diff options
Diffstat (limited to 'src/mesa/pipe/softpipe/g_surface.c')
| -rw-r--r-- | src/mesa/pipe/softpipe/g_surface.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/src/mesa/pipe/softpipe/g_surface.c b/src/mesa/pipe/softpipe/g_surface.c new file mode 100644 index 0000000000..2df30cde70 --- /dev/null +++ b/src/mesa/pipe/softpipe/g_surface.c @@ -0,0 +1,153 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * 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 TUNGSTEN 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 "g_context.h" +#include "g_state.h" +#include "g_surface.h" +#include "g_headers.h" + +static void rgba8_read_quad_f( struct generic_surface *gs, + GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + rgba[k][0] = ptr[0] * (1.0 / 255.0); + rgba[k][1] = ptr[1] * (1.0 / 255.0); + rgba[k][2] = ptr[2] * (1.0 / 255.0); + rgba[k][3] = ptr[3] * (1.0 / 255.0); + } + } +} + +static void rgba8_read_quad_f_swz( struct generic_surface *gs, + GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + rrrr[0][k] = ptr[0] * (1.0 / 255.0); + rrrr[1][k] = ptr[1] * (1.0 / 255.0); + rrrr[2][k] = ptr[2] * (1.0 / 255.0); + rrrr[3][k] = ptr[3] * (1.0 / 255.0); + } + } +} + +static void rgba8_write_quad_f( struct generic_surface *gs, + GLint x, GLint y, + GLfloat (*rgba)[NUM_CHANNELS] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + ptr[0] = rgba[k][0] * 255.0; + ptr[1] = rgba[k][1] * 255.0; + ptr[2] = rgba[k][2] * 255.0; + ptr[3] = rgba[k][3] * 255.0; + } + } +} + +static void rgba8_write_quad_f_swz( struct generic_surface *gs, + GLint x, GLint y, + GLfloat (*rrrr)[QUAD_SIZE] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + ptr[0] = rrrr[0][k] * 255.0; + ptr[1] = rrrr[1][k] * 255.0; + ptr[2] = rrrr[2][k] * 255.0; + ptr[3] = rrrr[3][k] * 255.0; + } + } +} + + + + +static void rgba8_read_quad_ub( struct generic_surface *gs, + GLint x, GLint y, + GLubyte (*rgba)[NUM_CHANNELS] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + rgba[k][0] = ptr[0]; + rgba[k][1] = ptr[1]; + rgba[k][2] = ptr[2]; + rgba[k][3] = ptr[3]; + } + } +} + + +static void rgba8_write_quad_ub( struct generic_surface *gs, + GLint x, GLint y, + GLubyte (*rgba)[NUM_CHANNELS] ) +{ + GLuint i, j, k = 0; + + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++, k++) { + GLubyte *ptr = gs->surface.ptr + (y+i) * gs->surface.stride + (x+j) * 4; + ptr[0] = rgba[k][0]; + ptr[1] = rgba[k][1]; + ptr[2] = rgba[k][2]; + ptr[3] = rgba[k][3]; + } + } +} + + + + +struct generic_surface_type gs_rgba8 = { + G_SURFACE_RGBA_8888, + rgba8_read_quad_f, + rgba8_read_quad_f_swz, + rgba8_read_quad_ub, + rgba8_write_quad_f, + rgba8_write_quad_f_swz, + rgba8_write_quad_ub, +}; + + + |