesa_drawable = (buffer == imesa->driDrawable->driverPrivate)
? imesa->driDrawable : imesa->driReadable;
}
/*
* Wrappers around _swrast_Copy/Draw/ReadPixels that make sure all
* primitives are flushed and the hardware is idle before accessing
* the frame buffer.
*/
static void
savageCopyPixels( GLcontext *ctx,
GLint srcx, GLint srcy, GLsizei width, GLsizei height,
GLint destx, GLint desty,
GLenum type )
{
savageContextPtr imesa = SAVAGE_CONTEXT(ctx);
FLUSH_BATCH(imesa);
WAIT_IDLE_EMPTY(imesa);
_swrast_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type);
}
static void
savageDrawPixels( GLcontext *ctx,
GLint x, GLint y,
GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *packing,
const GLvoid *pixels )
{
savageContextPtr imesa = SAVAGE_CONTEXT(ctx);
FLUSH_BATCH(imesa);
WAIT_IDLE_EMPTY(imesa);
_swrast_DrawPixels(ctx, x, y, width, height, format, type, packing, pixels);
}
static void
savageReadPixels( GLcontext *ctx,
GLint x, GLint y, GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *packing,
GLvoid *pixels )
{
savageContextPtr imesa = SAVAGE_CONTEXT(ctx);
FLUSH_BATCH(imesa);
WAIT_IDLE_EMPTY(imesa);
_swrast_ReadPixels(ctx, x, y, width, height, format, type, packing, pixels);
}
/*
* Make sure the hardware is idle when span-rendering.
*/
static void savageSpanRenderStart( GLcontext *ctx )
{
savageContextPtr imesa = SAVAGE_CONTEXT(ctx);
FLUSH_BATCH(imesa);
WAIT_IDLE_EMPTY(imesa);
}
void savageDDInitSpanFuncs( GLcontext *ctx )
{
savageContextPtr imesa = SAVAGE_CONTEXT(ctx);
struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
swdd->SetBuffer = savageDDSetBuffer;
switch (imesa->savageScreen->cpp)
{
case 2: savageInitPointers_565( swdd ); break;
case 4: savageInitPointers_8888( swdd );
}
switch (imesa->savageScreen->zpp)
{
case 2:
if (imesa->float_depth) {
swdd->ReadDepthSpan = savageReadDepthSpan_16f;
swdd->WriteDepthSpan = savageWriteDepthSpan_16f;
swdd->WriteMonoDepthSpan = savageWriteMonoDepthSpan_16f;
swdd->ReadDepthPixels = savageReadDepthPixels_16f;
swdd->WriteDepthPixels = savageWriteDepthPixels_16f;
} else {
swdd->ReadDepthSpan = savageReadDepthSpan_16;
swdd->WriteDepthSpan = savageWriteDepthSpan_16;
swdd->WriteMonoDepthSpan = savageWriteMonoDepthSpan_16;
swdd->ReadDepthPixels = savageReadDepthPixels_16;
swdd->WriteDepthPixels = savageWriteDepthPixels_16;
}
break;
case 4:
if (imesa->float_depth) {
swdd->ReadDepthSpan = savageReadDepthSpan_8_24f;
swdd->WriteDepthSpan = savageWriteDepthSpan_8_24f;
swdd->WriteMonoDepthSpan = savageWriteMonoDepthSpan_8_24f;
swdd->ReadDepthPixels = savageReadDepthPixels_8_24f;
swdd->WriteDepthPixels = savageWriteDepthPixels_8_24f;
} else {
swdd->ReadDepthSpan = savageReadDepthSpan_8_24;
swdd->WriteDepthSpan = savageWriteDepthSpan_8_24;
swdd->WriteMonoDepthSpan = savageWriteMonoDepthSpan_8_24;
swdd->ReadDepthPixels = savageReadDepthPixels_8_24;
swdd->WriteDepthPixels = savageWriteDepthPixels_8_24;
}
swdd->ReadStencilSpan = savageReadStencilSpan_8_24;
swdd->WriteStencilSpan = savageWriteStencilSpan_8_24;
swdd->ReadStencilPixels = savageReadStencilPixels_8_24;
swdd->WriteStencilPixels = savageWriteStencilPixels_8_24;
break;
}
swdd->WriteCI8Span =NULL;
swdd->WriteCI32Span =NULL;
swdd->WriteMonoCISpan =NULL;
swdd->WriteCI32Pixels =NULL;
swdd->WriteMonoCIPixels =NULL;
swdd->ReadCI32Span =NULL;
swdd->ReadCI32Pixels =NULL;
swdd->SpanRenderStart = savageSpanRenderStart;
/* Pixel path fallbacks.
*/
ctx->Driver.Accum = _swrast_Accum;
ctx->Driver.Bitmap = _swrast_Bitmap;
ctx->Driver.CopyPixels = savageCopyPixels;
ctx->Driver.DrawPixels = savageDrawPixels;
ctx->Driver.ReadPixels = savageReadPixels;
}
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