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/*
* Mesa 3-D graphics library
* Version: 7.1
*
* Copyright (C) 1999-2008 Brian Paul 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, sublicense,
* 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL 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:
* George Sapountzis <gsap7@yahoo.gr>
*/
#include "swrast_priv.h"
#define YFLIP(_xrb, Y) ((_xrb)->Base.Height - (Y) - 1)
/*
* Pixel macros shared across front/back buffer span functions.
*/
/* 32-bit BGRA */
#define STORE_PIXEL_A8R8G8B8(DST, X, Y, VALUE) \
DST[3] = VALUE[ACOMP]; \
DST[2] = VALUE[RCOMP]; \
DST[1] = VALUE[GCOMP]; \
DST[0] = VALUE[BCOMP]
#define STORE_PIXEL_RGB_A8R8G8B8(DST, X, Y, VALUE) \
DST[3] = 0xff; \
DST[2] = VALUE[RCOMP]; \
DST[1] = VALUE[GCOMP]; \
DST[0] = VALUE[BCOMP]
#define FETCH_PIXEL_A8R8G8B8(DST, SRC) \
DST[ACOMP] = SRC[3]; \
DST[RCOMP] = SRC[2]; \
DST[GCOMP] = SRC[1]; \
DST[BCOMP] = SRC[0]
/* 16-bit BGR */
#define STORE_PIXEL_R5G6B5(DST, X, Y, VALUE) \
do { \
GLushort *p = (GLushort *)DST; \
*p = ( (((VALUE[RCOMP]) & 0xf8) << 8) | \
(((VALUE[GCOMP]) & 0xfc) << 3) | \
(((VALUE[BCOMP]) & 0xf8) >> 3) ); \
} while(0)
#define FETCH_PIXEL_R5G6B5(DST, SRC) \
do { \
GLushort p = *(GLushort *)SRC; \
DST[ACOMP] = 0xff; \
DST[RCOMP] = ((p >> 8) & 0xf8) * 255 / 0xf8; \
DST[GCOMP] = ((p >> 3) & 0xfc) * 255 / 0xfc; \
DST[BCOMP] = ((p << 3) & 0xf8) * 255 / 0xf8; \
} while(0)
/* 8-bit BGR */
#define STORE_PIXEL_R3G3B2(DST, X, Y, VALUE) \
do { \
GLubyte *p = (GLubyte *)DST; \
*p = ( (((VALUE[RCOMP]) & 0xe0) >> 5) | \
(((VALUE[GCOMP]) & 0xe0) >> 2) | \
(((VALUE[BCOMP]) & 0xc0) >> 0) ); \
} while(0)
#define FETCH_PIXEL_R3G3B2(DST, SRC) \
do { \
GLubyte p = *(GLubyte *)SRC; \
DST[ACOMP] = 0xff; \
DST[RCOMP] = ((p << 5) & 0xe0) * 255 / 0xe0; \
DST[GCOMP] = ((p << 2) & 0xe0) * 255 / 0xe0; \
DST[BCOMP] = ((p << 0) & 0xc0) * 255 / 0xc0; \
} while(0)
/*
* Generate code for image span functions.
*/
/* 32-bit BGRA */
#define NAME(FUNC) FUNC##_A8R8G8B8
#define RB_TYPE GLubyte
#define SPAN_VARS \
struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
#define INIT_PIXEL_PTR(P, X, Y) \
GLubyte *P = (GLubyte *)xrb->Base.Data + YFLIP(xrb, Y) * xrb->pitch + (X) * 4;
#define INC_PIXEL_PTR(P) P += 4
#define STORE_PIXEL(DST, X, Y, VALUE) \
STORE_PIXEL_A8R8G8B8(DST, X, Y, VALUE)
#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
STORE_PIXEL_RGB_A8R8G8B8(DST, X, Y, VALUE)
#define FETCH_PIXEL(DST, SRC) \
FETCH_PIXEL_A8R8G8B8(DST, SRC)
#include "swrast/s_spantemp.h"
/* 16-bit BGR */
#define NAME(FUNC) FUNC##_R5G6B5
#define RB_TYPE GLubyte
#define SPAN_VARS \
struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
#define INIT_PIXEL_PTR(P, X, Y) \
GLubyte *P = (GLubyte *)xrb->Base.Data + YFLIP(xrb, Y) * xrb->pitch + (X) * 2;
#define INC_PIXEL_PTR(P) P += 2
#define STORE_PIXEL(DST, X, Y, VALUE) \
STORE_PIXEL_R5G6B5(DST, X, Y, VALUE)
