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/* |
* Mesa 3-D graphics library |
* Version: 6.5.1 |
* |
* Copyright (C) 1999-2006 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. |
*/ |
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/* |
* Templates for the span/pixel-array write/read functions called via |
* the gl_renderbuffer's GetRow, GetValues, PutRow, PutMonoRow, PutValues |
* and PutMonoValues functions. |
* |
* Define the following macros before including this file: |
* NAME(BASE) to generate the function name (i.e. add prefix or suffix) |
* RB_TYPE the renderbuffer DataType |
* SPAN_VARS to declare any local variables |
* INIT_PIXEL_PTR(P, X, Y) to initialize a pointer to a pixel |
* INC_PIXEL_PTR(P) to increment a pixel pointer by one pixel |
* STORE_PIXEL(DST, X, Y, VALUE) to store pixel values in buffer |
* FETCH_PIXEL(DST, SRC) to fetch pixel values from buffer |
* |
* Note that in the STORE_PIXEL macros, we also pass in the (X,Y) coordinates |
* for the pixels to be stored. This is useful when dithering and probably |
* ignored otherwise. |
*/ |
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#include "main/macros.h" |
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#if !defined(RB_COMPONENTS) |
#define RB_COMPONENTS 4 |
#endif |
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static void |
NAME(get_row)( struct gl_context *ctx, struct gl_renderbuffer *rb, |
GLuint count, GLint x, GLint y, void *values ) |
{ |
#ifdef SPAN_VARS |
SPAN_VARS |
#endif |
RB_TYPE (*dest)[RB_COMPONENTS] = (RB_TYPE (*)[RB_COMPONENTS]) values; |
GLuint i; |
INIT_PIXEL_PTR(pixel, x, y); |
for (i = 0; i < count; i++) { |
FETCH_PIXEL(dest[i], pixel); |
INC_PIXEL_PTR(pixel); |
} |
(void) rb; |
} |
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static void |
NAME(get_values)( struct gl_context *ctx, struct gl_renderbuffer *rb, |
GLuint count, const GLint x[], const GLint y[], void *values ) |
{ |
#ifdef SPAN_VARS |
SPAN_VARS |
#endif |
RB_TYPE (*dest)[RB_COMPONENTS] = (RB_TYPE (*)[RB_COMPONENTS]) values; |
GLuint i; |
for (i = 0; i < count; i++) { |
INIT_PIXEL_PTR(pixel, x[i], y[i]); |
FETCH_PIXEL(dest[i], pixel); |
} |
(void) rb; |
} |
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static void |
NAME(put_row)( struct gl_context *ctx, struct gl_renderbuffer *rb, |
GLuint count, GLint x, GLint y, |
const void *values, const GLubyte mask[] ) |
{ |
#ifdef SPAN_VARS |
SPAN_VARS |
#endif |
const RB_TYPE (*src)[RB_COMPONENTS] = (const RB_TYPE (*)[RB_COMPONENTS]) values; |
GLuint i; |
INIT_PIXEL_PTR(pixel, x, y); |
if (mask) { |
for (i = 0; i < count; i++) { |
if (mask[i]) { |
STORE_PIXEL(pixel, x + i, y, src[i]); |
} |
INC_PIXEL_PTR(pixel); |
} |
} |
else { |
for (i = 0; i < count; i++) { |
STORE_PIXEL(pixel, x + i, y, src[i]); |
INC_PIXEL_PTR(pixel); |
} |
} |
(void) rb; |
} |
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static void |
NAME(put_row_rgb)( struct gl_context *ctx, struct gl_renderbuffer *rb, |
GLuint count, GLint x, GLint y, |
const void *values, const GLubyte mask[] ) |
{ |
#ifdef SPAN_VARS |
SPAN_VARS |
#endif |
const RB_TYPE (*src)[3] = (const RB_TYPE (*)[3]) values; |
GLuint i; |
INIT_PIXEL_PTR(pixel, x, y); |
for (i = 0; i < count; i++) { |
if (!mask || mask[i]) { |
#ifdef STORE_PIXEL_RGB |
STORE_PIXEL_RGB(pixel, x + i, y, src[i]); |
#else |
STORE_PIXEL(pixel, x + i, y, src[i]); |
#endif |
} |
INC_PIXEL_PTR(pixel); |
} |
(void) rb; |
} |
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static void |
NAME(put_mono_row)( struct gl_context *ctx, struct gl_renderbuffer *rb, |
GLuint count, GLint x, GLint y, |
const void *value, const GLubyte mask[] ) |
{ |
#ifdef SPAN_VARS |
SPAN_VARS |
#endif |
const RB_TYPE *src = (const RB_TYPE *) value; |
GLuint i; |
INIT_PIXEL_PTR(pixel, x, y); |
if (mask) { |
for (i = 0; i < count; i++) { |
if (mask[i]) { |
STORE_PIXEL(pixel, x + i, y, src); |
} |
INC_PIXEL_PTR(pixel); |
} |
} |
else { |
for (i = 0; i < count; i++) { |
STORE_PIXEL(pixel, x + i, y, src); |
INC_PIXEL_PTR(pixel); |
} |
} |
(void) rb; |
} |
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static void |
NAME(put_values)( struct gl_context *ctx, struct gl_renderbuffer *rb, |
GLuint count, const GLint x[], const GLint y[], |
const void *values, const GLubyte mask[] ) |
{ |
#ifdef SPAN_VARS |
SPAN_VARS |
#endif |
const RB_TYPE (*src)[RB_COMPONENTS] = (const RB_TYPE (*)[RB_COMPONENTS]) values; |
GLuint i; |
ASSERT(mask); |
for (i = 0; i < count; i++) { |
if (mask[i]) { |
INIT_PIXEL_PTR(pixel, x[i], y[i]); |
STORE_PIXEL(pixel, x[i], y[i], src[i]); |
} |
} |
(void) rb; |
} |
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static void |
NAME(put_mono_values)( struct gl_context *ctx, struct gl_renderbuffer *rb, |
GLuint count, const GLint x[], const GLint y[], |
const void *value, const GLubyte mask[] ) |
{ |
#ifdef SPAN_VARS |
SPAN_VARS |
#endif |
const RB_TYPE *src = (const RB_TYPE *) value; |
GLuint i; |
ASSERT(mask); |
for (i = 0; i < count; i++) { |
if (mask[i]) { |
INIT_PIXEL_PTR(pixel, x[i], y[i]); |
STORE_PIXEL(pixel, x[i], y[i], src); |
} |
} |
(void) rb; |
} |
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#undef NAME |
#undef RB_TYPE |
#undef RB_COMPONENTS |
#undef SPAN_VARS |
#undef INIT_PIXEL_PTR |
#undef INC_PIXEL_PTR |
#undef STORE_PIXEL |
#undef STORE_PIXEL_RGB |
#undef FETCH_PIXEL |