-/* $Id: s_imaging.c,v 1.5 2002/04/04 16:53:00 brianp Exp $ */
/*
* Mesa 3-D graphics library
GLenum target, GLenum internalformat,
GLint x, GLint y, GLsizei width)
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLchan data[MAX_WIDTH][4];
/* Select buffer to read from */
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
- ctx->Pixel.DriverReadBuffer );
+ _swrast_use_read_buffer(ctx);
if (width > MAX_WIDTH)
width = MAX_WIDTH;
/* read the data from framebuffer */
- _mesa_read_rgba_span( ctx, ctx->ReadBuffer, width, x, y, data );
+ _swrast_read_rgba_span( ctx, ctx->ReadBuffer, width, x, y, data );
/* Restore reading from draw buffer (the default) */
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
- ctx->Color.DriverDrawBuffer );
+ _swrast_use_draw_buffer(ctx);
glColorTable(target, internalformat, width, GL_RGBA, CHAN_TYPE, data);
}
_swrast_CopyColorSubTable( GLcontext *ctx,GLenum target, GLsizei start,
GLint x, GLint y, GLsizei width)
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLchan data[MAX_WIDTH][4];
/* Select buffer to read from */
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer,
- ctx->Pixel.DriverReadBuffer );
+ _swrast_use_read_buffer(ctx);
if (width > MAX_WIDTH)
width = MAX_WIDTH;
/* read the data from framebuffer */
- _mesa_read_rgba_span( ctx, ctx->ReadBuffer, width, x, y, data );
+ _swrast_read_rgba_span( ctx, ctx->ReadBuffer, width, x, y, data );
/* Restore reading from draw buffer (the default) */
- (*swrast->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer,
- ctx->Color.DriverDrawBuffer );
+ _swrast_use_draw_buffer(ctx);
glColorSubTable(target, start, width, GL_RGBA, CHAN_TYPE, data);
}
SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLchan rgba[MAX_CONVOLUTION_WIDTH][4];
+ /* Select buffer to read from */
+ _swrast_use_read_buffer(ctx);
+
RENDER_START( swrast, ctx );
/* read the data from framebuffer */
- _mesa_read_rgba_span( ctx, ctx->ReadBuffer, width, x, y,
+ _swrast_read_rgba_span( ctx, ctx->ReadBuffer, width, x, y,
(GLchan (*)[4]) rgba );
RENDER_FINISH( swrast, ctx );
+ /* Restore reading from draw buffer (the default) */
+ _swrast_use_draw_buffer(ctx);
+
/* store as convolution filter */
glConvolutionFilter1D(target, internalFormat, width,
GL_RGBA, CHAN_TYPE, rgba);
GLchan rgba[MAX_CONVOLUTION_HEIGHT][MAX_CONVOLUTION_WIDTH][4];
GLint i;
+ /* Select buffer to read from */
+ _swrast_use_read_buffer(ctx);
+
RENDER_START(swrast,ctx);
/* read pixels from framebuffer */
for (i = 0; i < height; i++) {
- _mesa_read_rgba_span( ctx, ctx->ReadBuffer, width, x, y + i,
+ _swrast_read_rgba_span( ctx, ctx->ReadBuffer, width, x, y + i,
(GLchan (*)[4]) rgba[i] );
}
RENDER_FINISH(swrast,ctx);
+ /* Restore reading from draw buffer (the default) */
+ _swrast_use_draw_buffer(ctx);
+
/*
* HACK: save & restore context state so we can store this as a
* convolution filter via the GL api. Doesn't call any callbacks