#define FETCH_PIXEL(DST, SRC) \
FETCH_PIXEL_R5G6B5(DST, SRC)
#include "swrast/s_spantemp.h"
/* 8-bit BGR */
#define NAME(FUNC) FUNC##_R3G3B2
#define RB_TYPE GLubyte
#define SPAN_VARS \
struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
#define INIT_PIXEL_PTR(P, X, Y) \
GLubyte *P = (GLubyte *)xrb->Base.Data + YFLIP(xrb, Y) * xrb->pitch + (X) * 1;
#define INC_PIXEL_PTR(P) P += 1
#define STORE_PIXEL(DST, X, Y, VALUE) \
STORE_PIXEL_R3G3B2(DST, X, Y, VALUE)
#define FETCH_PIXEL(DST, SRC) \
FETCH_PIXEL_R3G3B2(DST, SRC)
#include "swrast/s_spantemp.h"
/* 8-bit color index */
#define NAME(FUNC) FUNC##_CI8
#define CI_MODE
#define RB_TYPE GLubyte
#define SPAN_VARS \
struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
#define INIT_PIXEL_PTR(P, X, Y) \
GLubyte *P = (GLubyte *)xrb->Base.Data + YFLIP(xrb, Y) * xrb->pitch + (X);
#define INC_PIXEL_PTR(P) P += 1
#define STORE_PIXEL(DST, X, Y, VALUE) \
*DST = VALUE[0]
#define FETCH_PIXEL(DST, SRC) \
DST = SRC[0]
#include "swrast/s_spantemp.h"
/*
* Generate code for pixmap span functions.
*/
/* 32-bit BGRA */
#define NAME(FUNC) FUNC##_A8R8G8B8_pixmap
#define RB_TYPE GLubyte
#define SPAN_VARS \
struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
#define INIT_PIXEL_PTR(P, X, Y) \
GLubyte *P = (GLubyte *)row;
#define INC_PIXEL_PTR(P) P += 4
#define STORE_PIXEL(DST, X, Y, VALUE) \
STORE_PIXEL_A8R8G8B8(DST, X, Y, VALUE)
#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
STORE_PIXEL_RGB_A8R8G8B8(DST, X, Y, VALUE)
#define FETCH_PIXEL(DST, SRC) \
FETCH_PIXEL_A8R8G8B8(DST, SRC)
#include "swrast_spantemp.h"
/* 16-bit BGR */
#define NAME(FUNC) FUNC##_R5G6B5_pixmap
#define RB_TYPE GLubyte
#define SPAN_VARS \
struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
#define INIT_PIXEL_PTR(P, X, Y) \
GLubyte *P = (GLubyte *)row;
#define INC_PIXEL_PTR(P) P += 2
#define STORE_PIXEL(DST, X, Y, VALUE) \
STORE_PIXEL_R5G6B5(DST, X, Y, VALUE)
#define FETCH_PIXEL(DST, SRC) \
FETCH_PIXEL_R5G6B5(DST, SRC)
#include "swrast_spantemp.h"
/* 8-bit BGR */
#define NAME(FUNC) FUNC##_R3G3B2_pixmap
#define RB_TYPE GLubyte
#define SPAN_VARS \
struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
#define INIT_PIXEL_PTR(P, X, Y) \
GLubyte *P = (GLubyte *)row;
#define INC_PIXEL_PTR(P) P += 1
#define STORE_PIXEL(DST, X, Y, VALUE) \
STORE_PIXEL_R3G3B2(DST, X, Y, VALUE)
#define FETCH_PIXEL(DST, SRC) \
FETCH_PIXEL_R3G3B2(DST, SRC)
#include "swrast_spantemp.h"
/* 8-bit color index */
#define NAME(FUNC) FUNC##_CI8_pixmap
#define CI_MODE
#define RB_TYPE GLubyte
#define SPAN_VARS \
struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
#define INIT_PIXEL_PTR(P, X, Y) \
GLubyte *P = (GLubyte *)row;
#define INC_PIXEL_PTR(P) P += 1
#define STORE_PIXEL(DST, X, Y, VALUE) \
*DST = VALUE[0]
#define FETCH_PIXEL(DST, SRC) \
DST = SRC[0]
#include "swrast_spantemp.h"
/*
* Images are malloced memory used for private back-buffers.
