| /* |
| * 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. |
| */ |
| |
| |
| /* |
| * 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 |
| * CI_MODE if set, color index mode, else RGBA |
| * 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. |
| */ |
| |
| #include "macros.h" |
| |
| |
| #ifdef CI_MODE |
| #define RB_COMPONENTS 1 |
| #elif !defined(RB_COMPONENTS) |
| #define RB_COMPONENTS 4 |
| #endif |
| |
| |
| static void |
| NAME(get_row)( GLcontext *ctx, struct gl_renderbuffer *rb, |
| GLuint count, GLint x, GLint y, void *values ) |
| { |
| #ifdef SPAN_VARS |
| SPAN_VARS |
| #endif |
| #ifdef CI_MODE |
| RB_TYPE *dest = (RB_TYPE *) values; |
| #else |
| RB_TYPE (*dest)[RB_COMPONENTS] = (RB_TYPE (*)[RB_COMPONENTS]) values; |
| #endif |
| 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; |
| } |
| |
| |
| static void |
| NAME(get_values)( GLcontext *ctx, struct gl_renderbuffer *rb, |
| GLuint count, const GLint x[], const GLint y[], void *values ) |
| { |
| #ifdef SPAN_VARS |
| SPAN_VARS |
| #endif |
| #ifdef CI_MODE |
| RB_TYPE *dest = (RB_TYPE *) values; |
| #else |
| RB_TYPE (*dest)[RB_COMPONENTS] = (RB_TYPE (*)[RB_COMPONENTS]) values; |
| #endif |
| GLuint i; |
| for (i = 0; i < count; i++) { |
| INIT_PIXEL_PTR(pixel, x[i], y[i]); |
| FETCH_PIXEL(dest[i], pixel); |
| } |
| (void) rb; |
| } |
| |
| |
| static void |
| NAME(put_row)( GLcontext *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; |
| } |
| |
| |
| #if !defined(CI_MODE) |
| static void |
| NAME(put_row_rgb)( GLcontext *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; |
| } |
| #endif |
| |
| |
| static void |
| NAME(put_mono_row)( GLcontext *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; |
| } |
| |
| |
| static void |
| NAME(put_values)( GLcontext *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; |
| } |
| |
| |
| static void |
| NAME(put_mono_values)( GLcontext *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; |
| } |
| |
| |
| #undef NAME |
| #undef RB_TYPE |
| #undef RB_COMPONENTS |
| #undef CI_MODE |
| #undef SPAN_VARS |
| #undef INIT_PIXEL_PTR |
| #undef INC_PIXEL_PTR |
| #undef STORE_PIXEL |
| #undef STORE_PIXEL_RGB |
| #undef FETCH_PIXEL |
