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disable pixel transfer ops for glGetTexImage(), per the spec

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This commit is contained in:
Brian Paul 2001-06-12 22:05:34 +00:00
parent d3778fc129
commit 5ed63e0895
1 changed files with 6 additions and 85 deletions
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91
src/mesa/main/teximage.c
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@ -1,4 +1,4 @@
/* $Id: teximage.c,v 1.95 2001/05/24 14:47:56 brianp Exp $ */
/* $Id: teximage.c,v 1.96 2001/06/12 22:05:34 brianp Exp $ */
/*
* Mesa 3-D graphics library
@ -1151,89 +1151,10 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format,
return;
}
if (ctx->NewState & _NEW_PIXEL)
_mesa_update_state(ctx);
if (is_color_format(format) &&
ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
/* convert texture image to GL_RGBA, GL_FLOAT */
GLint width = texImage->Width;
GLint height = texImage->Height;
GLint depth = texImage->Depth;
GLint img, row;
GLfloat *tmpImage, *convImage;
tmpImage = (GLfloat *) MALLOC(width * height * 4 * sizeof(GLfloat));
if (!tmpImage) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
return;
}
convImage = (GLfloat *) MALLOC(width * height * 4 * sizeof(GLfloat));
if (!convImage) {
FREE(tmpImage);
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
return;
}
for (img = 0; img < depth; img++) {
GLint convWidth, convHeight;
/* convert texture data to GLfloat/GL_RGBA */
for (row = 0; row < height; row++) {
GLchan texels[1 << MAX_TEXTURE_LEVELS][4];
GLint col;
GLfloat *dst = tmpImage + row * width * 4;
for (col = 0; col < width; col++) {
(*texImage->FetchTexel)(texImage, col, row, img,
texels[col]);
}
_mesa_unpack_float_color_span(ctx, width, GL_RGBA, dst,
GL_RGBA, CHAN_TYPE, texels,
&_mesa_native_packing,
ctx->_ImageTransferState & IMAGE_PRE_CONVOLUTION_BITS,
GL_FALSE);
}
convWidth = width;
convHeight = height;
/* convolve */
if (target == GL_TEXTURE_1D) {
if (ctx->Pixel.Convolution1DEnabled) {
_mesa_convolve_1d_image(ctx, &convWidth, tmpImage, convImage);
}
}
else {
if (ctx->Pixel.Convolution2DEnabled) {
_mesa_convolve_2d_image(ctx, &convWidth, &convHeight,
tmpImage, convImage);
}
else if (ctx->Pixel.Separable2DEnabled) {
_mesa_convolve_sep_image(ctx, &convWidth, &convHeight,
tmpImage, convImage);
}
}
/* pack convolved image */
for (row = 0; row < convHeight; row++) {
const GLfloat *src = convImage + row * convWidth * 4;
GLvoid *dest = _mesa_image_address(&ctx->Pack, pixels,
convWidth, convHeight,
format, type, img, row, 0);
_mesa_pack_float_rgba_span(ctx, convWidth,
(const GLfloat(*)[4]) src,
format, type, dest, &ctx->Pack,
ctx->_ImageTransferState & IMAGE_POST_CONVOLUTION_BITS);
}
}
FREE(tmpImage);
FREE(convImage);
}
else {
/* no convolution, or non-rgba image */
GLint width = texImage->Width;
GLint height = texImage->Height;
GLint depth = texImage->Depth;
{
const GLint width = texImage->Width;
const GLint height = texImage->Height;
const GLint depth = texImage->Depth;
GLint img, row;
for (img = 0; img < depth; img++) {
for (row = 0; row < height; row++) {
@ -1278,7 +1199,7 @@ _mesa_GetTexImage( GLenum target, GLint level, GLenum format,
} /* format */
} /* row */
} /* img */
} /* convolution */
}
}