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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 "glheader.h"
#include "macros.h"
#include "mtypes.h"
#include "colormac.h"
#include "via_context.h"
#include "via_span.h"
#include "via_ioctl.h"
#include "swrast/swrast.h"
#define DBG 0
#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_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)
#define HW_UNLOCK()
#undef LOCAL_VARS
#define LOCAL_VARS \
viaContextPtr vmesa = VIA_CONTEXT(ctx); \
__DRIdrawablePrivate *dPriv = vmesa->driDrawable; \
GLuint draw_pitch = vmesa->drawBuffer->pitch; \
GLuint read_pitch = vmesa->readBuffer->pitch; \
GLuint height = dPriv->h; \
GLint p = 0; \
char *buf = (char *)(vmesa->drawBuffer->origMap + vmesa->drawXoff * vmesa->viaScreen->bytesPerPixel); \
char *read_buf = (char *)(vmesa->readBuffer->origMap + vmesa->drawXoff * vmesa->viaScreen->bytesPerPixel); \
(void) (read_pitch && draw_pitch && buf && read_buf && p);
/* ================================================================
* Color buffer
*/
/* 16 bit, RGB565 color spanline and pixel functions
*/
#define GET_SRC_PTR(_x, _y) (read_buf + _x * 2 + _y * read_pitch)
#define GET_DST_PTR(_x, _y) ( buf + _x * 2 + _y * draw_pitch)
#define SPANTMP_PIXEL_FMT GL_RGB
#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
#define TAG(x) via##x##_565
#define TAG2(x,y) via##x##_565##y
#include "spantmp2.h"
/* 32 bit, ARGB8888 color spanline and pixel functions
*/
#define GET_SRC_PTR(_x, _y) (read_buf + _x * 4 + _y * read_pitch)
#define GET_DST_PTR(_x, _y) ( buf + _x * 4 + _y * draw_pitch)
#define SPANTMP_PIXEL_FMT GL_BGRA
#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
#define TAG(x) via##x##_8888
#define TAG2(x,y) via##x##_8888##y
#include "spantmp2.h"
/* 16 bit depthbuffer functions.
*/
#define LOCAL_DEPTH_VARS \
viaContextPtr vmesa = VIA_CONTEXT(ctx); \
__DRIdrawablePrivate *dPriv = vmesa->driDrawable; \
GLuint depth_pitch = vmesa->depth.pitch; \
GLuint height = dPriv->h; \
char *buf = (char *)(vmesa->depth.map + (vmesa->drawXoff * vmesa->depth.bpp/8))
#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
#define WRITE_DEPTH(_x, _y, d) \
*(GLushort *)(buf + (_x) * 2 + (_y) * depth_pitch) = d;
#define READ_DEPTH(d, _x, _y) \
d = *(volatile GLushort *)(buf + (_x) * 2 + (_y) * depth_pitch);
#define TAG(x) via##x##_16
#include "depthtmp.h"
/* 32 bit depthbuffer functions.
*/
#define WRITE_DEPTH(_x, _y, d) \
*(GLuint *)(buf + (_x) * 4 + (_y) * depth_pitch) = d;
#define READ_DEPTH(d, _x, _y) \
d = *(volatile GLuint *)(buf + (_x) * 4 + (_y) * depth_pitch);
#define TAG(x) via##x##_32
#include "depthtmp.h"
/* 24/8 bit interleaved depth/stencil functions
*/
#define WRITE_DEPTH( _x, _y, d ) { \
GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch); \
tmp &= 0x000000ff; \
tmp |= ((d)<<8); \
*(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch) = tmp; \
}
#define READ_DEPTH( d, _x, _y ) \
d = (*(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch)) >> 8;
#define TAG(x) via##x##_24_8
#include "depthtmp.h"
#define WRITE_STENCIL( _x, _y, d ) { \
GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch); \
tmp &= 0xffffff00; \
tmp |= (d); \
*(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch) = tmp; \
}
#define READ_STENCIL( d, _x, _y ) \
d = *(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch) & 0xff;
#define TAG(x) via##x##_24_8
#include "stenciltmp.h"
static void viaSetBuffer(GLcontext *ctx, GLframebuffer *colorBuffer,
GLuint bufferBit)
{
viaContextPtr vmesa = VIA_CONTEXT(ctx);
if (bufferBit == DD_FRONT_LEFT_BIT) {
vmesa->drawBuffer = vmesa->readBuffer = &vmesa->front;
}
else if (bufferBit == DD_BACK_LEFT_BIT) {
vmesa->drawBuffer = vmesa->readBuffer = &vmesa->back;
}
else {
ASSERT(0);
}
}
/* Move locking out to get reasonable span performance.
