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meta: Use _mesa_get_format_bits() to get the GL_RED_BITS

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We currently get red bits from ctx->DrawBuffer->Visual.redBits
by making a false assumption that the texture we're writing to
(in glCopyTexImage2D()) is used as a DrawBuffer.

Fixes many failures in gles3 Khronos CTS test:
copy_tex_image_conversions_required

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
This commit is contained in:
Anuj Phogat 2014-06-11 18:07:36 -07:00
parent 9796a17265
commit 7de90890c6
1 changed files with 3 additions and 2 deletions
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5
src/mesa/drivers/common/meta.c
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@ -2733,6 +2733,7 @@ static GLenum
get_temp_image_type(struct gl_context *ctx, mesa_format format)
{
const GLenum baseFormat = _mesa_get_format_base_format(format);
const GLint format_red_bits = _mesa_get_format_bits(format, GL_RED_BITS);
switch (baseFormat) {
case GL_RGBA:
@ -2743,9 +2744,9 @@ get_temp_image_type(struct gl_context *ctx, mesa_format format)
case GL_LUMINANCE:
case GL_LUMINANCE_ALPHA:
case GL_INTENSITY:
if (ctx->DrawBuffer->Visual.redBits <= 8) {
if (format_red_bits <= 8) {
return GL_UNSIGNED_BYTE;
} else if (ctx->DrawBuffer->Visual.redBits <= 16) {
} else if (format_red_bits <= 16) {
return GL_UNSIGNED_SHORT;
} else {
GLenum datatype = _mesa_get_format_datatype(format);