*
* BACK_PIXMAP (not supported)
* BACK_XIMAGE
*/
void
swrast_set_span_funcs_ximage(struct swrast_renderbuffer *xrb,
GLuint pixel_format)
{
switch (pixel_format) {
case PF_A8R8G8B8:
xrb->Base.GetRow = get_row_A8R8G8B8;
xrb->Base.GetValues = get_values_A8R8G8B8;
xrb->Base.PutRow = put_row_A8R8G8B8;
xrb->Base.PutRowRGB = put_row_rgb_A8R8G8B8;
xrb->Base.PutMonoRow = put_mono_row_A8R8G8B8;
xrb->Base.PutValues = put_values_A8R8G8B8;
xrb->Base.PutMonoValues = put_mono_values_A8R8G8B8;
break;
case PF_R5G6B5:
xrb->Base.GetRow = get_row_R5G6B5;
xrb->Base.GetValues = get_values_R5G6B5;
xrb->Base.PutRow = put_row_R5G6B5;
xrb->Base.PutRowRGB = put_row_rgb_R5G6B5;
xrb->Base.PutMonoRow = put_mono_row_R5G6B5;
xrb->Base.PutValues = put_values_R5G6B5;
xrb->Base.PutMonoValues = put_mono_values_R5G6B5;
break;
case PF_R3G3B2:
xrb->Base.GetRow = get_row_R3G3B2;
xrb->Base.GetValues = get_values_R3G3B2;
xrb->Base.PutRow = put_row_R3G3B2;
xrb->Base.PutRowRGB = put_row_rgb_R3G3B2;
xrb->Base.PutMonoRow = put_mono_row_R3G3B2;
xrb->Base.PutValues = put_values_R3G3B2;
xrb->Base.PutMonoValues = put_mono_values_R3G3B2;
break;
case PF_CI8:
xrb->Base.GetRow = get_row_CI8;
xrb->Base.GetValues = get_values_CI8;
xrb->Base.PutRow = put_row_CI8;
xrb->Base.PutMonoRow = put_mono_row_CI8;
xrb->Base.PutValues = put_values_CI8;
xrb->Base.PutMonoValues = put_mono_values_CI8;
break;
default:
assert(0);
return;
}
}
/*
* Pixmaps are used for front-buffers.
*
* WINDOW, An X window
* GLXWINDOW, GLX window
* PIXMAP, GLX pixmap
* PBUFFER GLX Pbuffer
*/
void
swrast_set_span_funcs_pixmap(struct swrast_renderbuffer *xrb,
GLuint pixel_format)
{
switch (pixel_format) {
case PF_A8R8G8B8:
xrb->Base.GetRow = get_row_A8R8G8B8_pixmap;
xrb->Base.GetValues = get_values_A8R8G8B8_pixmap;
xrb->Base.PutRow = put_row_A8R8G8B8_pixmap;
xrb->Base.PutRowRGB = put_row_rgb_A8R8G8B8_pixmap;
xrb->Base.PutMonoRow = put_mono_row_A8R8G8B8_pixmap;
xrb->Base.PutValues = put_values_A8R8G8B8_pixmap;
xrb->Base.PutMonoValues = put_mono_values_A8R8G8B8_pixmap;
break;
case PF_R5G6B5:
xrb->Base.GetRow = get_row_R5G6B5_pixmap;
xrb->Base.GetValues = get_values_R5G6B5_pixmap;
xrb->Base.PutRow = put_row_R5G6B5_pixmap;
xrb->Base.PutRowRGB = put_row_rgb_R5G6B5_pixmap;
xrb->Base.PutMonoRow = put_mono_row_R5G6B5_pixmap;
xrb->Base.PutValues = put_values_R5G6B5_pixmap;
xrb->Base.PutMonoValues = put_mono_values_R5G6B5_pixmap;
break;
case PF_R3G3B2:
xrb->Base.GetRow = get_row_R3G3B2_pixmap;
xrb->Base.GetValues = get_values_R3G3B2_pixmap;
xrb->Base.PutRow = put_row_R3G3B2_pixmap;
xrb->Base.PutRowRGB = put_row_rgb_R3G3B2_pixmap;
xrb->Base.PutMonoRow = put_mono_row_R3G3B2_pixmap;
xrb->Base.PutValues = put_values_R3G3B2_pixmap;
xrb->Base.PutMonoValues = put_mono_values_R3G3B2_pixmap;
break;
case PF_CI8:
xrb->Base.GetRow = get_row_CI8_pixmap;
xrb->Base.GetValues = get_values_CI8_pixmap;
xrb->Base.PutRow = put_row_CI8_pixmap;
xrb->Base.PutMonoRow = put_mono_row_CI8_pixmap;
xrb->Base.PutValues = put_values_CI8_pixmap;
xrb->Base.PutMonoValues = put_mono_values_CI8_pixmap;
break;
default:
assert(0);
return;
}
}
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