*/
void viaSpanRenderStart( GLcontext *ctx )
{
viaContextPtr vmesa = VIA_CONTEXT(ctx);
VIA_FINISH_PRIM(vmesa);
LOCK_HARDWARE(vmesa);
viaFlushDmaLocked(vmesa, 0);
WAIT_IDLE(vmesa);
}
void viaSpanRenderFinish( GLcontext *ctx )
{
viaContextPtr vmesa = VIA_CONTEXT(ctx);
_swrast_flush( ctx );
UNLOCK_HARDWARE( vmesa );
}
void viaInitSpanFuncs(GLcontext *ctx)
{
viaContextPtr vmesa = VIA_CONTEXT(ctx);
struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
swdd->SetBuffer = viaSetBuffer;
if (vmesa->viaScreen->bitsPerPixel == 16) {
viaInitPointers_565( swdd );
}
else if (vmesa->viaScreen->bitsPerPixel == 32) {
viaInitPointers_8888( swdd );
}
else {
assert(0);
}
if (vmesa->glCtx->Visual.depthBits == 16) {
swdd->ReadDepthSpan = viaReadDepthSpan_16;
swdd->WriteDepthSpan = viaWriteDepthSpan_16;
swdd->WriteMonoDepthSpan = viaWriteMonoDepthSpan_16;
swdd->ReadDepthPixels = viaReadDepthPixels_16;
swdd->WriteDepthPixels = viaWriteDepthPixels_16;
}
else if (vmesa->glCtx->Visual.depthBits == 24) {
swdd->ReadDepthSpan = viaReadDepthSpan_24_8;
swdd->WriteDepthSpan = viaWriteDepthSpan_24_8;
swdd->WriteMonoDepthSpan = viaWriteMonoDepthSpan_24_8;
swdd->ReadDepthPixels = viaReadDepthPixels_24_8;
swdd->WriteDepthPixels = viaWriteDepthPixels_24_8;
swdd->WriteStencilSpan = viaWriteStencilSpan_24_8;
swdd->ReadStencilSpan = viaReadStencilSpan_24_8;
swdd->WriteStencilPixels = viaWriteStencilPixels_24_8;
swdd->ReadStencilPixels = viaReadStencilPixels_24_8;
}
else if (vmesa->glCtx->Visual.depthBits == 32) {
swdd->ReadDepthSpan = viaReadDepthSpan_32;
swdd->WriteDepthSpan = viaWriteDepthSpan_32;
swdd->WriteMonoDepthSpan = viaWriteMonoDepthSpan_32;
swdd->ReadDepthPixels = viaReadDepthPixels_32;
swdd->WriteDepthPixels = viaWriteDepthPixels_32;
}
swdd->SpanRenderStart = viaSpanRenderStart;
swdd->SpanRenderFinish = viaSpanRenderFinish;
swdd->WriteCI8Span = NULL;
swdd->WriteCI32Span = NULL;
swdd->WriteMonoCISpan = NULL;
swdd->WriteCI32Pixels = NULL;
swdd->WriteMonoCIPixels = NULL;
swdd->ReadCI32Span = NULL;
swdd->ReadCI32Pixels = NULL;
}
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