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Diffstat (limited to 'mesalib/src/mesa/swrast/s_spantemp.h')
| -rw-r--r-- | mesalib/src/mesa/swrast/s_spantemp.h | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/mesalib/src/mesa/swrast/s_spantemp.h b/mesalib/src/mesa/swrast/s_spantemp.h new file mode 100644 index 000000000..bab2ca737 --- /dev/null +++ b/mesalib/src/mesa/swrast/s_spantemp.h @@ -0,0 +1,235 @@ +/* + * 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 "main/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 |